高压电气设备的检修与试验

目 录 绪 论 ································ ································ ································ ·········· 1 第一章 电气绝缘基本知识 ································ ································ ··············· 2 第一节 气体电介质的极化 、电导和损耗 ································ ························ 2 第二节 电介质的游离 ································ ································ ·············· 12 第三节 气体的击穿过程 ································ ································ ··········· 15 第四节 液体的击穿机理 ································ ································ ··········· 19 第五节 固体电介质的击穿机理 ································ ································ ··· 21 第六节 沿面放电 ································ ································ ···················· 24 思考和练习题 ································ ································ ······················· 37 第二章 高压电气设备绝缘预防性试验方法 ································ ·························· 39 第一节 电气设备预防性试验的种类与意义 ································ ···················· 39 第二节 绝缘电阻、吸收比试验 ································ ································ ··· 43 第三节 直流泄漏电流试验 ································ ································ ········ 46 第四节 介质损耗角正切值试验 ································ ································ ··· 49 第五节 局部放电试验 ································ ································ ·············· 53 第六节 工频耐压试验 ································ ································ ·············· 58 第七节 直流耐压试验 ································ ································ ·············· 63 第八节 冲击耐压试验 ································ ································ ·············· 68 思考和练习题 ································ ································ ······················· 78 第三章 电力变压器检修与试验 ································ ································ ········ 79 第一节 电力变压器绝缘知识 ································ ································ ······ 79 第二节 油浸式电力变压器检修周期和项目 ································ ···················· 83 第三节 电力变压器交接性试验项目及标准 ································ ···················· 96 第四节 电力变压器预防性试验项目及标准 ································ ·················· 106 思考和练习题 ································ ································ ····················· 123