A model to determine soiling,shading and thermal losses from PV yield data

作     者：S.Ghosh J.N.Roy C.Chakraborty 

作者机构：Advanced Technology Development CentreIndian Institute of Technology Kharagpur721302India Department of Electrical EngineeringIndian Institute of Technology Kharagpur721302India 

出 版 物：《Clean Energy》 (清洁能源（英文）)

年 卷 期：2022年第6卷第2期

页      面：372-391页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 080802[工学-电力系统及其自动化] 0808[工学-电气工程] 08[工学] 0807[工学-动力工程及工程热物理] 

基　　金：This work was supported by the Department of Science and Technology,Government of India under grants DST/RCUK/JVCCE/2015/02(C) DST/RCUK/SEGES/2012/04(G) 

主　　题：solar photovoltaics solar PV plant soiling losses solar shading losses solar PV system losses 

摘      要：Apart from being a clean source of energy,photovoltaic(PV)power plants are also a source of income generation for its investors and ***,mitigation of system losses is crucial for economic operation of PV *** losses due to soiling,shading and temperature in PV plants go as high as 50%.Much of these losses are unaccounted initially,which can jeopardize the economic viability of PV *** paper aims to provide a model to determine losses due to soiling,shading and temperature using quantities like irradiance,cell temperature,DC power and current,which are readily available in PV yield data captured by the remote monitoring system,without involving any additional sensors or *** this study,soiling,shading and thermal losses were calculated using PV yield data obtained from a 30-kWp PV plant located in Kharagpur,*** results showed soiling and shading losses as high as 25.7%and 9.7%,respectively,in the month of *** loss was verified by measuring transmittance loss of coupon glasses installed in the vicinity of the *** loss was verified by shadow simulation using an architectural tool(SketchUp).Array thermal loss obtained using the proposed methodology was found to be in line with the estimated value obtained from PVsyst ***,using time-series data,the energy losses corresponding to soiling,shading and temperature effects were calculated by a numerical-integration *** monetary loss due to these energy losses thus obtained provides criteria for deciding when to mitigate the sources of these losses.