Patents Assigned to State Grid Corporation of China
  • Publication number: 20220310288
    Abstract: A post insulator includes an insulating post including a first end and a second end that are opposite to each other, a high-voltage-end grading ring connected to the first end of the insulating post, the high-voltage-end grading ring being insulated from the insulating post, a grounding-end grading ring connected to the second end of the insulating post, the grounding-end grading ring being insulated from the insulating post, and a charge control ring disposed on an outer surface of the insulating post, the charge control ring being insulated from the insulating post, and the charge control ring being configured to accumulate surface charges.
    Type: Application
    Filed: October 14, 2020
    Publication date: September 29, 2022
    Applicants: STATE GRID CORPORATION OF CHINA, SINOMA ADVANCED MATERIALS CO., LTD., NORTH CHINA ELECTRIC POWER UNIVERSITY, SINOMA JIANGXI INSULATOR AND ELECTRICITY CO., LTD.
    Inventors: Licheng LU, Faqiang YAN, Bo QI, Zhiyi CHONG, Chengrong LI, Zhijun GUO, Xiao YANG, Yanxia DING
  • Patent number: 11416899
    Abstract: Disclosed is an estimation method for a whole life cycle cost of a power battery in echelon utilization. In this method, echelon utilization grades are established for the power battery according to an SOH of the power battery; a whole battery capacity model is constructed corresponding to the echelon utilization grades; a cost model is constructed corresponding to the echelon utilization grades; and a variation trend of the whole life cycle cost of the power battery is estimated according to the echelon utilization grades for the power battery, the power battery capacity model and the cost model, and a result of estimation is outputted.
    Type: Grant
    Filed: January 8, 2019
    Date of Patent: August 16, 2022
    Assignees: STATE GRID JIANGXI ELECTRIC POWER COMPANY LIMITED RESEARCH INSTITUTE, STATE GRID CORPORATION OF CHINA, NANCHANG KECHEN ELECTRIC POWER TEST AND RESEARCH CO., LTD, NANCHANG INSTITUTE OF TECHNOLOGY
    Inventors: Ping Liu, Wenhua Zhang, Rui Xu, Fayuan Wu, Yongqiang Deng, Xiaomin Dai, Jinhui Tang, Hongxia Xiao
  • Patent number: 11411406
    Abstract: The present disclosure relates to a method, an apparatus and a storage medium for controlling a combined heat and power system, belonging to the field of power system technologies. The method discloses: establishing a decision model, the decision model including an objective function aiming to minimize a total cost of the first generators and the second generators, and constraints with respect to the first generators, the second generators and the heating exchange stations; solving the decision model to acquire operation states of the first generators, operation states of the second generators, and operations states of the heating exchange stations; and controlling the combined heat and power system, based on the operation states of the first generators, the operation states of the second generators, and the operations states of the heating exchange stations.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: August 9, 2022
    Assignees: TSINGHUA UNIVERSITY, STATE GRID JILINSHENG ELECTRIC POWER SUPPLY COMPANY, STATE GRID CORPORATION OF CHINA
    Inventors: Wenchuan Wu, Bin Wang, Yong Sun, Hongbin Sun, Qinglai Guo, Chenhui Lin
  • Patent number: 11385273
    Abstract: Provided are a voltage measurement method and apparatus. The method includes following steps: a number j of height values are selected in a vertical direction of a transmission line, a number m of sensors used for measuring, according to a Stark effect, electric field strength of a corresponding spatial position are arranged in sequence at each of j spatial positions of the j heights from the ground, electric field strength values of the corresponding spatial position are measured through the m sensors respectively, and an electric field strength average value of the corresponding spatial position is calculated according to the acquired m electric field strength values, where j and m are positive integers, and the j spatial positions are below the transmission line; a voltage of the transmission line is calculated according to j electric field strength average values.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: July 12, 2022
    Assignees: STATE GRID CHONGQING ELECTRIC POWER CO. ELECTRIC POWER RESEARCH INSTITUTE, STATE GRID CORPORATION OF CHINA
    Inventors: Wenxin Peng, Xingzhe Hou, Ke Zheng, Xiaorui Hu, Songnong Li, Wenli Chen, Jun Ye, Full Yang, Xingzhi Liu
  • Patent number: 11374404
    Abstract: Disclosed is a low-voltage DC power distribution fast switching device. The device includes a positive output terminal electrically connected to a positive pole of a load, and no less than two switching circuits connected in parallel with each other; the switching circuit includes a positive input terminal electrically connected to a positive pole of common negative power supplies, a supplementary diode cluster composed of no less than one diode connected in series, and a thyristor connected between the positive input terminal and the positive output terminal; the positive input terminal is electrically connected to an anode of the supplementary diode cluster and an anode of the thyristor, and the positive output terminal is electrically connected to a cathode of the complementary diode cluster and a cathode of the thyristor.
