Abstract: Systems and method are disclosed for monitor long-term voltage stability in a power system by estimating post-contingency operating point(s) considering PV-PQ transitions based on the current operating point; predicting a sensitivity based Thevenin index (STI) for each contingency using the estimated operating condition; and determining a voltage stability assessment (VSA) considering N?1 contingency.

Abstract: A system is disclosed that includes a memory and a processor to perform operations, including analyzing rail voltage drop for a full-chip to identify an IR drop violation in a block design of the full-chip. The operations include performing a block-level rail voltage drop analysis for the block design and generating a revised block design corresponding to the block design in which the IR drop violation is identified. The operations include performing a block-level rail voltage drop analysis on the revised block design to verify that the IR drop violation is fixed and integrating the revised block design into the full-chip to replace the block design upon verifying that the IR drop violation is fixed. The operations include performing the rail voltage drop analysis for the full-chip comprising the revised block design.

Abstract: A method for controlling an inverter, and in particular a double stage inverter, for implementing a model of a synchronous generator is provided including implementing a rotor inertia using an intermediate dc-link capacitor without duplicating the emulated inertia in the controller, simulating the rotor speed based on a measured voltage of the dc-link capacitor, while allowing the voltage to change in a defined range, and mapping the changing voltage of the dc-link capacitor into the inverter as an internal frequency. A system for connecting a power generator to a power grid is also provided including a control device for an inverter, the control device implementing a model of a synchronous generator. The control device including a computer processor in electrical communication with a storage device with instructions stored thereon, that when executed on the computer processor, perform the method for controlling an inverter for implementing a model of a synchronous generator.

Abstract: An actual power generation amount receiver acquires an actual power generation amount of a photovoltaic power generation system of each time slot of each day. An extraterrestrial solar radiation calculator calculates an extraterrestrial solar radiation of each time slot of each day at a disposition position. A weather information receiver acquires an actual weather record of each time slot of each day and a weather forecast of a prediction target time slot. A similar date extractor classifies a time slot, which is the same as a prediction target time slot of each day in a search range in which an actual power generation amount is acquired, as a similar time slot for each actual weather record type. A prediction formula deriver derives a power generation amount prediction formula for calculating a predicted power generation amount based on an actual power generation amount.

Abstract: A computer-implemented method and related device are disclosed for determining a plurality of operating scenarios of an energy system. The method comprises obtaining a plurality of performance measures of the energy system as a function of time corresponding to a plurality of sets of values of input variables. The method comprises clustering the plurality of sets of values of the input variables and the performance measures associated therewith into groups and defining a descriptor for each of the groups. The method also comprises outputting the descriptors of the groups for use in an online prediction or offline estimation of the energy system.

Abstract: Disclosed is a method and system for using a credit-based approach to scheduling workload in a compute environment. The method includes determining server capacity and load of a compute environment and running a first benchmark job to calibrate a resource scheduler. The method includes partitioning, based on the calibration, the compute environment into multiple priority portions (e.g. first portion, second portion etc.) and optionally a reserve portion. Credits are assigned to allocate system capacity or resources per time quanta. The method includes running a benchmark job to calibrate a complexity of supported job types to be run in the compute environment. When a request for capacity is received, the workload is assigned one or more credits and credits are withdrawn from the submitting entity's account for access to the compute environment at a scheduled time.

Abstract: An electrical power distribution system includes a plurality of circuit protection devices coupled between an electrical power source and a plurality of electrical loads. Each circuit protection device includes a trip unit, a network interface communicatively coupled to a communication network including the circuit protection devices, a processor, and a memory. The memory stores instructions that, when executed by the processor, cause the processor to store test operational parameters associated with the circuit protection device, receive a test message including test data representing an electrical condition in the electrical power distribution system, adjust the test operational parameters based on the test data to simulate a response of the trip unit to the electrical condition, generate circuit protection data based on the test data and the adjusted set of test operational parameters, and transmit the circuit protection data to at least one of the communication network and a remote access device.

