-
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.
-
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.
-
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.
-
4.发明授权公开(公告)号：US12106389B2
公开(公告)日：2024-10-01
申请号：US17773601
申请日：2021-07-12
申请人： STATE GRID JIANGSU ELECTRIC POWER COMPANY RESEARCH INSTITUTE , STATE GRID JIANGSU ELECTRIC POWER CO., LTD. , NANJING WOKESEN ELECTRIC POWER TECHNOLOGY CO., LTD. , JIANGSU ELECTRIC POWER RESEARCH INSTITUTE CO., LTD.
发明人： Qiang Li , Huachun Han , Xiaodong Yuan , Qun Li , Zhi Wu , Yongyong Jia , Chenyu Wu , Zhenhua Lv , Suyang Zhou , Weijia Tang , Shuai Lu , Chenggen Wang
摘要： A dispatching method for an electric-hydrogen energy system considering flexible hydrogen demand includes establishing an electric load flexibility equation, a power purchase and sale constraint equation, a renewable energy output constraint equation, a hydrogen load flexibility equation, an electricity-to-hydrogen production safety operation constraint equation and an electric power balance constraint equation, establishing an electric-hydrogen energy system dispatching model with the lowest operating cost of the electric-hydrogen energy system within the dispatching cycle as an objective function, and solving the electric-hydrogen energy system dispatching model to obtain an optimal dispatching result. As compared with the prior art, the present invention can effectively solve the problem of coordination between electric and hydrogen energy flows, while taking into account the flexibility of electric and hydrogen loads, further providing additional flexibility to the operation of the system.
-
公开(公告)号：US10153640B2
公开(公告)日：2018-12-11
申请号：US15739722
申请日：2016-11-30
发明人： Jiankun Liu , Ningyu Zhang , Qun Li , Jing Chen , Peng Li
摘要： The present invention discloses a novel Unified Power Flow Controller UPFC and its control method. Supposing that one end of DC converter is connected to the DC transmission line of HVDC converter station or substation and the other end is connected to the DC side of a series converter, the AC output voltage of the series converter can be controlled to regulate the line power of the UPFC for operation in UPFC and SSSC mode. In addition, when the number of transformers and shunt converters is decreased at the shunt side of the UPFC, the HVDC Converter Station can be used to provide active power for the series converter of UPFC, which can effectively reduce operation costs and ensure stable operation of power grid. Therefore, there is a bright application prospect for the invention.
-
-
-
-
搜索结果
5 条记录 (耗时 0.037 秒)
