State Grid Chongqing Electric Power Co. Electric Power Research Institute

State Grid Corporation of China

Chongqing Electric Power Research Institute

State Grid Corporation of China (Sgcc)

State Grid Chongqing Electric Power Company

Mianyang Gocreat Technology Co., Ltd.

Xingzhe Hou

Xiaorui Hu

Guojun He

Yongxiang Liu

Huicai Wang

Lin Gong

Hongliang Sun

Ke Zheng

Jianjun He

Qian Wang

Jing Zhang

Qiang Yao

Zhi Li

Yi Long

Xiyang Ou

Tingting Xu

Yongliang Ji

Li Zhou

Bin Zhu

Wei Chen

Kai Wu

Yi Wang

Gang Chen

Yulong Miao

Chao Tian

Yingying Cheng

Huaxiao Yang

Ji Xiao

Shiyu Tang

Full Yang

Jianming Hu

Xingzhi Liu

Jing Liu

Hongyu Long

Wenxin Peng

Kunyao Xu

Ruilin Xu

Songnong Li

Ni Qiu

Jiju Zhang

Jing Ji

Hua Wu

Linxia Li

Quan Zhou

Liankai Chen

Jianguo Wang

Tianlian Hu

Lefeng Shi

Wenli Chen

Zhengfa Liu

Huang Tang

Zewei Yang

Haibing Zhang

Yongfu Li

Yingkai Long

Jin Fu

Siquan Li

Xiaoxiao Luo

Jiankang Bao

Minghui Bao

Xiping Jiang

Jun Ye

Haitao Wu

Gaolin Wu

Yuxiang Liao

Jian Wu

A multi-sensor data fusion-based self-powered online monitoring system for a transmission line includes a plurality of detection nodes, an optical communication receiving and demodulation module, and a data processing module. The detection nodes each include a vibration energy harvesting module, a sensing module, and an optical communication modulation and transmitting module. The detection node uses a triboelectric nanogenerator (TENG) to convert and harvest energy, uses the sensing module to acquire a plurality of types of sensing data, and uses the optical communication modulation and transmitting module to modulate and transmit the sensing data. The optical communication receiving and demodulation module correspondingly receives and demodulates the sensing data, and transmits the sensing data to the data processing module for processing. The processing includes using a weighted least square method to fuse homogeneous sensing data and using a fuzzy comprehensive evaluation method to analyze heterogeneous sensing data.

Multi-sensor data fusion-based self-powered online monitoring system for transmission line

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.

Voltage measurement method and apparatus

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.

Charging system and method

A method for charging an electric vehicle is provided. The method includes that a mobile charging apparatus transmits its own status information to a centralized battery distribution station; the centralized battery distribution station determines, according to the received status information, whether power of a battery of the mobile charging apparatus is less than a first threshold; if the power of the battery of the mobile charging apparatus is less than the first threshold, the battery of the mobile charging apparatus is processed so that the power of the battery of the mobile charging apparatus is greater than a second threshold, wherein the second threshold is greater than the first threshold; and if the power of the battery of the mobile charging apparatus is not less than the first threshold, the mobile charging apparatus charges the electric vehicle.

Mobile charging apparatus and method for charging an electric vehicle

A method for controlling charging and discharging of an electric vehicle, the method comprising: first, analyzing information such as the battery status and the history default rate of electric vehicles applying for joining a power-grid charging and discharging service, and screening out an electric vehicle that can participate in the charging and discharging service for electric vehicles in the future; then, determining an optimal combination state of a generator set and the electric vehicle by using a method of electric energy transmission cost comparison; and further monitoring in real time the status of the electric vehicle during charging and discharging, and performing real-time power control on the electric vehicle, whereby an electric vehicle aggregator not only can meet the requirements on the charging and discharging service of the power system, but also can implement energy management and real-time control of the electric vehicles during charging and discharging, thereby reducing the effect of charging and discharging on the vehicle-mounted power battery.

System and method for controlling charging and discharging of electric vehicle

A grounding grid breakpoint diagnostic method for a transient electromagnetic method, based on a transient electromagnetic detection apparatus. The method comprises: () disposing a test line at a position above a grounding grid to be diagnosed on the ground, and determining coordinates of a detection point; () 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; () performing, by the transient electromagnetic detection apparatus, measurement along the test line point by point, so as to obtain measurement data; () 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; () 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.

Grounding grid breakpoint diagnostic method for transient electromagnetic method

A combined-type intelligent terminal wiring device and a plug device are provided. The wiring device includes a top wiring terminal board, a bottom wiring terminal board and a combined-type socket. An interior of each terminal of the combined-type socket has a spring-leaf structure, and each spring leaf includes an upper spring leaf and a lower spring leaf which are conductively connected via a contact surface. The top wiring terminal board has one end configured to connect the upper spring leaf, and the bottom wiring terminal board has one end configured to connect the lower spring leaf. The plug device includes a plug and a wiring terminal, the plug is located at a front end of the plug device and is a conductive metallic sheet, and the wiring terminal is located at a rear end of the plug device and has one end connected to the conductive metallic sheet.

Composite intelligent terminal wiring device and plug device

A cogeneration unit and wind power joint heating system and a scheduling method therefor. The joint heating system comprises a coal-fired steam-extraction condensing-steam cogeneration unit (A), a wind turbine generator unit (B), an air conditioner heat pump () parallel-connected to the coal-fired steam-extraction condensing-steam cogeneration unit (A) and to the wind turbine generator unit (B) via a power cable network (), and a hot water heating radiator () connected to the coal-fired steam-extraction condensing-steam cogeneration unit (A) via a heating pipe network (). The joint heating system also comprises an integrated scheduling control device (), a first remote centralized controller (), a second remote centralized controller (), and a third remote centralized controller (). Heating is provided to a user by the hot water heating radiator () and the air conditioner heat pump (); while electricity is provided jointly by the coal-fired steam-extraction condensing-steam cogeneration unit (A) and the wind turbine generator unit (B). The scheduling method comprises: after detecting over a period of time the state of power supply and the state of power consumption of the user via the integrated scheduling control device (), making a prediction for an upcoming period of time, and then scheduling on this basis. Under the premise of ensuring electricity supply and heat supply, the scheduling method reduces hot water flow outputted for heating, and compensates with electricity heating.

Cogeneration unit and wind power joint heating system and scheduling method therefor

A holographic detection device for a content of a gas in a GIS switch includes a laser and a data process system. The laser includes a laser emitter and a laser receiver which are fixed at a sampling port of the GIS switch and connected with the data process system. A holographic detection method for a content of a gas in a GIS switch includes emitting a laser beam towards the inside of the GIS switch; receiving the laser beam from the inside of the GIS switch, and calculating a content of hydrogen fluoride gas inside the GIS switch according to an intensity of the emitted laser beam and an intensity of the received laser beam. Since the laser beam goes through the inside of the GIS switch, there is a small error in the detection result, which thus can reflect a real state inside the GIS switch.

Holographic detection device and method for content of gas in GIS switch

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.

Power line communications system and method

Robot for testing electric energy meter

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Chongqing, China

Xingzhe Hou