Reliability improvement in radial electrical distribution network by optimal planning of energy storage systems

• Published in: Energy (Oxford) Vol. 93; pp. 2299 - 2312
• Main Authors: Saboori, Hedayat, Hemmati, Reza, Jirdehi, Mehdi Ahmadi
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 15.12.2015
• Subjects: algorithms; energy; Energy not supplied; Energy storage system; Particle swarm optimization; planning; Radial electrical distribution network; Reliability; viability; Radial electrical distribution network; Energy not supplied; Energy storage system; Reliability; Particle swarm optimization
• ISSN: 0360-5442
• DOI: 10.1016/j.energy.2015.10.125

This paper provides an optimal approach to denote the location and size of ESSs (energy storage systems) with the intention of reliability improvement in radial electrical distribution networks. The proposed optimal ESSs planning is addressed as a minimization problem which aims at minimizing the cost of ENS (energy not supplied) as well as ESSs costs at the same time, subject to safe operation of the network; where, the safe operation is guaranteed through satisfying security constraints such as voltage and line-flows limits. The minimization problem is mathematically formulated as a mixed-integer nonlinear programming and solved by PSO (particle swarm optimization) algorithm. A comprehensive sensitivity analysis is carried out on the results such as ESSs numbers, ESSs cost and reliability parameters. Simulation results demonstrate the viability of the proposed method in the real networks. Results also indicate the positive impact of ESSs on the network reliability. The proposed ESSs planning significantly reduces the ENS of the network and can be employed to deal with low reliability issues in the real networks. •Optimal location and size of energy storage systems in denoted.•Planning maximizes reliability through minimizing energy not supplied (ENS).•Problem is formulated as a mixed integer problem and solved using PSO.•Simulations are carried out on a radial electrical distribution network.•Results indicate the positive impact of ESSs on the network operation.