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电网技术  2011 

750kV高压电抗器笼式出线结构均压特性研究

, PP. 232-236

Keywords: 高压电抗器,笼式出线,电场分布,电晕,屏蔽环,有限元

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Abstract:

750kV变电站内高压电抗器多采用笼式分裂导线与管母连接,该结构形式较为复杂,容易发生严重的电晕放电,不仅造成功率损耗,而且给周围环境带来可听噪声和无线电干扰,因此有必要对高压电抗器出线结构采取一定的防晕措施。本文采用三维有限元法,对750kV变电站高压电抗器出线回路进行了仿真计算,得出了其三维电位及电场分布规律,研究了笼式出线各分裂导线表面的电场分布情况,分析了不同屏蔽环配置对其分布的影响,提出了高压电抗器笼式出线结构的屏蔽环配置建议。本文的研究成果有效的改善了750kV高压电抗器笼式出线结构的均压特性,已在750kV电站的设计和建设中得到应用。

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