电工技术学报  2016, Vol. 31 Issue (22): 159-167    DOI:
电力系统 |
不对称参数同塔四回线的综合横差保护方案
刘琦1, 邰能灵1, 范春菊1, 于仲安2, 尚瑨1
1. 上海交通大学电子信息与电气工程学院 上海 200240;
2. 江西理工大学电气工程与自动化学院 赣州 341000
Transverse Differential Protection for Quadruple-Circuit Lines with Asymmetrical Parameters
Liu Qi1, Tai Nengling1, Fan Chunju1, Yu Zhongan2, Shang Jin1
1. School of Electronic Information and Electrical Engineering Shanghai Jiaotong UniversityShanghai 200240 China;
2. School of Electrical Engineering and Automation Jiangxi University of Science and Technology Ganzhou 341000 China
全文: PDF (6786 KB)  
输出: BibTeX | EndNote (RIS)      
摘要 考虑不对称同塔四回线的阻抗不对称特性,提出一种适用于不对称同塔四回线的综合横差保护方案,并根据所配置的综合横差保护方案的动作信号,给出了四回线的故障选线方案。分析了故障时同塔四回线的故障附加网络,基于故障时流经各回线的故障附加电流,构建了基于负序分量的两种横差保护方案,即小横差保护方案和大横差保护方案。讨论了不同接线方式下两种横差保护测量到的差动电流,给出了横差保护的整定方法,并综合保护的动作信号提出了基于横差保护的四回线的故障选线方案。PSCAD/EMTDC仿真结果表明,负序分量横差保护能够准确区分同塔四回线的区内、区外故障;在区内故障时,横差保护能够可靠动作,切除故障线路,具有较强的抗过渡电阻能力。仿真结果证明了保护方案的有效性与故障选线的可行性。
服务
把本文推荐给朋友
加入我的书架
加入引用管理器
E-mail Alert
RSS
作者相关文章
刘琦
邰能灵
范春菊
于仲安
尚瑨
关键词 同塔四回线不对称线路横差保护序分量选线    
Abstract:Due to the asymmetrical parameters of the quadruple-circuit lines, a new method for transverse differential protection and line selection is proposed. Fault super-imposed networks of the quadruple-circuit lines are discussed, and sequence currents of each line are also calculated during a fault. According to the characteristics of sequence currents obtained by the protector, negative- component based transverse differential protection approach is proposed. Different connection schemes of transverse differential protection are considered, and the setting values of the protection are calculated corresponding to different schemes. All the signals of all the protections are acquired by line selection to judge which line to be cut off. Simulation results have verified the reliability and feasibility of the negative-component based transverse differential protection.
Key wordsQuadruple-circuit lines    asymmetrical line    transverse differential protection    sequence component    line selection   
收稿日期: 2014-08-10      出版日期: 2016-12-02
PACS: TM773  
基金资助:国家自然科学基金资助项目(51177066、51377104)
作者简介: 刘琦男,1987年生,博士研究生,主要从事电力系统保护与控制的研究。E-mail:LiuQi8165@163.com(通信作者);邰能灵男,1972年生,教授,博士生导师,主要从事电力系统保护与控制及电力市场的教学与研究工作。E-mail:nltai@sjtu.edu.cn
引用本文:   
刘琦, 邰能灵, 范春菊, 于仲安, 尚瑨. 不对称参数同塔四回线的综合横差保护方案[J]. 电工技术学报, 2016, 31(22): 159-167. Liu Qi, Tai Nengling, Fan Chunju, Yu Zhongan, Shang Jin. Transverse Differential Protection for Quadruple-Circuit Lines with Asymmetrical Parameters. Transactions of China Electrotechnical Society, 2016, 31(22): 159-167.
链接本文:  
https://dgjsxb.ces-transaction.com/CN/Y2016/V31/I22/159