Masuvalley & Partners
Voltage and current control method and device for direct-current power transmission system
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.
NR ELECTRIC CO., LTD. NR ENGINEERING CO., LTD.
H H H
H02J H02J H02J
inventional inventional inventional
Ke Wenqiang Yu Yunlong Jiang Zhaoqing Jie Jianmin Nannan Yongping
Wang Zhao Lu Dong Lu Hu Tian Xiao Wang Wang