Implementing nonquadratic objective functions for state estimation and bad data rejection

被引:81
作者
Baldick, R [1 ]
Clements, KA [1 ]
PinjoDzigal, Z [1 ]
Davis, PW [1 ]
机构
[1] WORCESTER POLYTECH INST, WORCESTER, MA 01609 USA
基金
美国国家科学基金会;
关键词
D O I
10.1109/59.575722
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Using a nonquadratic objective function for network state estimation can combine several estimation and bad data rejection techniques into one algorithm; e.g., the benefits of maximum likelihood least squares estimation can be coupled with the bad data rejection properties of least absolute value estimation. For such estimators, rye describe an efficient implementation, one that builds naturally on existing least squares software, that is based on an iterative Gauss-Newton solution of the KKT optimality conditions. We illustrate the behavior of a quadratic-linear and a quadratic-constant objective function on a set of test networks. The former is closely related to the Huber M- estimator. The latter shows somewhat better bad data rejection properties, perhaps because it arises from a natural model of meter failure.
引用
收藏
页码:376 / 382
页数:7
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