Patents by Inventor Xianyong Feng

Xianyong Feng has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10411475
    Abstract: Unique systems, methods, techniques and apparatuses for cloud-based control for power distribution systems are disclosed. One exemplary embodiment is a system comprising a microprocessor-based power management system in operative communication with a plurality of buildings located remotely from the power management system and a plurality of communication interface devices provided at corresponding ones of the plurality of buildings. The power management system is structured to perform a plurality of building unit-specific optimizations, evaluate a net power demand on the electrical power grid, reduce the net power demand on the electrical power grid while minimizing disruption to the resident-defined preference parameters, and transmit to each of the plurality of interface devices the one or more additional control commands corresponding to the specific building at which each interface device is provided.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: September 10, 2019
    Assignee: ABB Schweiz AG
    Inventor: Xianyong Feng
  • Patent number: 10411587
    Abstract: Unique systems, methods, techniques and apparatuses of a DC fault isolation system are disclosed. One exemplary embodiment is a power conversion system comprising a converter including a midpoint connection structured to receive AC power, a first converter arm, a second converter arm, and a control system. The control system is configured to operate the converter a fault condition mode in response to a DC fault condition, wherein the fault condition mode operates at least one full bridge cell of the second converter arm so as to interrupt current flowing between the midpoint connection and the second DC bus rail and operates the first converter arm so as to allow the AC power to flow between the midpoint connection and the first DC bus rail in response to detecting the DC fault condition.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: September 10, 2019
    Assignee: ABB Schweiz AG
    Inventors: Li Qi, Helen-Xing Huang, Xianyong Feng, Jiuping Pan
  • Patent number: 10281338
    Abstract: A real time thermal monitoring and prediction system (TMPS) is provided for use in monitoring and operating a transformer. The TMPS may be used to estimate a maximum loading level for the transformer over a future time period using a dynamic thermal model for the transformer and ambient temperature forecasts. The transformer may be loaded to its maximum loading level during power congestion or a service restoration process.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: May 7, 2019
    Assignee: ABB Inc.
    Inventors: Xianyong Feng, Mirrasoul J. Mousavi
  • Patent number: 10192677
    Abstract: The present invention comprises an apparatus and method for detecting a loss of oil from an oil-immersed transformer, based on fitting a transformer top-oil temperature model to online measurements in an iterative optimization process that yields fitted values for a first model parameter representing the top-oil temperature rise over ambient temperature and a second model parameter representing the oil time constant. Among the several advantages seen in the contemplated apparatus and method is the reduction in required instrumentation, whereby transformer oil leaks are indirectly detected without requiring pressure sensors or mechanical floats, although the presence of such sensors is not excluded by the teachings herein.
    Type: Grant
    Filed: August 12, 2014
    Date of Patent: January 29, 2019
    Assignee: ABB Inc.
    Inventors: Xianyong Feng, Mirrasoul Mousavi
  • Publication number: 20180166972
    Abstract: Unique systems, methods, techniques and apparatuses of a DC fault isolation system are disclosed. One exemplary embodiment is a power conversion system comprising a converter including a midpoint connection structured to receive AC power, a first converter arm, a second converter arm, and a control system. The control system is configured to operate the converter a fault condition mode in response to a DC fault condition, wherein the fault condition mode operates at least one full bridge cell of the second converter arm so as to interrupt current flowing between the midpoint connection and the second DC bus rail and operates the first converter arm so as to allow the AC power to flow between the midpoint connection and the first DC bus rail in response to detecting the DC fault condition.
