Application of implicit precise time-integration method in power system transient stability analysis

ZHAO Zhi-qi，WANG Jian-quan
（College of Electrical Engineering， Zhejiang University， Hangzhou 310027， China）

Abstract： The power system transient analysis is of great importance to the power system operation.Aiming at overcoming the weaknesses of the implicit trapezoidal integration，traditional implicit integretation and precise time-integration method were applied to solve the power system transient stability calculation. After the analysis of the explicit precise time-integration method，then the implicit precise time-integration method was proposed according to characteristics of the implicit integretation which is of high precision and easy to use . The experimental results of NewEngland system（10 generators 39 buses system）were verified. The results indicate that the precise time-integration method is better on the calculation speed and the calculation precision than the traditonal integration method.
Key words： precise time-integration method；power system；transient stability；numerical calculation；implicit integretation