金属氧化物避雷器泄漏电流的PSCAD仿真评估

Leakage current of metal oxide lightening arrester with PSCAD simulation

随着时代的发展,金属氧化物避雷器(简称MOA)在技术性能上的优异表现,以及稳定的可靠性渐渐取代了其它类型的避雷器,成为大家的新宠。并且逐渐成为了电力系统中的换代保护设备。MOA因为没有放电间隙,而其中的核心部件氧化锌电阻片长期在电压下运作,在MOA各个串联电阻片中泄漏电流不断流过,而泄漏电流又被MOA热稳定和电阻片的老化程度所决定。所以监测MOA运行中的泄漏电流,正确判断其影响是非常必要的。为了模拟这个动态的电流过程,我们找出了一些可靠模型。例如:IEEE、Pinceti-G ianettoni和Fernadez-Diaz都通过了PSCAD审查。而通过PSCAD仿真,提供了更加快捷、直观的数据。

With the development of the times, metal oxide lightning arrester （ hereinafter referred to as the MOA） in the excellent technical performance, reliability and stability gradually replaced other types of lightning attester, become you to be bestowed favor on newly. And it gradually become the upgrading of the power system protection equipment. MOA has no discharge gap, and one of the core components of zinc oxide resistance for a long time in voltage operation, in which each series resistance MOA leakage current flows continuously, and leakage current and thermal stability and resistance by MOA of aging degree of the decision. So the operation of the monitoring MOA leakage current, judging correctly its influence is very necessary. In order to simulate the dynamic current process, the paper finds out some reliable model. For example： IEEE, Pinceti-G ianettoni and Fernadez-Diaz passed the PSCAD review. And through the PSCAD simulation for it provides the more shortcut, intuitive data.