A literature review on optimal placement of phasor measurement units

The Phasor Measurement Unit (PMU) is very important tool for monitoring and control of the power system. PMUs give real time, synchronized measurements of voltages at the buses and also current phase values which are incident to those buses where these PMUs are located. It is unnecessary and impossible to place PMU at each bus to estimate the states because the PMUs and communication facilities are very costly. It is necessary to determine the minimum number of PMUs for entire observability of the power network. The optimal placement of PMUs (OPP) problem solved by various techniques such as mathematical programming, metaheuristic techniques. A literature review on these technologies to solve OPP problem is proposed in this paper.