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超音波に基づくスイッチギアにおける複数の局所放電源の局所化に関する研究と実施

Dijian Xu¹, Yao Huang¹, Apurba Deb Mitra²

¹School of Electronic and Electrical Engineering, Chongqing University of Science & Technology, Chongqing 401331, China.

Sensors (Basel, Switzerland)

|February 13, 2026

まとめ

本研究は,高圧スイッチギアにおけるオンライン,マルチソースの部分放電局在化のための超音波方法を導入しています. この新しいアプローチは,より優れた故障検出のための精度と騒音削減を向上させます.

科学分野:

電気工学電気工学とは
アコースティック・シグナル処理
高圧技術の高圧技術について

背景:

現在のスイッチ装置の部分放電検出は主にオフラインであり,複数の放電源の同時監視を制限しています.
既存の方法は,信号と騒音の比率が低い環境では,時間差の正確な取得に苦労しています.
複数の部分放電源の位置づけは,従来の到着時間差 (TDOA) アルゴリズムに課題をもたらす.

研究の目的:

高圧スイッチ装置における部分放電故障のオンライン局所化のための超音波技術の適用を調査する.
時間差の推定とソース分離の精度を向上させるための高度なアルゴリズムを開発する.
複数の部分放電源を同時に位置づけることができるように.

主な方法:

部分放電信号の背景騒音軽減のために,ソフトとハードのフィルタリング技術が採用されました.
到着時間差 (TDOA) に基づく一般化された立方相関アルゴリズムは,時間差取得の精度を高めるために開発されました.
シングルチャネル信号ブラインドソース分離,シンギュラリティスペクトル分析,独立コンポーネント分析 (ICA) を用いて,複数の放電源を特定・分離した.
複数のソースの座標を決定するために,無秩序な座標選択法が提案されました.

主要な成果:

騒音軽減方法は,重要な部分放電信号を保存しながら,干渉を効果的に除去しました.
改良された汎用立方相関アルゴリズムは,他の相関アルゴリズムと比較して,干渉に対する優れた抵抗性と17-68mmのローカライゼーションエラーの減少を示した.
このシステムは,複数の放電源を 88% の精度で特定し,その数値を特定することができました.

結論:

超音波技術は,高度な信号処理技術と組み合わせて,高電圧スイッチギアにおけるオンライン,マルチソース部分放電の局所化のための実行可能なソリューションを提供します.
開発された一般化された立方相関アルゴリズムとICAベースのソース分離は,局所化の正確性と信頼性を大幅に改善します.
このアプローチは,以前に改善された方法よりも大幅な進歩であり,電気インフラストラクチャの安全性とメンテナンスを強化します.

キーワード:

遅延時間推定の推定複数の局所的な放電電力の位置付け部分放電についてです.スイッチギアススイッチギアス

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