Patents Assigned to JIANGSU ELECTRIC POWER COMPANY
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Patent number: 11988655Abstract: A combined platform for testing fireproof materials for cables includes a main frame for providing operating space; an air circulation system including a fresh air supply unit for supplying fresh air into the operating space and an exhaust gas treatment unit for treating the gas in the operating space under set conditions; an open flame system for providing an open flame for testing cables; a water circulation system for supplying water at least to the exhaust gas treatment unit and the operating space; and a control system for collecting at least the temperature and gas concentration in the operating space, and performing process control based on the collected results. The actual working conditions of scenarios such as fire-resistant cable tunnels and fire-resistant cable trenches can be simulated, and multiple tests such as combustion performance test and physical and chemical performance test can be carried out under various working conditions.Type: GrantFiled: May 19, 2021Date of Patent: May 21, 2024Assignee: STATE GRID JIANGSU ELECTRIC POWER COMPANY RESEARCH INSTITUTEInventors: Chenying Li, Jie Chen, Xiao Tan, Yijun Fei, Wei Zhang, Jingying Cao, Yang Liu, Qiang Wu, Jinggang Yang, Qiang Huang, Rong Sun, Jian Liu, Hongze Li, Liguo Liu
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Patent number: 11178610Abstract: 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: GrantFiled: April 23, 2019Date of Patent: November 16, 2021Assignees: STATE GRID CORPORATION OF CHINA, GLOBAL ENERGY INTERCONNECTION RESEARCH INSTITUTE NORTH AMERICA, STATE GRID JIANGSU ELECTRIC POWER COMPANYInventors: Haifeng Li, Xiao Lu, Yingmeng Xiang, Chunlei Xu, Di Shi, Zhe Yu, Shiming Xu, Xueming Li, Jiangpeng Dai, Zhiwei Wang
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Patent number: 10652136Abstract: This patent relates to a multi-mode communication method for detecting states of power transmission line, which belongs to electric power communication technology field. In this method, there are sensing devices installed on power transmission line. These sensing devices are used to detect status signals of power transmission line. Status signals are sent to remote monitoring center through communication terminals. Both sensing devices and communication terminals are powered by battery. The main communication network between sensing devices and communication terminals is formed by ZigBee network. Meanwhile, Bluetooth network is a backup communication network between sensing devices and communication terminals. Communication terminals and remote monitoring center are linked through WinMAX.Type: GrantFiled: April 29, 2016Date of Patent: May 12, 2020Assignees: STATE GRID JIANGSU ELECTRIC POWER COMPANY NANJING POWER SUPPLY COMPANY, STATE GRID JIANGSU ELECTRIC POWER COMPANY, STATE GRID COMPANY CORPORATION OF CHINAInventors: Lei Wei, Min Lu, Mingchi Shao, Wei Xu, Qiusheng Li, Chuang Guo, Dianxin Chen, Dong Yan, Ling Jiang
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Patent number: 10611618Abstract: The present disclosure provides an amplitude limiting system of insulated aerial work platform, including an insulated aerial work platform having a telescopic arm, an insulated folding arm and retractable supporting legs, a luffing cylinder, a first pressure sensor, a balance valve, a selector valve, a flow meter, and a controller; the luffing cylinder is installed between the telescopic arm and the insulated folding arm and includes a hydraulic pressure chamber; the first pressure sensor is connected to the hydraulic pressure chamber of the luffing cylinder and is electrically connected to the controller; the balancing valve is arranged on the luffing cylinder; the selector valve is connected to the balance valve; the flow meter is connected in between the selector valve with the balance valve and is electrically connected to the controller.Type: GrantFiled: March 24, 2016Date of Patent: April 7, 2020Assignees: CHANG ZHOU CURRENT SUPPLY COMPANY OF JIANGSU ELECTRIC POWER COMPANY, JIANGSU ELECTRIC POWER COMPANY, STATE GRID CORPORATION OF CHINAInventors: Honghai Yin, Liang Ji, Zhen Xu, Jianjun He, Zehua Zhang
