Abstract：According to the characteristics of additional synchronous condenser at converter station, the excitation system for synchronous condenser is configured with starting excitation which is auxiliary excited and main excitation which is self-excited. The starting excitation and main excitation need to quickly switch at DC side during coasting of the synchronous condenser, in order to achieve running down grid-connection. In this paper, a method of controlling the excitation in the process of running down grid-connection is proposed. Through the coordinated control of the corresponding excitation regulator to achieve two-stage voltage raised, to switch fast from starting excitation to main excitation. Now this method has been successfully applied to Zhalute converter station. It is proved that this method can realize switch and voltage raised fast and without disturbance during coasting of the synchronous condenser. It also can reduce the impact caused by the voltage difference when the large-scale synchronous condenser is connected to the grid. It is of great significance to the safe, efficient and reliable operation of the large-scale synchronous condenser.
王亚婧, 朱宏超, 袁亚洲, 徐春建. 大型调相机惰转并网过程中的励磁控制策略[J]. 电气技术, 2019, 20(3): 89-92.
Wang Yajing, Zhu Hongchao, Yuan Yazhou, Xu Chunjian. The excitation system control strategy for running down grid-connection of large capacity synchronous condenser. Electrical Engineering, 2019, 20(3): 89-92.
2019, Vol. 20 
