Research and application of fast modeling methods for electromagnetic transients in large-scale power systems

Abstract

With the increasing scale and complexity of power system operation, in order to further improve the efficiency and accuracy of electromagnetic transient modeling of large-scale power systems, this paper proposes a set of fast conversion modeling methods from electromechanical transient simulation software BPA to electromagnetic transient simulation software RTDS for electrical models. The key technologies of fast modeling from BPA electromechanical transient model to RTDS electromagnetic transient model are introduced in detail from data parsing and verification, data pre-processing, sub-system division, model conversion and automatic layout wiring, and the system is applied to the study of RTDS automation modeling in a province of Southern Power Grid. The results show that the relative error of node voltage after conversion does not exceed 0.00076%; the relative error of both active and reactive power does not exceed 0.07%, the relative error of active power output of generator is 0.076%, and the relative error of reactive power output is 0.21%, and the steady-state and transient characteristics of the system before and after conversion are basically the same, thus verifying the accuracy and reliability of the fast modeling method of RTDS.