Patents Assigned to State Grid Corporation of China
  • Patent number: 11909182
    Abstract: Provided are an overhead line detection method and system based on a cable inspection robot. The cable inspection robot is suspended on the overhead line. An imaging unit and a laser emission unit are disposed at the front end of the cable inspection robot. The imaging unit is at a first angle to the overhead line. The laser emission unit is at a second angle to the overhead line.
    Type: Grant
    Filed: November 28, 2022
    Date of Patent: February 20, 2024
    Assignees: State Grid Jiangsu Electric Power Co., Ltd., Changzhou Branch, State Grid Jiangsu Electric Power Co., Ltd., Innovation Center, State Grid Jiangsu Electric Power Co., Ltd., State Grid Corporation of China
    Inventors: Jiazhen Duan, Zheng Lu, Hongtao Liu, Ruxin Shi, Wei Zhang, Yuqin Shu, Zhiwei Kan, Yannan Chen, Xiaoqiang Chen, Xianming Ren
  • Patent number: 11900031
    Abstract: Systems and methods for generating a load model having composite load components for electric power systems are disclosed which include acquiring state information at a bus of the electric power system, acquiring a training event record, and generating the load model by sequentially executing steps of determining a final load component composition for a predetermined composite load model structure referencing to both the state information and the training event record, and determining a plurality of final load parameters corresponding to the final load component composition and the predetermined load model structure also referencing to both the state information and the training event record.
    Type: Grant
    Filed: August 14, 2020
    Date of Patent: February 13, 2024
    Assignees: State Grid Smart Research Institute Co., Ltd., State Grid Corporation of China Co., Ltd, State Grid Jiangsu Electric Power Co., Ltd., State Grid Shandong Electric Power Company, State Grid Jiangsu Electric Power Co., Ltd., Information and Communication Branch
    Inventors: Yishen Wang, Xinan Wang, Haifeng Li, Chunlei Xu, Di Shi, You Lin, Siqi Wang, Zhiwei Wang, Jing Cao, Bo Guo, Zhengyang Ding
  • Patent number: 11878341
    Abstract: A method for preparing an aluminum carbon composite by using a foam aluminum includes the following steps. Electromagnetic stirring and drying are performed on the foam aluminum and a carbon material to obtain a foam aluminum preform; an aluminum block is melted into aluminum liquid, the aluminum liquid is adjusted to qualified aluminum liquid, the qualified aluminum liquid is cooled to a temperature of 620˜650° C. and keeping the temperature to make the qualified liquid aluminum become a semi-solid state, then the foam aluminum preform is pressed into the qualified liquid aluminum and performing electromagnetic stirring. A mold is heated to a certain temperature and extrusion molding is performed to obtain a carbon reinforced aluminum matrix composite material. The method overcomes a problem that the carbon material and the aluminum matrix have poor wettability and are not easy to be added into the aluminum matrix.
    Type: Grant
    Filed: May 6, 2023
    Date of Patent: January 23, 2024
    Assignees: Wuhan Research Institute of Materials Protection, Material Laboratory of State Grid Corporation of China (Shandong)
    Inventors: Haitao Duan, Yinhua Li, Jiesong Tu, Xiaoming Wang, Lijun Zong, Dan Jia, Shengpeng Zhan, Tian Yang
  • Patent number: 11867616
    Abstract: Disclosed is an optical detection system for detecting a decomposition product of a high-voltage device, including: a measurement gas chamber and a measurement host. The measurement gas chamber is disposed on the high-voltage device and is in communication with a gas chamber of the high-voltage device, a collimator and a reflector are disposed on two sides of the measurement gas chamber respectively, and the measurement host is connected to the collimator. The collimator is used for emitting measurement laser to the measurement gas chamber according to a laser signal sent by the measurement host, and receiving reflected laser from the reflector and transmitting the reflected laser to the measurement host. In the present invention, data collection and backhaul between a measurement host and a measurement gas chamber are implemented through a laser signal, thus avoiding electromagnetic interference and improving the safety of measurement for a high-voltage device.
