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1.发明公开公开(公告)号：US20240258916A1
公开(公告)日：2024-08-01
申请号：US17925324
申请日：2022-09-26
申请人： State Grid Chongqing Electric Power Co. Electric Power Research Institute , State Grid Corporation of China
发明人： Hui Fang , Jingsen Zhou , Yongtao Chen , Fan Mu , Shengyi Zhu , Cheng Wang , Lei Li , Hongji Xiang , Yanan Yu , Qiang Xiao , Lining Hu , Zhongyi Wen
摘要： A modulation method for a direct current (DC) coupling converter with less DC voltage sensors includes: obtaining a voltage modulated wave vr* and a current reference value ig* of the DC coupling converter; performing judgment on the voltage modulated wave vr* and the current reference value ig*, and determining a switch state of the DC coupling converter based on a result of the judgment; and when a DC voltage sensor of an electrolytic capacitor of an intermediate power module is removed, modulating a DC voltage sensor based on the voltage modulated wave vr* and a difference between DC voltages on electrolytic capacitors of the other two power modules. When the intermediate DC-side voltage sensor is removed, DC voltages of various modules of a converter system of a DC coupling power unit can still be balanced, and quality of a grid-connected current is not affected by a fault.
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公开(公告)号：US11867616B2
公开(公告)日：2024-01-09
申请号：US17251810
申请日：2020-10-29
申请人： State Grid Chongqing Electric Power Co. Electric Power Research Institute , State Grid Corporation of China
发明人： Qiang Yao , Shiling Zhang , Yulong Miao , Yongtao Chen , Xintian Li
IPC分类号： G01N21/3504 , G01J3/42 , G01N21/39
CPC分类号： G01N21/3504 , G01J3/42 , G01N21/39 , G01J2003/423
摘要： 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.
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公开(公告)号：US20220317032A1
公开(公告)日：2022-10-06
申请号：US17251810
申请日：2020-10-29
申请人： State Grid Chongqing Electric Power Co. Electric Power Research Institute , State Grid Corporation of China
发明人： Qiang Yao , Shiling Zhang , Yulong Miao , Yongtao Chen , Xintian Li
IPC分类号： G01N21/3504 , G01J3/42 , G01N21/39
摘要： 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.
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公开(公告)号：US11385273B2
公开(公告)日：2022-07-12
申请号：US17041597
申请日：2019-11-05
申请人： STATE GRID CHONGQING ELECTRIC POWER CO. ELECTRIC POWER RESEARCH INSTITUTE , STATE GRID CORPORATION OF CHINA
发明人： Wenxin Peng , Xingzhe Hou , Ke Zheng , Xiaorui Hu , Songnong Li , Wenli Chen , Jun Ye , Full Yang , Xingzhi Liu
摘要： 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.
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公开(公告)号：US20200086753A1
公开(公告)日：2020-03-19
申请号：US15750879
申请日：2017-12-12
申请人： STATE GRID CHONGQING ELECTRIC POWER CO. ELECTRIC POWER RESEARCH INSTITUTE , STATE GRID CHONGQING ELECTRIC POWER COMPANY , STATE GRID CORPORATION OF CHINA
发明人： Xingzhe HOU , Bin ZHU , Yuechun LV , Guojun HE , Zhi LI , Yongxiang LIU , Hongliang SUN , Yi LONG , Jing ZHANG , Huicai WANG , Tingting XU , Li ZHOU , Lin GONG , Yongliang JI
摘要： A method for charging an electric vehicle includes steps that a master device sorts multiple received charging request information according to a preset sorting rule, where the charging request information includes position information of the electric vehicle to be charged; the master device sends a charging instruction to a charging system according to a sorting result; the charging system receives and processes the charging instruction and then transmits the charging instruction to an automated guided vehicle; and the automated guided vehicle travels, according to the position information, to a position of the electric vehicle to be charged, and charges the electric vehicle to be charged.