    Type: Application
    Filed: December 13, 2017
    Publication date: June 14, 2018
    Inventors: Li Qi, Helen-Xing Huang, Xianyong Feng, Jiuping Pan
  • Patent number: 9800044
    Abstract: Unique systems, methods, techniques and apparatuses of fault location in DC power distribution systems are disclosed. One exemplary embodiment is a DC power distribution system including a plurality of zones each including a DC power distribution line and a protective device. Each protective device structured to sense one or more electrical characteristics of a line and to controllably open a circuit including the line. At least one intelligent electronic device is structured to determine a line inductance based upon electrical characteristics sensed by one or more of the protective devices and to evaluate a location of the line fault based upon the determined line inductance.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: October 24, 2017
    Assignee: ABB Schweiz AG
    Inventors: Li Qi, Xianyong Feng, Jiuping Pan
  • Patent number: 9791495
    Abstract: Unique systems, methods, techniques and apparatuses of fault location in DC power distribution systems are disclosed. One exemplary embodiment is a DC power distribution system comprising at least one DC power distribution network and at least two protective devices operatively coupled to the DC power distribution network. Each protective device is structured to sense one or more electrical characteristics associated with the DC power distribution network and to controllably interrupt current through the DC power distribution line. A control system is structured to determine the location of a high impedance fault between two of the protective devices using one or more electrical characteristics sensed by the two protective devices to calculate the inductance and resistance of the portion of the DC power distribution line between one of the protective devices and the high impedance fault.
    Type: Grant
    Filed: December 31, 2015
    Date of Patent: October 17, 2017
    Assignee: ABB Schweiz AG
    Inventors: Li Qi, Xianyong Feng
  • Patent number: 9762047
    Abstract: Technologies for detecting a fault location in a DC electrical distribution system include a bus protection unit that monitors a DC electrical bus. The bus protection unit includes at least one sensor to produce sensor data indicative of one or more characteristics of the DC electrical bus monitored by the bus protection unit. The bus protection unit monitors the sensor data, determines whether a fault has occurred based on the sensor data, and determines whether the fault occurred within a bus zone defined by the DC electrical bus in response to determining that the fault has occurred. Further, the bus detection unit trips isolation devices within the bus zone in response to a determination that the fault occurred within the bus zone or a communication from another bus protection unit indicating the fault has occurred within the bus zone. The bus protection unit transmits a bus fault indication signal to another bus protection unit in response to a determination that the fault has occurred.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: September 12, 2017
    Inventors: Jiuping Pan, Li Qi, Xianyong Feng
  • Publication number: 20170250539
    Abstract: Unique systems, methods, techniques and apparatuses for cloud-based control for power distribution systems are disclosed. One exemplary embodiment is a system comprising a microprocessor-based power management system in operative communication with a plurality of buildings located remotely from the power management system and a plurality of communication interface devices provided at corresponding ones of the plurality of buildings. The power management system is structured to perform a plurality of building unit-specific optimizations, evaluate a net power demand on the electrical power grid, reduce the net power demand on the electrical power grid while minimizing disruption to the resident-defined preference parameters, and transmit to each of the plurality of interface devices the one or more additional control commands corresponding to the specific building at which each interface device is provided.
    Type: Application
    Filed: February 24, 2017
    Publication date: August 31, 2017
    Inventor: Xianyong Feng
  • Patent number: 9733623
    Abstract: A microgrid includes a plurality of distributed energy resources such as controllable distributed electric generators and electrical energy storage devices. A method of controlling operation of the microgrid includes periodically updating a distributed energy resource schedule for the microgrid that includes on/off status of the controllable distributed electric generators and charging/discharging status and rate of the electrical energy storage devices and which satisfies a first control objective for a defined time window, based at least in part on a renewable energy generation and load forecast for the microgrid. The method further includes periodically determining power set points for the controllable distributed energy resources which satisfy a second control objective for a present time interval within the defined time window, the second control objective being a function of at least the distributed energy resource schedule for the microgrid.
    Type: Grant
    Filed: July 31, 2013
    Date of Patent: August 15, 2017
    Assignee: ABB Research Ltd.
    Inventors: Fang Yang, Xianyong Feng, Alexandre Oudalov, Zhao Li, Zhenyuan Wang
  • Publication number: 20170192047
    Abstract: Unique systems, methods, techniques and apparatuses of fault location in DC power distribution systems are disclosed. One exemplary embodiment is a DC power distribution system comprising at least one DC power distribution network and at least two protective devices operatively coupled to the DC power distribution network. Each protective device is structured to sense one or more electrical characteristics associated with the DC power distribution network and to controllably interrupt current through the DC power distribution line. A control system is structured to determine the location of a high impedance fault between two of the protective devices using one or more electrical characteristics sensed by the two protective devices to calculate the inductance and resistance of the portion of the DC power distribution line between one of the protective devices and the high impedance fault.
