介质耗损因数tgδ的西林电桥测试法及其改进  

Dielectric Loss Factor(tgδ) of the Test and Improvement of the Resistant Electric Bridge

作　　者：董海霞 

机构地区：[1]商丘技师学院电气应用技术系,河南商丘476000

出　　处：《商丘职业技术学院学报》2009年第5期75-77,共3页JOURNAL OF SHANGQIU POLYTECHNIC

摘　　要：介质损耗因数tgδ是反映高电压电气设备绝缘性能的一项重要指标,通过测试tgδ可以反映出绝缘的一系列缺陷.电力设备在运行过程中,要定期对tgδ进行测试,若达不到一定标准,将不能继续使用该电力设备.长期以来,tgδ的测量是通过西林电桥实现的,但它的测试程序复杂,操作量大,测试时间长,并易受人为因素的影响,这些都限制了西林电桥在电力系统中的应用.本文对西林电桥测试作了一定的改进,解决了测试时对绝缘和抗干扰能力的要求.The dielectric loss factor tgδ reflects insulated high - voltage electrical equipment as an important indicator of performance, and passing the test tgδ reflects a series of defects in insulation, electrical equipment during operation. Therefore, it is necessary to periodically test tgδ, having no certain standard, we will not be able to continue to use the electrical equipment. After a long period of time, tgδ measurement is achieved as a resistant bridge, but it is tbe complexity of testing procedures, operation of a large amount of test time, and vulnerable to the impact of human factors, which are resistant bridge limits in power system applications. In this paper, the bridge test of resistant improvements is made to address the testing of insulation and anti - jamming capabilities.

关 键 词：介质耗损因数tgδ 西林电桥 改进措施 

分 类 号：TM938[电气工程—电力电子与电力传动]