Turbine Or Generator Control Patents (Class 700/287)
  • Patent number: 10738763
    Abstract: A method for controlling an active power output in a wind farm comprises inputting a setpoint of the active power into a ramp and limiting unit to determine an internal active power setpoint. Inputting the internal active power setpoint into a distributing unit configured to calculate a modeled active power setpoint of the wind farm. Determine by a subtraction element, a control difference that is a difference between the modeled active power setpoint and an actual value of the active power output of the wind farm. Determine a controller setpoint variable and calculating an overall setpoint variable from the controller setpoint variable and the feed-forward control variable. Splitting the overall setpoint variable for models of the wind turbines and determining using the wind turbine models the modeled active power setpoint of respective wind turbines depending on a portion of the active power setpoint.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: August 11, 2020
    Assignee: Nordex Energy GmbH
    Inventors: Florian Bode, Detlef Drossel
  • Patent number: 10732657
    Abstract: A method for dispatching buildings, including: generating data sets, each having energy values along with corresponding time and outside temperature values, wherein the energy values are shifted by one of a plurality of lag values relative to the corresponding time and outside temperature values; performing a non-linear parabolic analysis on the each of the data sets; determining a least valued residual that indicates a corresponding energy lag for each of the buildings, the corresponding energy lag describes a transient energy consumption period preceding a change in outside temperature; using outside temperatures, model parameters, and energy lags for all of the buildings to estimate a cumulative energy consumption for the buildings, and to predict a dispatch order reception time for the demand response program event; and employing the dispatch order reception time to prepare actions required to control the each of the buildings to optimally shed energy specified in a dispatch order.
    Type: Grant
    Filed: April 24, 2018
    Date of Patent: August 4, 2020
    Assignee: ENEL X NORTH AMERICA, INC.
    Inventors: Husain Al-Mohssen, Angela S. Bassa, Richard R. Paradis
  • Patent number: 10698469
    Abstract: A control system (300) allows recognized standard premise electrical outlets, for example NEMA, CEE and BS, among others to be remotely monitored and/or controlled, for example, to intelligently execute blackouts or brownouts or to otherwise remotely control electrical devices. The system (300) includes a number of smart receptacles (302) that communicate with a local controller (304), e.g., via power lines using the TCP/IP protocol. The local controller (304), in turn, communicates with a remote controller (308) via the internet.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: June 30, 2020
    Assignee: Zonit Structured Solutions, LLC
    Inventors: Steve Chapel, William Pachoud
  • Patent number: 10620259
    Abstract: Disclosed herein is method and system for facilitating fault rectification in power backup devices using a fault rectification system configured in the power backup device. The fault rectification system detects occurrence of fault events in the power backup device and retrieves information required for rectification of the fault events based on the complexity level of the fault event. The rectification information is provided to the user, thereby facilitating the user in rectification of the detected fault event, without requirement of the expert service personnel. The method of instant disclosure helps in reducing total turnaround time of rectifying the faults in the power backup devices by eliminating involvement of expert/customer service personnel in the rectification of the faults.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: April 14, 2020
    Assignee: Wipro Limited
    Inventor: Kothamangala Anandaiah Shetty Nagaraja
  • Patent number: 10612519
    Abstract: The present invention relates to a method of operating a wind farm comprising an upstream and a downstream turbine, wherein the upstream turbine is operated with current operation parameters under current wind conditions, wherein the method comprises the steps of: receiving future wind conditions for a time period for the wind farm, and evaluating required operation parameters for minimising wake effect of the downstream turbine under the future wind conditions, and determining a cost coefficient for changing the operation parameters to required operation parameters under consideration of fatigue effect of the wind turbine, calculating power productions P0 and Pc, in the predetermined time period, by the wind farm if operated with the current operation parameters under the current wind conditions and if operated with the required operation parameters under the future wind conditions, respectively, and operating the upstream turbine with the required operation parameters if the cost coefficient is lower than a
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: April 7, 2020
    Assignee: ABB Schweiz AG
    Inventors: Carsten Franke, Kedar Kulkarni, Adrian Timbus, Jan Poland, Silvia Mastellone, Yan Zhang
  • Patent number: 10587121
    Abstract: An electrical power system includes a cluster of electrical power subsystems, each of the electrical power subsystems including a power converter electrically coupled to a generator having a generator rotor and a generator stator. Each of the electrical power subsystems defines a stator power path and a converter power path for providing power to the power grid, the converter power path including a partial power transformer. Each of the electrical power subsystems further includes a low voltage distribution panel electrically coupled to the converter power path, a first switch on the stator power path, and a second switch on the converter power path.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: March 10, 2020
