摘要
求取电压稳定分歧点的步长选取恰当 ,是快速求得分歧点的重要因素。它是目前各种求解方法中存在的一个困扰问题。本文利用高斯消元的方法 ,把一个复杂的电力网络简化成一个简单的网络。通过确定简单网络的功率极限 ,作为原来的复杂网络的负荷增长步长 ,求解原网络此时的潮流 ,重复以上过程 ,得到原网络在趋近系统静态电压稳定分歧点过程中的两三个状态 ,通过二次插值快速接近系统电压稳定分歧点。分析与研究算例表明 ,此方法能快速、准确地获得系统静态电压稳定分歧点 。
A selection of suitable step length is an important loop for fast finding out the solution of the voltage stability bifurcation, and this is also a trouble problem for the current methods at present. A complex network was simplified by Guass elimination is used in this paper. As it is very easy to determinate the power limit, and this power limit is near and less than the bifurcation of the complex network. So we can use this power limit as an increasing load first step length, and find out the load flow solution in this operation state. Repeat the process above, we can get another solution more close to the bifurcation. Then we can approach the voltage stability bifurcation quickly through the quadratic interpolation using the solutions obtained ahead. Samples studied show that this approach can obtain the VSB Fastly and accurately. It is suitable in on line application in power system.
出处
《电力系统及其自动化学报》
CSCD
2000年第5期51-54,共4页
Proceedings of the CSU-EPSA
