Ultraviolet Image Facular Area Vary Characteristic and Apparent Discharge Estimation of Suspension Composite Insulator Corona

CHEN Lei 1; ZHOU Fang-rong 1; MA Yi 1; DENG He-ming 2; WANG Sheng-hui 3

doi:10.13296/j.1001-1609.hva.2013.08.012

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Ultraviolet Image Facular Area Vary Characteristic and Apparent Discharge Estimation of Suspension Composite Insulator Corona

更新时间：2025-04-26

- Ultraviolet Image Facular Area Vary Characteristic and Apparent Discharge Estimation of Suspension Composite Insulator Corona
- High VoltageApparatus Vol. 49, Issue 8, Pages: 60-67(2013)
- 作者机构：
  
  1. 云南电力试验研究院(集团)有限公司电力研究院
  2. 国网电力科学研究院武汉南瑞有限责任公司
  3. 华北电力大学
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2013.08.012
  CLC： TM216
- Published：2013
- 稿件说明：
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[1]陈磊,周仿荣,马仪,邓鹤鸣,王胜辉.悬式复合绝缘子电晕放电紫外图像光斑面积[J].高压电器,2013,49(08):60-67.

CHEN Lei 1, ZHOU Fang-rong 1, MA Yi 1, et al. Ultraviolet Image Facular Area Vary Characteristic and Apparent Discharge Estimation of Suspension Composite Insulator Corona[J]. High voltageapparatus, 2013, 49(8): 60-67.
[1]陈磊,周仿荣,马仪,邓鹤鸣,王胜辉.悬式复合绝缘子电晕放电紫外图像光斑面积[J].高压电器,2013,49(08):60-67. DOI： 10.13296/j.1001-1609.hva.2013.08.012.

CHEN Lei 1, ZHOU Fang-rong 1, MA Yi 1, et al. Ultraviolet Image Facular Area Vary Characteristic and Apparent Discharge Estimation of Suspension Composite Insulator Corona[J]. High voltageapparatus, 2013, 49(8): 60-67. DOI： 10.13296/j.1001-1609.hva.2013.08.012.

摘要

笔者采用数字图像处理算法提取了紫外图像中的放电光斑区域并定义了"光斑面积"参数

试验研究了10、35、110 kV复合绝缘子高压侧电晕放电时的紫外图像和放电量的变化特性

得到了光斑面积与视在放电量之间的关系曲线。获得了光斑面积随仪器增益和观测距离变化时的试验数据并利用MATLAB的CFTOOL工具箱函数进行了拟合分析

研究表明光斑面积与增益之间近似满足于指数变化规律

光斑面积与距离之间近似满足于幂函数变化规律。在此基础上论文给出了50%、60%、70%、80%4种增益

不同放电强度下的光斑面积随距离的变化曲线

利用最小二乘支持向量机（least squares support vector machine

LS-SVM）回归算法建立了放电量强度预测模型

该模型具有良好的预测精度。

Abstract

In this paper

the discharge facular region in the ultraviolet（UV） images was extract with digital image processing algorithm

and the facular area parameter was defined

in the high voltage laboratory

the corona discharge character at the high voltage side of 10 kV

35 kV and 110 kV composite insulator were studied

the relation curves of facular area and apparent discharge was obtained.The corresponding experiment data was fitted with the CFTOOL function toolbox in MATLAB

research showed that the facular area to gain had approximate exponential relationship

and the facular area to the observe distance had approximate power function relationship.On that basis

this paper established the curves of facular area with the distance under different discharge intensity with the gain was 50%

60%

70% and 80%

then a discharge quantification estimation model is established with the LS-SVM（least squares support vector machine

LS-SVM） regression algorithm

testing showed that it has good prediction accuracy.

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