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Publication number: 20190384879Abstract: Provided are a method and apparatus for estimating a meteorology sensitive load power. The method includes: obtaining a meteorology sensitive load power estimation model; inputting a daily load curve of a date to be estimated to the meteorology sensitive load power estimation model and extracting a daily load curve dimension reduction feature of the date to be estimated; and outputting a meteorology sensitive load power based on the daily load curve dimension reduction feature of the date to be estimated and mapping relationships from daily load curve dimension reduction features onto meteorology sensitive load powers. The proposed estimation model can directly obtain the meteorology sensitive load power curve from the daily load curve, and is especially applicable to cases where meteorology data is frequently lost in practical applications.Type: ApplicationFiled: June 13, 2019Publication date: December 19, 2019Applicants: STATE GRID JIANGSU ELECTRIC POWER CO., LTD., STATE GRID CORPORATION OF CHINA, STATE GRID JIANGSU ELECTRIC POWER COMPANY RESEARCH INSTITUTE, HOHAI UNIVERSITYInventors: Jijun Yin, Qing Chen, Zheng Wu, Xiao Lu, Jianyu Luo, Lin Liu, Jingbo Zhao, Ping Ju, Yanxiang Chen, Chuan Qin, Jiajun Shi, Shiwu Liao, Xinyao Zhu, Dajiang Wang
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Patent number: 10422715Abstract: The present invention relates to a leak detection method for GIS based on vibration signals and belongs to the technical field of apparatus for detecting or reacting mechanical or electrical troubles. The method is carried out by the following steps: 1) Installing a vibration sensor on each connecting flange of each gas-tight chamber of the GIS; 2) Starting the GIS; 3) Acquiring the vibration signals of sensors when the GIS operation is stable after starting; 4) Doing de-noise processing on the collected vibration signal; 5) Doing 4-layer wavelet packet decomposition of the vibration signal after noise reduction to obtain the energy proportion of the vibration signal in each frequency band; 6) Analyzing the energy proportion of the vibration signal in each frequency band in step 5), Then alarm to notify the relevant personnel. Return to step 3) until the fault has been solved.Type: GrantFiled: February 3, 2017Date of Patent: September 24, 2019Assignees: STATE GRID JIANGSU ELECTRIC POWER COMPANY NANJING POWER SUPPLY COMPANY, STATE GRID JIANGSU ELECTRIC POWER COMPANY, HoHai UniveristyInventors: Chunning Wang, Honghua Xu, Hongzhong Ma, Kai Li, Baowen Liu, Yong Li, Bingbing Chen, Yangliu Cui
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Patent number: 10352981Abstract: The present invention provides a power-cable ground current self-adaptive monitoring method. The steps including configuring a sample baseline, determining an impact factor set of the sample data, sampling real-time data of ground current by a power-cable ground current monitoring system, perform digital filtering on the sampled real-time data of ground current, applying a self-adaptive method to process the filtered sample data, and uploading the processed sample data to a backend monitoring device for real-time monitoring. The present invention may solve high energy loss and low information amount problems. The power consumption of monitoring device may be reduced by more than 50%, and server resource occupancy percentage may be lowered by about 20%. Efficiencies of evaluating external insulation status of the are enhanced.Type: GrantFiled: November 27, 2014Date of Patent: July 16, 2019Assignees: CHANG ZHOU CURRENT SUPPLY COMPANY OF JIANGSU ELECTRIC POWER COMPANY, JIANGSU ELECTRIC POWER COMPANY, STATE GRID CORPORATION OF CHINAInventors: Tao Yu, Hui Zhu, Jian Du, Zheng Lu, Hao Wang
