基于光传感技术的特高压直流输电线路污秽度在线监测

Atmospheric Contamination Parameters Measurement on ±800kV Transmission Line

为研究特高压直流输电线路积污特性,准确设计线路绝缘配置。本文研究了光传感技术测量输电线路绝缘子盐密的方法,设计制作了输电线路盐密在线监测系统。该系统由安装于线路杆塔的数据检测终端(ODU)以及监测中心组成,可实时监测终端所在环境下的气象参数和污秽度,方便工作人员了解线路积污情况。±800 kV楚穗直流输电工程已安装三套数据检测终端,分布在广州、南宁、曲靖三地。分析监测数据可知:气温、湿度受经纬度影响,其中纬度相同的地区气温、湿度大体一致;线路绝缘子污秽度一定程度上受气温、湿度的影响。

In order to analyze the characteristics of pollution deposits of UHV DC transmission line and design insulation configuration,this paper studied the method to measure the ESDD of transmission line using the optical sensor.Based on this method,the atmospheric contamination parameters measurement system was built.This system consists of data detection terminal(ODU)and monitoring center,and the data detection terminal was installed on the transmission tower.This system can monitor the meteorological parameters and pollution level,and the staff could understand the situation of contamination.There are three data detection terminals installed on ±800 kV Chu-Sui DC line.Analysis of monitoring data shows that: temperature and humidity are impacted by latitude and longitude,and the temperature and humidity would be much the same in case that the two places are at the same latitude;the insulator contamination is impacted of temperature and humidity to a certain extent.