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中文摘要：
为优化电力系统阻尼特性,本文利用改进萤火虫算法对电力系统稳定器与静止同步补偿器阻尼控制器参数进行协调优化。该算法通过在标准萤火虫算法基础上引入高斯递减惯性权重,权衡优化算法的全局搜索能力和局部搜索能力提高其寻优性能。另外,以系统多种运行方式下的特征值及机电振荡模式特性为优化的目标函数,保证了协调优化策略的适应性和鲁棒性。将所提方法应用于四机两区域系统,仿真结果表明,多种运行方式下,协调优化后系统的阻尼比有大幅度提升,从而能够有效抑制电力系统低频振荡,提高系统的动态稳定性能。
英文摘要：
In order to optimize the damping characteristics of power system,an improved firefly algorithm（IFA）isused for the coordinated optimization of parameters of the damping controller applied to power system stabilizer（PSS）and static synchronous compensator（STATCOM）in this paper. Based on the introduction of the Gaussian decreasing in-ertia weight to the standard firefly algorithm（FA）,the global and local searching abilities of FA is coordinated,so itsoptimization performance can be increased. In addition,the eigenvalues and characteristics of electromechanical oscil-lation modes of the power system under a variety of operation conditions are used as an objective function to ensure theadaptability and robustness of this coordinated optimization strategy. The proposed method is applied to a four-generatortwo-area system. Simulation results show that under a variety of operation conditions,the damping ratios of the systemafter coordinated optimization have been improved significantly,which can effectively suppress the low frequency oscil-lation of the power system and improve its dynamic stability performance.
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