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文章摘要
基于阻抗谱的电力电缆绝缘缺陷诊断函数故障定位与状态评估方法研究
Research on fault location and state evaluation method of diagnostic function for power cable insulation defects based on the impedance spectrum
Received:January 29, 2023  Revised:March 01, 2023
DOI:j.issn1001-1390.2025.07.025
中文关键词: 绝缘缺陷检测  电力电缆阻抗谱  积分变换分析  分布参数模型
英文关键词: insulation defects detection, impedance spectrum of power cable, integral transformation analysis, distributed parameter model
基金项目:浙江省电力公司科技项目资助(项目编号202210118)
Author NameAffiliationE-mail
SI Jie Zhejiang Tusheng Power Transmission and Transformation Engineering Co., Ltd. 77346194@qq.com 
CHEN Zhi Zhejiang Tusheng Power Transmission and Transformation Engineering Co., Ltd. 1579645801@qq.com 
ZHAO Jian Zhejiang Tusheng Power Transmission and Transformation Engineering Co., Ltd. 1127117028@qq.com 
ZHOU Yuxiao Zhejiang Tusheng Power Transmission and Transformation Engineering Co., Ltd. 398126460@qq.com 
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中文摘要:
      在电力电缆绝缘缺陷检测工作中,绝缘缺陷的准确定位和程度评估对计划性检修工作的实施至关重要。文中以XLPE同轴电缆为例,基于传输线分布参数模型和积分变换理论,用e-2γx函数系对电力电缆阻抗谱函数进行空间域上的分解,提出了一种绝缘缺陷诊断函数。通过研究绝缘缺陷与绝缘缺陷函数的关系,针对电力电缆L/C型绝缘缺陷的定位和程度评估,提出了一种绝缘缺陷检测方法。通过仿真算例验证了该检测方法的可行性,并通过仿真结果分析了其缺陷定位和程度评估的准确性。
英文摘要:
      In the detection of power cable insulation defects, the accurate location and degree evaluation of insulation defects are crucial to the planned overhaul work of power cable. Taking XLPE coaxial cable as an example, in this paper, based on the transmission line distribution parameter model and the integral transformation theory, the impedance spectrum function of the power cable is decomposed through the e-2γx function system in the space domain, and a diagnostic function for insulation defects is proposed. By investigating the relationship between insulation defects and insulation defect function, an insulation defects detection method is proposed for the location and degree evaluation of L/C type insulation defects in power cable. The feasibility of the proposed detection method is verified by a simulation example, which can accurately locate and evaluate the degree of the insulation defects.
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