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6.发明申请Method for On-Line Diagnosing Gradually-Changing Fault of Electronic Current Transformers 审中-公开在线诊断电子式电流互感器逐渐变化故障的方法公开(公告)号：US20150268290A1
公开(公告)日：2015-09-24
申请号：US14436815
申请日：2013-10-09
申请人： STATE GRID CORPORATION OF CHINA (SGCC) , STATE GRID CHONGQING ELECTRIC POWER CO. ELECTRIC POWER RESEARCH INSTITUTE
发明人： Guojun He , Ruilin Xu , Tao Chen , Youqiang Zhang , Hongbin Wang , Jian Luo , Jin Gao , Xiaoyong Zhang , Xiaorui Hu , Jiayong Zhong , Zujian Liu , Shuyou Yao , Hongxin Yu , Yan He , Jie Li , Wei Xiong , Su Wei , Fei Huang , Ruimiao Wang , Kun Jiang , Xin Xu , Te Zhu , Yan Wei
IPC分类号： G01R31/02
CPC分类号： G01R31/027 , G01R35/02
摘要： A method for on-line diagnosing gradually-changing fault of electronic current transformers comprises the following steps collecting output signals of electronic transformers of a whole transformer substation, calculating theoretical instantaneous values of the current at the tail ends of power transmission lines and on secondary sides of transformers at every moment, comparing the theoretical instantaneous values with the corresponding collected values, calculating residual errors of the electronic current transformers at the head and tail ends of each power transmission line and the primary and the secondary sides of each transformer respectively, judging whether gradually-changing fault occurs with the electronic current transformers by comparing the residual errors with preset threshold values, and simultaneously performing Kirchhoff detection by injecting current into a busbar to position a fault transformer.
摘要翻译： 一种用于在线诊断电子电流互感器逐渐变化的故障的方法包括以下步骤：收集整个变电站电子变压器的输出信号，计算输电线末端和次级侧电流的理论瞬时值 分别对理论瞬时值和相应的收集值进行比较，分别计算出各变压器线路和各侧变压器的前端和后端电子电流互感器的残余误差，判断是否 通过将残留误差与预设阈值进行比较，电子电流互感器发生逐渐变化的故障，同时通过将母线注入母线来定位故障变压器来同时执行基尔霍夫检测。
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公开(公告)号：US20200215927A1
公开(公告)日：2020-07-09
申请号：US15751972
申请日：2017-12-12
申请人： STATE GRID CHONGQING ELECTRIC POWER CO. ELECTRIC POWER RESEARCH INSTITUTE , STATE GRID CHONGQING ELECTRIC POWER COMPANY , STATE GRID CORPORATION OF CHINA
发明人： Xingzhe HOU , Bin ZHU , Jianguo WANG , Guojun HE , Zhi LI , Yongxiang LIU , Hongliang SUN , Yi LONG , Jing ZHANG , Huicai WANG , Tingting XU , Li ZHOU , Lin GONG , Yongliang JI
IPC分类号： B60L53/35 , B60L53/18 , B60L53/16 , B60L53/66 , H02J7/02 , G06Q50/06 , G06Q20/08 , G06Q10/06 , G05B15/02
摘要： A charging method includes that after receiving a charging request, a master control device arranges a parking space for an electric vehicle to be charged and sends a traction device a movement instruction generated from the charging request; the traction device drives, according to the movement instruction, a charging controller to move along a guide rail to above the electric vehicle to be charged; the master control device sends a cable transferring instruction to a cable transferring device and the cable transferring device starts to lower a cable; after the cable transferring device lowers the cable to a preset position, the master control device sends a stop instruction to the cable transferring device and the cable transferring device stops lowering the cable; and the cable charges the electric vehicle to be charged.
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公开(公告)号：US09651604B2
公开(公告)日：2017-05-16
申请号：US14897501
申请日：2014-10-23
申请人： State Grid Chongqing Electric Power Co. Electric Power Research Institute , State Grid Corporation of China
发明人： Xingzhe Hou , Jin Fu , Qian Wang , Minghui Bao , Gaolin Wu , Shiyu Tang , Yongliang Ji , Wei Chen
CPC分类号： G01R31/08 , G01R31/021 , G01R31/026 , G01R31/083 , G01R31/085 , G01R31/086
摘要： A grounding grid breakpoint diagnostic method for a transient electromagnetic method, based on a transient electromagnetic detection apparatus. The method comprises: (101) disposing a test line at a position above a grounding grid to be diagnosed on the ground, and determining coordinates of a detection point; (102) obtaining information about coordinates of the detection point, and coinciding the center of the transient electromagnetic detection apparatus with the coordinates of the detection point; (103) performing, by the transient electromagnetic detection apparatus, measurement along the test line point by point, so as to obtain measurement data; (104) processing, by using diagram forming software, the measurement data to form a longitudinal resistivity cross-section diagram of the detection point according to a preset formula; (105) determining whether a breakpoint occurs at the detection point according to the longitudinal resistivity cross-section diagram. The method does not depend on a design material of a grounding grid, and can implement non-excavation grounding grid breakpoint diagnosis without outage, thereby reducing economic losses in a diagnosis process.
