Unified power system analyses and models using equivalent circuit formulation

TL;DR

This paper introduces a unified equivalent circuit approach for power system analysis, enabling consistent steady state and transient simulations for single-phase and three-phase systems within a single framework.

Contribution

It presents a novel physics-based modeling methodology that unifies various power system analyses, improving consistency and integration across different simulation types.

Findings

Successful demonstration on a three-phase induction motor

Validation against industry tools confirms model accuracy

Unified approach reduces analysis discrepancies

Abstract

In this paper we propose and demonstrate the potential for unifying models and algorithms for the steady state and transient simulation of single-phase and three-phase power systems. At present, disparate algorithms and models are used for the different analyses, which can lead to inconsistencies such as the transient analysis as time approaches infinity not matching the steady state analysis of the same conditions. Using our equivalent circuit formulation of the power system, we propose a methodology for forming physics-based models that can facilitate transient, balanced power flow, and three-phase power flow in one simulation environment. The approach is demonstrated on a three-phase induction motor. Existing industry tools are used to validate the model and simulation results for the different analyses.