应用界标分界法的电力系统动态仿真准确度评估  

Accuracy Assessment of Power System Dynamic Simulation Based on Landmark Method

作　　者：周成[1] 贺仁睦[1] 

机构地区：[1]电力系统保护与动态安全监控教育部重点实验室(华北电力大学),北京市昌平区102206

出　　处：《中国电机工程学报》2010年第7期42-47,共6页Proceedings of the CSEE

基　　金：国家自然科学基金项目(50595410);国家重点基础研究专项经费项目(2004CB217901)~~

摘　　要：动态仿真在电力系统分析方面已得到了广泛的应用,成为系统设计、运行不可缺少的工具;仿真的准确度直接决定了系统运行的安全性和经济性。针对现有仿真准确度评估方法的不足,综合了界标分界法与直接距离法,提出了基于形状相似度和数值相似度2个指标的电力系统仿真准确度的评估方法。该方法克服了在噪声干扰情况下应用规范系数法求解形状相似度时评估结果失真的问题,其评估结果可为使用人员进行模型修正提供参考依据。结合2004年某地区大扰动试验的实测数据及使用不同负荷模型进行后验仿真的计算结果,进行了算例分析,验证了该评估方法的可行性。Dynamic simulation has been widely used in power system analysis, becoming a very important tool to system design and operation, and the accuracy of dynamic simulation can determine directly the security and economic efficiency of power system operation. Concerning the shortcomings of present methods evaluating the accuracy of simulation, a novel evaluation method based on both landmark method and direct distance method is presented in this paper, which has two evaluating indexes, i.e. shape similarity and numerical value similarity, and is capable of dealing with the problem of evaluation distortion by means of shape similarity with the help of normative coefficient method under noisy condition. Evaluation result with this method is helpful to model modification. Analysis based on measurement data of big disturbance test occurring in a certain power grid of China in 2004 and the posterior simulation results by different load models is presented, which proves the efficiency of this method.

关 键 词：动态仿真 电力系统 界标分界法 数值相似度 形状相似度 

分 类 号：TM74[电气工程—电力系统及自动化]