Abstract: Taking parameters of a main circuit in a BBMC as optimization objects, and a total harmonic distortion of an output voltage of the BBMC, a deviation between an actual output current and a corresponding rated output current as optimization objectives, a mathematical model between optimization objects and optimization objectives is established. A multi-objective optimization satisfaction function and a multi-objective optimization fitness function are established by selecting a current rating as a rated output current of the BBMC. An adaptive wolf pack optimization algorithm is adopted to obtain a set of optimal parameters of the main circuit. The rated output current is changed to obtain n sets of optimal parameters, and functional relationships between the optimal parameters of the main circuit in the BBMC are obtained using a numerical fitting method. Optimal parameters of the main circuit corresponding to different current ratings are determined according to the functional relationships.

Abstract: A building system includes building equipment operable to consume one or more resources and a control system configured to generate, based on a prediction model, predictions of a load on the building equipment or a price of the one or more resources for a plurality of time steps in an optimization period, solve, based on the predictions, an optimization problem to generate control inputs for the equipment that minimize a predicted cost of consuming the resources over the optimization period, control the building equipment to operate in accordance with the control inputs, monitor an error metric that characterizes an error between the predictions and actual values of the at least one of the load on the building equipment or the price of the one or more resources during the optimization period, detect an occurrence of a trigger condition, and in response to detecting the trigger condition, update the prediction model.

Abstract: Example systems and methods are disclosed for estimating wire capacitance in an RTL circuit design. In an embodiment, a reference post-layout design is received from a non-transitory storage medium, and gate-level nets within the reference post-layout design are classified as either long nets or short nets based, at least in part, on an average fanout length within the gate-level net. A parasitic model may be generated for each of the gate-level nets, and the gate-level nets and associated parasitic models may be stored within either a long net database or a short net database based on the classification of the gate-level net. A net from the RTL circuit design may be classified as either long or short based, at least in part, on a number of modules crossed by one or more fanouts within the net. If the net from the RTL circuit design is classified as long, then capacitance for the net may be estimated using a parasitic model selected from the long net database.

Abstract: Embodiments provide a method for constructing a future-state power grid model and device, including that: a current power grid model, an equipment power-off plan, an equipment retirement plan and an equipment addition plan are acquired; then, equipment is added according to the current power grid model, and an added equipment information set, a retired equipment information set and a powered-off equipment information set are determined according to the equipment addition plan, the equipment retirement plan and the equipment power-off plan respectively; and finally, a state of the added equipment is set to be an operating state, an initial network model of each period is formed according to a time sequence, and a future-state network model is constructed according to the added equipment information set, the retired equipment information set, the powered-off equipment information set and the initial network models. The embodiments further provide construction equipment and a storage medium.

Abstract: A method for forming an integrated circuit (IC) is provided. The method includes the following operations. A circuit layout including a first load region and a second load region is received. A full power network of the circuit layout is obtained. The full power network is transformed into a first power network according to the first load region. A first power simulation is performed upon the first power network. The full power network is transformed into a second power network according to the second load region. A second power simulation is performed upon the second power network. The IC is fabricated according to the circuit layout.

Abstract: In example embodiments, there is provided a dynamic dispatcher simulator for an electrical power system. The dynamic dispatcher simulator can be operable to receive an input from a user identity during a run time, wherein the input represents a disturbance event indicative of a simulated disturbance to an electrical power system. Based on the input, a signal can be transmitted to a transient simulation engine component. The transient simulation engine component can output simulated phasor measurement unit data representative of the disturbance event to a wide area monitoring system that facilitates a display of alarms in response to the receipt of the simulated phasor measurement unit data. The dynamic dispatcher training simulator can also receive another input from the user during the run time, the second input being representative of a simulated condition related to the electrical power system.

