Techno-economic potential evaluation of small-scale grid-connected renewable power systems in China

• Published in: Energy conversion and management 2019-09, Vol.196, p.430-442
• Main Authors: Ma, Weiwu, Fan, Jiaqian, Fang, Song, Liu, Gang
• Format: Article
• Language: English
• Subjects: Alternative energy sources; Biogas; Cities; Costs; Economics; Electric power generation; Electric power rates; Electric power systems; Electricity; Electricity pricing; Emissions control; Energy conservation; Energy costs; Energy resources; Energy shortages; Energy sources; Environmental performance; Evaluation; Green development; Photovoltaic cells; Photovoltaics; Potential evaluation; Prototypes; Renewable energy; Renewable power systems; Sensitivity analysis; Simulation; Solar cells; Solar energy; Sustainable development; Systems analysis; Techno-economic analysis; Territory; Turbines; Wind power; Wind speed; Wind turbines
• ISSN: 0196-8904; 1879-2227
• DOI: 10.1016/j.enconman.2019.06.013

•A techno-economic evaluation model of renewable power system was build.•Renewable resources data of 20 Chinese cities were gathered as modeling inputs.•The development potential of renewable power system is analyzed.•PV system shows a better performance in high altitude or low latitude cities.•BG is suitable for most cities, and WT is suitable for southeast coastal cities. With the issues of energy shortage and environmental pollution becoming more and more serious, renewable power generation system plays an important role in energy conservation and emission reduction. The widespread application of renewable power systems meets the requirements of current developments in China. The development of renewable power systems is still faced with a certain degree of economic and policy obstacles such as high costs and ossified subsidy, etc. China’s vast territory also determines that different regions have different objective development conditions, these uncertainties are not conducive to the development of renewable power systems. In this paper, 20 cities in five typical climate zones in China were selected. In consideration of climate and electricity tariff, the technical, economic and environmental performances of three types of the community-level grid-connected renewable power prototypes are compared by a full-year simulation, including basic photovoltaic power system, wind turbine system and biogas power system. Then, a comprehensive evaluation index is developed to evaluate the energy systems potential, which integrates all the technical, economic and environmental performance indicators. The advantages and disadvantages of renewable power system development in different regions were analyzed, to provide reference for China’s green development and policy-making.It is found that biogas power system has comprehensive advantages in costs and electricity production for most cities,as the comprehensive evaluation index of BG in most cities is higher than that of PV and WT. In contrast, photovoltaic power system is not an economic option for the mojority of cities, except several cities where are rich in solar energy resources, such as Lhasa and Sanya.The comprehensive evaluation index of the photovoltaic system in Lhasa is 0.45, which is only lower than the wind power system in Shanghai among the 60 systems. In the southeast coastal cities with high average annual wind speed, such as Shanghai and Shenzhen, the wind power system has great potential for develop