International Conference on Computer and Knowledge Engineering

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Optimal PMU Placement Considering Reliability of Measurement System in Smart Grids

Authors :

Mohammad Shahraeini¹ Shahla Khormali² Ahad Alvandi³

1- Golestan University 2- Golestan University 3- Golestan University

Keywords :

state estimation،observability،reliability،weighted adjacency matrix

Abstract :

State estimation has been known as the major part of power system operation, and observability analysis is the main function in an estimator. Therefore, the placment of measurement devices for the observability of the entire network has always been the main concern, while the reliability of the estimator is an important issue that also should be considered. The current study presents a method for PMU placement that designs a highly reliable estimator with a minimum number of such units. This can be achieved by using a weighted adjacency matrix, which utilizes reliability of transmission lines as its weights, and well-defined objective function that tries to maximize reliability of estimator. The simulation results for the IEEE 14 and 24 bus test networks show that the proposed method not only minimizes the number of PMUs but also places such units on the branches with higher reliability.

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