    Type: Application
    Filed: December 31, 2015
    Publication date: July 6, 2017
    Inventors: Li Qi, Xianyong Feng
  • Publication number: 20160372911
    Abstract: Technologies for detecting a fault location in a DC electrical distribution system include a bus protection unit that monitors a DC electrical bus. The bus protection unit includes at least one sensor to produce sensor data indicative of one or more characteristics of the DC electrical bus monitored by the bus protection unit. The bus protection unit monitors the sensor data, determines whether a fault has occurred based on the sensor data, and determines whether the fault occurred within a bus zone defined by the DC electrical bus in response to determining that the fault has occurred. Further, the bus detection unit trips isolation devices within the bus zone in response to a determination that the fault occurred within the bus zone or a communication from another bus protection unit indicating the fault has occurred within the bus zone. The bus protection unit transmits a bus fault indication signal to another bus protection unit in response to a determination that the fault has occurred.
    Type: Application
    Filed: June 16, 2015
    Publication date: December 22, 2016
    Inventors: Jiuping Pan, Li Qi, Xianyong Feng
  • Publication number: 20160352091
    Abstract: Unique systems, methods, techniques and apparatuses of fault location in DC power distribution systems are disclosed. One exemplary embodiment is a DC power distribution system including a plurality of zones each including a DC power distribution line and a protective device. Each protective device structured to sense one or more electrical characteristics of a line and to controllably open a circuit including the line. At least one intelligent electronic device is structured to determine a line inductance based upon electrical characteristics sensed by one or more of the protective devices and to evaluate a location of the line fault based upon the determined line inductance.
    Type: Application
    Filed: May 29, 2015
    Publication date: December 1, 2016
    Inventors: Li Qi, Xianyong Feng, Jiuping Pan
  • Publication number: 20160252401
    Abstract: A real time thermal monitoring and prediction system (TMPS) is provided for use in monitoring and operating a transformer. The TMPS may be used to estimate a maximum loading level for the transformer over a future time period using a dynamic thermal model for the transformer and ambient temperature forecasts. The transformer may be loaded to its maximum loading level during power congestion or a service restoration process.
    Type: Application
    Filed: February 23, 2016
    Publication date: September 1, 2016
    Inventors: Xianyong Feng, Mirrasoul J. Mousavi
  • Publication number: 20160047765
    Abstract: The present invention comprises an apparatus and method for detecting a loss of oil from an oil-immersed transformer, based on fitting a transformer top-oil temperature model to online measurements in an iterative optimization process that yields fitted values for a first model parameter representing the top-oil temperature rise over ambient temperature and a second model parameter representing the oil time constant. Among the several advantages seen in the contemplated apparatus and method is the reduction in required instrumentation, whereby transformer oil leaks are indirectly detected without requiring pressure sensors or mechanical floats, although the presence of such sensors is not excluded by the teachings herein.
    Type: Application
    Filed: August 12, 2014
    Publication date: February 18, 2016
    Inventors: Xianyong Feng, Mirrasoul Mousavi
  • Publication number: 20150039145
    Abstract: A microgrid includes a plurality of distributed energy resources such as controllable distributed electric generators and electrical energy storage devices. A method of controlling operation of the microgrid includes periodically updating a distributed energy resource schedule for the microgrid that includes on/off status of the controllable distributed electric generators and charging/discharging status and rate of the electrical energy storage devices and which satisfies a first control objective for a defined time window, based at least in part on a renewable energy generation and load forecast for the microgrid. The method further includes periodically determining power set points for the controllable distributed energy resources which satisfy a second control objective for a present time interval within the defined time window, the second control objective being a function of at least the distributed energy resource schedule for the microgrid.
    Type: Application
    Filed: July 31, 2013
    Publication date: February 5, 2015
    Inventors: Fang Yang, Xianyong Feng, Alexandre Oudalov, Zhao Li, Zhenyuan Wang