PMU Placement for Maximum Observability of Power System under Different Contingencies

Abstract

The demands of power supply increases day by day which increase the risk issue due to non-linearity of the power system. Sometimes, a small disturbance may create the chain of disturbances and results in a blackout. To avoid this possibility, intensely islanding is the key option in which some area of the power system is detached from the affected area. In this paper, an Integer Linear Programming (ILP) based optimal placement of Phasor Measurement Units (PMUs) has been proposed to provide the full observability of the system under two contingencies voltage stability based contingency and intensely islanding based contingency. Maximum observability of the power system is the additional objective of proposed method which increases the reliability of the power system. All the simulations have been tested on IEEE 14-bus, IEEE 30-bus, IEEE 118-bus, New England 39-bus test systems and Indian NRPG 246-bus system. To check the usefulness of proposed method, results have been compared with methods available in the literature. © 2017 The Authors. Published by Elsevier Ltd