    Type: Grant
    Filed: August 26, 2020
    Date of Patent: June 28, 2022
    Assignees: State Grid Jiangsu Electric Power Co., Ltd. Research Institute, State Grid Corporation of China, State Grid Jiangsu Electric Power Co., Ltd., Jiangsu Electric Power Research Institute Co., Ltd.
    Inventors: Yubo Yuan, Tiankui Sun, Jinggang Yang, Xiaodong Yuan, Lei Gao, Mingming Shi, Peng Li, Wei Su, Kun Yang, Xinyao Si, Jianhua Qin, Xin Fang, Xiaolong Xiao, Ruihuang Liu, Chenqing Wang, Jiahao Guo, Yunlong Jiang, Shuyi Zhuang, Qun Li, Jian Liu, Shu Chen
  • Patent number: 11360947
    Abstract: The present application relates to a method for evaluating an operation of a distribution network based on data capture and Spark. The method includes: acquiring a packet from a terminal, and mirroring the packet through a mirroring port of a switch to acquire a mirror packet of the packet; analyzing the mirror packet, acquiring a 101/104 protocol packet, and storing the 101/104 protocol packet into an HDFS; acquiring the 101/104 protocol packet from the HDFS, parsing the 101/104 protocol packet on a Spark platform to acquire a parameter in the 101/104 protocol packet, and analyzing and processing the parameter to obtain a key indicator for evaluating the operation of the distribution network; and displaying the key indicator through a web page.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: June 14, 2022
    Assignees: ELECTRIC POWER SCIENCE & RESEARCH INSTITUTE OF STATE GRID TIANJIN ELECTRIC POWER COMPANY, STATE GRID TIANJIN ELECTRIC POWER COMPANY, STATE GRID CORPORATION OF CHINA, NORTH CHINA ELECTRIC POWER UNIVERSITY
    Inventors: Pan Zhang, Menghan Wu, Ning Jiang, Xudong Wang, Guodong Li, Yi Ding, Yan Qi, Yanxin Shi, Xuejun Shang, Wei Fan, Ning Kang, Zhijun Zhang, Jie Zhang, Tao Li
  • Patent number: 11355922
    Abstract: Provided are a ground fault protection method and apparatus for a photovoltaic station output transmission line. A circuit breaker on a photovoltaic side is controlled by a control element. Whether measured zero sequence impedance on the photovoltaic side of a segment line has a large variation before and after an action of power grid side distance protection is determined, the variation of the measured zero sequence impedance is inputted into the control element, in condition that the variation of the measured zero sequence impedance is less than a setting value, a tripping signal is outputted to the circuit breaker on the photovoltaic side to isolate the fault; and in condition that the variation of the measured zero sequence impedance is greater than the setting value, photovoltaic side distance protection is not started.
    Type: Grant
    Filed: October 10, 2019
    Date of Patent: June 7, 2022
    Assignees: STATE GRID ZHEJIANG ELECTRIC POWER CO., LTD. TAIZHOU POWER SUPPLY COMPANY, STATE GRID CORPORATION OF CHINA, NORTH CHINA ELECTRIC POWER UNIVERSITY
    Inventors: Ping Zhao, Fengyuan Wang, Chi Zhang, Yuande Zheng, Yudong Fang, Hua Xu, Zaibing Zhou, Tao Zheng, Yifan Zhu, Chenjing Xu, Tao Zhu, Kang Wang, Zhen Huang, Guode Ying
  • Patent number: 11342753
    Abstract: The present disclosure provides a scheduling method for a power system based on flexible HVDC (high-voltage direct current) and a pumped storage power station, which belongs to a field of power system control technologies. The method is applicable in a power system having a flexible HVDC system and a pumped storage power station. By establishing a scheduling model for the power system, which contains an objective function and multiple constraints, and solving the scheduling model, a capability of the pumped storage power station is used to adjust the unstable output of the renewable energy power generator and stabilize fluctuant of the renewable energy power generation, such that a power incoming into a load center presents a stable ladder pattern and an optimal scheduling scheme can be obtained.