    Type: Grant
    Filed: October 29, 2020
    Date of Patent: January 9, 2024
    Assignees: State Grid Chongqing Electric Power Co. Electric Power Research Institute, State Grid Corporation of China
    Inventors: Qiang Yao, Shiling Zhang, Yulong Miao, Yongtao Chen, Xintian Li
  • Patent number: 11841387
    Abstract: A system for load identification in collaboration with a cloud end includes: a smart Internet of Things electricity meter module, used for matching extracted feature quantity data with a first load feature library of the smart Internet of Things electricity meter module, and determining load feature data corresponding to unmatched feature quantity data in the feature quantity data as target load feature data; a use information front-end/acquisition module, used for calling the target load feature data and transmitting the target load feature data to a main station load identification module; and a main station load identification module, used for receiving the target load feature data, performing data direction processing on the target load feature data, determining an optimal matching strategy matching the feature data to be identified, and identifying an optimal matching solution corresponding to the feature quantity data to be identified in a second load feature library.
    Type: Grant
    Filed: January 29, 2022
    Date of Patent: December 12, 2023
    Assignees: CHINA ELECTRIC POWER RESEARCH INSTITUTE, STATE GRID CORPORATION OF CHINA
    Inventors: Xingqi Liu, Enguo Zhu, Heping Zou, Fantao Lin, Min Lei, Yinghui Xu, Hao Chen, Zhongxing Wu, Yupeng Zhang, Zixu Zhu, Yue Han
  • Patent number: 11837871
    Abstract: A method for dispatching a power grid is disclosed. The method includes: obtaining a whole power generation interval scheduled for a cluster of renewable energy stations from a power grid dispatching center; establishing a decomposition model that includes an objection function and constraint conditions; decomposing the whole power generation interval with the decomposition model to obtain each power generation interval of each renewable energy station; and controlling each renewable energy station to generate powers based on each power generation interval. The objection function minimizes a total operating cost in the power grid and includes a renewable energy randomness indicating an actual power generation amount of each renewable energy station.
    Type: Grant
    Filed: July 12, 2021
    Date of Patent: December 5, 2023
    Assignees: TSINGHUA UNIVERSITY, STATE GRID CORPORATION OF CHINA
    Inventors: Wenchuan Wu, Yue Yang, Bin Wang, Mingjie Li
  • Patent number: 11821929
    Abstract: A quasi-real-time data collection system for a competitive power market includes a distributed data collection unit, a centralized data collection unit, and a main collection station, where the distributed data collection unit is connected to an intelligent watt-hour meter by using an internal downlink communication module of the distributed data collection unit, and configures data item collection parameters and task execution parameters by using an internal collection task and scheme configuration module of the distributed data collection unit; the centralized data collection unit is connected to the main collection station by using an internal file conversion and uplink communication module of the centralized data collection unit; and the centralized data collection unit is connected to multiple distributed data collection units by using a local high speed power line carrier communication (HPLC) network.
    Type: Grant
    Filed: September 14, 2021
    Date of Patent: November 21, 2023
    Assignees: State Grid Jiangsu Electric Power Co., Ltd. Marketing Service Center, State Grid Jiangsu Electric Power Co., Ltd., State Grid Corporation of China
    Inventors: Chao Zhou, Shuangshuang Zhao, Meimei Duan, Xiao Chen, Qing Xu, Dan Gong, Zhengqi Tian, Guofang Xia, Zengkai Ouyang, Xiaoxing Mu, Xiaodong Cao
  • Patent number: 11824361
    Abstract: A control method and system for a distribution network with distributed mobile energy storage systems is disclosed which relates to the power field. The present invention manages the multiple distributed mobile energy storage systems in the distribution network in a unified way, to improve the flexibility of the distribution network, and enable the distributed mobile energy storage systems to fully smooth new energy generation fluctuations, implement peak cut, facilitate grid auxiliary services, and improve the power quality. The control method includes: acquiring, by a sub-station coordination system, data of the distributed mobile energy storage systems; receiving, by a master-station dispatching system, the data of the distributed mobile energy storage systems, and obtaining external data; generating, by the master-station dispatching system, a control instruction; and controlling, by the sub-station coordination system, the distributed mobile energy storage systems.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: November 21, 2023
    Assignees: Electric Power Science & Research Institute of State Grid Tianjin Electric Power Company, State Grid Tianjin Electric Power Company, State Grid Corporation of China
    Inventors: Shiqian Ma, Yi Ding, Xuejun Shang, Guodong Li, Xianxu Huo, Tianchun Xiang, Xudong Wang, Tianhao Wang, Lei Wu
  • Patent number: 11815565
    Abstract: The present disclosure provides a system for perceiving an operating state of a large power transformer based on vibro-acoustic integration, including a perception layer, a network layer, and a diagnostic layer, where the perception layer is used for monitoring, in real time, a state parameter for a coupling vibration signal and an acoustic signal of each of a transformer core, a winding, a clamp and a housing, a state parameter of each of a vibration signal and an acoustic signal during a gear position change of an on-load tap changer (OLTC), and preliminarily diagnosing and analyzing monitored data. The system can monitor the operating state of the OLTC online for a long time, flexibly configure the sensor channel and the sensor type according to different application requirements, automatically acquire and identify the gear position change, and correctly identify and process a gear position corresponding to the monitoring signal.
