Initialization Process of a Power System Transient Simulation Scheme for Stability Studies

TL;DR

This paper presents a new initialization process for power system transient simulations, ensuring steady state conditions at the start, using an algebraic formulation and efficient numerical methods, verified through case studies.

Contribution

It introduces a novel algebraic initialization method for transient power system simulations, enhancing accuracy and efficiency, applicable to various simulation schemes.

Findings

The initialization process ensures steady state at simulation start.

The method is verified as valid and efficient through case studies.

Applicable to different power system transient simulation schemes.

Abstract

The initialization process of a novel power system transient simulation scheme for stability studies is put forward, by further developing a "time-domain harmonic power-flow algorithm". The initialization process is formulated as an algebraic problem to ensure that the power system under study is in steady state and operated at a specified operating point, at the beginning of a transient simulation run. The algebraic problem is then solved efficiently by a preconditioned finite difference Newton-GMRES method. Case studies verify the validity and efficiency of the initialization process. The proposed initialization process is general-purpose and can be applied to other power system transient simulation schemes.