    Type: Grant
    Filed: September 23, 2020
    Date of Patent: May 24, 2022
    Assignees: TSINGHUA UNIVERSITY, STATE GRID JIBEI ELECTRIC POWER COMPANY, STATE GRID CORPORATION OF CHINA
    Inventors: Bin Wang, Yanling Du, Wenchuan Wu, Haitao Liu, Hongbin Sun, Weimin Sun, Zongda Mu, Chenhui Lin, Qinglai Guo
  • Patent number: 11327114
    Abstract: The fully-automatic closed-loop detection method includes: comparing a SCD file of a to-be-tested substation with a device-type data template file, so as to determine whether configuration information about the to-be-tested substation is correct; when the configuration information about the to-be-tested substation is correct, parsing the SCD file of the to-be-tested substation and generating a SSD topological diagram of the to-be-tested substation; and acquiring a testing item from a predetermined testing item library in accordance with the SSD topological diagram of the to-be-tested substation, generating a testing scheme for the to-be-tested substation, performing a testing operation and outputting a testing result.
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: May 10, 2022
    Assignees: STATE GRID HEBEI ELECTRIC POWER RESEARCH INSTITUTE, STATE GRID CORPORATION OF CHINA, WUHAN KEMOV ELECTRIC CO., LTD, STATE GRID HEBEI ENERGY TECHNOLOGY SERVICE CO., LT D
    Inventors: Peng Luo, Hui Fan, Jingchao Yang, Xiaoguang Hao, Yuhao Zhao, Lei He, Qun Rao
  • Patent number: 11326579
    Abstract: An adaptive dynamic planning control method and system for a large-scale energy storage station. The method comprises: setting a structure and control target parameters of an adaptive dynamic planning control system; initializing the parameters and importing an initial state of a controlled object; calculating an original wind electricity power fluctuation rate at a current moment t and smoothing the original wind electricity power according to a change rate control strategy; calculating a smoothed wind storage power fluctuation rate, a power of an energy storage system, and a state of charge (SOC) of the energy storage system; initializing and training an evaluation module and an execution module; calculating and saving a control strategy, a smoothed wind storage power fluctuation rate, an energy storage power and a (SOC) at each moment; and outputting the control strategy at each moment, the smoothed wind storage power fluctuation rate, the energy storage power and the (SOC).
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: May 10, 2022
    Assignees: China Electric Power Research Institute Company Limited, State Grid Corporation of China
    Inventors: Xiangjun Li, Yuting He, Jingqiong Zhang, Dong Hui, Xuecui Jia
  • Patent number: 11296547
    Abstract: Disclosed are a distribution transformer terminal and a method for monitoring a state of a distribution transformer court device. The distribution transformer terminal includes an ARM core processor, a carrier communication module connected to a court device, a sub-G wireless communication module connected to the court device and a GPS module connected to the court device. The ARM core processor is connected to the carrier communication module, the sub-G wireless communication module and the GPS module. The ARM core processor is configured to identify a phase of the court device and a court to which the court device belongs, acquire an operating state and fault information of the court device through the sub-G wireless communication module, and acquire geographical location information of the court device through the GPS module.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: April 5, 2022
    Assignees: ELECTRIC POWER SCIENCE & RESEARCH INSTITUTE OF STATE GRID TIANJIN ELECTRIC POWER, STATE GRID TIANJIN ELECTRIC POWER COMPANY, STATE GRID CORPORATION OF CHINA, SHANGAI WISCOM SUNEST ELECTRIC POWER TECHNOLOGY CO., LTD.
    Inventors: Yi Ding, Pan Zhang, Yu Zhang, Ping Tang, Ning Jiang, Yanjun Wen, Haibiao Wang, Xudong Wang, Qinghu Hu, Xianxu Huo, Chao Huang, Yan Qi, Wangxi Xue, Guodong Li, Ke Xu, Qiuliang Jiao
  • Patent number: 11289944
    Abstract: A distribution network risk identification system and method and a computer storage medium include: multi-source information data for risk identification is acquired; the multi-source information data is analyzed and processed to obtain a risk characteristic; a risk identification index is calculated on the basis of the risk characteristic, and a state of a power grid is determined according to the risk identification index; a temporal and spatial variation rule and variation trend of the risk characteristic are analyzed; a location and cause of occurrence of a risk are determined according to the temporal and spatial variation rule and variation trend of the risk characteristic; a severity of the risk is analyzed by adopting an analogue simulation manner; and the severity of the risk is assessed, and risk early warning information is issued on the basis of an assessment result.
