Garton效应对膜纸复合介质结构电容器损耗角正切测量的影响及其判断方法  

Influence of Garton Effect on Measurement of Loss Angle Tangent of Film-paper Composite Dielectric Capacitor and Its Judgment Method

作　　者：陈绪滨 CHEN Xubin(Generation Company of China Southern Power Grid Co.,Ltd.,Guangzhou 511400,China)

机构地区：[1]调峰调频发电有限公司,广州511400

出　　处：《电力电容器与无功补偿》2020年第3期67-70,共4页Power Capacitor & Reactive Power Compensation

摘　　要：膜纸复合介质结构电容器在电力系统中的应用越来越广泛,与传统油纸绝缘电容器相比,膜纸复合介质结构电容器的一大优势是其介质损耗角正切(tanδ)更小,在运行时其介质损耗也更小,但是由于Garton效应的存在,在进行介质损耗角正切试验分析时,可能会误判膜纸复合介质电容器的绝缘状态。本文首先简要阐述了Garton效应机理,并通过两个实例,分析了Garton效应对膜纸复合介质结构电容器损耗角正切的影响程度。笔者还就如何确定电容器是否发生Garton效应提出了建议。Film-paper composite dielectric capacitors are used more and more widely in power system swhich,compared with traditional oil-paper insulated capacitor,has such advantage as smaller dielectric loss tangent(tanδ)and smaller dielectric loss in operation.However,due to the existence of Garton effect,the insulation state of the film-paper composite dielectric capacitor may be misjudged when the dielectric loss tangent test is performed.In this paper,mechanism of Garton effect is described briefly and the influence of Garton effect on dielectric Dissipation factor measurement of Film-paper composite dielectric capacitor through is analyzed by two examples.The suggestion on how to determine the capacitor has Garton effect is proposed by the author.

关 键 词：GARTON效应 膜纸复合介质结构电容器 损耗角正切 试验电压 

分 类 号：TM53[电气工程—电器]