Volume 10, Number 4 (Dec 2014 2014)                   IJEEE 2014, 10(4): 283-292 | Back to browse issues page


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Esmaili M, Shayanfar H A, Gharani K. Observability-Enhanced PMU Placement Considering Conventional Measurements and Contingencies. IJEEE. 2014; 10 (4) :283-292
URL: http://ijeee.iust.ac.ir/article-1-642-en.html

Abstract:   (1915 Views)
Phasor Measurement Units (PMUs) are in growing attention in recent power systems because of their paramount abilities in state estimation. PMUs are placed in existing power systems where there are already installed conventional measurements, which can be helpful if they are considered in PMU optimal placement. In this paper, a method is proposed for optimal placement of PMUs incorporating conventional measurements of zero injection buses and branch flow measurements using a permutation matrix. Furthermore, the effect of single branch outage and single PMU failure is included in the proposed method. When a branch with a flow measurement goes out, the network loses one observability path (the branch) and one conventional measurement (the flow measurement). The permutation matrix proposed here is able to model the outage of a branch equipped with a flow measurement or connected to a zero injection bus. Also, measurement redundancy, and consequently measurement reliability, is enhanced without increasing the number of PMUs this implies a more efficient usage of PMUs than previous methods. The PMU placement problem is formulated as a mixed-integer linear programming that results in the global optimal solution. Results obtained from testing the proposed method on four well-known test systems in diverse situations confirm its efficiency.
Full-Text [PDF 201 kb]   (1094 Downloads)    
Type of Study: Research Paper | Subject: Power systems Control
Received: 2013/10/27 | Accepted: 2014/12/24 | Published: 2014/12/24

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