    Assignee: General Electric Company
    Inventors: Govardhan Ganireddy, Saurabh Shukla, Rajni Burra, Steven Wade Sutherland
  • Patent number: 10566793
    Abstract: A distributed synchronization method for interconnecting a microgrid with adjacent power grids at multiple points of interconnections. Receiving a request to connect to the microgrid from a first identified adjacent power grid. Synchronization controllers for each generator of the microgrid identify the generator connecting to the point of common coupling between the microgrid and the first adjacent power grid, and assigns the generator as a leader generator. Determining a frequency synchronization correction and a voltage synchronization correction by the synchronization controller of the leader generator, from synchronization parameters received from the first adjacent power grid. Adjusting active and reactive outputs of the follower generators and the leader generator and connecting the first adjacent power grid with the microgrid when a set of predetermined thresholds are satisfied.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: February 18, 2020
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Hongbo Sun, Shahil Shah
  • Patent number: 10554044
    Abstract: A method for optimizing reactive power generation of an electrical power system includes generating, via a plurality of cluster-level controllers, a cluster-level reactive power command for each cluster of electrical power subsystems based on a system-level reactive power command. The method also includes determining, via the cluster-level controllers, a subsystem-level reactive power command for each of the electrical power subsystems based on the cluster-level reactive power command. Further, the method includes evaluating, via a plurality of subsystem-level controllers, reactive power capability of a plurality of reactive power sources within each of the electrical power subsystems. Moreover, the method includes generating, via each of the subsystem-level controllers, an actual reactive power for each of the electrical power subsystems based on the evaluation by allocating a portion of the subsystem-level reactive power command to each of the plurality of reactive power sources.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: February 4, 2020
    Assignee: General Electric Company
    Inventors: Rajni Kant Burra, Robert Gregory Wagoner, Govardhan Ganireddy, Saurabh Shukla
  • Patent number: 10544780
    Abstract: A method for controlling a wind power plant, the wind power plant including a plant controller for controlling a plurality of wind turbine generators. The method for controlling a wind power plant allows the wind power plant to continue operating through a grid fault in a weak grid environment. In the method, a fault recovery process is carried out with a wind turbine power controller during a wind turbine fault recovery state to determine a grid voltage (VWTG), compare the grid voltage to a predetermined reference voltage (Vref) to obtain a difference value, and determine a current reference (QrefVC) based on the difference value for generating a reactive current (Idref) for regulating the grid voltage to the predetermined reference grid voltage. A corresponding wind power plant is further provided.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: January 28, 2020
    Assignee: Vestas Wind Systems A/S
    Inventors: Manoj Gupta, Amit Kumar Gupta, Dilip Kumar Guru
  • Patent number: 10534328
    Abstract: A system including a power plant having thermal generating units that operate according to multiple possible operating modes, which are differentiated by a unique operational or maintenance schedule. The system further includes a hardware processor and machine readable storage medium on which is stored instructions that cause the hardware processor to execute a process related to optimizing the operational or maintenance schedule during a selected operating period. The process may include: receiving the selected operating period; selecting competing operating modes for the power plant during the selected operating period according to a selection criteria; simulating the operation of the power plant during the selected operating period for each of the competing operating modes and deriving simulation results therefrom; evaluating each of the simulation results pursuant to a cost function and, based thereupon, designating at least one of the competing operating modes as an optimized operating mode.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: January 14, 2020
    Assignee: General Electric Company
    Inventors: Sanyaswara Rao Ganti, Michael James O'Connor, Christopher Joseph Vreeman, Awadesh Kumar Tiwari, Venkata Jogi Janaki Suresh Mandapaka, Gaurav Nair
  • Patent number: 10523213
    Abstract: Various examples are provided for feedback control of power systems. The feedback control can provide simultaneous frequency regulation and economic operation of a power system. In one example, a method includes obtaining a frequency difference associated with a generator of a power system; determining an output power adjustment based at least in part upon the frequency difference and a cost function associated with the generator; and providing a power command to a secondary frequency control of the generator, the power command based upon the output power adjustment. In another example, a generator control system includes a primary frequency controller configured to control frequency droop of a generator of a power system; and a secondary frequency controller configured to adjust output power of the generator based at least in part upon a frequency difference associated with the generator and a cost function associated with the generator.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: December 31, 2019
    Assignee: University of South Florida
    Inventors: Lingling Fan, Zhixin Miao
  • Patent number: 10514663