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Patent number: 10320627Abstract: This invention provides a cooperative coverage method for distribution network information perception. The cooperative coverage method includes the following steps: construction of connected cooperative coverage sets, which can cover all target nodes with as few information perception nodes as possible, and maintain the connectivity of each cooperative coverage set with connected sets construction methods based on of hierarchical clustering; Cooperative coverage set scheduling, introducing the concept of energy ratio threshold, dividing the life cycle of the system into multiple time slices, calculating the energy ratio of perception device set in each time slice to realize the set scheduling. The invention realizes the efficient utilization of the energy of the perception device through the construction and scheduling of the connected coverage set in different time slices, and improves the use efficiency of the information perception network.Type: GrantFiled: April 29, 2016Date of Patent: June 11, 2019Assignees: STATE GRID JIANGSU ELECTRIC POWER COMPANY NANJING POWER SUPPLY COMPANY, STATE GRID JIANGSU ELECTRIC POWER COMPANY, STATE GRID COMPANY CORPORATION OF CHINA, STATE GRID INFORMATION & TELECOMMUNICATION GROUP CO., LTDInventors: Lei Wei, Min Lu, Qinghai Ou, Zhu Liu, Shaoyong Guo, Wei Xu, Dong Yan, Shaojun Liu, Xinjian Zhao, Wei Li, Lisha Gao
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Patent number: 10082816Abstract: The invention relates to a method of differential protection in the power distribution networks based on phase difference principles. The method comprises the following steps: collecting the current and voltage signals of each loading switch; calculating phase difference between the corresponding currents at two adjacent loading switches, wherein at least one of the two adjacent loading switches accords with ?I? max>n·?IT+?Idz; tripping the two adjacent loading switches if the phase difference corresponding to the two adjacent loading switches being greater than a threshold then a section between the two adjacent loading switches being determined as a fault section. The method only needs to calculate the phase difference between the corresponding currents at the two adjacent loading switches, and achieves the fault determination according to the phase difference being greater than the threshold.Type: GrantFiled: March 21, 2016Date of Patent: September 25, 2018Assignees: XJ GROUP CORPORATION, XJ ELECTRIC CO., LTD, XUCHANG XJ SOFTWARE TECHNOLOGIES LTD, JIANGSU ELECTRIC POWER COMPANY RESEARCH INSTITUTE, STATE GRID CORPORATION OF CHINAInventors: Qiang Niu, Jingwan Liang, Shuai Jiang, Junhong Qiu, Huawei Jia, Meng Li, Lei Gao, Yongjian Tao, Yongxin Liu, Feng Li, Xintao Dong, Yake Xi
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Patent number: 10083709Abstract: The noise suppression method of individual active noise reduction system comprises the steps that: (1) initial noise digital signals are received and converted to serve as input signals of a BP neural network; (2) the input signals are processed to generate secondary digital signals; (3) the secondary digital signals are output to a loudspeaker and secondary noise is generated; (4) remained noise digital signals obtained by overlapping the initial noise and the secondary noise are received; whether remained noise digital signals is continuously constant for the set times is judged; if yes, the secondary digital signals are kept outputting; (5) if not, BP neural network parameters are optimized and adjusted with the amplitude of the remained noise digital signals being minimum as the optimality principle; remained noise digital signals of previous step are served as new input signals and the step (2) is executed again.Type: GrantFiled: January 15, 2015Date of Patent: September 25, 2018Assignees: STATE GRID JIANGSU ELECTRIC POWER COMPANY NAN JING POWER SUPPLY COMPANY, STATE GRID JIANGSU ELECTRIC POWER COMPANY, STATE GRID COMPANY CORPORATION OF CHINA, HOHAI UNIVERSITYInventors: Ning Jiang, Hongzhong Ma, Kai Li, Honghua Xu, Chunning Wang, Bingbing Chen, Hongyu Jiang
