作者：蒋远东1, 陈庆国2, 王发兴3, 谢东1
作者单位：1. 广西电网公司钦州供电局, 广西钦州 535000;
2. 哈尔滨理工大学, 黑龙江哈尔滨 150040;
3. 广西电网公司梧州供电局, 广西梧州 543002
关键词：在线监测; 局部放电; 电流传感器; 大型发电机; 传感器
摘要：
局部放电测量是诊断定子绕组绝缘最为有效的方法的之一。结合以往的科研实践,且基于磁耦合原理及小波去噪技术,研制出了一套大型发电机定子绕组局部放电在线监测系统,该系统具有工作频带宽、抗干扰能力强、灵敏度高等特点。采用高压电机定子绕组对该系统进行测试,测试结果表明,该系统能准确提取出局部放电脉冲的特征量,满足定子绝缘状况诊断的要求。
On-line PD monitoring system development for large generator stator
JIANG Yuan-dong1, CHEN Qing-guo2, WANG Fa-xing3, XIE Dong1
1. Qinzhou Power Supply Bureau, Guangxi Power Grid Corporation, Qinzhou 535000, China;
2. Harbin University of Science and Technology, Harbin 150040, China;
3. Wuzhou Power Supply Bureau, Guangxi Power Grid Corporation, Wuzhou 543002, China
Abstract: On-line partial discharge (PD) monitoring is one of the most effective methods for winding insulation diagnosis of large generator stator. According to the past research, magnetic coupling mechanism and wavelet denoising technology, a new type on-line PD monitoring system for winding insulation diagnosis of large generator stator was developed. The system has characteristics such as wider band, stronger anti-jamming, higher sensitivity and so on. With high stator winding, the system was tested, and the test results showed that it could extract the characteristic of PD pluses accurately and could satisfy the requirements of stator insulation diagnosis.
Keywords: On-line monitoring; Partial discharge; Current sensor; Large generator; Sensor
2008, 34(2): 127-130 收稿日期: 2007-9-4;收到修改稿日期: 2007-11-17
基金项目:
作者简介: 蒋远东(1982-),男,硕士,主要从事高压设备绝缘诊断技术工作。
参考文献
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