Optimal Load Shedding in Uncertain Power System to Improve Voltage Stability | Original Article

ABSTRACT:

This paper presents an efficient technique for optimum load shedding in an uncertain or dynamic power system network. If the normal control actions to improve the voltage stability are exhausted then the load shedding option works as the last line of defence to get the desired stability margin in power systems, hence it enables the system to withstand under worst loading conditions. In this paper a sensitivity index has been used to get the optimal buses on which load to be shed at heavy load conditions to get the desired value of voltage stability. An optimization problem aiming to minimize the load shedding at selected buses while satisfying all the inequality constraints to ensure the optimal power flow in the system has been developed in this paper. The load shedding is done on such buses whose sensitivity is higher. Black Hole algorithm has been used for optimum load to be shed at selected load bus. The proposed technique is implemented on IEEE 30 bus test system.