New method for computing unstable equilibrium points of power systems with induction motors

被引：0
|
作者：
Lei Chen
Fei Xu
Yong Min
机构：
[1] Tsinghua University,State Key Lab of Power Systems, Department of Electrical Engineering
来源：
Science China Technological Sciences | 2010年 / 53卷
关键词：
power system stability; transient voltage stability; unstable equilibrium point (UEP); stability boundary; induction motor;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The computation of the unstable equilibrium point (UEP) is a key step involved in stability region estimation of nonlinear dynamic systems. A new continuation-based method to compute the UEPs of a power system with induction motors is proposed. The mechanical torques of motors are changed to form a parameterized equation set. Then the solution curve of the equation set is traced by the continuation method from the stable equilibrium point to a UEP. The direction of mechanical torque change is varied to get multiple UEPs. The obtained UEPs are mostly type-1. Then fast assessment of induction motor stability is studied by approximating the stable manifolds of the UEPs. The method is tested in several systems and satisfactory results are obtained.
引用
收藏
页码：881 / 885
页数：4
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