Patents Assigned to State Grid Corporation of China
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Patent number: 11731280Abstract: 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: GrantFiled: August 20, 2021Date of Patent: August 22, 2023Assignees: STATE GRID ANHUI ELECTRIC POWER RESEARCH INSTITUTE, State Grid Corporation of ChinaInventors: Tao Sun, Minghao Fan, Jiaqing Zhang, Jia Xie, Bo Yan, Daoyou Huang, Songyuan Cao, Liangpeng Ye
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Publication number: 20230253793Abstract: 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: ApplicationFiled: October 30, 2020Publication date: August 10, 2023Applicants: CHINA ELECTRIC POWER RESEARCH INSTITUTE COMPANY LIMITED, STATE GRID CORPORATION OF CHINAInventors: 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
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Publication number: 20230153737Abstract: 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: ApplicationFiled: January 12, 2023Publication date: May 18, 2023Applicants: STATE GRID ANHUI ELECTRIC POWER RESEARCH INSTITUTE, STATE GRID CORPORATION OF CHINAInventors: Jiaqing ZHANG, Fengju SHANG, Xiaodong ZHANG, Xinjie QIU, Dengfeng CHENG, Yifu ZHOU, Yi GUO, Yubiao HUANG, Wen SU, Rui LIU
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Publication number: 20230152247Abstract: 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: ApplicationFiled: May 9, 2022Publication date: May 18, 2023Applicants: State Grid HuNan Electric Company Limited, STATE GRID HUNAN EXTRA HIGH VOLTAGE TRANSMISSION COMPANY, State Grid Corporation of ChinaInventors: Dehua ZOU, Shasha PENG, Zhipeng JIANG, Zhenyu WANG, Bocheng LI, Qiaosha XIAO, Yurong XU, Zhenyu CHEN, Wenyuan ZENG, Zhiguo LIU
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Patent number: 11632059Abstract: The present disclosure relates to a submodule topology circuit for a modular multilevel converter and a method for controlling same. The submodule topology comprises an inlet port and an outlet port, at least two half-bridge submodules, a plurality of first switching devices, a plurality of thyristors and a plurality of diodes, wherein the at least two half-bridges are connected in series and are provided between the inlet port and the outlet port, and each of the half-bridge submodules is provided with an input port, a first output port and a second output port.Type: GrantFiled: November 4, 2019Date of Patent: April 18, 2023Assignees: Yangzhou Power Supply Branch of State Grid Jiangsu Electric Power Co., Ltd., SOUTHEAST UNIVERSITY, State Grid Jiangsu Electric Power Co., Ltd., State Grid Corporation of ChinaInventors: Zhong Liu, Yang Xu, Xin Zhan, Wu Chen, Peipei Li, Dajun Ma, Renjie Sui, Yu Chen
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Patent number: 11616369Abstract: Provided is a control method for a parallel MMC unit of a LCC-MMC hybrid cascade converter station. The control strategy includes: 1) numbering all MMC units connected in parallel in a MMC valve manifold; (2) for a MMC unit using a constant direct-current voltage control manner, calculating a direct-current instruction value of the MMC unit according to a direct-current measurement value; (3) for a MMC unit using a constant active power control manner, calculating an active power instruction value of the MMC unit according to the rated capacity of the MMC unit and a direct-current instruction value of a system rectifier station; (4) for the MMC unit using the constant direct-current voltage control manner, correcting a direct-current voltage instruction value of the MMC unit by using the direct-current instruction value and the direct-current measurement value, and controlling the MMC unit according to the corrected direct-current voltage instruction value.Type: GrantFiled: October 1, 2020Date of Patent: March 28, 2023Assignees: STATE GRID JIANGSU ELECTRIC POWER CO., LTD., STATE GRID JIANGSU ELECTRIC POWER CO., LTD. ECONOMIC RESEARCH INSTITUTE, STATE GRID JIANGSU ELECTRIC POWER DESIGN CONSULTING INSTITUTE CO., LTD., STATE GRID CORPORATION OF CHINA, STATE GRID JIANGSU ELECTRIC POWER CO., LTD. MARKETING CENTERInventors: Hui Cai, Zhenjian Xie, Zhuyi Peng, Feifei Zhao, Xingning Han, Caixuan Xu, Chengchen Huang, Zheng Xu, Ming Yan, Zheren Zhang, Wanchun Qi, Wenjia Zhang, Wentao Sun, Chen Li, Quanquan Wang, Boliang Liu
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Patent number: 11615908Abstract: A flow-guiding rod includes a cooling channel provided in a rod portion of the flow-guiding rod, and a coolant inlet pipe and a coolant outlet pipe provided on end(s) of the flow-guiding rod. The coolant inlet pipe and the coolant outlet pipe are communicated with the cooling channel.Type: GrantFiled: November 21, 2018Date of Patent: March 28, 2023Assignees: State Grid Corporation of China, Tsinghua UniversityInventors: Shan Liu, Licheng Lu, Zehong Liu
