Patents Assigned to Electric Power Research Institute
  • Publication number: 20210205643
    Abstract: Provided are a fire extinguishing method and a fire extinguishing system for a lithium ion battery, an electronic device and a storage medium. The method includes: real-timely collecting environmental parameter values in a battery box where a lithium ion batteries are placed; determining a safety level of the lithium ion battery according to the environmental parameter values and a preset threshold of each environmental parameter, and sending a fire extinguishing command to a fire extinguishing device according to a preset fire extinguishing control program, where the fire extinguishing control program is a fire extinguishing strategy corresponding to the safety level of the lithium ion battery; and enabling the fire extinguishing device to execute a fire extinguishing operation according to the fire extinguishing command.
    Type: Application
    Filed: July 16, 2019
    Publication date: July 8, 2021
    Applicants: CHINA ELECTRIC POWER RESEARCH INSTITUTE COMPANY LIMITED, STATE GRID CORPORATION OF CHINA
    Inventors: Kai Yang, Fei Gao, Kangkang Wang, Chaoqun Liu, Mingjie Zhang, Hao Liu, Guangqing Jia, Mengmeng Geng, Kaifeng Wang
  • Patent number: 11053345
    Abstract: The present invention relates to the technical field of polymer materials, and in particular, relates to a polyurethane polymer and a method for preparing the same and use thereof. The present invention discloses use of aminoimidazolinone-based compound in preparing an end-capped polyurethane polymer product, by which the polyurethane polymer capable of achieving repeated self-healing for multiple times without adding any self-healing agent and any external stimulation can be prepared. The present invention further provides a polyurethane polymer capable of achieving repeated self-healing for multiple times without any external stimulation and having a compressive strength restored to at most 96% of the one before compression, and a method for preparing the same.
    Type: Grant
    Filed: December 27, 2017
    Date of Patent: July 6, 2021
    Assignee: ELECTRIC POWER RESEARCH INSTITUTE OF GUANGDONG POWER GRID CO., LTD.
    Inventors: Musong Lin, Tiansheng Chen, Qiang Fu, Shengping Fan, Lei Peng
  • Patent number: 11043808
    Abstract: A method for identifying a pattern of a load cycle includes: performing statistics on a daily load of a system based on smart meter data; generating a curve of the daily load of the system according to the statistics on the daily load of the system; acquiring a result of clustering curves of loads of typical days by applying shape-based time sequence clustering analysis using the curve of the daily load of the system; and identifying a pattern of a load cycle according to the result of clustering the curves of the loads of the typical days.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: June 22, 2021
    Assignees: CHINA ELECTRIC POWER RESEARCH INSTITUTE CO. LTD., STATE GRID CORPORATION OF CHINA, STATE GRID FUJIAN ELECTRIC POWER RESEARCH INST., GLOBAL ENERGY INTERCONNECTION RES. INST. CO. LTD.
    Inventors: Zhenyu Chen, Dapeng Li, Yunhao Huang, Fangchun Di, Lixin Li, Guangyi Liu, Wendong Zhu, Yangchun Hao, Yi Zhang, Jinxiang Chen
  • Patent number: 11022583
    Abstract: The invention comprises methods for fabricating and using a plurality of sensors on a substrate surface, such as ultrasonic sensor probes. The methods for fabricating sensors directly on the substrate surface includes the use of a template to dispose sensor material in an array and form a first layer on the substrate surface and a second template to dispose sensor electrode material in a corresponding array to form a second layer on top of the first layer. The invention provides a sensor housing that electrically connects the sensors and a computing device. The sensor housing may comprise a flexible circuit having a plurality of sensor electrode contact points corresponding to each of the sensors, at least one spring plate, a force distribution plate, and a plurality of cable wires attached to the flexible circuit and corresponding to each of sensor electrode contact points.
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: June 1, 2021
    Assignee: Electric Power Research Institute, Inc.
    Inventor: Luke Justin Breon
  • Patent number: 10994361
    Abstract: A weld with a stepped configuration is provided. The stepped configuration may be machined from a substrate to form a weld preparation which may accommodate a stepped weld. The weld with a stepped configuration and a controlled procedure exhibits improved service life and improved damage tolerance. A welded joint with a stepped configuration, a joined component with a stepped configuration, and method of welding a stepped configuration are also provided.
    Type: Grant
    Filed: January 26, 2015
    Date of Patent: May 4, 2021
    Assignee: Electric Power Research Institute, Inc.
    Inventors: John Albert Siefert, Jonathan David Parker
  • Patent number: 10991479
    Abstract: A cable for transmitting electricity may include a core including a first conductive material, a core shield surrounding the core, an insulation layer surrounding the core shield, the insulation layer comprising a material providing electrical insulating properties, an insulation shield surrounding the insulation layer; and at least one of the following at least partially surrounding the insulation shield: (a) a bedding layer including a first semi-conductive material, (b) a tape layer including a metallic tape intercalated with an insulating tape, and (c) a protection layer.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: April 27, 2021
    Assignee: Electric Power Research Institute, Inc.
