中国特高压交流瓷外套避雷器的研制与型式试验

Summary and Conclusion of Chinese Ultra High Voltage AC Porcelain Housed Metal Oxide Surge Arrester's Development and Type Test

1000kV特高压交流瓷外套金属氧化物避雷器(MOA)是近几年国内避雷器研究最重要的成果,由于其采用4柱电阻片并联结构且其总高达十几m,其性能要求和试验方法与传统750kV及以下的MOA有很大不同。型式试验(设计试验)是为验证产品设计能否满足技术规范的全部要求所进行的试验。全面介绍了国家电网1000kV特高压交流示范工程所用MOA的技术规范、试验方法、以及各制造厂产品型式试验结果,重点对试验方法的合理性进行了分析探讨,对1000kV瓷套型MOA的标准制定工作提出了一些合理化建议。

1000 kV ultra high voltage （UHV） AC metal oxide surge arresters （MOA） with porcelain housings as the first product in the international is one of the most important equipment for 1000 kV UHV AC systems. As a result of use four-post resistors parallel structure and its total height exceeds 10 m,its performance requirements and test methods is very different from the traditional 750 kV and below MOA. Type test （design test） is to verify the product design can meet the technical specifications for all the test requirements. This article details the state grid 1000 kV UHV AC demonstration project MOA technical specifications ,test methods,the type test result of all factory products,focus on the reasonableness of the test methods ,put forward a series of rationalization proposals for its standard-setting work.