Assessment of Roof-Top Photovoltaic Installations on the Total Harmonic Distortion of Low Voltage Distribution Networks

2021 56th International Universities Power Engineering Conference (UPEC) Pub Date : 2021-08-31 DOI:10.1109/UPEC50034.2021.9548229

Sadeq D. Al-Majidi, Mohammed Kh. Al-Nussairi, Jabber Raheem Rashed, M. Abbod

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引用次数: 2

Abstract

The connections of roof-top photovoltaic (PV) systems with low voltage distribution networks have been raised dramatically in the last years due to decreasing in the capital cost and investing in the operating cost. However, the power generation of this source is variable owing to the solar irradiance dependency. This variation in the PV generation can cause a Total Harmonic Distortion (THD) into the low voltage distribution network. In this paper, the effect of roof-top PV system installations on the total harmonic distortion is assessed under different weather conditions. Regarding this, the voltage and current of an on-grid PV system composited at the roof-top of Brunel university London campus are measured and analysed for sunny and cloudy days. Furthermore, this installed PV system is developed based on MATLAB/Simulink. The results prove that the solar irradiance of the surround PV system has a significant impact on the THD-current when compared with the THD-voltage.

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屋顶光伏装置对低压配电网总谐波畸变的评估

近年来，由于投资成本的降低和运行成本的降低，屋顶光伏系统与低压配电网的连接急剧增加。然而，由于对太阳辐照度的依赖，该源的发电量是可变的。光伏发电的这种变化会导致低压配电网的总谐波失真(THD)。本文评估了不同天气条件下屋顶光伏系统安装对总谐波畸变的影响。为此，在布鲁内尔大学伦敦校区的屋顶上合成的并网光伏系统的电压和电流进行了测量和分析，在晴天和阴天。在此基础上，基于MATLAB/Simulink开发了光伏安装系统。结果表明，相对于thd电压，环绕式光伏系统的太阳辐照度对thd电流有显著影响。

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2021 56th International Universities Power Engineering Conference (UPEC)

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