Optimal placement of PMU's considering sensitivity analysis

This paper presents various aspects of optimal Phasor measurement unit (PMU) placement problem with load sensitivity analysis. Binary integer linear programming based methodology for optimal placement of PMU in a given power network for full observability of that network is presented in this paper. First, complete observability of the given network is formulated conventionally and then, zero injection bus constraints are added in conventional formulation. Load sensitivity analysis is done using Newton-Rapson Load flow and most sensitive buses based on load sensitivity analysis, are sorted out. Minimum number of PMU's, less than the optimal number (without considering load sensitivity) are placed such that it covers most sensitive buses and also most of the buses are observed. In this paper optimal PMU placement problem considering sensitivity analysis is presented for IEEE-14 bus and IEEE-30 bus systems.