Optimal PMU Placement by an Equivalent Linear Formulation for Exhaustive Search

被引:128
作者
Azizi, Sadegh [1 ]
Dobakhshari, Ahmad Salehi [2 ]
Sarmadi, S. Arash Nezam [3 ]
Ranjbar, Ali Mohammad [2 ]
机构
[1] Univ Tehran, Coll Engn, Sch Elect & Comp Engn, Tehran 14395515, Iran
[2] Sharif Univ Technol, Dept Elect Engn, Ctr Excellence Power Syst Management & Control, Tehran 1136511155, Iran
[3] Washington State Univ, Sch Elect Engn & Comp Sci, Pullman, WA 99164 USA
关键词
Integer linear programming; observability; optimal PMU placement (OPP); phasor measurement unit (PMU); PHASOR MEASUREMENT UNITS; OBSERVABILITY; TRANSITION;
D O I
10.1109/TSG.2011.2167163
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
Observability of bulk power transmission network by means of minimum number of phasor measurement units (PMUs), with the aid of the network topology, is a great challenge. This paper presents a novel equivalent integer linear programming method (EILPM) for the exhaustive search-based PMU placement. The state estimation implemented based on such a placement is completely linear, thereby eliminating drawbacks of the conventional SCADA-based state estimation. Additional constraints for observability preservation following single PMU or line outages can easily be implemented in the proposed EILPM. Furthermore, the limitation of communication channels is dealt with by translation of nonlinear terms into linear ones. Optimal PMU placement is carried out on the IEEE 118-bus test system in different scenarios. The comparison between obtained results of EILPM and those of other methods reveals optimality of the solutions. Moreover, the proposed method is successfully applied on the Iranian National Grid, which demonstrates it can effectively be employed for practical power networks.
引用
收藏
页码:174 / 182
页数:9
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