    Abstract: A microgrid controller includes a database in communication with a processor. The processor is operable to receive at least one microgrid input, to determine a first plurality of optimal power characteristic levels at a corresponding one of a plurality of first time intervals for a first time period, and to determine a second plurality of optimal power characteristic levels of a device determined at a corresponding one of a plurality of second time intervals for a second time period. The first time intervals are found at a first frequency different than a second frequency of the second time intervals. One of the second plurality of optimal power characteristic level corresponds to one of the first plurality of optimal power characteristic levels at each first time interval. The processor is configured to control a device optimal power characteristic level in response to the second plurality of optimal power characteristic levels.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: December 24, 2019
    Assignee: United Technologies Corporation
    Inventors: Yiqing Lin, Stella M. Oggianu
  • Patent number: 10508597
    Abstract: A system includes a controller coupled to an inlet bleed heat system of a compressor. The controller is configured to detect an icing condition of an inlet portion of the compressor by determining a current compressor efficiency value of the compressor, a current compressor flow value of the compressor, or any combination thereof, comparing the current compressor efficiency value to a compressor efficiency model of the compressor, the current compressor flow value to a compressor flow model of the compressor, or any combination thereof, and providing an icing indication to the inlet bleed heat system if a first difference between the current compressor efficiency value and the compressor efficiency model is greater than a first threshold, a second difference between the current compressor flow value and the compressor flow model is greater than a second threshold, or any combination thereof.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: December 17, 2019
    Assignee: General Electric Company
    Inventors: Prabhanjana Kalya, Sidharth Abrol, Matthew John McKeever, David Spencer Ewens
  • Patent number: 10498271
    Abstract: An integrated control system and method which improves load application/rejection performance for diesel generating sets is disclosed. Feedback-linearizing control is used for voltage regulation, which removes interaction between automatic voltage regulation and speed regulation. A proper feed-forward signal is sent to the governor using load anticipation control. The integrated control reduces engine speed and voltage deviations. It is implemented in the voltage regulator, since it recognizes load changes before the engine. The integrated control helps the engine anticipate throttle adjustments in advance of load being recognized by the engine. Test results show an improvement in engine speed recovery after a large increase or decrease in load.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: December 3, 2019
    Assignee: Basler Electric Company
    Inventors: Kiyong Kim, Jeffrey A. Burnworth
  • Patent number: 10495062
    Abstract: Embodiments herein describe varying the rotor speed based on the current wind speed when operating in a low power mode. Generally, as the wind speed increases above the rated wind speed (i.e., the wind speed at which the turbine is capable of producing its rated or maximum output power), the rotor speed can be reduced thereby minimizing the risk that the turbine experiences smearing or torque reversals. In one embodiment, as the rotor speed decreases, the turbine maintains the ability to ramp to the rated power of the turbine only by pitching in the blades to an optimal blade pitch angle. Thus, upon receiving a request to cease operating in the low power mode, the turbine can increase the output power to the rated power without first increasing the rotor speed.
    Type: Grant
    Filed: February 29, 2016
    Date of Patent: December 3, 2019
    Assignee: VESTAS WIND SYSTEMS A/S
    Inventors: Martin Ansbjerg Kjær, Robert Bowyer, Robert Grøn-Stevens, Jacob Deleuran Grunnet, Carsten Nørlund Thomsen, Jesper Sandberg Thomsen
  • Patent number: 10487477
    Abstract: The present invention relates to an apparatus and method for controlling a construction machine. An apparatus for controlling a construction machine according to an embodiment of the present invention may compare a fuel efficiency gain expected when engine revolutions per minute (RPM) is decreased with a fuel efficiency gain expected when a current torque curve is changed to a torque curve corresponding to a condition in which auxiliary power is provided and selected from among the plurality of torque curves and then the latter torque curve is selectively applied, based on the fuel efficiency map, and may control an engine by means of a method by which a larger fuel efficiency gain is expected.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: November 26, 2019
    Assignee: DOOSAN INFRACORE CO., LTD.
    Inventors: Hong Cheol Yun, Byoung Heon Park
  • Patent number: 10483761
    Abstract: Power management device includes memory, classification portion, planning portion and indication portion. Classification portion classifies a change in monitoring power during a unit period with respect to each of buildings, stored in memory, into any one of kinds of electric power patterns. Planning portion determines pattern sets based on the kinds of electric power patterns, and determines control content for charging and discharging of electric storage apparatus with respect to each pattern set under condition of minimizing any one of amount of electric power to be received from power grid, compensation of amount of electric power to be received from power grid, and amount of carbon dioxide to be exhausted. Indication portion indicates control content corresponding to each of pattern sets determined by planning portion to electric storage apparatus of a building, which each pattern set conforms with, of the buildings.
