【摘要】 现场中TV、TA、电缆以及保护装置等对电压、电流传输的时延,众多因素导致两端数据很难做到真正意义上的双端数据同步,因此寻找一种既能精确反映高压输电线路参数的真实情况,又不需要两端数据同步采样的实用的精确定位算法,具有很大的理论和实际意义。针对此情况,本文提出一种基于参数估计且原理上不受采样不同步影响的同杆并架双回线路的精确故障定位新算法。该算法采用分布参数线路模型,利用双端数据和六序分量法,并考虑对不准确线路参数识别的问题。EMTP仿真表明该算法的正确性和有效性。定位精度较高,且不受故障过渡阻抗、负荷电流和系统运行方式的影响,不需要双端数据同步,对不准确的线路参数具有较好的自适应能力。该算法具有一定的工程实用价值。更多还原

【Abstract】 The paper presents a new algorithm for fault location in transmission lines on the same tower using unsynchronized or synchronized two-terminal data,which uninfluenced by unsynchronized data—a method of significance both in theory and practice.The algorithm adopts the line’s model of distributing parameter,considers the problem that can identify inaccuracy line parameters,and uses two-end data and six-order compoment.By EMTP simulating,the resutls manifest correctness and validity of the algorithm,not hindered by the fault impedance,electric current of load and condition of system operation and not in need of synchronized two-terminal data and has a better adaptive ability to inaccuracy line parameters.This algorithm has certain practical value of project.更多还原