Research on dynamic simulation of the induction motor synthetic load model based on PSASP/UPI

The accurate degree of power system dynamic simulation is directly related to the stable operation of power system, while the accuracy of load models have a direct influence on simulation results and final decisions. Based on PSASP/UPI, this paper develops an interface method linking the model to the transient stability program. By the transient stability program, load model can be linked to power system for dynamic simulation. Then the design idea of user program and realization steps of dynamic simulation are described. The interface principles between user program and transient stability program are showed. This paper connects induction motor synthetic load model with distribution network lumping to EPRI-36 bus system in PSASP for dynamic simulation, and the calculation results prove the correctness of the user program interface method. Therefore, the way to link load models to power system for dynamic simulation based on PSASP/UPI can be concluded.