Abstract: The disclosed technology provides methods for performing a power delivery network analysis of the memory unit I/O power domain. The methods include performing a signal and power integrity analysis for a memory unit I/O power domain to extract characteristics of a current waveform, determining characteristics of an expected waveform based on a current response for the memory unit I/O power domain, and determining whether the characteristics of the current waveform and the characteristics of the expected waveform are within a tolerance limit. The method also includes various remedial operations and CPM regeneration which may iteratively occur until the waveform matches and final CPM is generated which is use for PDN analysis.

Abstract: Systems and methods for the configuration of service policies for aircraft fleets and gas turbine engines are disclosed. One or more engine performance profiles may be generated based on historical engine performance data. The historical engine performance data may be retrieved based on one or more engine service parameters. A fleet performance profile may be generated based on the engine performance profiles. The engine service parameters may be varied to generate a configured engine performance profile. A configured fleet performance profile may be generated based on the configured engine performance profile.

Abstract: A control parameter is adjusted without the need to operate a driver of a control target. A control device (10) includes a model identification unit (12), a parameter determination unit (132), a data evaluation unit (131) and an operation data calculation unit (133). The model identification unit (12) identifies a physical model of an operation of the control target. The operation data calculation unit (133) calculates operation data by using the physical model and the control parameter. The data evaluation unit (131) calculates an evaluation value by using normative data of the operation of the control target and the operation data. The parameter determination unit (132) determines the control parameter by using the evaluation value.

Abstract: In certain aspects of the disclosure, a chip includes an isolation device, wherein the isolation device is configured to allow a signal to pass from a first circuit in a first power domain to a second circuit in a second power domain via a signal line that crosses between the first and second power domains when the isolation device is disabled, and to clamp a portion of the signal line in the second power domain to a logic state when the isolation device is enabled. The chip also includes a failure detector configured to detect an imminent power failure of at least one of the first power domain or the second power domain, and to enable the isolation device in response to detection of the imminent power failure.

Abstract: A simulation apparatus includes a memory, and a second processor configured to detect an internal state of the first processor in the operation simulation, when a target block in the operation simulation changes, the target block being included in blocks obtained by dividing code of the program, generate association information in which the internal state detected by the detecting section and performance values of instructions included in the target block in the detected internal state are associated with each other, and execute an execution code that allows a performance value when the first processor executes the target block to be calculated based on the association information, by using the internal state detected and the association information generated for the target block, to thereby calculate a performance value when the first processor executes the target block.

Abstract: A microgrid according to an exemplary aspect of the present disclosure includes, among other things, a plurality of intelligent electronic devices configured to communicate directly with one another in a first language. Each of the intelligent electronic devices includes a controller and a gateway. The gateway is configured to convert incoming messages from the first language to a second language native to the controller. The first language is different than the second language. A method is also disclosed.

Abstract: This disclosure involves verifying that a power network model corresponds to an electric power network providing electrical power in a geographical area. For instance, a validation device computes a validation score for a power network model based on a connectivity score, an asset score, and a power-flow score. The connectivity score indicates connectivity errors in the power network model as compared to the power network. The asset score indicates power-delivery errors in the power network model with respect to power-consuming assets serviced by the power network. The power-flow score indicates power-flow calculation errors in the power network model with respect to voltage ranges for the power network. The validation score is repeatedly computed for iteratively updated versions of the power network model until a threshold validation score is obtained. The validated power network model is provided to a control system for identifying and correcting errors in the power network.

Abstract: In planning and engineering an automation solution which comprises an automation system and a process engineering plant, objects that represent the components of the configured automation solution are imported by means of a simulation tool to simulate the automation solution on the basis of simulation models associated with the imported objects. Attributes contained in objects which represent the hardware components of the automation system and which describe IT security events that may be generated by the components are entered into the associated simulation models for simulatively generating security events in a simulation of the automation solution, for transferring the simulatively generated security events to a Security Information Event Management (SIEM) system for evaluation, and for using the results of the evaluation generated by the SIEM system to simulate the automation solution.

