Risk Management of Closed-Loop Switching Operation for AC-DC Hybrid Smart Distribution System

This paper studied the risk of closed-loop operation specially for a practical AC-DC hybrid smart distribution network, providing main considerations and methods. The perception and control method for the risk of closed-loop operation was proposed, and a simulation calculation tool of closed-loop operation for a 10kV/110kV/ ± 160kV AC-DC distribution network was developed, and a mode for quickly sensing and controlling the operational risks of closed-loop was provided. The actual system closed-loop operation for verification shows that the proposed method can quickly sense and effectively control the risks of closed-loop operation, and improve the reliability and resilience of a complex AC-DC hybrid operation intelligent distribution network.