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1.发明公开公开(公告)号：US20240110997A1
公开(公告)日：2024-04-04
申请号：US18001706
申请日：2022-08-04
申请人： STATE GRID JIANGSU ELECTRIC POWER CO., LTD. RESEARCH INSTITUTE , STATE GRID JIANGSU ELECTRIC POWER CO., LTD. , JIANGSU ELECTRIC POWER RESEARCH INSTITUTE CO., LTD.
发明人： Jingying CAO , Qiang HUANG , Jinggang YANG , Jie CHEN , Rong SUN , Jianjun LIU , Xiao TAN , Libin HU , Chenying LI , Wei ZHANG
摘要： Disclosed are a device and method for detecting defects of a high-voltage cable cross-bonded grounding system. The method comprises: selecting a protective grounding box of a cross-bonded grounding system, respectively connecting a signal excitation coupler to A-phase, B-phase and C-phase coaxial cables of the protective grounding box, selecting a stable signal with a frequency different from a power frequency or a field interference frequency, and testing effective current values and phases responded by the A-phase, B-phase and C-phase coaxial cables when the stable signal with the frequency F1 is injected into the A-phase, B-phase and C-phase coaxial cables of the protective grounding box in a coupled manner; and obtaining resistances and inductances of branch circuits of the cable cross-bonded grounding system by calculation according to measurement data, and determining if the cable cross-bonded grounding system has a connection defect.
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2.发明公开公开(公告)号：US20230322098A1
公开(公告)日：2023-10-12
申请号：US18001263
申请日：2021-07-02
申请人： STATE GRID JIANGSU ELECTRIC POWER CO., LTD. RESEARCH INSTITUTE , JIANGSU ELECTRIC POWER RESEARCH INSTITUTE CO., LTD.
发明人： Tiankui SUN , Mingming SHI , Xiaolong XIAO , Jinggang YANG , Liguo LIU , Qifeng HUANG , Shuyi ZHUANG , Wei SU , Lei GAO , Yubo YUAN , Xiaodong YUAN , Jian LIU , Shu CHEN
摘要： Disclosed is an electrical topology of an integrated DC charging station and an operation control method. The electrical topology comprises a supply side DC bus, K discrete charging pile units and a mutual aid total DC bus; each charging pile unit comprises an input DC bus, a mutual aid sub-DC bus, an output DC bus, N isolation branches, a non-isolation DC/DC module and an output terminal, the input DC bus is connected to the supply side DC bus, and the mutual aid sub-DC bus of each charging pile unit is connected to the mutual aid total DC bus; the isolation branch comprises an output branch and a mutual aid branch; and when all the output branches of one charging pile, unit are started and the output power cannot meet the required power, the mutual aid branches of other charging pile units are started to meet the required power.
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公开(公告)号：US20220307985A1
公开(公告)日：2022-09-29
申请号：US17617574
申请日：2021-08-10
申请人： State Grid Jiangsu Electric Power Co., Ltd. Research Institute , State Grid Jiangsu Electric Power Co., Ltd. , State Grid Corporation of China
发明人： Peng Xiao , Jianjun Liu , Dongliang Guo , Liheng Yang
摘要： A molecular probe-based safety prewarning and fault location system for an electrochemical energy storage station includes a molecular probe label, a camera, and a host. The present disclosure realizes real-time safety prewarning of a fault of an electrochemical energy storage device based on a color change of a gas sensing region of the molecular probe label, and locates an abnormal electrochemical energy storage device based on a position marker region of the molecular probe label or a position of the camera on a slide rail when the camera is facing the molecular probe label. Operation and maintenance personnel of an energy storage station can obtain a prewarning signal in time and take a corresponding safety measure. The molecular probe technology is a drive-free technology with advantages of high sensitivity, low costs, and anti-interference. It has important application value for operation safety of a large-scale energy storage station.
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公开(公告)号：US11374404B2
公开(公告)日：2022-06-28
申请号：US17059209
申请日：2020-08-26
申请人： 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.
发明人： 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
IPC分类号： H02J1/12
摘要： 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.
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公开(公告)号：US20210376603A1
公开(公告)日：2021-12-02
申请号：US17059209
申请日：2020-08-26
申请人： 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.
发明人： 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
IPC分类号： H02J1/12
摘要： 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.
