Abstract
A method for optimize phasor measurement unit placement, includes two phase, calculating a degree of each node of a power system; selecting a node with maximum degree as a center and propagate to the entire power system so as to form a spanning tree; selecting a feasible power dominating set (PDS) of minimum cardinality for the spanning tree in the Phase I. In Phase II, use the Artificial Bees Colony Algorithm. According to the minimum PDS, calculate a fitness functions by the equation fiti = { 1/|f i|+1, fi < 0; f i , f i ≥ 0 generate a nearby solution randomly through Vij=Xij+ μ(Xij-Xkj); and select a better solution by using greedy search and probability search by the equation Ph = fiti/∑fiti, j=1:SN; abandoning the current solution as not even improving the solution in the given time of the iteration number and generate a new solution randomly Xhj=Xminj+rand[1,0](Xmaxj−Xminj) in order to prevent a local optimum. The best solution will be hold until meeting the termination condition.