    Type: Grant
    Filed: October 8, 2021
    Date of Patent: November 14, 2023
    Assignees: STATE GRID XINJIANG CO., LTD. ELECTRIC POWER RESEARCH INSTITUTE, Nanjing Unitech Electric Power Co., Ltd., State Grid Corporation of China
    Inventors: Yi You, Ling Zhang, Kaike Wang, Cheng He, Puzhi Zhao, Ronggang Gao, Jianping Zhao, Xinxin Wang, Xianfu Liu
  • Patent number: 11791068
    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: Grant
    Filed: October 14, 2020
    Date of Patent: October 17, 2023
    Assignees: 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
  • Publication number: 20230328918
    Abstract: A high-voltage bushing, comprising a conductive rod and an air cooling device. The conductive rod is internally provided with an air duct, and the air duct comprises an air inlet and an air outlet. The air cooling device comprises at least one fan, and the fan is configured to output airflow so as to blow the airflow into the air duct through the air inlet.
    Type: Application
    Filed: April 28, 2022
    Publication date: October 12, 2023
    Applicants: State Grid Corporation of China, State Grid Smart Grid Research Institute Co., LTD.
    Inventors: Shan LIU, Zehong LIU, Shaowu WANG, Xianshan GUO, Yong HUANG, Jin ZHANG, Shengli SONG, Jinzhong LI, Licheng LU, Yunpeng LI, Jianhui ZHOU, Hang WANG, Zhe JIANG, Junyi HOU
  • Patent number: 11777313
    Abstract: The present invention discloses a unit commitment method considering security region of wind turbine generators with frequency response control, and the main steps are: 1) determining security region of wind turbine generators when provides frequency response; 2) based on the security region of the wind turbine generators when provides frequency response, establishing a unit commitment model considering security region of wind turbine generators; and 3) calculating the unit commitment model considering the security region of the wind turbine generators by using mixed-integer linear programming method, and obtaining the operation result of the unit commitment considering the security region of the wind turbine generators with frequency response control. The present invention can be widely used in the setting of frequency response parameters of wind turbine generators dispatched in the prior art and the start-stop and output plans of synchronous generator.
