李鹏;李志兵;孙倩;张乔根;颜湘莲;孙建涛;

• 1:电力设备电气绝缘国家重点实验室(西安交通大学)
• 2:中国电力科学研究院

摘要(Abstract)：

气体绝缘金属封闭输电线路(gas-insulated metal-enclosed transmission line,GIL)是架空输电方式在地理或环境条件受限情况下的重要补充,在特高压工程中具有较好的应用前景。研究特高压GIL的绝缘设计关键技术,包括典型绝缘结构型式、间隙设计与优化、绝缘子设计与优化、金属微粒抑制和混合气体方案探讨。提出了GIL间隙设计的原则和电场控制值,优化设计了电连接的两段圆弧连接式倒角结构,较好地满足了电场控制值要求。提出了GIL绝缘子设计的原则和电场控制值,优化设计了一种屏蔽电极结构和绝缘子形状综合优化的盆式绝缘子结构,全面满足了电场控制值要求。分析了GIL中金属微粒的运动特性,指出需在绝缘子附近装设微粒陷阱,并开展金属微粒老练试验。分析了SF6/N2混合气体GIL的绝缘特性、设计原则及电场控制值,指出最优混合比为20%。所得研究结果有助于提升我国特高压GIL设计技术水平,促进设备研制工作。

关键词(KeyWords)： 特高压;气体绝缘金属封闭输电线路;绝缘设计;金属微粒;混合气体

Abstract:

Keywords:

基金项目(Foundation): 国家电网公司科技项目(“特高压交流GIL试验线段研制及带电考核研究”;“特高压气体绝缘金属封闭输电线路(GIL)工程应用可行性研究”)~~

作者(Author): 李鹏;李志兵;孙倩;张乔根;颜湘莲;孙建涛;

Email:

DOI: 10.13335/j.1000-3673.pst.2015.11.044

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