Quick recovery control strategy for zhou shan VSC-MTDC

Abstract

Zhou Shan voltage source converter multi-terminal HVDC system (VSC-MTDC) enhances the receptiveness of wind power and improves the reliability of power supply. Electrical energy transfers flexibly between the islands in Zhou Shan. Restricted by the half-bridge sub module and disconnector, Zhou Shan VSC-MTDC cannot realies fast DC fault recovery. In order to solve this problem, damping fast recovery system and DC breaker are added. Meanwhile, the corresponding control strategy is proposed. It is verified by experimental results that the control strategy will realise fast DC fault recovery and improve the reliability of Zhou Shan VSC-MTDC dramatically.

Keywords

• circuit breakers
• HVDC power transmission
• HVDC power convertors
• power transmission reliability
• power transmission control
• power transmission faults
• wind power
• quick recovery control strategy
• Zhou Shan VSC-MTDC
• Zhou Shan voltage source converter-MTDC
• wind power
• power supply reliability
• electrical energy
• fast DC fault recovery
• DC breaker
• half-bridge sub module
• damping fast recovery system