    Inventors: Tiebin Zhao, Jay A. Williams, Richard W. Allen, Jr., Frank Frentzas, Ronald J. Knapwurst, Mohammad Anwar Pasha, Mark Rogers Smith
  • Patent number: 10985547
    Abstract: A current differential protection method for a self-adaptive half-wavelength line based on a time-difference method. Since an electrical distance of half-wavelength power transmission is long, after a fault occurs, there is an obvious time difference between the actuation times for protecting starting elements at two sides of a line. According to the principles of wave propagation, the position of a fault point can be determined by means of a difference between the actuation times for protecting the starting elements at the two sides of the line. By means of taking the fault point as a differential point, a current value at the differential point can be obtained according to a long line equation by means of the voltage and current at protection-mounted positions at the two sides of the line, and a differential current is then calculated.
    Type: Grant
    Filed: July 11, 2016
    Date of Patent: April 20, 2021
    Assignees: CHINA ELECTRIC POWER RESEARCH INSTITUTE COMPANY LIMITED, STATE GRID CORPORATION OF CHINA, CENTRAL CHINA BRANCH OF STATE GRID CORPORATION OF CHINA
    Inventors: Xuming Liang, Yarong Guo, Huanzhang Liu, Xiao Li, Zexin Zhou, Dingxiang Du, Delin Wang, Jing Li, Huixin Li, Zhongqing Li
  • Publication number: 20210055339
    Abstract: Provided are an insulation diagnosis and defect positioning method, apparatus and device for an insulated bus pipe, and a storage medium.
    Type: Application
    Filed: January 6, 2020
    Publication date: February 25, 2021
    Applicants: STATE GRID HUBEI ELECTRIC POWER RESEARCH INSTITUTE, STATE GRID CORPORATION OF CHINA
    Inventors: Wenpei Li, Ling Ruan, Rui Liu
  • Patent number: 10922452
    Abstract: A digital simulation system of a power distribution network, comprising: a client and a server end. The server end is a simulation server cluster composed of several simulation servers; the simulation server cluster and the client are mutually connected through a communication bus, wherein the client is configured to use a DCOM component to invoke a simulation service provided by the server end, and the server end is configured to distribute a task to be processed to each cluster node. Constructing the above-mentioned digital simulation system facilitates an optimal planning and operation of a smart power distribution network, thereby improving the utilization efficiency and reliability of the smart power distribution network and reducing the loss of a power outage.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: February 16, 2021
    Assignees: CHINA ELECTRIC POWER RESEARCH INSTITUTE COMPANY LIMITED, STATE GRID CORPORATION OF CHINA
    Inventors: Keyan Liu, Wanxing Sheng, Yinglong Diao, Jiangang Tang, Xueshun Ye, Kaiyuan He, Dongli Jia, Lijuan Hu
  • Patent number: 10900940
    Abstract: A backfilling-type online chromatographic detector for sulphur hexafluoride decomposition products includes: a compression pump, a vacuum pump, a gas storage tank, a first six-way valve, a second six-way valve, a first chromatographic column, a second chromatographic column and a detector. One end of the compression pump is connected to one end of the vacuum pump, another end of the vacuum pump is connected to one end of the gas storage tank, another end of the gas storage tank is connected to the first chromatographic column through the first six-way valve, the first chromatographic column is connected to the second chromatographic column through the second six-way valve, and the second chromatographic column is connected to the detector.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: January 26, 2021
    Assignee: ELECTRIC POWER RESEARCH INSTITUTE OF GUANGDONG POWER GIRD CO., LTD.
    Inventors: Yongyan Zhou, Li Li, Xiaopeng Fan, Nian Tang, Chengji Huang, Xiaodian Li, Jiawen Liu, Peiqi Wu
  • Patent number: 10832179
    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.
