Study on Voltage Regulation Measures of Distribution Lines by Implementation of a Interconnection Device for Photovoltaic System

초록

This paper presents a voltage-regulation method for distribution lines using photovoltaic (PV) output control via a supplementary interconnection device. The characteristics of distributed generation (DG) inverters connected to distribution networks have evolved through three generations. First-generation inverters lack output-control functions and cannot regulate voltage during normal operation. To mitigate the adverse voltage impacts of DG on distribution feeders, this study proposes a method to control the PV output current injected into the distribution line through the interconnection device. Active-power control was implemented by adjusting the inverter output via the device, and its effectiveness was validated through simulation studies. The results confirm that the proposed approach can achieve effective voltage regulation of distribution lines and enhance the hosting capacity of distributed generation systems. © The Korean Institute of Electrical Engineers This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.. All Rights Reserved.

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