Simultaneous design of the WAMS components in the modern power networks with the aim of minimizing the total cost

Incremental increasing use of the electrical energy and restructuring the power networks and the problems that they have been brought with them, cause increased the power operator’s interest to use of WAMS instead of SCADA. One of the main issues in the WAMS is the cost reduction of the optimal placement of PMU and correlated communication infrastructure. In this paper, a new method is presented for WAMS designing, with the aim of cost reduction. For this purpose, the greedy algorithm is used for optimal placement of PMUs and simultaneously, with the use of the Bellman-Ford algorithm, minimum communication infrastructure is designed so that the total cost of WAMS designing is reduced. Also the optimum location of the PDC is determined with the Bellman-Ford algorithm. This method is proposed in the normal operation condition and also in N-1 contingency conditions ( e.g. a single PMU loss and a single line outage). Simulations are conducted on the IEEE 30- and 118-bus power networks and the 230kv and 400kv of the Isfahan power network. Simulation results show good performance of the proposed method.