An Overview Of Photovoltaic Power Plant (PV) Connection To HVDC Grid

Guechi, Abdelghani; Saaidia, Mohammed; Benchouia, Nedjem-Eddine

doi:10.1109/ssd54932.2022.9955893

Cited by 3 publications

(1 citation statement)

References 11 publications

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“…In contrast, the DC collection of PV energy is becoming a promising direction due to its advantages of higher efficiency and fewer intermediate conversion devices. When large-scale PV power is collected by high-power DC-DC converters, and then transmitted over long distances by DC lines, it forms an all-DC collection and grid connection [3]. It can effectively avoid the problems of reactive power support and low-frequency oscillation in the process of AC collection and transmission.…”

Section: Introductionmentioning

confidence: 99%

Studies of large‐scale DC connected photovoltaic power system based on multi‐modular cascaded DC‐DC converter

Liu

Chen

Shi

et al. 2023

IET Generation Trans & Dist

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DC collection and transmission is one of the major development directions of large‐scale photovoltaic (PV) power system. In order to achieve low‐cost, high‐efficiency and long‐distance transmission of PV power, this paper adopted a DC grid‐connected topology by using multi‐modular cascaded DC‐DC converters, forming an input‐independent and output‐series (IIOS) system. In this system, an LLC type DC‐DC converter based on IGCT and magnetically integrated transformer was proposed in this paper, which can significantly increase the capacity, efficiency and power density of DC‐DC converter. And the equalization unit based on half‐bridge topology was adopted for the case of uneven irradiation of the PV inputs. In addition, this paper proposed an equalization control method based on the Nearest Level Modulation (NLM), which greatly simplifies the design of the acquisition and control system. Furthermore, the parametric design of a 50MW PV system was presented, and the simulation was carried out to verify the feasibility and advantages of the system in this paper. The proposed IIOS system is more suitable for high‐capacity, long‐distance PV power transmission, which can serve as a reference for the development of large‐scale photovoltaic systems.

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Section: Introductionmentioning

confidence: 99%