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温湿度对开关柜局部放电物理信号影响研究
Research on the Influence of Temperature and Humidity on the Physical Signal of Partial Discharge of Switchgear
- 默认刊物名称 2025年
- 作者机构：
1.成都理工大学,四川省成都市610059
2.四川大学 电气工程学院,四川省成都市610065
- 作者简介：
- 基金信息：国家自然科学区域创新发展联合基金重点支持项目(U19A2080);四川省科技计划(2023NSFSC0830);四川省电力公司科技项目(521903230001)
DOI：
中图分类号： TM852;TM835.1收稿日期：2024-09-11，
修回日期：2024-11-05，
录用日期：2024-11-18，
- 稿件说明：
移动端阅览
蔡乐辉, 曾潮旭, 杨森, 等. 温湿度对开关柜局部放电物理信号影响研究[J/OL]. 默认刊物名称, 2025.
CAI Lehui, ZENG Chaoxu, YANG Sen, et al. Research on the Influence of Temperature and Humidity on the Physical Signal of Partial Discharge of Switchgear[J/OL]. Moren journal, 2025.
摘要
局部放电是开关柜发生绝缘故障的主要原因和前期阶段，准确有效地对局部放电产生的特征信号进行监测和分析是保障设备安全运行的关键。针对广泛运用的超声波和地电波检测法在实际检测过程中忽略的环境温湿度因素，本文设计制作了四种典型绝缘缺陷模型，在不同温湿度条件下测量局部放电信号并进行汇总分析，研究了环境温湿度对不同类型局部放电起始和熄灭电压以及超声波与地电波信号的影响特征。结果表明，温度升高针板缺陷超声波信号和悬浮缺陷地电波信号增强，40-60℃时针板缺陷熄灭电压与沿面、悬浮和气隙缺陷起始熄灭电压下降明显。相对湿度升高将导致沿面缺陷超声波信号和气隙放电地电波信号增强，相对湿度60-100%时沿面缺陷起始电压和悬浮缺陷起始熄灭电压下降明显。
Abstract
Partial discharge is the main reason and early stage of insulation failure in the switchgear
and accurate and effective monitoring and analysis of the characteristic signals generated by partial discharge is the key to ensure the safe operation of the equipment. In view of the environmental temperature and humidity factors that are ignored in the detection process by the widely used ultrasonic and geoelectric wave detection methods
four typical insulation defect models are designed and fabricated
and the partial discharge signals are measured and summarized under different temperature and humidity conditions
and the influence characteristics of ambient temperature and humidity on the starting and extinguishing voltages of different types of partial discharge and ultrasonic and geoelectric signals are studied. The results show that the ultrasonic signal of the needle plate defect and the ground radio signal of the suspension defect are enhanced when the temperature increases
and the extinguishing voltage of the needle plate defect and the initial extinguishing voltage of the surface
suspension and air gap defects decrease significantly when the temperature is 40-60°C. The increase of relative humidity will lead to the enhancement of ultrasonic signals and air-gap discharge ground signals of surface defects
and the initial voltage of surface defects and the initial extinguishing voltage of suspension defects will decrease significantly when the relative humidity is 60-100%.
关键词
Keywords
references
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