负荷特性记录的综合方法研究  

Research on Integration Method of Load Characteristic Record

作　　者：许津津[1] 陶华[1] 邹文聪[1] 

机构地区：[1]泉州电业局,福建泉州362000

出　　处：《现代电力》2011年第3期33-37,共5页Modern Electric Power

摘　　要：随着负荷动态特性记录仪记录数据条数的增多,每次采用多曲线辨识方法进行辨识会增长辨识时间,而采用综合方法对所有负荷特性记录进行综合只需辨识新增加的负荷特性记录。本文首先分析了负荷特性综合的3种方法:静态负荷、电动机阻抗和电动机导纳等值方法,然后将负荷分为静态负荷和电动机负荷,分别进行等值。比较了5种权值,包括稳态功率、改进的稳态功率权值、灵敏度、对转差率较敏感的参数在权值选取时考虑转差率和负载率、综合权值后,分别采用这5种权值对参数进行综合,从而得出面向综合的负荷模型。经实例验证,采用综合权值的方法可以有效快速地建立综合负荷模型,且具有较强的泛化能力。With the increasing amount of dynamic characteristic recorder data,the identifying time will increase by using of multiple curves identifying method,while the integration of all load characteristics records by integrated method only requires identifying added records of load characteristics.Three equivalence methods of integrating load characteristics,such as static load,impedance and admittance of motor are analyzed at first.Loads are divided to static and dynamic loads,which are equivalent separately.Then,five kinds of weights are compared,i.e.steady-state power,improved steady-state power,sensitivity,slip ratio and load rate considered if weights selecting of parameters that are sensitive to slip ratio,and composite weight.In addition,the parameters are integrated by five kinds of weights proposed in this paper,and composite load model is obtained.Case study verifies that the composite load model can be constituted effectively and rapidly by integrated weighting method,which has strong generalized capability.

关 键 词：负荷特性记录 综合方法 权值选取 负荷建模 电力系统 

分 类 号：TM743[电气工程—电力系统及自动化]