去极化电流法诊断10kV电缆绝缘缺陷的可行性研究..doc

去极化电流法诊断10kV电缆绝缘缺陷的可行性研究 张云波1 ，孙国凯2 沈阳农业大学，沈阳 110000 2. 沈阳农业大学，沈阳 110000） 简介：1，张云波，男，(1990.1—)汉族，籍贯：内蒙古赤峰市，学历：在读硕士，主要研究方向：特高压 2, 孙国凯，男，（1963.4—）汉族，籍贯：辽宁省营口市，学历：本科，职称：教授，主要研究方向：地方电力系统及自动化 摘要：10kV电力电缆是我国供配电网络中常见的组成部分，其具有安装简单、电气性能优良等特点，广泛应用于城市的供配电网中。绝缘性能是影响10kV电力电缆以及供配电网运行可靠性的重要指标，因此采用科学、快速、有效的诊断方法判断电缆的绝缘性能至关重要。去极化电流法（PDC）是一种基于介电响应原理的电缆绝缘性能诊断方法，已经在电力电缆的绝缘缺陷诊断中得到应用，为了探讨其用于诊断10kV电缆绝缘缺陷的可行性，本文从电力电缆缺员性能的检测方法入手，分析去极化电流法（PDC）的原理与实验设计，通过对运行电缆的电流检测，通过分析10kV电缆的去极化电流曲线判断电缆的老化状态，以期为10kV电力电缆的绝缘性能诊断提供参考，保证10kV电缆的供电可靠性，保证电力系统运行的可靠性，促进经济的快速发展。 关键词：去极化电流；电力电缆；绝缘缺陷；可行性 Feasibility study diagnosis depolarization current law 10kV cable insulation defects Zhang Yunbo1,Sun Guokai2 （1. Shenyang Agricultural University， Shenyang 110000 2. Shenyang Agricultural University， Shenyang 110000） Abstract : 10kV power cable is the supply and distribution network in the common part of which has a simple installation , excellent electrical performance characteristics, widely used for distribution in the city . Insulation performance is affecting 10kV power cable and an important indicator of the reliability of the power grid for the feature , so a scientific , rapid and effective diagnostic method to determine critical to the performance of the cable insulation . Depolarization current method (PDC) is a response to the principles of the cable dielectric insulation diagnostic method based insulation has been applied in the diagnosis of defective power cables , in order to investigate the feasibility for the diagnosis 10kV cable insulation defects , the paper detection power cable from lack of staff performance , analyzes depolarization current method (PDC) principles and experimental design , through the current detection operation of the cable , through the analysis of 10kV cable depolarizing current curve determine the aging state of the cable, insulation performance diagnostics with a view to 10kV power cables to provide a reference , to ensure reliability of power supply 10kV cable , ensure the