Optimal Allocation of Multiple Photo-Voltaic and/or Wind-Turbine Based Distributed Generations in Radial Distribution Sy
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ORIGINAL ARTICLE
Optimal Allocation of Multiple Photo‑Voltaic and/or Wind‑Turbine Based Distributed Generations in Radial Distribution System Using Hybrid Technique with Fuzzy Logic Controller Rajesh Kumar Samala1 · K. Mercy Rosalina1 Received: 1 October 2019 / Revised: 3 January 2020 / Accepted: 5 October 2020 © The Korean Institute of Electrical Engineers 2020
Abstract In this concept, an enhanced idea is proposed for solving the optimal load flow issues with uncertainties. The proposed hybrid algorithm is the combination of the fuzzy logic controller (FLC) technique and Ant-Lion Optimization Algorithm’s (ALOA). The ALO imitates the hunting mechanism of ant lions in nature. The FLC is trained based on training dataset and testing time. Based on the variation of radial distribution network parameters, the proposed hybrid technique provides the optimal allocation parameters. In this research, photo-voltaic units and wind turbine generations (PV and WT) are considering as distributed generators (DGs). Initially, the multi objective function was defined. That includes voltage deviation, minimization of power loss, and minimization of total operating cost (TOC) and improvement of voltage stability index (VSI). The effectiveness of this proposed hybrid technique was demonstrated on IEEE-33 standard radial distribution systems. With the new hybrid technique, allocation of multi-DGs at different sites, and the optimal load flow in various cases were analyzed. Keywords Distributed generations · Radial distribution system · Load flow analysis · Ant-lion optimization · Fuzzy logic controller · Optimal site and size
1 Introduction Evolution of various methodologies had been discussed by worldwide to associate the grid and electric power market deregulation [1]. The power loss during the transmission from large central power plant is compensated by smallscale power station with DG at load centers [2]. With the assist of green energy majority of the DG energy sources are pollution free. With DG integration in the system having different technical merits. Gas turbine, wind, geothermal, photovoltaic, and biomasses are various types of DGs. Moreover, DGs are available in modular units, and determining locations to be placed is easy, shorter construction times, and small initial cost [3]. Improvement in voltage, power * Rajesh Kumar Samala [email protected] K. Mercy Rosalina [email protected] 1
Department of Electrical and Electronics Engineering, Vignan’s Foundation for Science, Technology and Research (Deemed to be University), Vadlamudi, Guntur 522213, India
loss reduction, power quality enhancement, and enhanced utility system reliabilities are the technical advantages with DG. By establishing DG at right position with proper size, system power losses are reduced [4]. The converter is providing real power to local needs and supplying reactive power for voltage stabilization [5]. While, with DG type will have a significant solution on power system quality. Unsuitable site and capacity will leads to
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