考虑配电网络综合负荷模型的参数确定  

Parameters Determination of Synthesis Load Model Considering Distribution Network Connection

作　　者：陈谦[1] 孙建波[2] 蔡敏[2] 汤涌[3] 李大虎[2] 李淼[2] 邵正炎[1] 茆超[1] 鞠平[1] 

机构地区：[1]河海大学电气工程学院,江苏省南京市210098 [2]湖北省电力公司,湖北省武汉市430077 [3]中国电力科学研究院,北京市海淀区100192

出　　处：《中国电机工程学报》2008年第16期45-50,共6页Proceedings of the CSEE

基　　金：国家自然科学基金重大项目(50595412);国家杰出青年科学基金(50725723)~~

摘　　要：综合负荷模型(synthesisloadmodel,SLM)考虑了配电网络的影响,可较完整地模拟负荷与配电系统,更符合实际电力系统负荷的情况。针对该模型,该文提出采用统计综合法与总体测辨法相结合的方法来确定该模型的参数。重点研究通过统计综合法获得配电网等值参数后,利用总体测辨法确定综合负荷的参数。提出只辨识重要参数的辨识策略,而将其他参数直接用其典型值代替。某电网实测参数结果表明,上述方法是有效的,所得配电网电抗与电动机定子电抗之和平稳,电动机定子电抗和负载率较平稳,电动机比例和惯性时间常数变化明显。The newly developed synthesis load model （SLM） represents both load and corresponding distribution network. A methodology is proposed for determining the parameters of SLM, which is both component and measurement based. The focus lays in the identification as the equivalent distribution impedance has been got through aggregation of the distribution network. It is proposed that only the key parameters are identified and others are taken as typical values. The measured load parameters in a practical power grid are given to validate the methodology. The results indicate that the reactance sum of distribution network and induction motor varies tittle, the reactance of induction motor vary a little, the motor percentage and the inertia time constant varies significantly.

关 键 词：电力系统 负荷模型 配电网络 参数确定 

分 类 号：TM74[电气工程—电力系统及自动化]