    Type: Grant
    Filed: July 14, 2020
    Date of Patent: October 3, 2023
    Assignees: State Grid Qinghai Electric Power Research Institute, Chongqing University, State Grid Qinghai Electric Power Company, State Grid Corporation of China
    Inventors: Yue Fan, Senlin Yang, Juan Yu, Xiaoku Yang, Ling Dong, Jun Kang, Maochun Wang, Yongqiang Han, Zhifang Yang, Rui Song, Xuebin Wang, Juelin Liu, Haiting Wang, Xiaokan Gou, Guobin Fu, Chunmeng Chen, Pengsheng Xie, Yanhe Li, Shichang Zhao, Xuan Wang, Ying Liang, Jun Yang, Shujie Zhang, Ming Xiao, Jiatian Gan, Guoqiang Lu, Yujie Ding, Dongning Zhao, Jia Yang, Ke Liu, Shaofei Wang, Yongfei Ma, Jie Zhang, Aizhen Zhu, Kaixuan Yang, Shuxian Yuan
  • Patent number: 11764568
    Abstract: Provided is a determination method of differential protection suitable for an electricity transmission line with multi-terminal T-connection.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: September 19, 2023
    Assignees: 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
  • Patent number: 11749985
    Abstract: A method and device for timing in time-varying distance protection based on multiple lines of a tower. The method includes: collecting an instantaneous current value at a time-varying distance protection installation location in the multiple lines of the tower, and acquiring preset parameters; calculating, according to the preset parameters and a multi-line ranging model, a multi-line ranging result; calculating, according to the preset parameters, the multi-line ranging result, and an adaptive calculation model, time of a section-II distance protection action and final time of a section-III distance protection action; and determining, according to the instantaneous current value, the preset parameters, and a cross-line failure auxiliary criterion model, final time of the section-II distance protection action.
    Type: Grant
    Filed: October 31, 2019
    Date of Patent: September 5, 2023
    Assignees: CHINA ELECTRIC POWER RESEARCH INSTITUTE, STATE GRID CORPORATION OF CHINA
    Inventors: Zexin Zhou, Tianhua Li, Hong Cao, Yarong Guo, Xingguo Wang, Dingxiang Du, Delin Wang, Pengfei Lv, Zhi Zhang
  • Patent number: 11742652
    Abstract: A method and device for starting direct-current (DC) transmission line protection, and a storage medium. The method includes: determining whether a sudden change of a DC line current at a present moment is greater than a sum of a memory start threshold and a maximum value in sudden changes of the DC line current within a time period preceding the present moment that is multiplied by a preset proportional coefficient, the time period being a time period between a moment preceding the present moment by a first duration and a moment preceding the present moment by a second duration; and starting DC transmission line protection in response to determining that the sudden change of the DC line current at the present moment is greater than the sum.
    Type: Grant
    Filed: August 13, 2019
    Date of Patent: August 29, 2023
    Assignees: CHINA ELECTRIC POWER RESEARCH INSTITUTE, STATE GRID CORPORATION OF CHINA
    Inventors: Hong Cao, Zexin Zhou, Huanzhang Liu, Dingxiang Du, Xingguo Wang
  • Patent number: 11736969
    Abstract: A micro-power wireless access method and apparatus for the Internet of things for power transmission and transformation equipment involves a time synchronization process, a traffic channel access process, a control channel configuration information access process, and a control channel burst information access process. In the time synchronization process, an aggregation node determines a delay parameter and other parameters based on a timeslot in which traffic information randomly transmitted by a sensing terminal is located, and the sensing terminal adjusts transmission time of a corresponding frame based on the parameters. The traffic channel access process adopts a mode in which one-way reporting is mainly used, to minimize working time of a sensor. The present disclosure realizes limited two-way communication on a control channel, supports configuration of a sensor cycle, a threshold, and other parameters, and supports a retransmission mechanism on the control channel for important alarm information.
    Type: Grant
    Filed: November 3, 2021
    Date of Patent: August 22, 2023
    Assignees: State Grid Jiangsu Electric Power Co., Ltd. Research Institute, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, State Grid Jiangsu Electric Power Co., Ltd., State Grid Corporation of China
    Inventors: Jianhua Qin, Yongling Lu, Hong Liu, Chengbo Hu, Zhen Wang, Chao Yun, Min Zheng, Jun Jia, Guojiang Zhang, Lingling Xu, Fengbo Tao, Qiang Huang, Ziquan Liu, Xueqiong Zhu, Chong Tan
  • Patent number: 11731280
    Abstract: A cable trench inspection robot. The cable trench inspection robot includes a base spreading system, and a camera lifting system disposed on the base spreading system, where the base spreading system includes a base plate, a linear action unit, a cantilever plate, a walking assembly, and a jacking assembly, and the camera lifting system includes a travel block, an imitated four-bar assembly, a support rod, and a camera assembly. Such inspection can realize a through-wall operation by using a cable trench, thereby avoiding many use problems caused by a firewall, and efficiently completing a predetermined inspection task.
