摘要
提出一种将Brown算法与重新选择参考点的策略相结合求解电力系统暂态稳定性直接法 分析中主导不稳定平衡点(Controlling-UEP)的新方法。Brown算法相似于高斯消元法的牛顿类 算法,它把每一方程展成泰勒级数,所得到的最新信息(关于变量的最新解)立刻用于下一函数的构 造及求解,是求解病态方程组的好算法。文中将它与参考点的重新选择策略相结合,进一步提高它 求取病态情况下Controlling-UEP的稳定性。算例表明,所提出的新方法在收敛性和计算效率方 面有较好的效果。
A new method to calculate the Controlling-UEP in the direct method of transient stability of power system is proposed, which combines the Brown algorithm with the strategy of the reselection of the reference bus. Similar to algorithms of the Newton type, Brown algorithm transforms each equation into Taylor series. The difference is that it makes use of the latest information gained (about the variables) immediately in building and solving the next equation. Hence it is a good method to solve ill-conditional equations. This paper combines the Brown algorithm with the strategy of the reselection of the reference point to further improve the calculation stability and efficiency in pursuing Controlling-UEP. The test results show that the new method is superior to other methods in the aspects of convergence and speed.
出处
《电力系统自动化》
EI
CSCD
北大核心
2005年第23期25-28,共4页
Automation of Electric Power Systems
基金
国家自然科学基金资助项目(50477036)。~~
作者简介
林济铿(1967-),男,博士,副教授,研究方向为电力系统稳定性分析及控制、电力市场及人工智能在电力系统中的应用。E-mail:mejklin@dt.com.cn
关磊(1981-),男,硕士研究生,研究方向为电力系统稳定性分析。
罗萍萍(1969-),女,硕士,讲师,研究方向为人工智能在电力系统中的应用和继电保护。