Performance Bounds and Sensor Placement for State Estimation Using PMUs with Phase Mismatch

被引：0

作者：

Yang, Peng ^{[1
]}

Tan, Zhao ^{[1
]}

Wiesel, Ami ^{[2
]}

Nehorai, Arye ^{[1
]}

机构：

[1] Washington Univ, Preston M Green Dept Elect & Syst Engn, St Louis, MO 63130 USA

[2] Hebrew Univ Jerusalem, Sch Comp Sci & Engn, Jerusalem 91904, Israel

来源：

2013 IEEE POWER AND ENERGY SOCIETY GENERAL MEETING (PES) | 2013年

基金：

美国国家科学基金会;

关键词：

Phasor measurement unit; state estimation; phase mismatch; posterior Cramer-Rao bound; greedy algorithm; sensor placement;

D O I：

暂无

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Phasor measurement units (PMU) provide time-synchronized linear measurements for power system state estimation. In practice, the synchronization is not perfect for various reasons. In this paper we derive the posterior Cramer-Rao bound on the estimation error based on a realistic measurement model which takes into account the synchronization error. We then use a greedy algorithm for PMU placement based on the derived bound, and compare the results with other heuristics and the optimal solution through exhaustive search. Numerical examples demonstrate the performance improvement using the PMU placement profile from the greedy algorithm. The results also indicate that the greedy technique closely approximates the optimal solution.

引用

页数：5

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