摘要
当长线采用N个等效的T型或Π型网络代替时 ,暂态短路电流的计算要解高阶的特征方程。提出一种Z Q迭代算法 ,在复平面上迭代求解高阶特征方程的根 ,因而收敛性不受迭代初值的影响。仿真结果表明该算法计算高阶特征方程具有收敛快 ,精度高 ,算法稳定的特点。因而用该算法可以非常容易地计算在高压远距离输电线短路故障的暂态短路电流。
The calculation of transient short circuit current needs root extraction of higher order proper equation when T networks or Π networks are used to replace distant transmission lines.A Z?Q iteration method on complex plane is introduced for the root extraction of higher order proper equation,the initial iterative value does not influence the convergence.The test results show that its convergence speed is fast,precision is high and the algorithm is stable.With this algorithm the transient short circuit current of HV distant transmission line can be easily calculated.
出处
《电力自动化设备》
CSCD
2000年第4期12-14,24,共4页
Electric Power Automation Equipment
关键词
暂态过程
集中参数
高压远距离输电线路
transient process
concentration parameter
proper equation
Z-Q algorithm
