A Review of Grid Tied PV Generation on LV Distribution Networks

摘要

Renewable generation, at the customer side of the meter, continue to gain interest worldwide. Distribution network (DN) performance analysis, under distributed photovoltaic generation (DPVG), is paramount important to ensure DN security and reliability. This paper presents a broad review of issues, with an emphasis on grid voltage, associated with DSPVG, and proposed solutions. There has not been a comprehensive literature review of DSPVG, particularly in South Africa (SA). There is a need to quantify impacts and expectations of DSPVG connection on three phase radial low voltage (LV) DNs. In this paper, circuit diagrams and mathematical expressions for voltage rise and drop analyses, are detailed, with a comprehensive range of proposed and commercially available mitigation solutions. These include; active power curtailment (APC), reactive power control (RPC) and droop-based voltage control. APC is more efficient and effective for LV DNs. Sophisticated strategies combining different standalone control methods, were proposed in literature, for increase of DSPVG penetration, both locally, in residential home, and globally.