宋国兵;黄炜;王晓卫;常仲学;董继民;

• 1:西安交通大学电气工程学院

摘要(Abstract)：

不依赖电源特性,仅和线路拓扑有关的单端量全线速动保护是改善目前配电网薄弱保护配置的重要方案。针对配电线路多分支、损耗大的特点,设计了一种稳态分布补偿、暂态故障识别的边界元件,并基于边界元件提出了一种配电线路单端量全线速动方法。在配电线路各母线处并联电容作为边界元件,利用其对阶跃故障行波的反射作用,通过小波分析提取区内外故障时电压时域暂态能量差异,并综合故障前后电流幅值特点,实现全线速动保护方案配置。PSCAD仿真结果表明,该方法能够快速可靠的识别配电线路区内外相间故障,具有较高的耐过渡电阻能力;且边界电容值越大,越有利于区内外故障的识别,但电容的选取仍需考虑电网运行要求、经济性等因素的影响。

关键词(KeyWords)： 配电线路;边界设计;单端信息;时域分析;全线速动

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 宋国兵;黄炜;王晓卫;常仲学;董继民;

Email:

DOI: 10.13335/j.1000-3673.pst.2017.1609

参考文献(References)：

• [1]李斌,何佳伟,李晔,等.基于边界特性的多端柔性直流配电系统单端量保护方案[J].中国电机工程学报,2016,36(21):5741-5749.Li Bin,He Jiawei,Li Ye,et al.Single-ended protection scheme based on boundary characteristic for the multi-terminal VSC-based DC distribution system[J].Proceedings of the CSEE,2016,36(21):5741-5749(in Chinese).
• [2]Single-end time-domain transient electrical signals based protection principle and its efficient setting calculation method for LCC HVDC lines[J].IET Generation,Transmission&Distribution,2017:1233-1242.
• [3]高淑萍,索南加乐,宋国兵,等.利用单端电流的高压直流输电线路全线速动保护[J].中国电机工程学报,2012,32(7):107-114.Gao Shuping,Suonan Jiale,Song Guobing,et al.A novel whole-line quick-action protection principle for HVDC transmission lines using one-end currents[J].Proceedings of the CSEE,2012,32(7):107-114(in Chinese).
• [4]哈恒旭,张保会,吕志来.利用暂态电流的输电线路单端量保护新原理探讨[J].中国电机工程学报,2000,20(11):57-62.Ha Hengxu,Zhang Baohui,LüZhilai.A novel principe of non-unit protection based on transient components for EHV transmission lines[J].Proceedings of the CSEE,2000,20(11):57-62(in Chinese).
• [5]段建东,张保会,任晋峰,等.超高压输电线路单端暂态量保护元件的频率特性分析[J].中国电机工程学报,2007,27(1):37-43.Duan Jiandong,Zhang Baohui,Ren Jinfeng,et al.Single-ended transient-based protection for EHV transmission lines basic theory[J].Proceedings of the CSEE,2007,27(1):37-43(in Chinese).
• [6]张霖,吕艳萍.基于多分辨形态梯度的超高压输电线路无通信全线速动保护新方法[J].电网技术,2008,32(13):100-104.Zhang Lin,LüYanping.A new whole line non-communication quick-action protection scheme for EHV transmission lines based on multi-resolution morphologic gradient[J].Power System Technology,2008,32(13):100-104(in Chinese).
• [7]林湘宁,刘沛,杨春明,等.基于小波分析的超高压输电线路无通信全线速动保护方案[J].中国电机工程学报,2001,21(6):9-14.Lin Xiangning,Liu Pei,Yang Chunming,et al.A wavelet analysis based non-communication protection scheme for transmission lines[J].Proceedings of the CSEE,2001,21(6):9-14(in Chinese).
• [8]宋国兵,冉孟兵,褚旭,等.利用高低频电流幅值比的VSC-HVDC输电线路全线速动保护新原理[J].电网技术,2014,38(5):1402-1407.Song Guobing,Ran Mengbing,Chu Xu,et al.A new single-end current based whole-line quick-action protection for VSC-HVDC transmission lines[J].Power System Technology,2014,38(5):1402-1407(in Chinese).
• [9]宋国兵,褚旭,高淑萍,等.利用滤波器支路电流的高压直流输电线路全线速动保护[J].中国电机工程学报,2013,33(22):120-127.Song Guobing,Chu Xu,Gao Shuping,et al.A whole-line quick-action protection principle for HVDC transmission lines using one-end current of DC-filters[J].Proceedings of the CSEE,2013,33(22):120-127(in Chinese).
• [10]张鑫,牟龙华.配电线路暂态保护故障行波特征的研究[J].电力系统保护与控制,2013,41(12):1-8.Zhang Xin,Mu Longhua.Analysis on characteristics of traveling wave for transient protection of distribution lines[J].Power System Protection and Control,2013,41(12):1-8(in Chinese).
• [11]史燕琨,肖湘宁,邹积岩.基于边界保护的配电网故障区段无通信定位方法[J].电网技术,2009,33(4):88-93.Shi Yankun,Xiao Xiangning,Zou Jiyan.A non-communication fault section location method for power distribution system based on boundary protection[J].Power System Technology,2009,33(4):88-93(in Chinese).
• [12]徐丙垠,李天友,薛永端.智能电网建设中的继电保护问题[J].供用电,2012,29(1):12-17.Xu Bingyin,Li Tianyou,Xue Yongduan.Relay protection problems in smart grid construction[J].Distribution&Utilization,2012,29(1):12-17(in Chinese).
• [13]冯慈璋,马西奎.工程电磁场导论[M].北京:高等教育出版社,2000:262-267.
• [14]葛耀中.型继电保护和故障测距的原理与技术[M].西安:西安交通大学出版社,2007:181-182.
• [15]束洪春.行波暂态量分析与故障测距[M].北京:科学出版社,2016:1-4.
• [16]梁睿,靳征,王崇林,等.行波时频复合分析的配电网故障定位研究[J].中国电机工程学报,2013,33(28):130-136.Liang Rui,Jin Zheng,Wang Chonglin,et al.Research of fault location in distribution networks based on integration of travelling wave time and frequency analysis[J].Proceedings of the CSEE,2013,33(28):130-136(in Chinese).