Abstract:Zhangbei flexible DC grid project is the first flexible DC grid demonstration project in the world. Due to the weak overload ability of electronic device, and the single station capacity can reach 1/3 of the DC grid capacity, in order to ensure the safe and stable operation of the DC grid, the inter-station coordinated control system is configured in this project. This system realizes the cooperation between the four stations to ensure the stability of power flow and voltage under various disturbance conditions. At the same time, the power transmission limit capacity of the DC grid is calculated in the coordinated control system, which provides a basis for the stability control system to cut off new energy during the AC/DC hybrid operation.
卢宇, 姜崇学, 汪楠楠, 祝万. 柔性直流电网站间协调控制功能及稳控配合研究[J]. 电气技术, 2022, 23(4): 63-69.
LU Yu, JIANG Chongxue, WANG Nannan, ZHU Wan. Research on inter-station coordinated control and stability control cooperation in flexible DC grid. Electrical Engineering, 2022, 23(4): 63-69.