Abstract: An example device includes a processor configured to receive a plurality of voltage values corresponding to voltage nodes in a first portion of a power system and determine, for each voltage node, a respective value of first and second voltage-constraint coefficients. The processor is also configured to receive a power value corresponding to a connection point of the first portion of the power system with a second portion of the power system and determine for the connection point, a respective value of first and second power-constraint coefficients. The processor is also configured to cause at least one energy resource connected to the first portion of the power system to modify an output power of the at least one energy resource based on the value of the first and second voltage-constraint coefficients for each voltage node and the value of the first and second power-constraint coefficients.

Abstract: A distributed test method applicable to a system-level test of intelligent high voltage equipment. The method includes: firstly, carrying out unified modeling on test equipment behaviors according to test requirements, and generating a general test case for ensuring accuracy and coordination of test behaviors and test time sequences under various work conditions; then, extracting, according to a feature element of role defining, sequence states of same roles from the general test case, and recombining the sequence states according to an execution sequence so as to form test sub-cases of the roles; finally, executing, by each piece of test equipment, corresponding test sub-cases to achieve cooperative linkage by means of information interaction, so as to accomplish entire process simulation of the test conditions.

Abstract: A method performed by at least one processor includes: accessing a layout of an integrated circuit (IC), the layout comprising a resistor-capacitor (RC) netlist comprising a plurality of circuit nodes; identifying an RC network in the RC netlist; determining a characterization matrix corresponding to the RC network; updating the RC netlist by replacing the RC network with the characterization matrix; and calculating voltages and currents of the plurality of circuit nodes based on the updated RC netlist.

Abstract: Systems and methods for integrating ultra-fast programmable networks in microgrid are disclosed to provide flexible and easy-to-manage communication solutions, thus enabling resilient microgrid operations in face of various cyber and physical disturbances. The system is configured to establish a novel software-defined networking (SDN) based communication architecture which abstracts the network infrastructure from the upper-level applications to significantly expedite the development of microgrid applications, develop three functions of the SDN controller for microgrid emergency operations, including time delay guarantee, failover reconfiguration and rate limit and create a hardware-in-the-loop cyber-physical platform for evaluating and validating the performance of the presented architecture and control techniques.

Abstract: A system for monitoring a power system and controlling an operation is provided. The system includes: a process setting unit receiving a process modeling file from a user and setting, as a process setting model, a process modeling file on which process verification is completed; a process verification unit performing the verification of preset process modeling items on the process modeling files received from the user; and a data storage unit storing file information for the operation of a system, the process modeling file, process modeling verification results, and the process setting file.

Abstract: A gas sensor is provided in which a solid electrolyte tape of yttria doped zirconia is layered with tapes of alumina and a tape if mixed alumina-zirconia. This zirconia layer has structural modifications to increase NOx and NH3 sensitivity which the capacitance is significantly increased by creating a composite layer of platinum (Pt) plus a layer of yittrium-stabilized-zirconia (YSZ) with Pt fraction of approximately between around 10% by volume to around 25% by volume. A 100-200 ?m thick mixed tape layer of porous MgAl2O4 is provided on top of the alumina-zirconia layer. Under the alumina-zirconia tape is an exhaust gas sensing electrode which connects to a contact pad through the lead. A reference electrode, which connects to the pad through a lead, is disposed in fluid communication with a reference chamber. Proximate alumina tapes and a heater are connected to the contact pad, which is connected to corresponding leads.

Abstract: A power transmission network includes an AC electrical system, an AC transmission link from the AC electrical system to AC-DC converter(s), and a control system. AC-DC converter(s) include an AC connecting point connected to the AC transmission link and a DC connecting point for connection to a DC transmission link. The control system operates each AC-DC converter in an AC voltage control mode as an AC slack bus to control a magnitude and/or a frequency of an AC voltage of the AC transmission link at a steady-state value and facilitating a power transfer between its connecting points to accommodate power generated or supplied to the AC electrical system. The control system further operates each AC-DC converter in a protection mode to protect each AC-DC converter from an overvoltage and/or an overcurrent.