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Publication number: 20180167308Abstract: This patent relates to a multi-mode communication method for detecting states of power transmission line, which belongs to electric power communication technology field. In this method, there are sensing devices installed on power transmission line. These sensing devices are used to detect status signals of power transmission line. Status signals are sent to remote monitoring center through communication terminals. Both sensing devices and communication terminals are powered by battery. The main communication network between sensing devices and communication terminals is formed by ZigBee network. Meanwhile, Bluetooth network is a backup communication network between sensing devices and communication terminals. Communication terminals and remote monitoring center are linked through WinMAX.Type: ApplicationFiled: April 20, 2016Publication date: June 14, 2018Applicants: STATE GRID JIANGSU ELECTRIC POWER COMPANY NANJING POWER SUPPLY COMPANY, STATE GRID JIANGSU ELECTRIC POWER COMPANYInventors: Lei Wei, Min LU, Mingchi SHAO, Wei XU, Qiusheng Li, Chuang GUO, Dianxin CHEN, Dong YAN, Ling JIANG
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Patent number: 9997897Abstract: The present disclosure provides a quick connect and disconnect cable junction box, including: a box body, insulators, copper busbars, connection wires, T-shaped cable terminals, linear adapters, and an insulation spacer. The insulators, the copper busbars, the connection wires, and the T-shaped cable terminals are positioned inside the box body. The linear adapter includes a conductive rod, an insulation layer, a quick engagement connector, and a housing. One end of each of three linear adapters is electrically connected to the T-shaped cable terminal inside the box body. The three linear adapters, three T-shaped cable terminals, three connection wires, and three copper busbars form a three-phase electrical path. During operation, the three copper busbars are correspondingly connected to three phase lines of an incoming cable of a ring main unit; and the three linear adapters are engaged with quick connectors of three bypass cable connectors via the quick engagement connectors thereof.Type: GrantFiled: July 21, 2016Date of Patent: June 12, 2018Assignees: STATE GRID CHANG ZHOU CURRENT SUPPLY COMPANY OF JIANGSU ELECTRIC POWER COMPANY, STATE GRID JIANGSU ELECTRIC POWER COMPANY, STATE GRID CORPORATION OF CHINAInventors: Bing Gong, Yongming Qin, Jianjun He, Zhen Xu
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Patent number: 9891645Abstract: smart power distribution system and a method to progressively dispatch the power is described. The method steps are all automatic and self-adaptive. The method can be executed in an unattended manner to automatically correlate real time data vs. historical data, planning data vs. operation data. Based on a long cycle periodical variation and short-term random variations in load, and taking into account the temporary load power supply and maintenance needs, a multi-stage progressive multiple time scales optimal dispatching method is developed, including the distributed power, micro-grids, energy storage devices, electric vehicles charge-discharge facility and other elements of the Intelligent power distribution systems, to achieve coordinated operation of the network, power, load resources to ensure a continuous safe and reliable smart power distribution system operated at high quality and efficiency.Type: GrantFiled: June 10, 2014Date of Patent: February 13, 2018Assignees: JIANGSU ELECTRIC POWER COMPANY NANJING POWER SUPPLY COMPANY, STATE GRID CORPORATION OF CHINA, HOHAI UNIVERSITY, JIANGSU ELECTRIC POWER COMPANY, NANJINGHEHAI TECHNOLOGY LIMITED COMPANY, CHINA ELECTRIC POWER RESEARCH INSTITUTEInventors: Kun Yu, Peifeng Shen, Xingying Chen, Tingji Chen, Kai Chen, Hong Zhu, Lei Wei, Jing Xiao, Chunning Wang, Jianguo Yao, Yingchen Liao, Min Cai