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公开(公告)号：US20160358322A1
公开(公告)日：2016-12-08
申请号：US14894336
申请日：2015-08-22
申请人： STATE GRID CHONGQING ELECTRIC POWER CO. ELECTRIC POWER RESEARCH INSTITUTE , STATE GRID CORPORATION OF CHINA , THE SMARTECH INSTITUTE
发明人： Wei Song , Jin FU , Gaolin Wu , Qing Zhou , Bangfei Deng , Lingyun Wan , Qianbo Xiao , Haibing Zhang , Ying Zhang , Wenjie Zhang , Jianfeng Gan , Yuping Wang , Jiaqi Zhang , Haijun Hu , Haipeng Liang
IPC分类号： G06T7/00
CPC分类号： G06T7/00 , G06T7/70 , G06T2207/20061
摘要： The present application provides a method and a system for detecting data of an instrument. The method comprises controlling rotation of the current data image in a first direction and acquiring current projection values of a pointer of the instrument in a vertical direction from the current data image after acquiring a current data image from an instrument to be read; then, selecting a maximum projection value from the acquired projection values and determining a corresponding position of the pointer of the instrument as a position to be calculated; calculating a first rotation angle required by rotation of the pointer of the instrument to the position to be calculated; substituting the first rotation angle into a pre-stored first calculation formula and calculating a first angle between the pointer of the instrument and the position to be calculated; then, substituting the first angle into a formula of correspondence between a pre-stored angle between the pointer of the instrument and the position to be calculated and instrument graduations to calculate current instrument data of the instrument to be read, thus ensuring the accuracy of the resulting data under various conditions.
摘要翻译： 本申请提供了用于检测仪器的数据的方法和系统。 该方法包括：从第一方向控制当前数据图像的旋转，并从获取待读取的仪器获取当前数据图像之后，从当前数据图像获取仪器的指示器在垂直方向上的当前投影值; 然后从所获取的投影值中选择最大投影值，并将该仪器的指针的相应位置确定为要被计算的位置; 计算将所述仪器的指针旋转到要计算的位置所需的第一旋转角度; 将所述第一旋转角度代入预先存储的第一计算公式并计算所述仪器的所述指针与所计算的位置之间的第一角度; 然后，将第一角度代入仪器的指针与要计算的位置之间的预先存储的角度与仪器刻度之间的对应关系公式，以计算待读取的仪器的当前仪器数据，从而确保 在各种条件下得到的数据。
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公开(公告)号：US09191069B2
公开(公告)日：2015-11-17
申请号：US14373582
申请日：2013-09-02
申请人： STATE GRID CORPORATION OF CHINA (SGCC) , STATE GRID CHONGQING ELECTRIC POWER CO. ELECTRIC POWER RESEARCH INSTITUTE
发明人： Yi Wang , Guojun He , Hongliang Sun , Xingzhe Hou , Yongxiang Liu , Jing Ji , Xiaorui Hu
CPC分类号： H04B3/54 , H04B2203/5441 , H04W88/08
摘要： The present application provides a power line communications system and method. The system comprises a power line network, a sending apparatus, and a receiving apparatus. The receiving apparatus comprises at least two PLC modems connected through a power line link. The sending apparatus sends a signal to a target PLC modem in the receiving apparatus through a power line network. The target PLC modem is at least one PLC modem in the receiving apparatus. The PLC modems in the receiving apparatus simultaneously receive a signal, the PLC modems except the target PLC modem respectively send the received signal to the target PLC modem through a wireless link, and the target PLC modem restores the signal sent by the sending apparatus according to the signal received through the power line network and the signal received through the wireless link. According to the power line communications system and method provided in the present application, the signal transmission quality is improved, and the data transmission rate and the system reliability are improved.
摘要翻译： 本申请提供了一种电力线通信系统和方法。 该系统包括电力线网络，发送装置和接收装置。 接收装置包括通过电力线路链路连接的至少两个PLC调制解调器。 发送装置通过电力线网络向接收装置中的目标PLC调制解调器发送信号。 目标PLC调制解调器是接收设备中至少一个PLC调制解调器。 接收设备中的PLC调制解调器同时接收信号，除目标PLC调制解调器外的PLC调制解调器通过无线链路分别将接收到的信号发送到目标PLC调制解调器，目标PLC调制解调器恢复发送设备根据 通过电力线网络接收的信号和通过无线链路接收到的信号。 根据本申请提供的电力线通信系统和方法，提高了信号传输质量，提高了数据传输速率和系统可靠性。
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