Hourly PV Power and Dust Accumulation Dataset — Laghouat, Algeria, February–August 2022

Hourly dataset from a six-month dual-panel photovoltaic soiling experiment at LACoSERE Laboratory, Amar Telidji University of Laghouat, Algeria (33.8°N, 2.9°E, 767 m a.s.l.), spanning 17 February to 17 August 2022. Two identical SolarWorld SW-85 polycrystalline silicon modules were monitored continuously: one maintained clean (daily manual cleaning), one left exposed to natural dust accumulation. Dust surface density was quantified gravimetrically on 48 occasions using a KERN ABS 220-4N analytical balance (0.1 mg resolution) and surrogate glass collection plates; the sparse measurements were interpolated to hourly resolution using PCHIP interpolation. The dataset contains 4,368 hourly records and 14 columns: local timestamp, measured and PCHIP-reconstructed dust surface density, ambient temperature, cell temperature (NOCT model), in-plane irradiance (G_POA), relative humidity, wind speed, cloud cover, precipitation, clean-panel power, dusty-panel power, and two normalised power columns. Meteorological variables are from Open-Meteo ERA5 reanalysis. Dust density peaked at 22.54 g m⁻² in late June. Mean daytime power loss was 13.4%; maximum instantaneous loss was 29.7%.本数据集为阿尔及利亚拉古亚特阿玛尔·泰利吉大学LACoSERE实验室开展的双组件光伏板积污实验的小时级数据，实验周期为六个月，实验点位地理坐标为北纬33.8°、东经2.9°，海拔767米，数据覆盖时段为2022年2月17日至8月17日。 实验采用两块完全一致的SolarWorld SW-85型多晶硅光伏组件进行持续监测：其中一块每日开展人工清洁以保持表面洁净，另一块则置于自然环境中任由粉尘自然积附。研究人员使用KERN ABS 220-4N型分析天平（分辨率0.1mg）与替代玻璃采集板，通过重量法完成了48次粉尘面密度的定量测量；针对这些稀疏的实测数据，采用分段三次Hermite插值（PCHIP）法将其插值至小时级分辨率。 本数据集共计包含4368条小时级记录，涵盖14个数据列：本地时间戳、实测粉尘面密度与PCHIP插值重构的粉尘面密度、环境温度、电池温度（采用NOCT模型计算）、平面内辐照度（G_POA）、相对湿度、风速、云量、降水量、洁净组件输出功率、积污组件输出功率，以及两组归一化功率数据。所有气象变量数据均取自Open-Meteo ERA5再分析数据集。 实验期间粉尘面密度峰值出现在6月下旬，达22.54 g·m⁻²；日间平均功率损失率为13.4%，瞬时最大功率损失率达29.7%。