基于聚合理论的大区电网负荷建模  

Load-modeling in Large-scale Grid Based on the Aggregation Theory

作　　者：杨华春[1] 贺仁睦[1] 王鹏[1] 石景海[1] 张进[1] 

机构地区：[1]华北电力大学电气工程学院,北京市102206

出　　处：《电力系统自动化》2005年第1期49-52,共4页Automation of Electric Power Systems

基　　金：北京市自然科学基金资助项目(03-86556)华北电力大学青年教师科研基金资助项目。

摘　　要：提出了负荷模型向量基的概念,把基于元件的建模方法(综合统计法)和基于量测的建模方法(总体测辨法)结合起来,以聚合理论为基础,把实测点的负荷模型外推到其他未知点。通过负荷调查统计建立负荷模型系数矩阵,由实测点的负荷模型,通过不相容方程求最小二乘解,得到该地区的负荷模型向量基,区域内的其他任意未知点的负荷模型均可通过负荷模型向量基求出,建立该地区的负荷模型参数库。该方法已应用于实际电网,取得了良好的效果。A concept of the load model basic vector is proposed, through which the component-based modeling approach and measurement-based modeling approach are combined. Based on the aggregation theory, the load model for a certain observed substation can be extended to the others. By building the load model's coefficient matrix from the load investigation, we can obtain the grid's load model basic vectors from the load model of a certain observed substation through the incompatibility equation. Then, the unknown load models of other substations can be obtained from the load model basic vectors. Finally, the grid's load model's databank can be obtained. This method was used in an actual power network and the good results obtained reveal the superiority and effectiveness of this method.

关 键 词：负荷建模 聚合理论 电动机群 负荷模型向量基 负荷模型参数库 最小二乘解 

分 类 号：TM714[电气工程—电力系统及自动化] TP18[自动化与计算机技术—控制理论与控制工程]