State Grid Corporation of China

State Grid Jiangsu Electric Power Company

State Grid Jiangsu Electric Power Co., Ltd. Marketing Center

State Grid Jiangsu Electric Power Design Consulting Institute Co., Ltd.

State Grid Jiangsu Electric Power Co., Ltd. Economic Research Institute

Boliang Liu

Chen Li

Zheng Xu

Zhenjian Xie

Ming Yan

Quanquan Wang

Wanchun Qi

Hui Cai

Wenjia Zhang

Zhuyi Peng

Feifei Zhao

Xingning Han

Caixuan Xu

Chengchen Huang

Zheren Zhang

Wentao Sun

Provided is a control method for a parallel MMC unit of a LCC-MMC hybrid cascade converter station. The control strategy includes: 1) numbering all MMC units connected in parallel in a MMC valve manifold; (2) for a MMC unit using a constant direct-current voltage control manner, calculating a direct-current instruction value of the MMC unit according to a direct-current measurement value; (3) for a MMC unit using a constant active power control manner, calculating an active power instruction value of the MMC unit according to the rated capacity of the MMC unit and a direct-current instruction value of a system rectifier station; (4) for the MMC unit using the constant direct-current voltage control manner, correcting a direct-current voltage instruction value of the MMC unit by using the direct-current instruction value and the direct-current measurement value, and controlling the MMC unit according to the corrected direct-current voltage instruction value.

Control method for a parallel MMC unit of a LCC-MMC hybrid cascade converter station

Growing community of inventors

Nanjing, China

Boliang Liu