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: November 10, 2020
    Assignees: CHINA ELECTRIC POWER RESEARCH INSTITUTE CO. LTD., STATE GRID CORPORATION OF CHINA, STATE GRID SICHUAN ELECTRIC POWER COMPANY
    Inventors: Guodong Huang, Qiang Ding, Zelei Zhu, Sai Dai, Hui Cui, Dan Xu, Zhi Cai, Bo Li, Chenxu Hu, Chuancheng Zhang, Jinghua Yan, Deyue Men, Jiali Zhang, Peijun Li, Zhen Sun
  • Patent number: 10833508
    Abstract: An active power distribution network multi-time scale coordinated optimization scheduling method and storage medium are provided. The method includes the following steps: performing long-time scale optimization scheduling of an active power distribution network; performing short-time scale rolling optimization scheduling on the basis of MPC of the active power distribution network according to an optimization result of the long-time scale optimization scheduling of the active power distribution network. By using a model prediction control method, taking the long-time scale optimization scheduling result as a reference, and performing short-time scale rolling correction, the optimization scheduling of the active power distribution network is achieved, thereby reducing unfavorable influences of prediction precision of a distributed power supply and a low-voltage load on the optimization scheduling.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: November 10, 2020
    Assignees: CHINA ELECTRIC POWER RESEARCH INSTITUTE COMPANY LIMITED, STATE GRID CORPORATION OF CHINA, NORTH CHINA ELECTRIC POWER UNIVERSITY, STATE GRID BEIJING ELECTRIC POWER COMPANY, STATE GRID TIANJIN ELECTRIC POWER COMPANY
    Inventors: Xiaohui Wang, Tianjiao Pu, Lei Dong, Naishi Chen, Ye Li, Jiancheng Yu, Renle Huang, Xianjun Ge, Zhihong Li, Minghao Ai, Fumin Qu, Liqiang Zhao
  • Patent number: 10826292
    Abstract: An embodiment provides a multi-time-scale Digital/Analog (D/A) hybrid simulation system and simulation method therefor for a complex power distribution network and a computer storage medium, and is intended to solve existing problems about multi-time-scale modeling and simulation of the complex power distribution network and simulation accuracy and efficiency of the complex power distribution network.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: November 3, 2020
    Assignees: CHINA ELECTRIC POWER RESEARCH INSTITUTE CO. LTD., STATE GRID CORPORATION OF CHINA
    Inventors: Wanxing Sheng, Keyan Liu, Xiaoli Meng, Weijie Dong, Yajie Li, Xueshun Ye, Yongmei Liu, Yinglong Diao, Dongli Jia, Lijuan Hu, Kaiyuan He
  • Patent number: 10825112
    Abstract: A method of predicting the operation reliability of a distribution network, the method being based on an ARIMA model. By establishing an ARIMA model predict a user monthly power outage count; convert a non-smooth element outage count time series to a smooth time series; perform regression on only lagged values of a dependent variable, and on current values and lagged values of a stochastic error term, so as to establish a user monthly power outage count model; according to a prediction result sample an outage point, and at the same time, taking into account a real time load operating state, establish a failure mode effects table based on TLOC criteria and PLOC criteria; and calculate a system recovery time for each instance of device outage, and finally obtain a whole-year reliability index.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: November 3, 2020
    Assignee: CHINA ELECTRIC POWER RESEARCH INSTITUTE COMPANY LIMITED
    Inventors: Wanxing Sheng, Yinglong Diao, Keyan Liu, Xiaoli Meng, Lijuan Hu, Kaiyuan He, Dongli Jia, Xueshun Ye, Weijie Dong, Jiangang Tang
  • Patent number: 10826295
    Abstract: A method and an apparatus for determining the distributed power supply capacity to be accessed by a feed line of a power distribution network, and a storage medium, the method comprising: determining feed line loss on the basis of load information of power distribution network feed line access nodes and circuit parameters; on the basis of the feed line loss, determining three-phase voltage change values of the feed line circuit; using a single phase having the greatest voltage change amongst the voltage change values, determining a maximum active power for distributed power supply access under voltage constraints; comparing the current of the feed line corresponding to the maximum active power with a circuit current limit, and determining the distributed power supply capacity to be accessed by the feed line; the apparatus comprises a feed line information collection unit, a voltage drop unit, a quantitative calculation unit, and a results analysis unit.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: November 3, 2020
    Assignees: CHINA ELECTRIC POWER RESEARCH INSTITUTE CO. LTD., STATE GRID CORPORATION OF CHINA
    Inventors: Shixiong Fan, Ting Yu, Tianjiao Pu, Lixin Li, Yijun Yu, Zechen Wei, Xingwei Liu, Wei Han, Wei Wang, Chen Li, Shiguang Li, Xinjing Wu, Jiatong Du, Kun Wu
  • Patent number: 10816950
    Abstract: A Demand Response (DR) physical potential evaluation method for a feeder line is provided, which includes that: a load curve of a part to be identified in a load curve of a feeder line to be evaluated is acquired; a load database is created on the basis of a historical load curve of loads of predefined types; load types and total number of the loads to be identified are determined on the basis of the load curve of the part to be identified and the load database; a physical potential of the loads of each of the types is acquired according to the load types of the loads to be identified; and an overall aggregated physical potential of the loads to be identified is obtained according to the physical potential of the loads of each of the types and a number of the loads of each of the types.