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Patent number: 9871376Abstract: The invention provides a global optimization and dispatching method based on time scales. The method uses a target value system and a dispatch model. The global optimization and dispatching method takes input from the results from a variety of subtopics. The methods provide adjustment and optimization in accordance with the time scales that are given in the sub goal of each sub topic: long-term, mid-long-term, short-term, ultra short term and real time optimization. Smart distribution grid can improve operational efficiency, integrated application of new elements in the distribution network of distribution energy network, micro grid, energy storage device and non-linear loads. This invention is fully adapted to the smart grid trends, with a good prospective.Type: GrantFiled: June 10, 2014Date of Patent: January 16, 2018Assignees: NIANRI Technology Development Limited Company, State Grid Electric Power Research Institute, JIANGSU ELECTRIC POWER COMPANY, State Grid Corporation of ChinaInventors: Haodong Shen, Peifeng Shen, Tingli Chen, Kai Chen, Yalin Liu, Hong Zhu, Junjing Zhang, Jing Xiao, Hongwei Du, Tao Han, Wenlu Ji, Xing Luo, Wen Lu, Lin Wu, Rina Saqi
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Patent number: 9798310Abstract: Disclosed are a method for searching a cross-regional power supply area based on a common information model (CIM) and a system thereof. In the method, a hash function is first created according to a size of a power grid in which a power source is located; identification numbers of all devices in the power grid are mapped to a discrete hash table according to the hash function, and a collision is solved by using separate chaining; and a hash topological graph of the power grid is formed by using the discrete hash table; and a power supply area of a designated device is searched by using the hash topological graph. According to the present invention, devices in a power supply area are located rapidly and accurately by creating a discrete hash table for all device resources, so that the amount of computation is greatly reduced, and the efficiency of searching the power supply area is significantly improved.Type: GrantFiled: September 30, 2014Date of Patent: October 24, 2017Assignees: STATE GRID CORPORATION OF CHINA, STATE GRID JIANGSU ELECTRIC POWER COMPANY, STATE GRID SUZHOU POWER SUPPLY COMPANY, CHINA ELECTRIC POWER RESEARCH INSTITUTE, BEIJING KEDONG POWER CONTROL SYSTEM CO., LTD., NARI TECHNOLOGY CO., LTD.Inventors: Bing Han, Jianguo Yao, Jiaqing Zhao, Zemei Dai, Kejun Qian, Xuewei Shang, Chunlei Xu, Lingtao Zhang, Weijin Zhuang, Lin Zhao, Yongliang Meng, Pai Sun, Yang Lv, Yan Liu
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Publication number: 20170249955Abstract: The noise suppression method of individual active noise reduction system comprises the steps that: (1) initial noise digital signals are received and converted to serve as input signals of a BP neural network; (2) the input signals are processed to generate secondary digital signals; (3) the secondary digital signals are output to a loudspeaker and secondary noise is generated; (4) remained noise digital signals obtained by overlapping the initial noise and the secondary noise are received; whether remained noise digital signals is continuously constant for the set times is judged; if yes, the secondary digital signals are kept outputting; (5) if not, BP neural network parameters are optimized and adjusted with the amplitude of the remained noise digital signals being minimum as the optimality principle; remained noise digital signals of previous step are served as new input signals and the step (2) is executed again.Type: ApplicationFiled: January 15, 2015Publication date: August 31, 2017Applicant: STATE GRID JIANGSU ELECTRIC POWER COMPANY NANJING POWER SUPPLY COMPANYInventors: Ning JIANG, Hongzhong MA, Kai LI, Honghua XU, Chunning WANG, Bingbing CHEN, Hongyu JIANG
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Patent number: 9606185Abstract: The present invention provides an intelligent calibration system for backup-power automatic switching devices, including a power supply module, a control module for logic controls, a voltage output module and a current output module for outputting simulated voltage and current, a signal feedback module for sampling outputted voltage and current signals, a simulated circuit-breaker group, an auxiliary relay, a USB interface for communication, a keyboard for information input, a display module for information interaction and real-time panel presentation, an interface module to facilitate plug-in wires, an indicator light for indicating operation status and a computer for controlling the testing globally. The present invention facilitates easy and fast wiring, and conveniently displays operation interface and related information. The operation is intuitive and simple, overall test efficiency is improved.Type: GrantFiled: December 25, 2013Date of Patent: March 28, 2017Assignees: CHANG ZHOU CURRENT SUPPLY COMPANY OF JIANGSU ELECTRIC POWER COMPANY, JIANGSU ELECTRIC POWER COMPANY, STATE GRID CORPORATION OF CHINAInventors: Zhen Xu, Yi Wang, Shu Chen, Zuchen Dong, Liang Cao