Abstract: Techniques are provided for determining predicted results for entities based on relatedness of the entities in a graph of nodes. In an embodiment, the graph of nodes is generated based on the determined relatedness of the entities. A node in the graph of nodes represents an entity, and nodes representing entities with known results are assigned those results as their respective node values. The assigned node values are then propagated between the neighboring nodes throughout the graph of nodes in the amount determined by the relatedness of the nodes. Based on the propagation, node values for entities with unknown results are determined and represent the predicted results for those entities. Additionally, various classifiers may be combined with the propagated node values to increase the accuracy of the predicted results.

Abstract: A non-transitory computer-readable recording medium stores a model generation program that causes a computer to execute a process. The process includes obtaining measurement data on measurement points sequentially measured along a measurement path curve generated from a Hilbert curve laid out in a normalized space in which measurement target ranges of respective plurality of control parameters related to control of an object to be measured are normalized, the measurement points being more in number in a specific area of the measurement target ranges than in an area other than the specific area, and the numbers of measurement points lying on two sides in each group of two adjacent sides of the measurement path curve and where a control parameter changes in opposite directions being balanced; and generating a control model of the object to be measured on the basis of the obtained measurement data of the measurement points.

Abstract: A computer-implemented method includes receiving a unit, wherein each unit includes one or more blocks. The computer-implemented method further includes selecting one or more input pins for each of said one or more blocks. The computer-implemented method further includes assigning a numerical value to each of said one or more input pins to yield at least one numerical sequence. The computer-implemented method further includes, for each numerical sequence of the at least one numerical sequence, performing a check on the numerical sequence to yield a number of fails. The computer-implemented method further includes determining a simulation condition for power modeling of the unit based on optimizing a numerical sequence with respect to the number of fails. The computer-implemented method further includes determining a number of design errors of the unit based on the simulation condition. A corresponding computer system and computer program product are also disclosed.

Abstract: Methods and Systems for dynamic state estimation (DSE) in an electric power system (EPS) having a multi-control area interconnected power network. Estimating current states of buses in a control area using historical data via a state transition model of buses of the control area. Receiving, a current state of 1-hop and n-hop neighboring buses located in neighboring control areas. A 1-hop neighboring bus connects to one boarder bus of the control area via a tie-branch and n-hop neighboring bus is connected to the 1-hop neighboring bus via at least one tie-branch, wherein n is greater than one. Determining measurements of states from buses in the control area. Finally, updating the current state of the buses using a measurement model on a basis of estimated current states of the control area, the received states from the neighboring control areas, and the measurements of states from buses in the control area.

Abstract: A method for performing battery cell control with aid of virtual battery mechanism includes the steps of: receiving a total output voltage level of a set of battery cells connected in series between a first battery control terminal and a second battery control terminal; generating a virtual total output voltage level according to the total output voltage level, and inputting the virtual total output voltage level to a third battery control terminal, wherein the virtual total output voltage level simulates an output voltage level of connecting the set of battery cells and at least one virtual battery cell in series; generating a supply voltage according to the total output voltage level to maintain generation of the virtual total output voltage level; and utilizing a battery cell control chip within a power supply device to control operations of the set of battery cells according to the virtual total output voltage level.

Abstract: Technologies for monitoring a characteristic of a monitored system include determining a measured value of the primary characteristic of the monitored system sensed by a primary sensor and a measured value of the secondary characteristic of the monitored system sensed by a secondary sensor, and predicating a predicted value of the primary characteristic based on the measured value of the secondary characteristic. The measured and predicted values of the primary characteristic are used to determine whether the primary sensor is properly functioning.

