摘要
针对目前配电网不断壮大,单相接地故障频繁发生,而对于配电网单相接地故障的准确量测,仍没有行之有效办法的问题。提出基于零序参数暂态特性的单相接地故障状态感知方法,利用暂态下首容频段内健全线路与故障线路零序电流和零序电压导数之间的正负线性关系特性,进行单相接地故障区段定位。并基于RTDS仿真平台对其有效性进行验证,仿真结果表明基于零序参数暂态特性的状态感知方法能够利用故障后的暂态量,正确定位单相接地故障区段,且具有较好的耐过渡电阻能力。同时,依据该方法提出一种基于零序参数暂态特性的故障状态感知系统实现方式,该方式可以在现有的配电自动化系统上扩展实现,具有较高的实际应用价值。
引文
[1]张颖,周韧,钟凯.改进蚁群算法在复杂配电网故障区段定位中的应用[J]_电网技术,2011,35(1):224-228.
[2]齐郑,郑朝,杨以涵.谐振接地系统单相接地故障区段定位方法[J]_电力系统自动化,2010,34(9):77-80.
[3]Pourahmadi-nakhli M,Safavi A A.Path characteristic frequency-based fault locating in radial distribution systems using wavelets and neural networks[J].IEEE Transactions on Power Delivery,2011,26(2):772-781.
[4]唐成虹,杨志宏,宋斌,等.有源配电网的智能分布式馈线自动化实现方法[J].电力系统自动化,2015,9:017.
[5]胡一中,吴文传,张伯明.采用频率相关网络等值的RTDS-TSA异构混合仿真平台开发[J].电力系统自动化,2014,38(16):88-93.
[6]Ling W,Liu D.A distributed feeder automation algorithm and its model checking[J].Sensors&Transducers,2014,162(1):325.
[7]Borghetti A,Bosetti M,Nucci C A,et al.Integrated use of time-frequency wavelet decompositions for fault location in distribution networks:theory and experimental validation[J].IEEE Transactions on Power Delivery,2010,25(4):3139-3146.
[8]Zaker N,Kantarci B,Erol-Kantarci M,et al.Smart grid monitoring with service differentiation via EPON and wireless sensor network convergence[J].Optical Switching and Networking,2014,14:53-68.
[9]Biswas S,Mondal K,Chowdhuri S,et al.Assesment of stability of an alternator from its real and reactive power output using RTDS with NI-LabVIEW[C]//2014 International Conference on Control,Instrumentation,Energy and Communication(CIEC).IEEE,2014:733-737.
[10]Perera N,Rajapakse A D,Buchholzer T E.Isolation of faults in distribution networks with distributed generators[J].IEEE Transactions on Power Delivery,2008,23(4):2347-2355.
[11]Sharma R.Evaluation and comparison of load balancing in RTDS using Information theoretic entropy[C]//2014IEEE International Advance Computing Conference(IACC).IEEE,2014:674-679.
[12]董旭柱,黄邵远,陈柔伊,等.智能配电网自愈控制技术[J].电力系统自动化,2012,36(18):17-21.
[13]封士永,王江宁,周磊,等.配电网邻域速动型分布式馈线自动化策略及仿真分析[J]_电力科学与技术学报,2015,30(4):96-104.
[14]Chowdhury A,Patel D,Patil P R,et al.Design and development of technique for in-situ response time measurement of RTDS and implementation aspects for nuclear power plant application[C]//Proceedings of the Third National Symposium on Advances in Control and Instrumentation,2014.
[15]刘健,赵树仁,负保记,等.分布式智能型馈线自动化系统快速自愈技术及可靠性保障措施[J].电力系统自动化,2011,35(17):67-71.
[16]刘凯,李幼仪.主动配电网保护方案的研究[J].中国电机工程学报,2014,34(16):2584-2590.
[17]Zhifeng Z,Dong A,Qincheng Y,et al.Communication research based on distributed intelligent feeder automation system of the distribution network[C]//2014 China International Conference on Electricity Distribution(CICED).IEEE,2014:1-4.