Study of the Modified Method of Interference Error Caused by MOA Surface Contamination Based on Least Square Method

REN Minghui; WANG Xinlong; YANG Ke; FU Yincang

doi:10.13296/j.1001-1609.hva.2016.04.031

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Study of the Modified Method of Interference Error Caused by MOA Surface Contamination Based on Least Square Method

更新时间：2025-04-26

- Study of the Modified Method of Interference Error Caused by MOA Surface Contamination Based on Least Square Method
- High VoltageApparatus Vol. 52, Issue 4, Pages: 194-199(2016)
- 作者机构：
  
  1. 宝鸡供电局
  2. 渭南供电局
  3. 陕西磐隆电器工业设备集团有限公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2016.04.031
  CLC： TM862
- Published：2016
- 稿件说明：
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[1]任明辉,王新龙,杨可,付银仓.基于最小二乘法的MOA表面污秽干扰误差修正方法研究[J].高压电器,2016,52(04):194-199.

REN Minghui, WANG Xinlong, YANG Ke, et al. Study of the Modified Method of Interference Error Caused by MOA Surface Contamination Based on Least Square Method[J]. High voltageapparatus, 2016, 52(4): 194-199.
[1]任明辉,王新龙,杨可,付银仓.基于最小二乘法的MOA表面污秽干扰误差修正方法研究[J].高压电器,2016,52(04):194-199. DOI： 10.13296/j.1001-1609.hva.2016.04.031.

REN Minghui, WANG Xinlong, YANG Ke, et al. Study of the Modified Method of Interference Error Caused by MOA Surface Contamination Based on Least Square Method[J]. High voltageapparatus, 2016, 52(4): 194-199. DOI： 10.13296/j.1001-1609.hva.2016.04.031.

摘要

为了消除MOA表面污秽导致绝缘在线监测系统介质损耗角测量值产生的误差

文中用盐雾法对避雷器进行人工污秽试验

通过试验数据研究表面污秽程度与介质损耗角测量误差之间的关系

得出基于最小二乘法的介质损耗角修正方法。采用该方法可根据避雷器的污秽程度（等值盐密值）

得出介质损耗角修正值

使修正后的测量值更接近真实值。实验室试验结果表明

该方法对于表面污秽产生的测量误差

具有良好的抑制效果

显著提高了介质损耗角的测量精度。

Abstract

In order to eliminate the effect of MOA surface contamination on measured dielectric loss angle

the salt mist artificial pollution test is presented

by which the relation between surface contamination degree and dielectric loss angle measurement error can be investigated. By this functional relation

the dielectric loss angle modification method based on least square method is gained

and the modified value of dielectric loss angle can be gotten. The measured value by modified method is closer to the true value. This method is testified to have advantage of high precision for measuring dielectric loss angle and to have good effect on eliminating measurement error which is imposed by surface contamination through experiment in laboratory.

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