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公开(公告)号：US11574759B2
公开(公告)日：2023-02-07
申请号：US16528597
申请日：2019-07-31
申请人： State Grid Jiangsu Electric Power Co., Ltd. Research Institute , Jiangsu Electric Power Research Institute Corporation Limited , State Grid Jiangsu Electric Power Co., Ltd. , Nanjing DNN Technology Co., LTD
发明人： Fengbo Tao , Jiansheng Li , Chao Wei , Yang Liu , Xu Wei , Yuncai Lu , Shu Chen , Hairong Wei , Yiming Wu , Xiaoping Yang , Jieqing Deng , Peng Wu , Tianxi Xie , Shengquan Wang , Caibo Liao , Ruibin Li
摘要： The present invention discloses a device for evaluating and demagnetizing residual magnetism quantity of a power transformer. A main circuit comprises a switching power supply the two ends of which are respectively connected with a filter capacitor and a resistor in parallel. A forward end of the switching power supply is connected with a main switch in series. A rear end of the main switch is connected with a series branch of a sixth switch and a first resistor, a series branch of a first switch and a second switch, and a series branch of a third switch and a fourth switch are connected in parallel. A driving circuit is respectively connected with driving ends of the main switch, the sixth, first, second, third and fourth switches. A control circuit is connected with the driving circuit for sending an instruction to the driving circuit.
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公开(公告)号：US20220361032A1
公开(公告)日：2022-11-10
申请号：US17621247
申请日：2021-11-03
申请人： 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
发明人： 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
摘要： 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.
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公开(公告)号：US11190007B2
公开(公告)日：2021-11-30
申请号：US17061235
申请日：2020-10-01
申请人： 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.
发明人： Chenyu Zhang , Yubo Yuan , Jinggang Yang , Shu Chen , Xiaodong Yuan , Jian Liu , Mingming Shi , Qun Li , Xuefeng Ge , Huiyu Miao , Ruihuang Liu , Yunlong Jiang
摘要： 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.
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9.发明公开公开(公告)号：US20240356335A1
公开(公告)日：2024-10-24
申请号：US18038990
申请日：2022-10-11
申请人： State Grid Jiangsu Electric Power Co.,Ltd. Research Institute , STATE GRID JIANGSU ELECTRIC POWER CO., LTD. , TAIZHOU POWER SUPPLY BRANCH OF STATE GRID JIANGSU ELECTRIC POWER CO., LTD. , JIANGSU ELECTRIC POWER RESEARCH INSTITUTE CO., LTD.
发明人： Yongling LU , Zhen WANG , Chengbo HU , Jinggang YANG , Jun JIA , Guojiang ZHANG , Rong SUN , Hui FU , Rushan WANG , Ting CHEN , Nan YAO , Ziquan LIU , Xueqiong ZHU , Hai XUE
CPC分类号： H02J3/38 , H02N2/186 , H02S10/12 , H02J7/345 , H02J2207/50
摘要： A micro-power wind-solar hybrid energy harvesting and power generating device including a solar power generation module, a wind power generation module, a control module, an energy storage module, and an accessory structure are provided. The solar power generation module is mainly composed of a solar thin film cell and a corresponding interface control circuit, and the wind power generation module includes a wind-induced vibration structure, a cantilever beam structure, a piezoelectric element, and a corresponding interface control circuit. The solar thin film cell is mounted at a top of the wind-induced vibration structure, and interface control circuits, the energy storage module, etc. are all arranged inside the wind-induced vibration structure. The control module is configured to handle an energy harvesting and power generating algorithm of the wind-solar hybrid power generating device to maximize the power generation quality and the power generation efficiency of the device.
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公开(公告)号：US20240067036A1
公开(公告)日：2024-02-29
申请号：US18001526
申请日：2021-06-04
申请人： JIANGSU ELECTRIC POWER RESEARCH INSTITUTE CO., LTD. , STATE GRID JIANGSU ELECTRIC POWER CO., LTD. RESEARCH INSTITUTE
发明人： Tiankui SUN , Yubo YUAN , Mingming SHI , Xin FANG , Jinggang YANG , Shuyi ZHUANG , Xiaodong YUAN , Chenyu ZHANG , Lei GAO , Peng LI , Yaojia MA , Shu CHEN , Jing CHEN , Qun LI , Jian LIU
摘要： Disclosed is a charging station capable of realizing mutual capacity aid, which comprises a plurality of charging units, a power bus and a mutual capacity aid bus. Each charging unit is powered by the power bus, and each charging unit provides mutual aid capacity for another charging unit through the mutual capacity aid bus or receives mutual aid capacity from other charging units through the mutual capacity aid bus. The charging station can realize rapid charging of electric vehicles, and can also realize mutual capacity aid.
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