Optimal sizing of photovoltaic distributed generators in a distribution system with consideration of solar radiation and harmonic distortion

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• 作者：Vichakorn Hengsritawat^a ; ^{vchakorn@yahoo.com} ; Thavatchai Tayjasanant^a ; ^{Thavatchai.T@chula.ac.th} ; Natthaphob Nimpitiwan^b ; ^{natthaphob@hotmail.com}
• 关键词：Photovoltaic generation ; Power quality ; Probabilistic approach ; Distributed generation
• 刊名：International Journal of Electrical Power and Energy Systems
• 出版年：2012
• 期刊代码：77_01420615
• 类别：et
• 出版时间：July, 2012
• 卷：39
• 期：1
• 页码：36-47
• 文件大小：1431 K

摘要

This paper presents a probabilistic approach to design an optimal size of photovoltaic distributed generator (PV-DG) in a distribution system. A steady-state voltage stability index is applied to select PV-DG locations. The objective of the proposed technique is to minimize average system active power losses, while considering power quality constraints (i.e., voltage regulation, total harmonic voltage distortion, total demand distortion and harmonic currents). Monte Carlo simulation is applied to acquire solar radiations, ambient temperatures, load demands and substation voltages. The proposed technique is tested on an actual 51-bus medium voltage distribution system in Thailand. From simulations, there is a different solution between selecting the optimal size of PV-DG from with and without considering background harmonics. Also in realistic cases, PV-DGs may improve voltage regulation and decrease losses in distribution systems; however, increase total harmonic voltage distortion values.