Research on Stability of Voltage of AC&DC Hybrid System

DC transmission brings in pressure on the supporting capacity of voltage of AC system along with its more and more wide application. Under the steady state, the reactive power consumed in the process of commutation in the converter station is equivalent to a half of that for transmission of active power. During the failure and in course of system recovery after removal of failure, there may be more reactive power to be consumed because of the regulation function of controller. A number of studies on the stability of voltage of AC/DC system have been conducted at home and abroad. This paper summarizes the research methods of the stability of voltage of AC&DC hybrid system.