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Publication number: 20230077959Abstract: Provided in the present disclosure are an IGBT device backside structure and a preparation method therefor, and an IGBT device, the IGBT device backside structure comprising a buffer layer, the buffer layer comprising a first activation efficiency buffer area corresponding to an active area of the IGBT device and a second activation efficiency buffer area corresponding to a terminal area of the IGBT device, the activation efficiency of the first activation efficiency buffer area being less than the activation efficiency of the second activation efficiency buffer area.Type: ApplicationFiled: June 15, 2021Publication date: March 16, 2023Applicants: STATE GRID SMART GRID RESEARCH INSTITUTE CO., LTD., STATE GRID SHANXI ELECTRIC POWER RESEARCH INSTITUTE, STATE GRID CORPORATION OF CHINAInventors: Li LI, Rui JIN, Yaohua WANG, Shaohua DONG, Jiang LIU, Mingchao GAO, Junmin WU, Lu BAI, Guanliang LI
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Publication number: 20230070173Abstract: 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: ApplicationFiled: January 29, 2022Publication date: March 9, 2023Applicants: CHINA ELECTRIC POWER RESEARCH INSTITUTE, STATE GRID CORPORATION OF CHINAInventors: Xingqi LIU, Enguo ZHU, Heping ZOU, Fantao LIN, Min LEI, Yinghui XU, Hao CHEN, Zhongxing WU, Yupeng ZHANG, Zixu ZHU, Yue HAN
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Publication number: 20230001269Abstract: Provided are a manned pole-climbing work platform and a pole-gripping mechanism thereof. The pole-gripping mechanism includes an arm and a distal pole-gripping mechanical hand. The distal pole-gripping mechanical hand includes a front jaw, a rear jaw, a forward-threaded rod, a reverse-threaded rod and a preloader. The front jaw and the rear jaw are articulated with the arm through pivots. The preloader is configured to drive the forward-threaded rod and the reverse-threaded rod to rotate synchronously. The forward-threaded rod and the front jaw are articulated with each other through a front thrust-nut composite pivot. The reverse-threaded rod and the rear jaw are articulated with each other through a rear thrust-nut composite pivot. The front jaw and the rear jaw are openable or closeable relative to each other.Type: ApplicationFiled: June 15, 2020Publication date: January 5, 2023Applicants: STATE GRID ANHUI ELECTRIC POWER CO., LTD. HUAINAN POWER SUPPLY COMPANY, ELECTRIC POWER RESEARCH INSTITUTE, ANHUI ELECTRIC POWER COMPANY OF STATE GRID, HUAINAN RUIXUE INTELLIGENT TECHNOLOGY CO., LTD., STATE GRID CORPORATION OF CHINAInventors: Shaolei Wu, Qi Wang, Xuming Tang, Xiaofeng Shan, Shan Gao, Xianguo Han, Mengdi Shi, Yu Feng, Yang Liu, Xiang Guo, Wudong Zhen, Wancheng Wang, Mingshuai Zhang, Qiangqiang Hou
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Publication number: 20220405655Abstract: A contribution identification method for noise at a boundary of an urban substation in the present disclosure includes the following steps: describing site elements and surrounding environmental elements of an urban substation; measuring and recording a background noise value at each boundary of the urban substation; determining an orientation of a specific sound source of the urban substation, and setting a corresponding measurement point at each boundary of the urban substation; obtaining a spectrum of each specific sound source; analyzing a contribution of each intra-substation sound source of the urban substation to noise at the boundary of the substation; analyzing a noise level of each sound source measurement point in the urban substation; recording measured data during noise measurement, and correcting a noise measurement result; and generating a test report.Type: ApplicationFiled: August 24, 2022Publication date: December 22, 2022Applicants: State Grid Henan Electric Power Research Institute, State Grid Corporation of ChinaInventors: Donghui Wang, Guangzhou Wang, Leilei Wang, Songyang Zhang, Zhuangzhuang Zhang, Jiaqi Zhang, Rui Li, Lin Lu, Dong Wang, Han Xiao, Degui Yao
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Patent number: 11500341Abstract: Provided is a source-load cooperation access method for a power distribution region. The method includes: establishing a timing feature model of a distributed generator and a timing feature model of a load respectively, acquiring a timing feature of the distributed generator in an access power distribution region by using maximum likelihood estimation and acquiring a timing feature of a user which accesses the power distribution region by using classification and regression trees; and inputting the timing feature of the distributed generator and the timing feature of the user which access the power distribution region into a combination optimization model, and determining a source-load access feeder through optimization.Type: GrantFiled: December 17, 2019Date of Patent: November 15, 2022Assignees: ELECTRIC POWER SCIENCE & RESEARCH INSTITUTE OF STATE GRID TIANJIN ELECTRIC POWER COMPANY, STATE GRID TIANJIN ELECTRIC POWER COMPANY, STATE GRID CORPORATION OF CHINA, TIANJIN UNIVERSITYInventors: Yan Qi, Xudong Wang, Yunfei Mu, Xuejun Shang, Bofeng Luo, Yi Ding, Xianxu Huo, Zhijun Zhang, Lei Wu
