计及距离空间的电网参数误差支路选取方法  

A Network Parameter Error Identification Method Considering Distance Space

作　　者：颜全椿[1] 郑明忠[2] 梁伟[2] 

机构地区：[1]江苏方天电力技术有限公司,江苏南京211102 [2]江苏省电力公司电力科学研究院,江苏南京211103

出　　处：《江苏电机工程》2015年第5期25-28,33,共5页Jiangsu Electrical Engineering

摘　　要：电网参数错误将影响状态估计的质量,并降低能量管理系统中其它高级应用软件的实用化程序,研究实用的可疑支路集选取具有重要的现实意义。针对传统方法仅考虑本条支路量测残差的不足,提出计及相邻及外围支路残差的可疑支路选取方法。同时对不同支路距离的量测标准差加权处理,便于对不同运行工况及量测配置的支路可疑度进行排序比较;借助IEEE标准系统及某实际省网仿真计算的有效性,与传统可疑支路选取方法进行比较,结果表明该方法具有优越性。Errors of network parameters can severely affect the performance of state estimation and degrade the usefulness of other advanced applications in an energy management systems（EMS）. It is important to develop a practical suspicious branch set selection method. Due to the deficiency of the traditional method which only considers the branch measurement residuals,a parameter error identification considering distance space is proposed, which takes the adjacent branch and peripheral branch into consideration. At the same time, the standards residual of different branch distance measurement are assigned with different weights, which facilitates the sorting comparison of different operation mode and measurement placement branch.Finally, the IEEE standard test system and a provincial power grid are adopted to verify the usefulness of the proposed approach, and the comparison results between the proposed method and the traditional parameter error identification method illustrate that the proposed method performances better.

关 键 词：输电网 距离空间法 可疑支路 参数辨识 状态估计 

分 类 号：TM721[电气工程—电力系统及自动化]