    Type: Grant
    Filed: June 13, 2017
    Date of Patent: October 27, 2020
    Assignees: CHINA ELECTRIC POWER RESEARCH INSTITUTE COMPANY LIMITED, STATE GRID CORPORATION OF CHINA, STATE GRID SHANDONG ELECTRIC POWER RESEARCH INSTITUTE
    Inventors: Ke Wang, Taiyou Yong, Jianguo Yao, Shengchun Yang, Yijun Yu, Yaping Li, Shuhai Feng, Jiantao Liu, Dan Zeng, Jing Zhou, Xiaorui Guo, Wenbo Mao, Gang Wang
  • Publication number: 20200332053
    Abstract: The present invention relates to the technical field of polymer materials, and in particular, relates to a polyurethane polymer and a method for preparing the same and use thereof. The present invention discloses use of aminoimidazolinone-based compound in preparing an end-capped polyurethane polymer product, by which the polyurethane polymer capable of achieving repeated self-healing for multiple times without adding any self-healing agent and any external stimulation can be prepared. The present invention further provides a polyurethane polymer capable of achieving repeated self-healing for multiple times without any external stimulation and having a compressive strength restored to at most 96% of the one before compression, and a method for preparing the same.
    Type: Application
    Filed: December 27, 2017
    Publication date: October 22, 2020
    Applicant: ELECTRIC POWER RESEARCH INSTITUTE OF GUANGDONG POWER GRID CO., LTD.
    Inventors: Musong LIN, Tiansheng CHEN, Qiang FU, Shengping FAN, Lei PENG
  • Patent number: 10811151
    Abstract: A method of inspecting a structure for cracks is disclosed. The method includes the steps of moving an inspection vehicle along a pre-determined path through an area to be inspected, the inspection vehicle having a camera apparatus configured to scan the area to be inspected; using the camera apparatus to scan the area to be inspected at a pre-determined distance per second, thereby capturing scan data for analysis; and analyzing the scan data to classify cracks in the structure.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: October 20, 2020
    Assignee: ELECTRIC POWER RESEARCH INSTITUTE, INC.
    Inventor: Thomas Waite
  • Patent number: 10787092
    Abstract: A method for charging an electric vehicle is provided. The method includes that a mobile charging apparatus transmits its own status information to a centralized battery distribution station; the centralized battery distribution station determines, according to the received status information, whether power of a battery of the mobile charging apparatus is less than a first threshold; if the power of the battery of the mobile charging apparatus is less than the first threshold, the battery of the mobile charging apparatus is processed so that the power of the battery of the mobile charging apparatus is greater than a second threshold, wherein the second threshold is greater than the first threshold; and if the power of the battery of the mobile charging apparatus is not less than the first threshold, the mobile charging apparatus charges the electric vehicle.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: September 29, 2020
    Assignees: STATE GRID CHONGQING ELECTRIC POWER CO. ELECTRIC POWER RESEARCH INSTITUTE, STATE GRID CHONGQING ELECTRIC POWER COMPANY, STATE GRID CORPORATION OF CHINA
    Inventors: Xingzhe Hou, Yi Long, Liankai Chen, Guojun He, Zhi Li, Yongxiang Liu, Hongliang Sun, Bin Zhu, Jing Zhang, Huicai Wang, Tingting Xu, Li Zhou, Lin Gong, Xiaorui Hu
  • Patent number: 10738003
    Abstract: Provided are a process and a device for preparing environmentally-friendly insulating gas perfluoroalkylnitrile. The device comprises a first tank reactor, a second tank reactor, and a fixed bed reactor. A condensing and collecting device is provided at the top of the first tank reactor, a collecting and guiding channel at the bottom of the condensing and collecting device is connected to an inlet of a storage tank, and an outlet of the storage tank is connected to an inlet of the second tank reactor. The second tank reactor is connected to a perfluoroolefin tank. An outlet of the second tank reactor is connected to a storage gasification tank. The storage gasification tank is connected to a carrier gas tank, and an outlet of the storage gasification tank is connected to an inlet of the fixed bed reactor. The present invention starts from cyanuric chloride and perfluoropropylene, and uses two tank reactors and a fixed bed reactor to realize production with high atom economy.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: August 11, 2020
    Assignees: STATE GRID CORPORATION OF CHINA, STATE GRID SHAANXI ELECTRIC POWER RESEARCH INSTITUTE, CENTRAL SOUTH UNIVERSITY, STATE GRID (XI'AN) ENVIRONMENTAL PROTECTION TECHNIQUE CENTER CO. LTD
    Inventors: Qiang Sun, Jian Wu, Yin Chen, De Ding, Genzhou Zhang, Xiaochun Bai, Anxiang Guo, Yantao Zhang, Pinghai Lv, Xiaobing Yu