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Publication number: 20220361032Abstract: 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: ApplicationFiled: November 3, 2021Publication date: November 10, 2022Applicants: 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 ChinaInventors: 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
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Patent number: 11494748Abstract: Provided is a system for constructing mobile electric energy interconnection. The system includes at least one mobile electric energy exchange device, a mobile electric energy interconnection management platform and at least one stationary electric energy interconnection device. The mobile electric energy interconnection management platform is configured to match the at least one mobile electric energy exchange device with the at least one stationary electric energy interconnection device, and push a matching result to the at least one mobile electric energy exchange device and the at least one stationary electric energy interconnection device. Also provided is a method for constructing mobile electric energy interconnection, a data testing method and device, and a computer readable storage medium.Type: GrantFiled: November 30, 2018Date of Patent: November 8, 2022Assignees: INFORMATION AND COMMUNICATION BRANCH, STATE GRID JIANGXI ELECTRIC POWER COMPANY, STATE GRID CORPORATION OF CHINAInventors: Xianming Liu, Chi E, Ming Cheng, Hongjie Shen, Jun Li, Xin Sun, Zhenwen Tao, Hong Jiang, Bin Li, Jianxu Wang, Zilan Zhou
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Patent number: 11480594Abstract: Systems and methods for processing measurement data in an electric power system include acquiring the measurement data by a phasor measurement unit (PMU) coupled to a line of the electric power system, and inputting a plurality of the measurement data within a predetermined time window into a K-nearest neighbor (KNN) for identifying bad data among the plurality of the measurement data, wherein when one of the plurality of measurement data contains a bad datum, the machine learning module sends the bad datum to a denoising autoencoder module for correcting the bad datum, wherein the denoising autoencoder module outputs a corrected part corresponding to the bad datum, and when one of the plurality of measurement data contains no bad datum, the machine learning module bypasses the denoising autoencoder module and outputs the one of the plurality of measurement data as an untouched part.Type: GrantFiled: November 6, 2020Date of Patent: October 25, 2022Assignees: Global Energy Interconnection Research Institute Co. Ltd, State Grid Corporation of China Co. Ltd, State Grid Jiangsu Electric Power Co., Ltd., State Grid Shanxi Electric Power CompanyInventors: Yingzhong Gu, Guanyu Tian, Chunlei Xu, Haiwei Wu, Zhe Yu, Di Shi
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Publication number: 20220310288Abstract: 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: ApplicationFiled: October 14, 2020Publication date: September 29, 2022Applicants: 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
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Publication number: 20220285931Abstract: Disclosed are a direct-current transmission line protection method and system based on pure current characteristics.Type: ApplicationFiled: June 18, 2020Publication date: September 8, 2022Applicants: CHINA ELECTRIC POWER RESEARCH INSTITUTE, STATE GRID CORPORATION OF CHINAInventors: Zexin ZHOU, Huanzhang LIU, Pengfei LV, Hong CAO, Xingguo WANG, Siye RUAN, Dingxiang DU, Yong LI, Guosheng YANG, Mingliang JIN
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Patent number: 11416899Abstract: 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: GrantFiled: January 8, 2019Date of Patent: August 16, 2022Assignees: 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 TECHNOLOGYInventors: Ping Liu, Wenhua Zhang, Rui Xu, Fayuan Wu, Yongqiang Deng, Xiaomin Dai, Jinhui Tang, Hongxia Xiao
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Patent number: 11411406Abstract: 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: GrantFiled: October 25, 2019Date of Patent: August 9, 2022Assignees: TSINGHUA UNIVERSITY, STATE GRID JILINSHENG ELECTRIC POWER SUPPLY COMPANY, STATE GRID CORPORATION OF CHINAInventors: Wenchuan Wu, Bin Wang, Yong Sun, Hongbin Sun, Qinglai Guo, Chenhui Lin
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Publication number: 20220239093Abstract: 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: ApplicationFiled: October 31, 2019Publication date: July 28, 2022Applicants: CHINA ELECTRIC POWER RESEARCH INSTITUTE, STATE GRID CORPORATION OF CHINAInventors: Zexin ZHOU, Tianhua LI, Hong CAO, Yarong GUO, Xingguo WANG, Dingxiang DU, Delin WANG, Pengfei LV, Zhi ZHANG