Abstract: A system collects and manages sets of asset data that are indicative of operational performance of physical assets disposed at multiple physical locations in a plant. The system includes a database that associates each set of asset data to (1) a location at which the data was collected, (2) the asset for which the data was collected, and (3) the monitoring device that was used to collect the data. In this way, each location has its own history of all asset data ever collected on all assets disposed at that location, and its own history of all monitoring devices used to collect data at that location. Also, each asset has its own history of all asset data collected on that asset at all locations at which it was disposed and for all monitoring devices. This sort of asset data is referred to herein as multi-referenced data.

Abstract: A control system for a gas turbine includes a processor. The processor configured to access one or more operating parameters of the gas turbine. The operating parameters are configured to specify how the gas turbine operates. The processor is configured to predict a rate of degradation to one or more parts of a compressor of the gas turbine due to one or more effects on the parts by operating the gas turbine according to the one or more operating parameters. The processor is configured to send an alert to an electronic device based at least in part on the rate of degradation of the compressor.

Abstract: The present disclosure provides a method and a device for controlling an active distribution network, relating to the field of power system operation and control technology.

Abstract: Information from a circuit design's unified power format (UPF) description is utilized to automate the management of reset domain crossings (RDCs). The UPF description is utilized to identify signals that generate both RDC and power domain crossings (PDCs), thereby allowing a circuit designer to efficiently utilize a common (shared) isolation circuit that functions to manage both the RDC (i.e., during reset functions) and the PDC (i.e., during power management functions). A modified UPF description is introduced that facilitates automated management of RDC issues by treating the reset domains as pseudo-power domains, and utilizing UPF analysis and verification tools to automatically generate both shared and non-shared resources for both RDC and PDC issues.

Abstract: Customized hardware provides a generator sizing interface to the user for selecting individual loads that may be present at a particular facility of building. The hardware and/or generator sizing interface receives one or more load selections from the user and, in response, generates a single line diagram or a one line diagram for power flow analysis based on the load selections. The hardware and/or generator sizing interface accesses a database for power requirements for the load selections of the diagram. A List of potential generators or an optimal generator is identified based at least in part on the power requirement of the load selections.

Abstract: A method of managing Proxy Objects by attaching Meta Data to each Proxy and HD Object. The Meta Data enables the user to programmatically swap one Proxy Object with one or more HD Objects. All Proxy Objects and HD Objects are stored in a secure database structure that protects the content owner's intellectual property while providing access by users to the proxy objects and all related product information. Non-technical and non-CAD users are able to configure objects within a space by selecting an object, browsing a catalog of possible alternative objects, viewing specific product details and then selecting the object to replace the selected object. Once a new object is selected. A photo realistic 360 image of a scene is created in real time without any special software on the user's computer or any special training.

Abstract: An apparatus for simulating a wind power farm includes a wind power generator simulator configured to act as a virtual wind power generator to dynamically generate an attribute value and provide the attribute value to a supervisory control and data acquisition (SCADA) system to be tested; a wind power generator simulation platform configured to generate and manage a plurality of wind power generator simulators within one system, monitor the system, monitor operation states of the plurality of wind power generator simulators, and transmit a result of monitoring the operation states; and a wind power farm controller configured to generate a wind power farm by grouping a plurality of wind power generator simulation platforms into a single cluster, and manage a simulation environment of the wind power farm.

Abstract: A method of estimating power consumption for a system on chip (SOC) includes simulating operation of a first sub-block to obtain power consumption information for the first sub-block including first activation information for a first IP block. The method further includes simulating operation of a second sub-block to obtain power consumption information for the second sub-block including second activation information for the first IP block and activation information for a plurality of second IP blocks. The method further includes determining a weighting factor for the first activation information for the first IP block, the second activation information for the first IP block and the activation information for each second IP block. The method further includes estimating power consumption for the SOC based on the first and second activation information for the first IP block, the activation information for at least one second IP block, and corresponding weighting factors.

