摘要
为了提高利用单端电气量测距的精度,在对基于单端电气量的正序电流迭代测距法进行分析的基础上,利用负序网计算本端系统阻抗,并提出了利用系统正常运行时参数估算对端系统正序阻抗的方法,从而使测距算法对系统的运行方式具有一定的自适应性．为了防止测距结果不收敛或收敛太慢,还提出了加速收敛的方法(Alk- ten法)．Alkten法的应用提高了测距的稳定性．仿真结果表明：该测距方法可以使测距误差在1%以下,且实现简单,不需要另外增加硬件投资．
To enhance the fault location precision of positive-sequence iterative method based on signal terminal electrical data, a method to calculate the impedance of near system using the negative-sequence network is applied and a means to calculate positive-sequence impedance of opposite side system is presented. The parameters in normal case of power system are used to obtain positive-sequence of opposite system impedance, which makes the fault location be adaptive to the run states of power system. To prevent the iterative process from nonconverging or converging too slowly, the accelerating convergence （Alkten） is put forward, which can improve the stability of fault location. The simulation results show that the location error is under 1% and no extra hardware is needed.
出处
《天津大学学报》
EI
CAS
CSCD
北大核心
2006年第8期928-931,共4页
Journal of Tianjin University(Science and Technology)
关键词
故障测距
对端系统正序阻抗
加速收敛
fault location
positive-sequence impedance of opposite side system
accelerating convergence
