中国电机工程学报2011，Vol.31Issue(22)：73-79,7.
电力系统关联性参数的辨识与评估
Identification and Assessment of Associated Parameters in Power Systems
摘要
Abstract
It is difficult to identify associated parameters for the reason that different combinations of them can produce the same simulation results. Therefore, in order to build confidence for model parameters, it is necessary to recognize which parameters are associated and then evaluate their credibility. This paper presented identification and assessment methods of associated parameters based on linear dependence of trajectory sensitivities. Firstly, a method to identify associated parameters was proposed, which was based on trajectory sensitivities and could separate associated parameters into several affiliated groups. Then associated parameters were estimated, by assigning default value to some of the representative parameters in the same affiliated group. Lastly, the method was also presented to assess how the default values influence the credibility of the identified parameters. Test studies show that the proposed methods can correctly recognize which parameters are associated and can estimate associated parameters with robustness. When the default values slightly differ from the true ones, or good linearity is kept among the associated parameters, distances between the identification results and the true values of the other associated parameters can be correctly assessed.关键词
电力系统/参数辨识/可辨识性分析/轨迹灵敏度Key words
power system/parameter identification/identifiability analysis/trajectory sensitivity分类
信息技术与安全科学引用本文复制引用
伍双喜,张伯明,吴文传..电力系统关联性参数的辨识与评估[J].中国电机工程学报,2011,31(22):73-79,7.基金项目
国家重点基础研究发展计划项目（973项目)（2004CB217904)国家电网公司科技项目. （）