    Type: Grant
    Filed: July 4, 2014
    Date of Patent: November 19, 2019
    Assignee: Panasonic Corporation
    Inventors: Akira Baba, Haruka Nakasone
  • Patent number: 10465659
    Abstract: The present disclosure relates to a control system for a wind turbine comprising more controllers and where at least some of the controllers operate at different sample frequencies. The control system comprises at least two controller units, a first controller (10) for determining an operational value (OV) of a sub-system and a second controller (20) for the sub-system. The second controller operates at a higher sample frequency than the first controller. It is disclosed that a faster reaction to a received demand value (V1), received for controlling the sub-system, can be obtained by setting the operational value (OV) of the sub-system as the sum of an internal operational value (V5) and a difference value (V4).
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: November 5, 2019
    Assignee: VESTAS WIND SYSTEMS A/S
    Inventors: Keld Hammerum, Martin Ansbjerg Kjær, Jesper Sandberg Thomsen, Eik Herbsleb, Tobias Gybel Hovgaard
  • Patent number: 10440504
    Abstract: Systems and methods of inspecting a wind turbine system are provided. In particular, a user device located proximate a wind turbine can obtain location data and component data associated with one or more components of the wind turbine. The component data can be associated with the location data. Maintenance data can then be determined based at least in part on the location data and the component data. The maintenance data can be associated with one or more repair procedures for the one or more components. The maintenance data can then be provided for display by the user device.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: October 8, 2019
    Assignee: General Electric Company
    Inventors: Raymond Francis Rose, Jr., Neils Chris Schmitt, Quinn Schneller
  • Patent number: 10428792
    Abstract: A wind turbine includes a hub sub-system comprising a main hub and a shaft adapted to rotate about an axis, and a plurality of turbine blades having a pitch angle. The blades are adapted to drive the rotation of the hub sub-system to a first speed. The wind turbine further includes a pitch drive sub-system including a driving element adapted to rotate about the axis at a second speed, and further adapted to control the pitch angle of the turbine blades in relation to a difference between the first speed and the second speed. A slip enhanced generator enables the hub sub-system to rotate at a different speed than the pitch drive sub-system. The difference in speed is governed by a slip function. The wind turbine further includes an active control system adapted to control the second speed of the driving element.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: October 1, 2019
    Inventor: Wes Illing
  • Patent number: 10404066
    Abstract: A power-system management system and a method thereof, which generally manage congestion of a power system by relieving a power transmission line from being overloaded when the power transmission line is overloaded due to a rapid increase in load or the occurrence of credible accidents in the power system. To relieve the overload of the transmission line, the amount of power generated by a generator may be reduced, energy may be supplied from an energy storage device to the transmission line, or those two methods may be used together. There is provided a method of quantitatively calculating the amount of a generator's generated power desired to be reduced and the amount of power to be supplied from the energy storage device to the transmission line, in order to relieve the overload of the transmission line.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: September 3, 2019
    Assignee: EN Technologies Inc.
    Inventors: Young Doug Moon, Wan Kyun Ham, Tay Seek Lee
  • Patent number: 10389168
    Abstract: Various embodiments include an “Intuitive System” which detects the state of grid power at home or in commercial places and/or regions and manages the operation of various electrical and electronic systems accordingly. In various embodiments, a server may receive data from devices positioned throughout the grid. The server may aggregate, analyze, present, and/or act upon the received data. The system may enable providers to manage the health of grid power, monitor reports of power failures, analyze causes and durations of failures, engage in demand response, determine peak power demands, etc. The system may actively reduce demands for power, including, for example, by selectively reducing grid power available to constituents. However, constituents may have the capability to turn to back-up power systems, whose existence may be a determining factor in which constituents receive reduced grid power. The Intuitive System may also reduce grid load by turning down high-power devices.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: August 20, 2019
    Inventor: Shailendra Suman
  • Patent number: 10381840
    Abstract: A photovoltaic (PV) power station includes at least one AC power production unit. The AC power production unit includes an energy reservoir that is supplied with DC energy from a DC power generator, such as PV panels. The energy reservoir is used as a buffer to store energy, and improve the efficiency of the PV power station. Whether or not an energy reservoir is used, decoupler devices may be used to prevent power annihilation that can decrease the amount of power delivered by the power station to the grid. In system integration for a PV power station, it is found that the declared rating of DC/AC converter in power grid convention should not be taken as the power conversion capability.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: August 13, 2019
    Assignee: LT LIGHTING (TAIWAN) CORP.
