-
1.发明公开
公开(公告)号：EP4429055A1
公开(公告)日：2024-09-11
申请号：EP22913399.6
申请日：2022-08-17
发明人： ZHOU, Wandi , HE, Zhiyuan , LIU, Yuan , ZHANG, Sheng , GAO, Chong , LI, Pengzhi
IPC分类号： H02H7/26
CPC分类号： H02H7/26
摘要： Disclosed in the present application are a self-energy-taking hybrid direct-current circuit breaker and an application method therefor. In the self-energy-taking hybrid direct-current circuit breaker, a breaking branch is connected to a through-current branch in parallel, a first end of a grounding branch is connected to the breaking branch, and a second end of the grounding branch is grounded. When a direct-current system operates stably, the through-current branch conducts a steady-state running current of the direct-current system, and when the direct-current system breaks down, a self-energy-taking capacitor in the breaking branch assists a power electronic device in achieving the breaking of a fault current.
-
公开(公告)号：EP4224659A1
公开(公告)日：2023-08-09
申请号：EP22814280.8
申请日：2022-08-12
发明人： ZHOU, Xiao , KONG, Ming , LIU, Yali , HAN, Naizheng , JI, Ke
摘要： Disclosed in the application are a method and apparatus for suppressing oscillation on a direct current (DC) side of a flexible DC transmission system (FDCTS), a computer-readable storage medium, and an electronic device. The method includes the following operations. Single-phase active power on an alternating current (AC) side of a converter valve, a DC voltage reference value of a DC transmission system, a bridge arm current, and a circulating-current control voltage compensation value are acquired. A DC component reference value of a bridge arm current of each phase is calculated according to the single-phase active power on the AC side of the converter valve and the DC voltage reference value of the DC transmission system. A DC component of the bridge arm current of each phase is calculated according to the bridge arm current. A voltage compensation value is calculated according to the DC component reference value of the bridge arm current and the DC component. A corrected bridge arm modulated wave is generated according to the voltage compensation value and the circulating-current control voltage compensation value. According to the application, a problem of oscillation on the DC side may be effectively suppressed, and a stable operation of FDCTS may be achieved, thereby improving reliability of the system. Furthermore, only an electrical quantity signal on a standard interface of an existing Valve-Based Controller (VBC) is used, without requiring additional devices, thereby reducing complexity of the device.
-
公开(公告)号：EP4177772A1
公开(公告)日：2023-05-10
申请号：EP22844625.8
申请日：2022-08-19
申请人： STATE GRID BLOCKCHAIN TECHNOLOGY (BEIJING) CO., LTD. , Beijing Power Exchange Center Co., Ltd. , State Grid Digital Technology Holding CO., LTD , State Grid Corporation of China (SGCC) , Jiangxi Power Exchange Center Co., Ltd. , Liaoning Power Exchange Center Co., Ltd. , East Inner Mongolia Power Exchange Center Company Ltd.
发明人： XIE, Kai , WANG, Dong , XIE, Xian , WANG, Hejian , LI, Da , XIE, Wen , JI, Shijie , LIU, Yonghui , ZHANG, Nan , XUAN, Jiaxing , SUN, Tian , BAI, Desheng , ZHANG, Shengnan , LI, Xin , CHEN, Gang , JIA, Haiqing , ZHANG, Zhe , LIANG, Hexiao , LI, Qingchun , FAN, Kun , LU, Shengzhi , YANG, Chao , ZHAO, Liang , FENG, Jingli , JIA, Fan , XING, Tong , ZHAO, Lihua , LI, Guomin , SU, Zhan
IPC分类号： G06F17/11
摘要： The present disclosure provides a blockchain-based green power certification method, apparatus, and system, to pre-process obtained basic data to obtain proof of existence data, certify the proof of existence data from a production side and a consumption side by using a certification chain and a token chain respectively, and obtain a green power attribute certificate and a green power consumption label if the certification is passed; generate a unique digital identifier for the green power attribute certificate and the green power consumption label separately based on a non-fungible token (NFT), which realizes non-interchangeability, indivisibility, and other characteristics of the certificate and the identifier; and supervise and verify a certification process by using a chain of custody, and generate a corresponding unique blockchain identifier for the certification chain, the token chain, and the chain of custody separately through multi-chain interaction, so as to realize data interaction between blockchains. This resolves problems of an inaccurate certification mechanism of renewable energy, and information asymmetry and data opaqueness in attribute certification and consumption evaluation processes of the renewable energy.
