エチオピアの230 kvの風力統合網の電圧安定性評価と改善
1Faculty of Electrical and Computer Engineering, Bahir Dar Technology Institute, Bahir Dar University, Bahir Dar, Ethiopia. mezigebudn@gmail.com.
Scientific reports
|August 29, 2025
まとめ
エチオピアの電力網に風力発電を 組み込むことで電圧の不安定化が起こります 静的なVar補償器 (SVC) は,電圧の安定性と負荷を大幅に改善し,信頼性の高い再生可能エネルギーの統合を可能にします.
科学分野:
- 電気工学
- 電力システム工学
- 再生可能エネルギーの統合
背景:
- 風力発電の統合は,特にダブルフィード・インダクション・ジェネレーター (DFIG) により,電力網における電圧安定性に問題が生じます.
- 風力発電の断続的な性質は,ネットワークの安定性と信頼性を維持するための解決策を必要とします.
研究 の 目的:
- エチオピアの230 kV送電網の電圧安定性に対するDFIGベースの風力エネルギーの浸透の影響を調査する.
- 様々な風力発電のシナリオにおいて,静的VAR補給器 (SVC) の電圧安定性と負荷率の改善の効果を評価する.
主な方法:
- MATLABのパワーシステム分析ツールボックス (PSAT) を使用した継続電力フロー (CPF) 分析.
- 電圧の安定性限界の評価,最大負荷率のマージン,および弱いバスの識別.
- 様々な風速 (低,中,高) とグリッド強度 (弱い,強い) のシミュレーション
主要な成果:
- 風力発電の浸透率が増加すると,最大負荷点と電圧安定率は,補償なしで大幅に低下します.
- 戦略的な場所にSVCを配置すると,電圧プロファイルが大幅に改善され,システムの負荷限界が増加します.
- IEEE 57バスシステムでの検証は,エチオピアのグリッドに適用する前にSVCの有効性を確認しました.
結論:
- SVCは,エチオピアの電力網への風力エネルギーの統合によって引き起こされる電圧の不安定性を軽減するのに有効です.
- この研究では,SVCは風力発電の安全で信頼性の高い統合を可能にし,ネットワーク全体の安定性を高めることを示しています.
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