    Inventors: Geoffrey Wen-Tai Shuy, Jau-Dar Liao, Hsin-Chen Lai, Feng-Tse Chung, Hsiu-Wen Han
  • Patent number: 10374431
    Abstract: A converter system for interconnecting renewable energy sources with a DC distribution bus comprises a converter unit which comprises an isolated DC-to-DC converter connectable to the renewable energy source, and a non-isolated DC-to-DC converter connectable to the DC distribution bus, which is cascade connected with the isolated DC-to-DC converter.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: August 6, 2019
    Assignee: ABB Schweiz AG
    Inventors: Francisco Canales, Frederick Kieferndorf, Drazen Dujic
  • Patent number: 10375806
    Abstract: A lighting control system controls a light source that emits light to a space in which subjects stay. The lighting control system includes: an communication interface that obtains stay schedule information indicating scheduled periods in an operation period after a first time and before a second time later than the first time, the scheduled periods being periods during each of which a corresponding one of the subjects is to stay in the space; and a processor that creates an illumination schedule for causing the light source to emit the light, based on the stay schedule information, and causes the light source to emit the light according to the illumination schedule created. The processor creates, based on the stay schedule information, the illumination schedule for causing the light source to emit the light during a period including a scheduled period common to at least two of the subjects.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: August 6, 2019
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventor: Kazuhiro Hatta
  • Patent number: 10364796
    Abstract: The invention relates to a method of controlling a wind turbine, the wind turbine comprising wind turbine blades attached to a rotor hub and a control system for pitching the blades relative to the hub. The method comprises providing wake sectors assigned to different wind directions and providing a normal pitch schedule to control an output parameter of the wind turbine (e.g. power, rotational speed), comprising pitch reference values as a function of the wind speed and at least one of the parameters of thrust coefficient Ct and axial induction factor a. Further, is provided a modified pitch schedule to control a modified output parameter of the wind turbine, comprising pitch reference values in dependence of the wind speed and at least one modified parameter of the thrust coefficient and/or the axial induction factor.
    Type: Grant
    Filed: September 16, 2014
    Date of Patent: July 30, 2019
    Assignee: VESTAS WIND SYSTEMS A/S
    Inventors: Per Brath, Martin Ansbjerg Kjær, Jesper Sandberg Thomsen
  • Patent number: 10352795
    Abstract: A measurement processing system suitable for supporting condition monitoring of a wind turbine based upon measurements performed on electrical and mechanical parts of the wind turbine, and, while determining whether the wind turbine is connected to the electrical grid or not, determining information representative for shaft torque of the wind turbine and suited for condition monitoring of the wind turbine, based on said measurements.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: July 16, 2019
    Assignee: LABORELEC CVBA
    Inventors: Koenraad De Bauw, Yann Pankow
  • Patent number: 10352301
    Abstract: A method of operating a wind power plant in a weak grid environment is provided to achieve desired system stability criteria and to support an electrical grid during disturbances or faults. The wind power plant is coupled to an electrical grid, and includes a power plant controller for controlling a plurality of wind turbine generators. The method includes, when a weak grid criterion is fulfilled, setting the power plant controller to operate in a weak grid mode by providing, when a grid voltage deviates beyond a threshold voltage, a reduced active power reference to the plurality of wind turbine generators. The method further includes, when the electrical grid recovers, generating a reduced amount of active power based on the reduced active power reference.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: July 16, 2019
    Assignee: VESTAS WIND SYSTEMS A/S
    Inventors: Manoj Gupta, Ravi Kumar
  • Patent number: 10333312
    Abstract: This disclosure includes various systems and methods for determining an operating stage based on electrical conditions in electric power delivery systems and identifying a control strategy based upon the operating stage. The control strategy may be selected and customized to avoid or to ameliorate stresses in an electric power delivery system while maintaining the stability of electric power delivery systems. Various embodiments consistent with the present disclosure may include a distributed controller configured receive a plurality of indications of electrical conditions from a plurality of control devices in electrical communication with the electrical power delivery system. The distributed controller may determine an operating stage from among a plurality of operating stages based upon the plurality of indications of electrical conditions. The distributed controller may further identify a control strategy based upon the operating stage.
    Type: Grant
    Filed: June 13, 2014
    Date of Patent: June 25, 2019
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Gregary C. Zweigle, Ellery A. Blood
  • Patent number: 10333346
    Abstract: A computer-implemented method for controlling voltage fluctuations of a microgrid including a plurality of distributed generators (DGs) is presented. The computer-implemented method includes collecting, by a resiliency controller including at least a voltage control module, measurement data from the microgrid, using, by a reactive power estimator, reactive power estimations to calculate an amount of reactive power for each of the DGs, and using a dynamic droop control unit to distribute the reactive power to each of the DGs of the microgrid.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: June 25, 2019
    Assignee: NEC Corporation
    Inventors: Feng Guo, Ratnesh Sharma
  • Patent number: 10316833
    Abstract: A non-linear power equation may be solved in linear form by locking one or more variables and iteratively solving to accurately and quickly estimate optimized power solutions for hydroelectric power stations. Additionally, these iterative calculations may provide for long term water resource planning and more accurate estimation models. Further, such optimized power solutions may be usable to create accurate and timely water management models for the operation and planning of hydroelectric power stations.