    Type: Grant
    Filed: November 3, 2017
    Date of Patent: March 29, 2022
    Assignees: CHINA ELECTRIC POWER RESEARCH INSTITUTE COMPANY LIMITED, STATE GRID CORPORATION OF CHINA
    Inventors: Wanxing Sheng, Xiaohui Song, Yu Zhang, Jianfang Li, Fei Gao, Yajie Li, Shanshan Zhao
  • Patent number: 11233639
    Abstract: A method for quantum key fusion-based virtual power plant security communication includes: identity authentication, performing identity authentication between a client and a server in a virtual power plant based on a communication requirement to acquire a root key; key distribution: generating a key encryption key and a message authentication key based on the acquired root key and performing negotiation on a data encryption key to obtain the data encryption key; and data encryption: encrypting to-be-encrypted data using the data encryption key, and implementing communication of the data. During the identity authentication or the key distribution, negotiation on a quantum key is performed by a quantum key server, and the quantum key obtained by the negotiation is used for implementing the identity authentication or used as the data encryption key. A device for quantum key fusion-based virtual power plant security communication and a computer storage medium are provided.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: January 25, 2022
    Assignees: BEIJING GUODIAN TONG NETWORK TECHNOLOGY CO., LTD, NORTH CHINA ELECTRIC POWER UNIVERSITY, STATE GRID CORPORATION OF CHINA
    Inventors: Wei Deng, Wenzhao Wu, Zhuozhi Yu, Yefeng Zhang, Bingyang Han, Man Leng, Yonghong Ma, Jinglun Zhang, Runze Wu, Wenwei Chen, Nanxiang Li, Yukun Zhu
  • Patent number: 11233395
    Abstract: Disclosed are a dynamic lightning protection method and system. The method includes detecting lightning in real time and tracking a position of a thunderstorm; and performing dynamic lightning protection and control on an electrical grid according to an electrical grid control strategy before the thunderstorm reaches or affects the electrical grid. Further disclosed is a dynamic lightning protection system.
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: January 25, 2022
    Assignees: STATE GRID JIANGSU ELECTRIC POWER CO., LTD SUZHOU, STATE GRID JIANGSU ELECTRIC POWER CO., LTD, STATE GRID CORPORATION OF CHINA
    Inventors: Chong Tong, Yunfeng Cai, Ziyang Zhang, Qing Wang, Kang Dai, Wei Yin
  • Patent number: 11190007
    Abstract: Disclosed is a fault current controller for a direct current power grid, which includes a primary circuit and a controller. The primary circuit includes an inductor, a filter capacitor, a resistor, an IGBT switch, a diode, a contactor and a Hall current sensor. The inductor, a first resistor and a second contactor are connected in series and are connected to a first contactor in parallel. A first branch including a second resistor and a first diode, a second branch including a third resistor and a second diode, and the inductor are connected in parallel; the filter capacitor, the IGBT switch and the first resistor are connected in parallel. The Hall current sensor is arranged in the series circuit. The controller controls the IGBT switch and the two contactors in the primary circuit to form different on-off combinations.
    Type: Grant
    Filed: October 1, 2020
    Date of Patent: November 30, 2021
    Assignees: STATE GRID JIANGSU ELECTRIC POWER CO., LTD., STATE GRID JIANGSU ELECTRIC POWER CO., LTD. RESEARCH INSTITUTE, STATE GRID CORPORATION OF CHINA, JIANGSU ELECTRIC POWER RESEARCH INSTITUTE CO., LTD.
