Research on the Mathematical Model of Combined Cycle Power Plant for Power System Simulation for PSD-BPA

Abstract

Based on the analysis of the combined cycle unit dynamic characteristics and the demand of power system simulation, basic principles of combined cycle unit modeling are presented. Through mathematical derivation and reasonable simplification, mathematical model of gas turbine and steam turbine is integrated into the general structure of power system simulation software. The problem that the power system simulation software has no special combined cycle model is solved, the accuracy of the model is verified by comparing the simulation results with the field test data, and research results are helpful to improve the accuracy of power system simulation.