    Type: Grant
    Filed: January 26, 2011
    Date of Patent: June 11, 2019
    Assignee: Avista Corporation
    Inventors: Clint Kalich, Xin Shane
  • Patent number: 10312683
    Abstract: A method for network regulation on threshold value overshoots in a low voltage or medium voltage network, wherein control commands are transmitted from a central regulator of the low or medium voltage network to controllable components of the low voltage or medium voltage network, where information is continuously transmitted from each of the controllable components to the central regulator regarding their emergency reserves for reducing threshold value overshoots, upon a threshold value overshoot, the central regulator calculates the necessary correction and transmits a suitable action instruction to at least one controllable component, with each action instruction, a probability factor is also transmitted which is incrementally raised if, given an insufficient reaction of the controllable components, the threshold value overshoot is not prevented and thus an action instruction must be transmitted anew, and the central regulator informs the network operator if the emergency reserves of the controllable compo
    Type: Grant
    Filed: June 14, 2016
    Date of Patent: June 4, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventors: Alfred Einfalt, Tobias Gawron-Deutsch
  • Patent number: 10303142
    Abstract: A method for network regulation upon threshold value overshoots in a low voltage or medium voltage network, wherein control commands are transmitted from a central regulation unit of the low or medium voltage network to controllable components of the low voltage or medium voltage network, where upon occurrence of the threshold value overshoot, the central regulation unit calculates the necessary correction and transmits a suitable action instruction to at least one controllable component, with each action instruction, a probability factor is also transmitted which is incrementally raised if, given an insufficient reaction of the controllable components, the threshold value overshoot is not prevented and thus an action instruction must be transmitted anew, and the central regulation unit informs the network operator if the emergency reserves of the controllable components are insufficient to prevent the threshold value overshoot.
    Type: Grant
    Filed: June 14, 2016
    Date of Patent: May 28, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventors: Alfred Einfalt, Tobias Gawron-Deutsch
  • Patent number: 10296073
    Abstract: Computing devices receive power from multiple fuel cells, consuming natural gas and outputting electrical energy natively consumable by the computing devices. The fuel cells are sized to provide power to a set of computing devices, such as a rack thereof. The computing devices of a failed fuel cell can receive power from adjacent fuel cells. Additionally, the fuel cells and computing devices are positioned to realize thermal symbiotic efficiencies. Controllers instruct the computing devices to deactivate or throttle down power consuming functions during instances where the power consumption demand is increasing faster than the power being sourced by fuel cells, and instruct the computing devices to activate or throttle up power consuming functions during instances where the power consumption demand is decreasing faster than the power being sourced by the fuel cells. Supplemental power sources, supplementing the fuel cells' inability to quickly change power output, are not required.
    Type: Grant
    Filed: January 9, 2017
    Date of Patent: May 21, 2019
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Gregory Joseph McKnight, Shaun L. Harris, Sean M. James
  • Patent number: 10298161
    Abstract: Systems and methods for controlling a generator set are disclosed herein. The method includes determining a state of local modes selectable via a local interface proximate to the generator set. The local modes include a local standby mode and a local remote enabled mode. The method also includes determining a state of a plurality of remote modes using a command from a device remote from the location of the generator set in response to determining the remote enabled mode is active. The method includes, in response to determining the local standby mode is active, the remote enabled mode is active, and one of the remote modes is active, determining whether to activate or stop the generator set based on the active remote mode and disabling the local standby mode from controlling activation of the generator set.
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: May 21, 2019
    Assignee: Cummins Power Generation IP, Inc.
    Inventor: Dan G. Priem
  • Patent number: 10288043
    Abstract: The present application includes wind turbine condition monitoring method and system.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: May 14, 2019
    Assignee: ABB Schweiz AG
    Inventors: Rongrong Yu, Niya Chen, Yao Chen
  • Patent number: 10291024
    Abstract: A control method performed in a microgrid. The microgrid includes at least one electrical power source and/or configured for injecting electrical power into the microgrid, a first point of common coupling (PCC) configured for allowing a first power flow between the microgrid and a first power grid, and a second PCC configured for allowing a second power flow between the microgrid and a second power grid. The method includes obtaining information about a change in the first power flow, and controlling the second power flow based on the obtained information.
    Type: Grant
    Filed: November 4, 2014
    Date of Patent: May 14, 2019
    Assignee: ABB Schweiz AG
    Inventors: Ritwik Majumder, Joydeep Mukherjee, Eyke Liegmann
  • Patent number: 10283961
    Abstract: An object of the invention is to economically operate a voltage reactive power control device by reducing a transmission loss and reducing the number of tapping operations affecting the life span of a facility. Provided is a voltage reactive power control device including a central monitoring device that includes a loss prediction information output unit calculating a bus voltage on the basis of a generation probability of a power generation pattern, and outputting loss prediction information associated with the bus voltage from system configuration information, and includes a control amount determination unit determining a control pattern of the voltage reactive power control device from the loss prediction information. According to the invention, it is possible to economically operate a voltage reactive power control device by reducing a transmission loss and reducing the number of tapping operations affecting the life span of a facility.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: May 7, 2019
    Assignee: Hitachi, Ltd.
