Optimal reactive power control of inverter-based distributed generator for voltage stability insight using Particle Swarm Optimization

Norhafiz Bin Salim, Takao Tsuji, Tsutomu Oyama, Kenko Uchida

    Research output: Contribution to journalArticle

    Abstract

    In many countries, past large-scale blackouts were caused by voltage instability phenomenon and it is of prime importance to enhance the voltage stability in order to realize stable power supply. This paper presents a methodology to increase loading margin (LM) in terms of voltage stability by using reactive power support of distributed generation (DG), in particular photovoltaic, considering the operating limits of power system components such as generators. The proposed method is based on optimal active and reactive power dispatch from DGs under normal and contingency conditions. Here, a trade-off relationship between reactive power injection and active power curtailment was carefully considered in optimizing the DG's contributions. The proposed method is based on Particle Swarm Optimization and its effectiveness was verified in Malaysian Electric Power System model along with constant power loads. It was observed through simulation results that optimal reactive power injection from DGs improved the maximum loading under the voltage stability constraint.

    Original languageEnglish
    Pages (from-to)392-404
    Number of pages13
    JournalIEEJ Transactions on Power and Energy
    Volume137
    Issue number5
    DOIs
    Publication statusPublished - 2017

    Keywords

    • Loading margin
    • Particle swarm optimization
    • Photovoltaic
    • Reactive power control
    • Voltage stability

    ASJC Scopus subject areas

    • Energy Engineering and Power Technology
    • Electrical and Electronic Engineering

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