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Design and Analysis of a 1MW Grid-Connected Solar PV System in Ghana

加纳1MW并网太阳能光伏系统的设计与分析

【作       者】:

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【机       构】: 非洲技术政策研究网
【承研机构】:

【英文机构】: African Technology Policy Studies Network
【原文地址】: https://atpsnet.org/wp-content/uploads/2017/05/wps78.pdf
【发表时间】:

2013-05-03

摘要

This study aimed at developing a standard procedure for the design of large-scale institutional grid-connected solar PV systems using the roofs of buildings and car parks. The standard procedure developed was validated in the design of a 1MW grid-connected solar PV system for Kwame Nkrumah University of Science and Technology (KNUST), Ghana. The performance of the 1MW grid-connected solar PV system was also simulated over the guaranteed life of the system using RETScreen Clean Energy Project Analysis software,designed by Natural Resources Canada. The project began with a prefeasibility study of a 1MW grid-conducted solar PV system using RETScreen software which has a broad database of meteorological data including global daily horizontal solar irradiance and also a

database of various renewable energy systems components from different manufacturers.An extensive literature review of solar PV systems with a special focus on grid-connected systems was conducted after which the procedure for the design of institutional large-scale grid connected solar PV systems was developed. The developed procedure was used in the design of a 1MW grid-connected solar PV system for KNUST-Ghana. The technical and financial performances of the 1MW grid-connected solar PV system were simulated using

the RETScreen software. The preliminary analyses of the simulation results showed that the project is socially beneficial to the community in this case the university with an annual energy yield of about 1,159MWh, which is about 12% of KNUST’s annual electricity consumption.The process of electricity generation from solar PV saves about 792 tonnes of CO2. The yield factor, performance ratio and capacity factor were other technical performance parameters considered. Under the prevailing tariff conditions in the country, the project is not financially viable without incentives such as grants and feed-in tariffs.

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