配网选线保护与故障定位

目 录 前 言 第1章 谐振接地配电网单相接地故障暂态过程分析········································ 1 1.1 自动跟踪消弧线圈补偿特性···································································· 2 1.2 虚幻接地与单相接地故障的辨识···························································· 7 1.3 接地故障电流暂态特性分析·································································· 19 1.4 单相接地故障电磁暂态仿真分析·························································· 23 1.5 零模电流暂态过程················································································ 28 1.6 本章小结······························································································ 29 第2章 配电网故障选线················································································ 31 2.1 补偿接地电网高阻故障检测算法·························································· 33 2.2 利用故障电流突变方向的故障选线······················································ 36 2.3 基于零模电流幅值频率特性的故障选线·············································· 61 2.4 基于分形和小波能量相对熵的综合选线·············································· 67 2.5 利用零模电流S变换偏斜度的故障选线·············································· 77 2.6 基于相电流突变量的故障选线······························································ 82 2.7 利用无功检测的选线方法······································································ 91 2.8 利用测后模拟原理的故障选线······························································ 97 2.9 利用零序瞬时功率曲线进行PCA聚类分析的选线方法······················ 101 2.10 基于融合原理的故障选线·································································· 106 2.11 本章小结···························································································· 128 第3章 配电网单相接地行波及暂态量保护················································ 129 3.1 基于暂态能量的单相接地保护···························································· 130 3.2 基于零模电压行波小波系数相关分析的单相接地保护························ 132 3.3 基于零模电压电流工频幅变变量直线拟合的单相接地保护················ 134 3.4 基于电压电流SOD变换的单相接地保护············································ 137 3.5 基于方向电压行波积分值比较的单相接地保护···································· 139 3.6 基于方向行波积分值比较原理的暂态量保护········································ 141 3.7 基于PCA聚类分析的暂态量保护························································ 143 3.8 本章小结······························································································ 151 · vii · 配电网线保护与故障定位 第4章 直配线路故障定位 ……………………………………………………………………………. 152 4.1 直配线路接地故障暂态行波理论分析 …………………………………………………….. 152 4.2 直配架空线路故障暂态行波仿真分析 …………………………………………………….. 156 4.3 接地故障暂态行波在采用模极大值标定下的波速讨论 ……………………………. 164 4.4 直配架空馈线单端行波故障定位 ……………………………………………………………. 175 4.5 直配线路行波故障频谱分析及差模定位法 ……………………………………………… 194 4.6 线缆混合直配线路单端故障定位 ……………………………………………………………. 210 4.7 线缆混合配线路双端行波故障测距 ………………………………………………………… 250 4.8 本章小结 ……………………………………………………………………………………………….. 255 第5章 多分支辐射状配网故障定位 ……………………………………………………………… 257 5.1 辐射网架空馈线行波传输特性及其频率特性分析 …………………………………… 257 5.2 基于频率的辐射网架空馈线多相接地故障定位 ………………………………………. 276 5.3 基于线、零模波到时差的辐射网单相接地故障行波定位 ………………………… 279 5.4 基于波形相似性的故障测距N-N算法 ……………………………………………………… 287 5.5 多分支辐射状配网故障定位方法的有效性分析 ………………………………………. 290 5.6 本章小结 ……………………………………………………………………………………………….. 296 第6章 基于故障行波沿线暂波突变分布特性的配电网故障定位 …………………….. 297 6.1 利用故障行波沿线突变分布特性的直配线路故障定位原理分析 ……………….. 298 6.2 基于沿线方向行波分解及行波突变距离标定的直配架空线故障测距 ……….. 309 6.3 基于沿线方向行波分解及距离标定的线缆混合直配线路行波故障测距 ……. 323 6.4 辐射状配网下游故障支路测距的识别 …………………………………………………….. 342 6.5 基于行波信息逐段传递和故障段搜索的辐射网行波测距 ………………………… 345 6.6 基于最长路对其下游馈线具有行波信息全覆盖特性的波速测距 ……………….. 358 6.7 本章小结 ……………………………………………………………………………………………….. 375 第7章 配网短路点定位的诊注入法 ……………………………………………………………… 377 7.1 架空馈线多参数测试 ……………………………………………………………………………… 378 7.2 直配线网相间短路点定位 ………………………………………………………………………. 379 7.3 直配线网相间短路点定位精度讨论 ………………………………………………………… 381 7.3.1 相位测量误差 …………………………………………………………………………………. 381 7.3.2 电压幅值测量误差 ………………………………………………………………………….. 384 7.4 直配线单相接地短路点定位 …………………………………………………………………… 386 7.5 直配线单相接地短路点定位精度讨论 …………………………………………………….. 389 目 录 · ix · 7.5.1 相位测量误差 ……………………………………………………………… 389 7.5.2 电压幅值测量误差 ………………………………………………………. 391 7.6 辐射状配电线单相接地短路点定位 …………………………………. 394 7.6.1 辐射型分布参数网络化简算 ………………………………………… 396 7.6.2 单相短路点定位方程 …………………………………………………… 396 7.6.3 单相短路点定位方程输入参数 …………………………………….. 398 7.7 双端激励故障测距方法 …………………………………………………… 399 7.8 馈线短路点定位的测后模拟法 ………………………………………… 404 7.9 本章小结 ………………………………………………………………………… 406 参考文献 ……………………………………………………………………………….. 408