基于电流量的有源配电网故障定位方法
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摘要
随着世界能源结构布局的改变,传统配电网因分布式电源的接入变为多电源供电、潮流多变的复杂有源配电网络,导致传统的故障定位控制算法失效。因此,提出了基于电流量的有源配电网故障定位方法,通过有源配电网的不同类型节点上下游的电流量,依照各类节点所提出的改进判定方法来搜索故障流向,从而确定出有源配电网的故障关联区域,并通过PSCAD/EMTDC软件平台仿真含分布式电源的33节点配电网系统来验证文中方法的正确性与准确性,实现有源配电网相间短路故障的精确定位。
With the change of the energy structure, the traditional distribution network has become a complex active power distribution network with multiple power supplies and variable power flow due to the access of distributed power supply, which makes the traditional fault location control algorithm invalid. Therefore, a method for fault location of active distribution network based on current magnitude is proposed. Through the current magnitude of upstream and downstream of different types of nodes in the active distribution network, the fault flow direction is searched according to the new main and auxiliary criteria proposed by various nodes. The fault correlation area of the active distribution network is determined, and a 33-node distribution network system with distributed power supply is simulated by PSCAD/EMTDC software platform to verify the correctness and accuracy of the proposed method. The phase-to-phase short circuit of the active distribution network is simulated and precise positioning of the fault can be located.
With the change of the energy structure, the traditional distribution network has become a complex active power distribution network with multiple power supplies and variable power flow due to the access of distributed power supply, which makes the traditional fault location control algorithm invalid. Therefore, a method for fault location of active distribution network based on current magnitude is proposed. Through the current magnitude of upstream and downstream of different types of nodes in the active distribution network, the fault flow direction is searched according to the new main and auxiliary criteria proposed by various nodes. The fault correlation area of the active distribution network is determined, and a 33-node distribution network system with distributed power supply is simulated by PSCAD/EMTDC software platform to verify the correctness and accuracy of the proposed method. The phase-to-phase short circuit of the active distribution network is simulated and precise positioning of the fault can be located.
引文
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[9]金涛,李鸿南,刘对.基于BPSOGA的含风电机组的配电线路故障区段定位[J].电力自动化设备,2016,36(6):27-33.
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[12]RAFINIA A,MOSHTAGH J.A new approach to fault location in three-phase underground distribution system using combination of wavelet analysis with ANN and FLS[J].International Journal of Electrical Power and Energy Systems,2014,55(2):261-274.
[13]吴宁,许扬,陆于平.分布式发电条件下配电网故障区段定位新算法[J].电力系统自动化,2009,33(14):77-82.
[14]刘鹏程,李新利.基于多种群遗传算法的含分布式电源的配电网故障区段定位算法[J].电力系统保护与控制,2016,44(2):36-41.
[15]付家才,陆青松.基于蝙蝠算法的配电网故障区间定位[J].电力系统保护与控制,2015,43(16):100-105.
[16]牛耕,周龙,裴玮,等.基于克拉克电流相角差值的低压有源配电网故障定位方法[J].中国电机工程学报,2015,35(S1):15-24.
[17]牛耕,周龙,裴玮,等.低压有源配电网在线故障区间定位与识别方法[J].中国电机工程学报,2017,37(9):2525-2538.
[2]郭玉雯.分布式发电配电网故障区段定位新方法[J].计算机应用与软件,2017,34(9):14-18.
[3]赵波,王财胜,周金辉,等.主动配电网现状与未来发展[J].电力系统自动化,2014,38(18):125-135.
[4]WENG J M,LIU D,LUO N,et al.Distributed processing based fault location,isolation,and service restoration method for active distribution network[J].Journal of Modern Power Systems and Clean Energy,2015,3(4):494-503.
[5]马帅,武志刚,高厚磊,等.适配高渗透率DG接入配电网的幅值比较式保护[J].电力系统保护与制,2019,47(4):43-50.
[6]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.
[7]彭浩,沈兴来,陈奎,等.电缆单端故障测距的阻抗-行波组合法[J].电力系统保护与控制,2016,44(23):111-114.
[8]戴志辉,崇志强,李川,等.基于电压偏差向量2-范数的主动配电网故障定位新方法[J].电力系统自动化,2015,39(15):96-102.
[9]金涛,李鸿南,刘对.基于BPSOGA的含风电机组的配电线路故障区段定位[J].电力自动化设备,2016,36(6):27-33.
[10]ROOSTAEE S,THOMAS M S,MEHFUZ S.Experimental studies on impedance based fault location for long transmission lines[J].Protection and Control of Modern Power Systems,2017,2(2):169-177.
[11]刘健,张小庆,同向前,等.含分布式电源配电网的故障定位[J].电力系统自动化,2013,37(2):36-42.
[12]RAFINIA A,MOSHTAGH J.A new approach to fault location in three-phase underground distribution system using combination of wavelet analysis with ANN and FLS[J].International Journal of Electrical Power and Energy Systems,2014,55(2):261-274.
[13]吴宁,许扬,陆于平.分布式发电条件下配电网故障区段定位新算法[J].电力系统自动化,2009,33(14):77-82.
[14]刘鹏程,李新利.基于多种群遗传算法的含分布式电源的配电网故障区段定位算法[J].电力系统保护与控制,2016,44(2):36-41.
[15]付家才,陆青松.基于蝙蝠算法的配电网故障区间定位[J].电力系统保护与控制,2015,43(16):100-105.
[16]牛耕,周龙,裴玮,等.基于克拉克电流相角差值的低压有源配电网故障定位方法[J].中国电机工程学报,2015,35(S1):15-24.
[17]牛耕,周龙,裴玮,等.低压有源配电网在线故障区间定位与识别方法[J].中国电机工程学报,2017,37(9):2525-2538.