On Time Stepping Schemes Considering Switching Behaviors for Power System Electromagnetic Transient Simulation

TL;DR

This paper reviews existing time stepping schemes for power system electromagnetic transient simulation, clarifies misunderstandings, and proposes a novel scheme that effectively handles switching behaviors, validated through numerical case studies.

Contribution

The paper introduces a new time stepping scheme tailored for power systems with switching behaviors, addressing limitations of existing methods.

Findings

The proposed scheme effectively handles switching behaviors in simulations.

Numerical case studies demonstrate improved accuracy and stability.

Clarification of misconceptions in existing literature.

Abstract

Several difficulties will appear when typical electromagnetic transient simulation, using the implicit trapezoidal method and fixed step sizes, is applied to power systems with switching behaviors. These difficulties are addressed by different aspects of time stepping schemes in the literature. This paper first details the different aspects and reviews corresponding methods. Some misunderstanding in the literature is clarified. Issues that may be encountered by the existing methods are concurrently revealed. Based on the detailed review, the paper then puts forward a novel time stepping scheme which fully addresses the difficulties. The effectiveness of the proposed scheme is demonstrated via numerical case studies.