    Inventors: Chenyu Zhang, Yubo Yuan, Jinggang Yang, Shu Chen, Xiaodong Yuan, Jian Liu, Mingming Shi, Qun Li, Xuefeng Ge, Huiyu Miao, Ruihuang Liu, Yunlong Jiang
  • Patent number: 11184773
    Abstract: Disclosed in the embodiments of the present invention are a security auditing system and a method for same. The security auditing system comprises an eSIM module. The eSIM module is configured to: on the basis of pre-stored auditing rules, perform a security check on each received network connection request; if the security check is passed, determine said network connection request to be a legitimate request and allow the main control terminal that sent the network connection request to perform mobile network connection; and if the security check is not passed, determine the network connection request to be an illegitimate request and prohibit the main control terminal that sent the network connection request from performing mobile network connection.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: November 23, 2021
    Assignees: BEIJING SMARTCHiP MICROELECTRONICS TECHNOLOGY COMP, STATE GRID INFORMATION & TELECOMMUNICATION GROUP, STATE GRID CORPORATION OF CHINA
    Inventors: Yubo Wang, Xiaoke Tang, Zhongqiang Dun, Yi Hu, Jie Gan, Bingrong Cui, Song Cheng, Tianyu Yan
  • Patent number: 11178610
    Abstract: Systems and methods are disclosed for power management by estimating power contingency of a grid at a cloud control center; performing decentralized real-time measurement and making local decisions at one more computer controlled outlets connected to the grid; and aggregating distributed loads to provide emergency frequency support to the grid.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: November 16, 2021
    Assignees: STATE GRID CORPORATION OF CHINA, GLOBAL ENERGY INTERCONNECTION RESEARCH INSTITUTE NORTH AMERICA, STATE GRID JIANGSU ELECTRIC POWER COMPANY
    Inventors: Haifeng Li, Xiao Lu, Yingmeng Xiang, Chunlei Xu, Di Shi, Zhe Yu, Shiming Xu, Xueming Li, Jiangpeng Dai, Zhiwei Wang
  • Patent number: 11176028
    Abstract: A standard conformance testing system and method for a CIM/E model of a power system and a storage medium include: converting the standards “Power Grid Common Model Description Specification (GB/T 30149)” and “Power Grid Operating Model Data Exchange Specification (DL/T 1380)” into practically operable testing rules, and performing automatic generation and verification of a CIM/E standard model and defect model. The testing system and method can improve the comprehensiveness and standardization of a CIM/E model standard compliance test, improving testing efficiency, promoting the level of standardization according to the CIM/E model in a power system software development process, and real time data exchange and interoperation between respective application systems, effectively supporting the safe and stable operation of a power grid.
    Type: Grant
    Filed: July 4, 2016
    Date of Patent: November 16, 2021
    Assignees: CHINA ELECTRIC POWER RESEARCH INSTITUTE COMPANY LIMITED, STATE GRID CORPORATION OF CHINA
    Inventors: Linpeng Zhang, Yujia Li, Qingbo Yang, Lixin Li, Fangchun Di, Yunhao Huang, Dapeng Li, Lei Tao, Yangchun Hao, Zhenyu Chen
  • Publication number: 20210344190
    Abstract: Provided is a determination method of differential protection suitable for an electricity transmission line with multi-terminal T-connection.
    Type: Application
    Filed: December 27, 2018
    Publication date: November 4, 2021
    Applicants: TAIZHOU POWER SUPPLY COMPANY OF STATE GRID ZHEJIANG ELECTRIC POWER, STATE GRID CORPORATION OF CHINA
    Inventors: Ping Zhao, Chi Zhang, Yiping Shen, Yutao Qiu, Hua Xu, Xiaochun Xu, Hao Li, Yuande Zheng, Zaibing zhou, Zhen Huang, Kang Wang, Jian Wu, Tao Zhu, Hao Tan, Ben Li, Qingchun Zhao, Xiaotong Zhu, Chen Zhou, Guode Ying, Zheng Qin, Xu Jiang
  • Publication number: 20210334860
    Abstract: Disclosed is an estimation method for a whole life cycle cost of a power battery in echelon utilization. In this method, echelon utilization grades are established for the power battery according to an SOH of the power battery; a whole battery capacity model is constructed corresponding to the echelon utilization grades; a cost model is constructed corresponding to the echelon utilization grades; and a variation trend of the whole life cycle cost of the power battery is estimated according to the echelon utilization grades for the power battery, the power battery capacity model and the cost model, and a result of estimation is outputted.
    Type: Application
    Filed: January 8, 2019
    Publication date: October 28, 2021
    Applicants: STATE GRID JIANGXI ELECTRIC POWER COMPANY LIMITED RESEARCH INSTITUTE, STATE GRID CORPORATION OF CHINA, NANCHANG KECHEN ELECTRIC POWER TEST AND RESEARCH CO., LTD, NANCHANG INSTITUTE OF TECHNOLOGY
    Inventors: Ping LIU, Wenhua ZHANG, Rui XU, Fayuan WU, Yongqiang DENG, Xiaomin DAI, Jinhui TANG, Hongxia XIAO