| 模拟退火法用于电压稳定分析 |
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| 引用本文： | 程林,郭永基,肖炏.模拟退火法用于电压稳定分析[J].清华大学学报(自然科学版),1999(1). |
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| 作者姓名： | 程林 郭永基 肖炏 |
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| 作者单位： | 清华大学,电机工程与应用电子技术系,北京,100084 |
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| 基金项目： | 清华大学校科研和教改项目 |
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| 摘 要： | 为了提高用于电压稳定分析的非线性最优化方法的效率，提出了将模拟退火法和单纯形法相结合求解非线性最优化问题的新算法，避免了在全局最优点附近的大量低效搜索，提高了模拟退火法的计算效率。应用这种新算法求解静态电压稳定极限，用５节点系统进行验证得到了满意的结果。求解静态电压稳定极限问题可以等效为含有非线性等式约束和不等式约束的非线性最优化问题，采用内点法将不等式约束问题转化为等式约束问题，再通过引入罚函数转化为无约束最优化问题，然后应用本算法进行计算，结果表明新算法是有效的。
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| 关 键 词： | 模拟退火 单纯形 静态电压稳定极限 罚函数 内点法 |
Application of simulated annealing algorithm to voltage stability calculation |
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| CHENG Lin,GUO Yongji,XIAO Kai.Application of simulated annealing algorithm to voltage stability calculation[J].Journal of Tsinghua University(Science and Technology),1999(1). |
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| Authors: | CHENG Lin GUO Yongji XIAO Kai |
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| Abstract: | In order to improve the efficiency of nonlinear optimization method, a new algorithm based on combination of the nonlinear simplex with simulated annealing (SA) for global nonlinear optimization is presented. This improved algorithm provides faster execution time without compromising the quality of solutions obtained. The improved algorithm is adopted to calculate the longer term voltage stability limit. The interior point method and the penalty function are chosen to solve nonlinear equality and inequality constraints in the static voltage stability calculation. A digital test for a sample system with five bus shows that the developed algorithm is effective and valid. |
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