-
4.发明公开
公开(公告)号：EP3913805A1
公开(公告)日：2021-11-24
申请号：EP19910433.2
申请日：2019-11-12
发明人： GAO, Chong , ZHOU, Wandi , WEI, Xiaoguang , WANG, Huafeng , ZHANG, Sheng , LI, Pengzhi
摘要： A full-bridge module, a hybrid direct current circuit breaker of a full-bridge module and an application method, the full-bridge module comprising: two power electronic units (1, 2, 3, 4), two diodes (5, 6), a resistor (R1) and a capacitor (C); the two power electronic units (1, 2, 3, 4) are in reverse series connection to form an upper bridge arm; the two diodes (5, 6) are in common anode series connection or common cathode series connection to form a lower bridge arm; and once the resistor (R1) and the capacitor (C) are in parallel connection, same are connected between the upper bridge arm and the lower bridge arm.
-
公开(公告)号：EP3798650A1
公开(公告)日：2021-03-31
申请号：EP20711768.0
申请日：2020-01-06
发明人： LI, Wenpei , RUAN, Ling , LIU, Rui
摘要： Provided are an insulation diagnosis and defect positioning method, apparatus and device for an insulated bus pipe, and a storage medium. The method includes: applying a test voltage between a ground electrode and a conductor portion of the insulated bus pipe; identifying multiple grounded segments of the insulated bus pipe according to a ground shielded short wiring and a line ground wiring, measuring a length of each grounded segment and a ground current of each grounded segment at the test voltage, and calculating a ground current per unit length of each grounded segment; comparing ground currents per unit length of different grounded segments; measuring a capacitance current value of each grounded segment according to a quantity, a length and a number of intermediate couplings included in each grounded segment; comparing the ground current and the capacitance current value of each grounded segment; according to the comparison results, diagnosing an insulation status and implementing defect positioning of the insulated bus pipe.
-
公开(公告)号：EP3490091B1
公开(公告)日：2020-09-09
申请号：EP17830283.2
申请日：2017-05-22
发明人： TANG, Guangfu , HE, Zhiyuan , ZHOU, Wandi , WEI, Xiaoguang , ZHANG, Sheng , ZHAO, Yan , LUO, Xiang , LI, Pengzhi
-
公开(公告)号：EP2605358B1
公开(公告)日：2020-05-06
申请号：EP10853850.5
申请日：2010-09-06
发明人： LIU, Zhenya , SHU, Yinbiao , SUN, Xin , GAO, Liying
IPC分类号： H02J3/36
-
公开(公告)号：EP3196998B1
公开(公告)日：2020-02-19
申请号：EP14899584.8
申请日：2014-09-16
申请人： State Grid Corporation of China , Hubei Electric Power Transmission&Distribution Engineering Co.
发明人： YANG, Ying , JI, Bin , LIU, Zhengyun , WANG, Ming , ZENG, Chen , LI, Yong , LI, Jinge , XIONG, Wenhuan , ZHANG, Min , WANG, Lei , WANG, Wenmin , ZHU, Haibo , YI, Wenkai
IPC分类号： H02G1/02
-
公开(公告)号：EP3048698B1
公开(公告)日：2020-01-08
申请号：EP14866272.9
申请日：2014-06-19
发明人： ZHU, Guofang , LI, Hongmei , NIU, Jincang , ZHAO, Baoguang , LI, Shangzhen , SHI, Xin , LI, Yong , LIU, Xujie , WU, Guanbin , XU, Naiyuan , LI, Sun , LIANG, Yuanbin
-
公开(公告)号：EP2623379B1
公开(公告)日：2019-06-05
申请号：EP11828037.9
申请日：2011-08-25
发明人： WANG, Xiangqin , HU, Jiangyi , JIA, Junguo , QIU, Jinxuan , XU, Wufeng , ZHANG, Dongjiang , YU, Wenbin , DONG, Xinsheng , LIAN, Zhanwei , HAO, Zhanduo
-
-
-
-
-
-
-
-
-
搜索结果
98 条记录 (耗时 0.02 秒)
