摘要
传统的利用单端电压电流工频分量的输电线路故障测距算法，较难解决多端输电线路故障定位问题。文中基于模量分析提出一种多端输电线路故障测距的实用算法，特．或为：端与瑞之间，数据不要求同步，不需实时通信；测距方程不需送代求解；不需故障前负荷状态信息，不需区分短路类型；原理上，与过渡阻抗大小和性质、电源等值阻抗变化、系统外部元件变化、线路本身耦合等诸多因素无关；线路建模采用RLC全分布参数线路模型。大量暂态仿真计算表明，该方法有效。
Generally. algorithms using one-terminal voltage and current data can not be used for locating the faults on multi-terminal lines. On the basis of modal analysis theory. this paper describes a new accurate fault location algorithm for mu1ti-terminal lines. The developed algorithm has the following features' The measurements taken at all ends are not required to besynchronized: The equations of fault location are solved noniterativeIy: The pre-fault conditions and the fault types are notrequired to be prepared: Theoretically, the technique is independent of the transient impedance, the source impedance, andthe coupling of the line itself: Both series impedance and shunt admittance effects are modeled. A large number of transientsimulation tests show that the algorithm described in the paper is feasible.
出处
《电力系统自动化》
EI
CSCD
北大核心
1998年第2期21-25,45,共6页
Automation of Electric Power Systems
关键词
多端输电系统
故障测距
故障分析
输电线路
multi-terminal transmission system fault location fault analysis
