检测劣质绝缘子的新方法——敏感绝缘子法  

SENSITIVE INSULATOR METHOD—A NEW METHOD TO DETECT THE FAULTY INSULATOR

作　　者：安玲[1] 江秀臣[1] 朱宇[1] 韩振东[1] 陈亚珠[1] 程剑 

机构地区：[1]上海交通大学电力学院,上海200030 [2]山东烟台电业局,山东烟台264001

出　　处：《中国电机工程学报》2002年第9期108-112,共5页Proceedings of the CSEE

摘　　要：提出了一种新的判断方法——敏感绝缘子检测方法。该方法是在电压分布法的基础上开拓出来的新方法,基本原理是劣质程度不同的绝缘子,在绝缘子串中处于不同位置时,不但其本身承受的分布电压会发生变化,还会影响其它绝缘子,其中存在对此影响反映比较敏感的绝缘子,称为敏感绝缘子。试验证明,当存在劣质绝缘子,特别是存在零值绝缘子时,不论劣质绝缘子处于什么位置,敏感绝缘子的分布电压变化从总体上都比较明显。因此,仅测量敏感绝缘子上的分布电压就可以判断该串是否存在劣质绝缘子。从而减轻了工作量,提高了工作效率,成为适应电力系统发展的新方法。A new method called sensitive insulator method is introduced in detail, which is developed on the basis of the distribution voltage method. If there is a faulty insulator in the strings, not only its own distribution voltage but also the other insulators?will change to some degree, among which, insulators which are more sensitive to different location are called sensitive insulators. It is proved that the forth insulator near the earth terminal is the most sensitive insulator to the faulty degree, no matter where the faulty insulator locates in the strings. Therefore measuring this insulator only can determine whether there is a faulty insulator or not. By this method, the workload can be decreased greatly.

关 键 词：检测 劣质绝缘子 敏感绝缘子法 相对差异值 分布电压 输电线路 

分 类 号：TM216[一般工业技术—材料科学与工程] TM726[电气工程—电工理论与新技术]