动态等值新方法及其在天津电网中的应用  

A new dynamic equivalence method and its application in Tianjin grid

作　　者：李晓辉[1] 罗敏[2] 刘丽霞[1] 艾芊[2] 王西田[2] 岑海凤[2] 

机构地区：[1]天津市电力公司技术中心,天津300384 [2]上海交通大学电气工程系,上海200240

出　　处：《电力系统保护与控制》2010年第3期61-66,共6页Power System Protection and Control

基　　金：电力系统国家重点实验室开放基金重点项目(SKLD09kz07)

摘　　要：为了研究天津电网,提出了一种基于小生境免疫算法的估计等值新方法,根据实时的联络线动态响应,将外网等值成发电机,采用小生境免疫算法对等值模型进行参数辨识。该方法成功地应用到天津电网,仿真结果表明:基于小生境免疫算法的估计等值法估计精度高、鲁棒性强、能避免早熟问题,实用性强,解决了目前估计等值法存在的参数估计难的问题。To study Tianjin grid, this paper proposes a new evaluation equivalence method based on the niche immune algorithm, by which the external grid is equivalent to a generator and the parameters of the generator are certificated by the niche immune algorithm according to the dynamic responses of the tie line. It has been applied to Tianjin grid successfully. Simulation results show that the proposed method has good robustness, high precision, strong practicality, and can also avoid premature convergence. So it solves the difficulty of parameter estimation.

关 键 词：电力系统 动态等值 估计等值 免疫算法 小生境 

分 类 号：TM712[电气工程—电力系统及自动化]