Optimal load shedding technique for an islanding distribution system by using Particle Swarm Optimization

Power system is heavily loaded with increase in electricity demand. Frequency instability during islanding scenarios is an important issue to be addressed. Frequency instability happens when the power balance between generation and load demand is not met. During islanding, Under-Frequency Load Shedd...

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Bibliographic Details
Published in:	2017 3rd International Conference on Power Generation Systems and Renewable Energy Technologies (PGSRET) pp. 154 - 158
Main Authors:	Mohamad, H., Isa, A.I. Md, Yasin, Z. Mat, Salim, N.A., Mohd Rahim, N.N.A.
Format:	Conference Proceeding
Language:	English
Published:	IEEE 01-04-2017
Subjects:	Distributed Generator (DG) Flowcharts Generators Islanding Load modeling Particle swarm optimization Particle Swarm Optimization (PSO) Power system stability PSCAD Rate of Change of Frequency (ROCOF) Under-Frequency Load Shedding (UFLS)
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Summary:	Power system is heavily loaded with increase in electricity demand. Frequency instability during islanding scenarios is an important issue to be addressed. Frequency instability happens when the power balance between generation and load demand is not met. During islanding, Under-Frequency Load Shedding (UFLS) technique is implemented to stabilize the system frequency and to ensure uninterrupted power supply to the customers. This paper proposes an optimal load shedding approach using Particle Swarm Optimization (PSO) technique for islanded mode of operation. The technique determines the optimal amount of load that needs to be shed considering power imbalance. The proposed load shedding approach is developed using MATLAB and is validated on distribution system modeled using PSCAD software. Simulation results show that the proposed PSO based approach was able to stabilize the system frequency by shedding the load optimally.
DOI:	10.1109/PGSRET.2017.8251819