Application Research of Off-grid Home Photovoltaic Power System in Shaanxi Northern Region

Ke Cheng, Liu Hao, Jie Yang

School of Power and Energy, Northwestern Polytechnical University, Xi’an, China.
Shaanxi Regional Electric Power Group Co., LTD., Xi’an, China.

DOI: 10.4236/epe.2013.54B037                

Abstract

Because working performance of off-grid home photovoltaic power system is influenced by factors of solar radiation, ambient temperature and installation angle, this research established power supply model, analyzed working performance and optimized system configuration, by referencing weather conditions of Yulin and Yan’an and those factors. Results showed that under given solar radiation and ambient temperature, difference of installation angle can cause 30% to 40% difference of performance. In order to meet power demand, installation angles of Yulin and Yan'an were selected as 40 degree and 30 degree, and annual output power were 1.44 kWh/Wp and 1.32 kWh/Wp. Based on those results, the configuration of Yulin and Yan'an was 150 Wp and 170 Wp, and annual output power was 172.70 kWh and 179.66 kWh. Systems optimized above can meet the mid-scale demand in Shaanxi northern region and build theoretical foundation of application.

Keywords

Off-grid Home Photovoltaic Power System; Photovoltaic; Solar

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	H. Sheng and Z. Q. Zeng, “Solar photovoltaic technology,” Beijing: Chemical Industry Press, 2005.
[2]	A. Li, “Solar Photovoltaic Systems Engineering,” Beijing: Beijing Industrial University Press, 2001.
[3]	B. Z. Wang, “Calculation of solar radiation of the slope ground Solar Energy,” Vol. 3, 2000, pp. 16-17
[4]	J. Q. Wang, “Stand-alone Photovoltaic Power System Power Electronics Technology,” Vol. 3, 2009, pp. 53-47.
[5]	W. T. Li, “Analysis and Calculation of the Best Angle of Photovoltaic Array of Village without Electricity in Qinghai Province,” Qinghai Technology, Vol. 4, 2003, pp. 35-37.