Optimum Arrangement Scheme of PMU and Voltage Stability Evaluation in Region Electric Network

Considered the optimum arrangement scheme of PMU in a region of electric network, this paper primary introduced the definition of voltage stability's weak nodes and their region through a tidal current emulation and calculation method. The optimum arrangement scheme of PMU in electric network was also given. The Least-square procedure method was used in solving the equivalent resistance, which completed the weak node's dynamic voltage stability evaluation. The estimative accuracy of the scheme has been indicated according to the result of simulating test, which presents a theory method lying the foundation for the dynamic voltage stability evaluation of wide region electric power network.