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Patent number: 9576758Abstract: The present invention provides a portable single-phase air bypass switch for live power distribution network, including a housing member, a positioning member, a conductive circuit member, a clutch member, a switch-closing member and a switch-opening member. The positioning member includes a positioning nut, positioning frames, and a positioning column. The conductive circuit member includes a conductive end cover, an upper conductive rod, a pressing sleeve, a coupling nut, a conductive sleeve pipe, a stationary contact, a movable contact, and a lower conductive rod. The switch-closing member includes a switch-closing energy-storage rod, a switch-closing energy-storage ring, a switch-closing spring, a switch-closing positioning pin, a switch-closing release ring, and an inner sleeve pipe.Type: GrantFiled: April 21, 2014Date of Patent: February 21, 2017Assignees: CHANG ZHOU CURRENT SUPPLY COMPANY OF JIANGSU ELECTRIC POWER COMPANY, JIANGSU ELECTRIC POWER COMPANY, STATE GRID CORPORATION OF CHINAInventors: Jianjun He, Zhen Xu, Hui Zhu
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Patent number: 9404957Abstract: This invention publishes a fault diagnosis and location system for transformer core looseness, consists of vibration sensors, data collection and computer. It is of power transformer fault intelligent diagnosis technology technical field. Fault diagnosis and location method uses three vibration sensors positioned on the top of transformer tank, to obtain vibration signal, uses signal processing to analyze the signal, and obtains fault characteristics of the transformer core looseness. The characteristics respectively are 50 Hz, 150 Hz and 300 Hz frequency components, in which 300 Hz is main feature. When they reach a certain value at one position, it suggests that transformer core looseness near this position. By the comparison of differences among signals of three positions, fault location can be done. This invention manifests fault characteristics accurately and detects core looseness efficiently.Type: GrantFiled: July 19, 2012Date of Patent: August 2, 2016Assignees: JIANGSU NANJING POWER SUPPLY COMPANY, STATE GRID CORPORATION OF CHINA, HOHAI UNIVERSITY, JIANGSU ELECTRIC POWER COMPANYInventors: Kai Chen, Chunning Wang, Hongzhong Ma, Kai Li, Yiming Wu, Ying Zhang, Hongtao Liu, Peng Gao, Taotao Chen
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Publication number: 20160126038Abstract: The present invention provides a portable single-phase air bypass switch for live power distribution network, including a housing member, a positioning member, a conductive circuit member, a clutch member, a switch-closing member and switch-opening member. The housing member includes a main sleeve tube, an insulating sleeve pipe, a flange sleeve, and a bottom cover. The positioning member includes a positioning nut, positioning frames, and a positioning column. The conductive circuit member includes a conductive end cover, an upper conductive rod, a pressing sleeve, a coupling nut, a conductive sleeve pipe, a stationary contact, a movable contact, and a lower conductive rod. The clutch member includes a clutch, a clutch ring, and a clutch sleeve pipe. The switch-closing member includes a switch-closing energy-storage rod, a switch-closing energy-storage ring, a switch-closing spring, a switch-closing positioning pin, a switch-closing release ring, and an inner sleeve pipe.Type: ApplicationFiled: April 21, 2014Publication date: May 5, 2016Applicants: Chang Zhuo Current Supply Company of Jiangsu Electric Power Company, Jiangsu Electric Power Company, State Grid Corporation of ChinaInventors: JIANJUN HE, ZHEN XU, HUI ZHU