Nonlinear Analysis of an Improved Swing Equation

TL;DR

This paper analyzes an improved swing equation model for synchronous generators, examining stability and frequency regulation without common simplifications, through theoretical analysis and simulations in different connection scenarios.

Contribution

It introduces a novel improved swing equation model that omits a key simplifying assumption, providing new insights into generator stability and regulation.

Findings

The improved model accurately predicts stability in both scenarios.

Simulations confirm theoretical stability results.

The model offers better insights than conventional swing equations.

Abstract

In this paper, we investigate the properties of an improved swing equation model for synchronous generators. This model is derived by omitting the main simplifying assumption of the conventional swing equation, and requires a novel analysis for the stability and frequency regulation. We consider two scenarios. First we study the case that a synchronous generator is connected to a constant load. Second, we inspect the case of the single machine connected to an infinite bus. Simulations verify the results.