试验线段电晕测量技术及结果

Corona Measurement Technology and Result on Test Lines

为了配合对特高压试验线段电晕测量的研究,介绍了500kV试验线段电晕测量方法(包括测试仪器、信号取样方式、试验方法等问题)及结果并探讨了特高压试验线段电晕损失测试的几个关键问题。在国内有关输电线路电晕损失的各种论述中,基本上是引用国外的实测结果,一般认为国内从未对电晕进行过实测。早在80年代,作为武汉高压研究所承担的国家“六五”攻关项目的重要部分,即在500kV试验线段上对各种气象条件下,3种分裂方式导线的电晕损失和无线电干扰水平进行了测试。试验的目的是为了论证3×400分裂导线在技术、经济上的可行性,探索采用3×300分裂导线的可能性及技术条件,但这些结果从未公开发表;附录中给出了全部的电晕损失测量结果,其测试方法、结果等对特高压试验线段电晕损失的计算和实测亦有借鉴作用。

Corona measuring method and result of 500kV test line are introduced. On the basis of which, several important problem of corona loss measure of UHV test line is discussed and the measuring device, signal sampling mode and test method are introduced and analysed. Each kind of domestic documents about corona loss in transmission line quotes measurement result overseas basically. It is considered that there are no actual measurements at home. As early as the 80＇s, as an important part of national project ＂Six-Five＂ which our institute was responsible for, corona loss tests and radio interrupt level of three kinds of divided conductor have been done in 500kV test transmission line under each kinds of meteorological condition. The purpose of the experiment is to testify the effec tiveness of 3 400 divided wire in the field of technology and economy and to explore the possibility and technology condition of 3 300 divided wire. For certain reasons, these results have never been published in public. This article introduces and analyses the measuring method of corona loss of the test line briefly. All of the measuring result of corona loss is showed in annexe. The test method and result are useful as a reference to measuring and calculating the corona loss in extra-high voltage transmission line.