Abstract: A power management apparatus includes an electric device including a plurality of operation algorithm information and power information for each operation level corresponding to each operation algorithm information, and a power management unit to receive power rate information from a power provider, determine an operation level of the electric device on the basis of the received power rate information and power information for each operation level of the electric device, and control an operation of the electric device at the determined operation level. As a result, the power management apparatus performs different operation algorithms according to power rate information, and controls power consumption of the electric device, such that energy efficiency at the user side can be maximized. In response to the changed power rate information, the currently-driven electric device and the electric device to be driven can be driven at the optimum operation level appropriate for their power consumption characteristics.

Abstract: A method and system for analyzing equipment degradation for maintaining the equipment are provided. The method and system receive and store equipment and sensor data associated with operational equipment, generate a display signal to display a relationship analysis window, a residual error window, a performance condition window, and a maintenance trigger window, and evaluate a coordinated relationship between the equipment sensor data and the environmental data, determine residual errors and determine a Historical Health Condition Index (HHCI) for the operational equipment and generate a Future Health Condition Index (FHCI) from the HHCI, and generate an equipment maintenance trigger for the operational equipment by establishing a trigger threshold for maintenance.

Abstract: Distributed energy resources are validated by dispatching a distributed energy resources individually in known ambient conditions and monitoring the particular effect of dispatch to then establish a database of performance for multiple different distributed energy resources. The distributed energy resources can be permanently monitored to further build up this database and to verify that the distributed energy resource is performing consistent with its validation or other expected performance. Distributed energy resources of a slow responding variety and a fast responding variety can be paired together and dispatched together, so that the paired fast responding and slow responding distributed energy resources mimic a large fast responding distributed energy resource. The benefits of a high capacity fast responding distributed energy resource is thus provided, such as for the load shedding and grid support benefits thereof.

Abstract: A method for solving a two-stage non-linear stochastic formulation for the economic dispatch problem under renewable-generation uncertainty. Certain generation decisions are made only in the first stage and fixed for the subsequent (second) stage, where the actual renewable generation is realized. The uncertainty in renewable output is captured by a finite number of scenarios. Any resulting supply-demand mis-match must then be alleviated using high marginal-cost power sources that can be tapped in short time frames. The solution implements two outer approximation algorithms to solve this nonconvex optimization problem to optimality including the application of a decomposition approach derived from the Alternating Direction Method of Multipliers (ADMM) algorithm.

Abstract: In steady-state voltage stability analysis, as load increases toward a maximum, conventional Newton-Raphson power flow Jacobian matrix becomes increasingly ill-conditioned so power flow fails to converge before reaching maximum loading. A method to directly eliminate this singularity reformulates the power flow problem by introducing an AQ bus with specified bus angle and reactive power consumption of a load bus. For steady-state voltage stability analysis, the angle separation between the swing bus and AQ bus can be varied to control power transfer to the load, rather than specifying the load power itself. For an AQ bus, the power flow formulation is only made up of a reactive power equation, thus reducing the size of the Jacobian matrix by one. This reduced Jacobian matrix is nonsingular at the critical voltage point, eliminating a major difficulty in voltage stability analysis for power system operations.

Abstract: Fault-tolerant power distribution systems for modular power plants are discussed. The systems enable the transmission of a portion of the power generated by a modular power plant to remote consumers. The systems also enable the local distribution of another portion of the generated power within the power plant. The various fault-tolerant systems enable the plant to continuously, and without degradation or disruption, transmit power to remote consumers and distribute power within in the power plant in the event of one or more faults within the distribution system. The various embodiments include redundant power-transmission paths, power-distribution module feeds, switchgear, and other hardware components.

Abstract: An equalization circuit may include a buffer configured to sense an input signal according to a reference voltage. The equalization circuit may include a reference voltage generator configured to generate the reference voltage. The reference voltage may be changed in conformity with noise of the input signal.

Abstract: Systems and methods to provide server side profile information. An LDAP server is provisioned for each user of a plurality of users. Profile information is received. The profile information is stored in a database associated with the LDAP server. Via the LDAP server, a suggestion from the profile information is provided in response to a partial entry provided by the user to a first client associated with the user.