    Inventors: Satoshi Shimakura, Yoshikazu Ishii
  • Patent number: 10264612
    Abstract: Certain aspects of the present disclosure relate to methods and apparatus for discovering a controller function for wireless backhaul using cellular radio access technology (RAT) such as communications systems operating according to new radio (NR) technologies. For example, such a method may include connecting to a parent relay that provides connectivity to a controller function (CF) of a network, receiving, from the parent relay, information regarding at least one of: the CF or a radio access network (RAN) area covered by the CF, obtaining an identifier of the CF using the information, and connecting to the CF using the identifier.
    Type: Grant
    Filed: March 13, 2018
    Date of Patent: April 16, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Karl Georg Hampel, Soo Bum Lee, Hong Cheng, Gavin Bernard Horn, Vincent Douglas Park
  • Patent number: 10253758
    Abstract: The present disclosure is directed to systems and methods for optimizing power output of a wind farm. The method includes determining baseline loading condition(s) for wind turbines of the wind farm and defining a baseline threshold value for the load sensors. Another step includes identifying at least one wind turbine having at least one load sensor operating below the baseline threshold value. An upgrade is then provided to the identified wind turbine. In response to the upgrade, the method includes determining whether the load sensor of the identified wind turbine continues to operate below the baseline threshold value. The method also includes classifying an additional load sensor(s) of an additional wind turbine with respect to the load sensor of the identified wind turbine to determine whether to provide the additional wind turbine with the upgrade.
    Type: Grant
    Filed: September 23, 2014
    Date of Patent: April 9, 2019
    Assignee: General Electric Company
    Inventors: Steven Jay Tyber, Jianhui Chen, Scott Charles Evans, Kiersten Marie Ralston
  • Patent number: 10240586
    Abstract: A method is proposed for operating at least one wind turbine of a wind farm including determining wind turbine individual offset information based on reactive power provided by the respective wind turbine and reactive power provided by at least one further wind turbine of the wind farm, determining wind turbine individual control information based on the wind turbine individual offset information and wind farm specific control information, operating the at least one wind turbine according to the wind turbine individual control information. Further, a controller and a device as well as a computer program product and a computer readable medium are also provided.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: March 26, 2019
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Per Egedal, Anders Eriksen
  • Patent number: 10214821
    Abstract: An electrolyzer operates within an energy system, for example to provide grid services, energy storage or fuel, or to produce hydrogen from electricity produced from renewable resources. The electrolyzer may be configured to operate at frequently or quickly varying rates of electricity consumption or to operate at a specified power consumption. In one process of operating an electrolyzer, a series of dispatches is received indicating a specified power consumption for a period of time. The dispatches may occur at least once every 30 minutes. The electrolyzer is operated according to the dispatches. Hydrogen produced by the electrolyzer is discharged to a natural gas system.
    Type: Grant
    Filed: May 27, 2013
    Date of Patent: February 26, 2019
    Assignee: HYDROGENICS CORPORATION
    Inventors: Nathaniel Ian Joos, Joseph Cargnelli
  • Patent number: 10205417
    Abstract: An electric system includes a local power controller and solar panel system that includes a plurality of solar modules on one or more branch circuits. A method for commissioning the electric system includes an installer using a commissioning device to send and receive information from a remote system and the local power controller performing an automatic self-test of the electric system. The results of the self-test may be packaged with photographs and measurements of the electric system and sent to a remote system where an inspector can inspect the electric system remotely. After receiving approval by the inspector, the local power controller may automatically activate each branch circuit of the electric system and thus enabling the electric system to generate electricity.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: February 12, 2019
    Assignee: Enphase Energy, Inc.
