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:
Mar. 29, 2022
Filed:
Nov. 28, 2018
Nr Electric Co., Ltd., Jiangsu, CN;
Nr Engineering Co., Ltd., Jiangsu, CN;
Jiang Lu, Jiangsu, CN;
Yu Lu, Jiangsu, CN;
Yunlong Dong, Jiangsu, CN;
Yongping Wang, Jiangsu, CN;
Jie Tian, Jiangsu, CN;
Nannan Wang, Jiangsu, CN;
Wenqiang Zhao, Jiangsu, CN;
Zhaoqing Hu, Jiangsu, CN;
Ke Wang, Jiangsu, CN;
Jianmin Xiao, Jiangsu, CN;
NR ELECTRIC CO., LTD., Jiangsu, CN;
NR ENGINEERING CO., LTD., Jiangsu, CN;
Abstract
Disclosed in the present invention is a voltage and current control method for a direct-current transmission system. The method comprises: calculating a DC voltage reference value of a voltage source converter of a DC voltage control end, on the basis whether a direct-current voltage end of a direct-current pole of a direct-current transmission system substantially controls a direct-current voltage; using ½ of the calculated direct-current voltage reference value of the voltage source converter as a bridge arm voltage direct-current bias, calculating a difference between the direct-current voltage reference value of the voltage source converter and a measured direct-current voltage value, and inputting the difference into a direct-current voltage control outer loop of the voltage source converter to perform closed-loop control, so as to control the direct-current voltage or the direct current of the direct-current pole. Correspondingly, also provided is a voltage and current control device for the direct-current transmission system. By the means of the present invention, the direct-current voltage and the direct current of the direct-current transmission system provided with the voltage source converter can be effectively controlled.