高压电器2017，Vol.53Issue(7)：159-166,8.DOI:10.13296/j.1001-1609.hva.2017.07.026
考虑气象环境影响的变压器套管介损监测预警策略
Early Warning Strategies of the Dielectric Loss Monitoring for Transformer Bushings Considering the Interference of the Meteorological Conditions
李峰 1孙旭东 2王红斌 1夏健3
作者信息
- 1. 广东电网有限责任公司电力科学研究院,广州510080
- 2. 西北电力设计院有限公司,西安710075
- 3. 西安交通大学电气工程学院,西安710049
- 折叠
摘要
Abstract
Dielectric loss on-line monitoring technology is an important means to detect bushing defects and avoid equipment accidents.However,the dielectric loss monitoring data could be affected by meteorological conditions,which might lead to false alarm.In order to reduce the false alarms caused by meteorological factors,this paper analyzes the correlation of porcelain cover oil-impregnated paper bushings' on-line monitoring data and corresponding meteorological data,and the results show that there is a significant positive correlation between the dielectric loss and rainfall,while the correlation with the temperature and humidity of the environment is not significant;to explain these phenomenon,the author constructs the equivalent circuit model of transformer bushing.Based on the correlativity of rainfall and the dielectric loss monitoring values,three early warning strategies have been proposed to eliminate the interference of rainfall on dielectric loss monitoring data,which are the inter-phase comparison method,the comprehensive method considering meteorological condition and the time-delay method,it is verified by the monitoring data of in operation bushings that the last two methods perform well in excluding the interference caused by rainfall.关键词
套管/介损/在线监测/预警策略/气象环境/降雨/温度/湿度Key words
bushing/dielectric loss/on-line monitoring/early warning strategy/meteorological condition/rainfall/temperature/humidity引用本文复制引用
李峰,孙旭东,王红斌,夏健..考虑气象环境影响的变压器套管介损监测预警策略[J].高压电器,2017,53(7):159-166,8.
