The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 30, 2021
Filed:
Oct. 01, 2020
State Grid Jiangsu Electric Power Co., Ltd., Nanjing, CN;
State Grid Jiangsu Electric Power Co., Ltd. Research Institute, Jiangsu, CN;
State Grid Corporation of China, Xicheng District Beijing, CN;
Jiangsu Electric Power Research Institute Co., Ltd., Jiangsu, CN;
Chenyu Zhang, Jiangsu, CN;
Yubo Yuan, Jiangsu, CN;
Jinggang Yang, Jiangsu, CN;
Shu Chen, Jiangsu, CN;
Xiaodong Yuan, Jiangsu, CN;
Jian Liu, Jiangsu, CN;
Mingming Shi, Jiangsu, CN;
Qun Li, Jiangsu, CN;
Xuefeng Ge, Jiangsu, CN;
Huiyu Miao, Jiangsu, CN;
Ruihuang Liu, Jiangsu, CN;
Yunlong Jiang, Jiangsu, CN;
STATE GRID JIANGSU ELECTRIC POWER CO., LTD., Nanjing, CN;
STATE GRID JIANGSU ELECTRIC POWER CO., LTD. RESEARCH INSTITUTE, Jiangsu, CN;
STATE GRID CORPORATION OF CHINA, Beijing, CN;
JIANGSU ELECTRIC POWER RESEARCH INSTITUTE CO., LTD., Jiangsu, CN;
Abstract
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.