Study on Voltage Stabilization of Tibet Nyingchi Power Grid Based on PSASP

With the economic growth of Nyingchi, Tibet, the electric power grid has been quickly developing. As the result, the regional integral connection of has been achieved, its scales and the structure becomes bigger and more complex than before, in which the commerce and the civil power loads are main kind of power loads. In order to get the operation of Nyingchi power grid more security and stability. The new criterion method of small disturbance voltage stability in power system analysis software package(PSASP) is applied to calculate and analyze the voltage stabilization detailedly for Nyingchi power grid to recognize the weak buses and areas. Therefore, the voltage stability margin is carried out. Finally, some significant suggestions are offered for the system operation and dispatching, as well as the monitoring and control of the voltage stability.