944 / 2019-04-30 20:03:47

Study on Operation Characteristics of Wind Power Grid-connected Dual Feed AC/DC Hybrid System

Double feed DC transmission system; HVDC; Operating characteristics; Wind power

Aiming at the impact of large-scale wind power integration on the operation characteristics of HVDC, this paper builds an AC-DC hybrid double-fed HVDC system including wind power generation. In the PSCAD/EMTDC software, the steady-state and transient operation characteristics of wind power access system are studied. The results show that the system can reach stable operation within 0.2s when the system starts. The system has good steady-state operation characteristics. In the case of three-phase short circuit, the voltage on the inverter side drops more, and the system can function in the controller. Under the condition of one line disconnection, the other side can still maintain the normal transmission capacity, and the system has good fault recovery performance.