    Type: Grant
    Filed: August 20, 2021
    Date of Patent: August 22, 2023
    Assignees: STATE GRID ANHUI ELECTRIC POWER RESEARCH INSTITUTE, State Grid Corporation of China
    Inventors: Tao Sun, Minghao Fan, Jiaqing Zhang, Jia Xie, Bo Yan, Daoyou Huang, Songyuan Cao, Liangpeng Ye
  • Publication number: 20230253793
    Abstract: Provided an intermittent characteristic-based demand-side resource coordination control method and system. The method includes: receiving a control request, where the control request is used for requesting control of demand-side resources having an intermittent characteristic; determining a target total control quantity of demand-side resources; determining a coordination strategy of multiple demand-side resources and an action quantity of each of the multiple demand-side resources; and performing coordinated control on the multiple demand-side resources based on the target total control quantity of demand-side resources, the coordination strategy, and the action quantity of each of the multiple demand-side resources.
    Type: Application
    Filed: October 30, 2020
    Publication date: August 10, 2023
    Applicants: CHINA ELECTRIC POWER RESEARCH INSTITUTE COMPANY LIMITED, STATE GRID CORPORATION OF CHINA
    Inventors: Yaping Li, Shengchun Yang, Jianguo Yao, Jian Geng, Feng Li, Wenbo Mao, Yong Wang, Jun Liu, Kedong Zhu, Jiahao Yan, Jiantao Liu, Xiaorui Guo, Jing Zhou, Liwen Wang, Peng Xu, Lingling Pan
  • Publication number: 20230153737
    Abstract: A method for evaluating the effectiveness of a transformer fire extinguishing system based on a natural language fuzzy analysis is provided, and a method and device for evaluating the fire extinguishing system are established. An expert fuzzy evaluation matrix is established by natural language fuzzifying and de-fuzzifying methods for the effectiveness of the fire extinguishing system. According to the relative influence of each index in the evaluation index system of the effectiveness of the fire extinguishing system, the weight comparison of each index is determined, and the index subjective weight is established based on the weight comparison of each index. A de-fuzzified matrix is obtained by de-fuzzifying an expert fuzzy evaluation matrix, and based on the de-fuzzified matrix, an objective weight is obtained by an entropy weight method. A comprehensive weight is obtained by combining the subjective and objective weights.
    Type: Application
    Filed: January 12, 2023
    Publication date: May 18, 2023
    Applicants: STATE GRID ANHUI ELECTRIC POWER RESEARCH INSTITUTE, STATE GRID CORPORATION OF CHINA
    Inventors: Jiaqing ZHANG, Fengju SHANG, Xiaodong ZHANG, Xinjie QIU, Dengfeng CHENG, Yifu ZHOU, Yi GUO, Yubiao HUANG, Wen SU, Rui LIU
  • Publication number: 20230152247
    Abstract: A live flaw detection system for a multi-bundled conductor splicing sleeve and an application method thereof are disclosed. The system includes an upper apparatus and a lower apparatus, where the upper apparatus includes an unmanned aerial vehicle and an industrial X-ray machine, and a laser sensor, and the lower apparatus includes a press plate frame apparatus, vertical screw slide table modules, a horizontal screw slide table module, a projection imager, and a linear retractable apparatus. The unmanned aerial vehicle functions as a power apparatus that controls the system to be online or offline, the industrial X-ray machine is configured to perform ray flaw detection on each splicing sleeve, the laser sensor is configured to guide the unmanned aerial vehicle to land the lower apparatus on splicing sleeves accurately, and the press plate frame apparatus is configured to fixedly clamp the splicing sleeves.
    Type: Application
    Filed: May 9, 2022
    Publication date: May 18, 2023
    Applicants: State Grid HuNan Electric Company Limited, STATE GRID HUNAN EXTRA HIGH VOLTAGE TRANSMISSION COMPANY, State Grid Corporation of China
    Inventors: Dehua ZOU, Shasha PENG, Zhipeng JIANG, Zhenyu WANG, Bocheng LI, Qiaosha XIAO, Yurong XU, Zhenyu CHEN, Wenyuan ZENG, Zhiguo LIU