Joint Optimization of Tilt Angle and Capacity Ratio for Large-Scale Centralized Photovoltaic Power Plants in Desert Areas

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Chinese explanation / 中文解读

中文解读待补充：本站会优先为光伏效率、钙钛矿太阳能电池、储能技术、太阳能热利用、BIPV、并网技术等高价值论文补充中文说明。

Original abstract

Desert areas like Karamay in Xinjiang have high surface albedo, frequent dust storms, and extreme summer heat. These conditions make photovoltaic plant design different from conventional sites. This work investigates the optimal tilt angle and capacity ratio for a 100 MW fixed‑tilt bifacial PV plant in such an environment. The electrical configuration follows IEC standards. Fifty‑seven simulation scenarios covering a broad range of tilt angles and capacity ratios are run in PVsyst 7.4. The analysis focuses on in‑plane irradiation, annual grid‑connected energy, and levelized cost of electricity. The results show a flat‑bottomed optimum region defined by a tilt angle of 36° to 37° and a capacity ratio of 1.20 to 1.25. The minimum LCOE is about 0.1842 yuan/kWh, roughly 1.3% lower than a conventional design. The high desert albedo shifts the optimal tilt approximately 9° below the local latitude, while the rear‑side gain of bifacial modules contributes an extra 8% to 12% of energy yield. These findings provide a quantitative basis for customizing large‑scale PV plants in similar desert and Gobi regions.

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