Parallel Multi-Area State Estimation

A parallel multi-area approach is presented in this paper for static state estimation of the power system. Because of a computational parallelism, the parallel multi-area approach significantly speeds up the computational process of state estimation. Furthermore this approach would help alleviate the perennial problem of insufficient computational power at the control center by down-loading most of the computational load of state estimation to relatively underused local computers. The paper also reports a summary of simulation experiments of the proposed parallel multi-area approach. The speed-up ratio and the parallel efficiency of the approach are obtained and the effects of the speed of telecommunication between computers upon these quantities are discussed.