An optimal scheme for coordination of load restoration and SPA reduction using TLBO Algorithm

Subject Areas : Power Engineering

Hadi Hoseinpour ¹ , Mohammad Reza Esmaili ² , Amin Khodabakhshian ³

1 - Department of Electrical Engineering, University of Isfahan, Isfahan, Iran
2 - Esfahan Regional Electric Company (EREC), Isfahan, Iran
3 - Department of Electrical Engineering, University of Isfahan, Isfahan, Iran

Received: 2022-03-20 Accepted : 2022-06-15 Published : 2022-05-22

Keywords: load restoration, Power system restoration, Energy not supplied (ENS), Standing Phase Angle (SPA),

Abstract :

One of the most important concerns for power system operators is how to execute the restoration process after having a blackout. In doing so, the parallel restoration is the most common method in which the desired islands are first formed and then the load of each section is restored separately at the same time. In the next step, the islands must be synchronized with having a minimum standing phase angle (SPA) between them. To do this, an optimal multi-objective scheme is defined in this paper in order to coordinate both load restoration and SPA reduction problems. The objective functions of the proposed model are the minimization of the static phase angle and the energy not supplied in which the desired constraints are also considered. For optimization process the teaching and learning optimization algorithm (TLBO) is used as a proposed technique and compared with some other intelligent algorithms. The simulations are performed by creating a connection between MATLAB software and DIGSILENT. The results obtained on the IEEE 39-bus power system show the efficiency of the proposed model.

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