摘要
发电机定子及出线套管处绝缘引起的故障占发电机总故障的40%以上,发电机内部绝缘发生局部放电是造成绝缘损坏的重要原因,常规局部放电检验手段是在机组停机检修时进行发电机定子绕组局放试验,但电厂机组停机检修周期较长,不能及时发现发电机内部的缺陷,目前最好的解决方法是采用发电机局放在线监测装置。本文分析了发电机局放在线监测装置原理以及在某发电厂的应用情况,该装置能够实时监测发电机局放现象,保证电厂安全稳定运行。
The insulation fault of generator stator and outlet bushing is more than 40% of the total accident. Partial discharge of generator internal insulation is an important cause of insulation damage. Conventional partial discharge test method is used to test the generator stator winding partial discharge test during the period of unit maintenance, but it can not found the generator＇s internal defects timely. Principle of partial discharge on-line monitoring device is given to safety and security of the power plant.
出处
《内蒙古电力技术》
2015年第02S期53-55,共3页
Inner Mongolia Electric Power
关键词
发电厂
局部放电
发电机局放在线监测装置
绝缘耦合
电容器
噪声分离
power plant
partial discharge
partial discharge on-line monitoring device
insulation coupling
capacitor
noise separation
