Abstract
Solar energy is going to be a major component of global energy generation. Loss due to dust deposition has raised a great concern to the investors in this field. Pre-estimation of this reduced generation and hence the economic loss will help the operators’ readiness for efficient and enhanced economic energy management of the system. In an earlier article, a physics–based model is proposed for assessment of dust accumulation under various climatic conditions which is validated by data of a single location. In this paper, the universality of this model is established and is used to demonstrate the effect of generation loss due to dust deposition and of cleaning. Variation in the soiling pattern due to climatic covariates has also been studied. Generation loss is calculated for Solar Photovoltaic power plants of different capacities at various locations in India. Finally this model has also been extended to predict the generation accounting for the soiling loss in Photovoltaic system. All the calculated and predicted results are validated with the measured values of the above plants.
Highlights
Conventional energy resources contribute major component of global energy [1,2] their adverse effect toward environment by increasing carbon footprint, and green house gasses is of utmost concern
Data captured from Reserve Bank of India (RBI), Kolkata are used to validate the model for with and without soiling effect of the PV modules
Soiling is an important parameter for PV integrated system as it invites yield loss which is reversible but not negligible
Summary
Conventional energy resources contribute major component of global energy [1,2] their adverse effect toward environment by increasing carbon footprint, and green house gasses is of utmost concern. Global socio-political turmoil put an obstacle in importing and exporting these energy sources. Due to all these reasons, renewable energy generation has made its way towards the lion share of total generation, and it is expected that it becomes more than two-third of total generation by 2040 [3]. Particulate matter with diameter less than 500 μm is called as dust [10]. It can be agricultural emissions, algae, bacteria, bird droppings, carpet, clay, engine exhaust, fibers, sand, textile, and pollen [11]. Deposited dust on a module reduces the transmittance of the module cover and allows less amount of sunlight to reach the solar cell which in turn abates the output rapidly [10]
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