    Inventors: Patrick L. Chapman, Anant Kumar Singh
  • Patent number: 10167851
    Abstract: In one aspect, a system for monitoring and controlling the operation of wind turbines located within a wind farm may generally include first and second wind turbines. The first wind turbine may include a first turbine controller configured to monitor an operating parameter(s) associated with the first wind turbine and provide a first control interface for controlling the operation of the first wind turbine. The second wind turbine may include a second turbine controller configured to monitor an operating parameter(s) associated with the second wind turbine and provide a second control interface for controlling the operation of the second wind turbine. The system may also include a secondary computing device coupled to the second turbine controller. The second turbine controller may be configured to provide the secondary computing device access to the first control interface in order to allow the operation of the first wind turbine to be controlled.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: January 1, 2019
    Assignee: General Electric Company
    Inventors: William Borea Noto, Paul Oliver Caffrey, Joerg Hagmann
  • Patent number: 10164434
    Abstract: Systems and methods for injecting power into or extracting power out of a power network are provided. In a method, Thevenin parameters, in the form of at least a Thevenin voltage and a Thevenin resistance, of an equivalent Thevenin circuit are obtained with respect to each wire of the PCC. A total Thevenin power for all the wires is obtained, based on a specific amount of power at the PCC and the obtained Thevenin parameters. The method calculates an optimal current to be injected into or extracted from the PCC so as to inject or extract a specific amount of power. The calculation is based on the total Thevenin power and the Thevenin parameters. The method controls an injection or extraction of current at the PCC in accordance with the optimal current.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: December 25, 2018
    Assignee: UNIVERSITY OF CAPE TOWN
    Inventors: Michel Malengret, Charles Trevor Gaunt
  • Patent number: 10158718
    Abstract: In one example, a method is provided for a lighting node within a lighting infrastructure to communicate data to other nodes within a lighting sensory network. The method includes receiving, at the lighting node, a first message from a server instructing the lighting node to enter into a sensor transmit mode associated with a first type of sensor data, the first message including transmission parameters for transmitting secure sensor messages associated with the first type of sensor data to the other nodes and a retransmit base interval associated with the first type of sensor data. The method includes obtaining, at the lighting node, the first type of sensor data and recording a timestamp associated with a time the first type of sensor data was obtained.
    Type: Grant
    Filed: September 26, 2016
    Date of Patent: December 18, 2018
    Assignee: Verizon Patent and Licensing Inc.
    Inventor: Kent W. Ryhorchuk
  • Patent number: 10152076
    Abstract: A system and method is provided that facilitates aggregation of a plurality of controllable distributed energy resources (DERs). A processor may be configured to determine DER forecasts including non-influenced power profile forecasts for a plurality of DERs that include different types of load assets that consume power, for when the DERs are not influenced via dispatches from the system, based at least in part on different physics characteristics associated with the different types of the DERs. The processor may also determine a combined reserve capacity forecast for aggregated DERs including both power assets that output power and the different types of load assets, based at least in part on an aggregation of the non-influenced power profile forecasts. In addition, the processor may control at least some of the plurality of DERs based at least in part on the combined reserve capacity forecast.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: December 11, 2018
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Aditya Aggarwal, Erich Fuchs, Pierre Mullin
  • Patent number: 10132294
    Abstract: Method for feeding electric power into an electric supply grid by means of a wind farm, wherein the wind farm feeds into the supply grid from an interconnecting network and via a transformer, with the first interconnecting network having a interconnecting network voltage and the supply grid having a grid voltage, wherein feeding takes place based on a virtual measured voltage and a voltage of a virtual measurement point is calculated as the virtual measured voltage.
    Type: Grant
    Filed: August 1, 2014
    Date of Patent: November 20, 2018
    Assignee: Wobben Properties GmbH
    Inventors: Alfred Beekmann, Kai Busker
  • Patent number: 10103545
    Abstract: In an approach for detecting islanding effect in a power electrical network topology, a computer processor finds, in the power electrical network topology, a point of common coupling between a load and a distributed generation with potential islanding effect as well as a substation supplying power to said point of common coupling; collects operating parameters of the power grid in vicinity of said point of common coupling as well as in vicinity of said substation; determines whether islanding effect exists in said distributed generation and the load in accordance with a variation characteristic of the operating parameters of the power grid in vicinity of said point of common coupling and the operating parameters of the power grid in vicinity of said substation. Higher degree of accuracy and sensitivity of detecting islanding effect is achieved without compromising the energy quality on user side according to embodiments of the present invention.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: October 16, 2018
    Assignee: International Business Machines Corporation
    Inventors: Jian D. Ding, Feng Jin, Yuhang Liu, Junmei Qu, Qi M. Tian, Ya N. Zhang
  • Patent number: 10072634
    Abstract: The invention relates to a method for feeding electrical power into an electrical supply network by means of at least a first and a second wind farm. A first electrical wind farm output is provided by the first wind farm to be fed into the electrical supply network and a second electrical wind farm output is provided by the second wind farm to be fed into the electrical supply network, and a total power output is generated from at least the first and second wind farm output and fed into the electrical supply network, wherein a central control unit for controlling the total power output that is fed in controls the provision of at least the first and second wind farm output.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: September 11, 2018
    Assignee: WOBBEN PROPERTIES GMBH
    Inventor: Kai Busker