Voltage stability improvement to power systems with energy storage systems

Due to the deregulation of the electricity market, the power system is recently placed under more severe operating conditions than ever before. Therefore, voltage stability analysis is a major concern in power system operation. This paper proposes a method to improve the voltage stability of the power system by using the active and reactive power information of the transmission line in accordance with the voltage stability index. Installing a battery at the load substation in order to inject the proper amount of active power and reactive power can improve the voltage stability of the system as shown by simulations.

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