Influence Of Opc Function On Transient Stability Of Power System

The over-speed protection controller (OPC) of steam turbine is an important device to restrain the over-speed and protect safety of the equipment. However, in the simulation calculation of power system transient stability, the influence of OPC is not considered. This paper analyzes the four basic functions related to OPC(Automatic Stop Tripping, AST; Load Drop Anticipation, LDA; Close Interceptor Valves, CIV; 103% Over-speed Protection, 103%OP), establish its correlation model, study the influence of various functions of OPC on the transient stability of power system to improve the safety and stability of power system.