Abstract：Aiming at the problems of power balance and voltage fluctuation in DC distribution network, a new hierarchical coordinated control method is proposed based on the research of DC distribution network topology and various operation modes. The method coordinates the working mode of each sub-module by controlling the DC bus voltage variation, and can maintain the power balance and voltage stability in the distribution network under different conditions. The voltage segmentation drooping and multi-point coordination control strategy can smoothly switch various operating states. Finally, the system model is built and simulated. The results show that under the condition of light, wind speed and sudden load, the system can be quickly reacted and stabilized, which proves the effectiveness and feasibility of the control method.
赖一峰. 直流配电网的电压协同控制及稳定运行研究[J]. 电气技术, 2019, 20(7): 42-47.
Lai Yifeng. Research on voltage synergy control and stable operation of DC distribution network. Electrical Engineering, 2019, 20(7): 42-47.
2019, Vol. 20 
