Economic analysis on design and operation of pad mounted transformer integrated with awning in photovoltaic station

Huadian Technology ›› 2019, Vol. 41 ›› Issue (1): 21-26.

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Economic analysis on design and operation of pad mounted transformer integrated with awning in photovoltaic station

1.Suzhou Zhongkang Electric Power Development Company Limited, Zhangjiagang 215600, China; 2.Suzhou Hengkang New Energy Company Limited, Suzhou 234000, China

Published:2019-01-25

Abstract

Abstract:

Pad mounted transformer is an important equipment for photovoltaic power plants which can boost the low voltage AC of photovoltaic inverter to high voltage AC. Considering the operating characteristics of largescale photovoltaic power plants and the limited land area, it put forward an arrangement of photovoltaic modules on top of the pad mounted transformer for integrated power generation. It can generate power by using solar energy while meeting the shading function. Taking a 20MW PV plant as an example, detailed analysis and calculation of the project’s system efficiency, output characteristics, and project investment income are made.The results show that the installation of photovoltaic panels on the top of pad mounted transformer can reduce the winding temperature by around 20℃, and the return on investment is expected to be 17% under current electricity price. Comprehensively shows that the program has greater practical value.

Key words:

photovoltaic plant, pad mounted transformer, integrated power generation, winding temperature, investment income, system efficiency

CHEN Jianguo1，ZHANG Guomin1，MA Hui1，HAN Bing2，ZHUO Gang1，FENG Hui1.

Economic analysis on design and operation of pad mounted transformer integrated with awning in photovoltaic station

[J]. Huadian Technology, 2019, 41(1): 21-26.

Economic analysis on design and operation of pad mounted transformer integrated with awning in photovoltaic station

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