A Simulation Platform for Modeling Islanding Power Systems and its Application in Designing Stability Control Schemes

Because of the limitation of models in existing power system simulation softwares, only frequency fluctuations in a small range can be simulated in such environment. Relative bigger frequency fluctuations in islanding systems can not be simulated in them. To solve that problem, the OPC control logic of generating units was studied, and was simplified properly. The speed control model and protection model of generation units for islanding operation analysis were also developed in this paper. Furthermore, these models were set up in a user-defined environment of PSASP7.0 together, with other original components in the software, comprised a control simulation platform for islanding system operation. Its operational status was simulated and analyzed in a real system as an example, which proved that the reasonableness and practicality of the established simulation platform.