An optimal PMU placement technique for the topological observability of a part of the NER grid of India

This paper considers the analysis of network observability and optimum PMU placement problem under normal operation conditions. The aim of the optimum PMU placement (OPP) problem is to provide minimum number of PMU installations to ensure full observability of the particular power system. The approach used in this paper is based on the topological observability of the system. The technique used is based on integer linear programming. The proposed technique has been firstly verified on IEEE 14- bus and New England 39-bus system. It has then been implemented on a part of the 77- bus North Eastern grid of India. The part considered in the paper comprises of the states- Nagaland, Manipur, South Assam, Mizoram, Tripura, Meghalaya and Palatana. Lines which are currently under construction and under outage have not been considered.