摘要
基于多机系统均匀阻尼模型,借助拉格朗日中值定理和拉萨尔不变性原理提出了一个构建暂态稳定域的闭合子集的解析方法:一阶上界函数法。介绍了构建此稳定域方法的解析表达式和计算步骤,并针对 3 个不同的算例系统进行了系列仿真,结果表明该方法结果尽管保守,但严格可靠,该方法的显著特点是简单可靠,而且还避免了计算不稳定平衡点这个传统能量函数法存在的困难。
Based on the classical model of multi-machine power system with uniform damping, by the aid of the Lagrange Mean Value Theorem and LaSalle Invariance Principle, we present a method for constructing a closed hyper-ball that strictly resides in transient stability domain. This method is termed first order upper bounding function method. First of all, we derive the analytical expression and computational step of the approximated stability region. Three Numerical examples are provided in the end, the result of simulation reveals that the method in this paper is strict and reliable although conservative to some extent. The remarkable merit of this method is its simplicity and reliability, and furthermore, the method avoids the difficulty of computing UEP that is essential in traditional transient energy function methods.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2005年第5期15-20,共6页
Proceedings of the CSEE
