摘要
在变压器各类故障中,最常见的就是绕组匝间短路。目前,主要是通过变压器油中溶解气体的在线监测作为监测变压器运行的主要手段。通过分析找到了变压器在线监测特别是针对绕组在线监测的新特征量:功率损耗。在此基础上,探讨了实现变压器绕组在线监测的可能性,再结合油气量分析提出了相应的监测判断流程,初步探讨了新的电力变压器在线监测系统和变压器状态评估的框架。
In various faults of transformer, turn- to- turn short- circuit of winding occurs mostly. At present, the online monitoring of dissolved gas in transfomer oil is the main means to monitor the operation of transformer. Through the analysis, power loss as a new eharacteristic quantity has been found, especially for online monitoring of winding. Based on it, the possibility to realize the online monitoring of transformer winding is discussed, the corresponding flow of monitoring and determination is put forward together with the analysis of oil and gas content, and a new online monitoring system of power transformer and the block diagram of transformer evaluation are discussed preliminarily.
出处
《四川电力技术》
2005年第5期10-12,47,共4页
Sichuan Electric Power Technology
关键词
电力变压器
在线监测
匝间短路
功率损耗
状态评估
power transformer
online monitoring
turn- to- turn short- circuit
power Ices
state evalustion
