Generator content

First, introduction

(1) Research background

In recent years, scientific research has focused on tackling global warming. The massive emission of carbon dioxide is the root cause of global warming. Scientists are trying to find suitable renewable energy sources to replace fossil fuels to slow this trend. Renewable energy storage systems should have the advantages of high energy density and high security. Due to the gradual improvement of the system and the continuous development of science and technology, the solar photovoltaic industry has developed rapidly [1]. Since the 1980s, developed countries such as the United States, Germany, Japan and Canada have developed long-term development plans, which have greatly promoted the development of the photovoltaic industry. Over the past decade, the average annual production of solar cells worldwide has increased by 33%. In 2004, the world's solar system capacity exceeded 1,200 megawatts, and continued to grow to more than 600 megawatts in 2005. By the end of 2006, global PV capacity exceeded 8 MW. With 5gwp, more than 80% of grid-connected photovoltaic power generation occupies a leading position in the world photovoltaic market. Grid-connected photovoltaic power generation system is the only way to achieve the development of large-scale photovoltaic power generation [2].

China's energy reserves are far below the world average, accounting for only 10% of the world's total reserves [3]. The most attractive and resource-rich solar energy has many unparalleled advantages. In recent years, the state advocates the scientific concept of development, the application of new energy technology, and vigorously develop renewable energy. The photovoltaic industry in Jilin Province is developing very rapidly, mainly concentrated in large public buildings. Solar photovoltaic system installation process is simple, no mechanical moving parts in the working process, large fuel consumption, large emissions. Compared with wind energy and other new energy production technologies, its resources are the richest and cleanest, so photovoltaic power generation technology has good social and economic benefits [4].

(2) The purpose and significance of the research

"China National Green Building Innovation Award Management Measures" clearly defines the significance of green buildings, that is, to provide healthy, clean, comfortable and pollution-free living and working space in People's Daily activities [5], affected by environmental factors, policy factors and application scope of Jilin Province, due to the incomplete simulation and benefit analysis of photovoltaic power generation projects in Jilin Province, it is impossible to predict the photovoltaic development in Jilin Province The benefits of electrical projects. Due to the lack of accurate and accurate data analysis as a foundation and targeted services, many developers are afraid to try this area. Therefore, the application and promotion of photovoltaic power generation technology in our province is very slow. transient system simulation (TRNSYS) program) and a photovoltaic engineering example, the system can clearly analyze the advantages of the photovoltaic power generation industry [6], and make use of the powerful data processing and collection functions of virtual instruments, through the comparison and analysis of the data obtained by the two methods, the maximum power point tracking method is obtained. It improves the scientificity and accuracy of the data, improves the integrity of the photovoltaic power generation simulation, improves the power generation efficiency, and visually analyzes the benefits of the project. In order to solve the problem of slow development of photovoltaic industry in Jilin Province, developers can boldly carry out photovoltaic project construction experiments to speed up the development of photovoltaic industry.

(3) Research status at home and abroad

1. Domestic research status

Most of China's solar photovoltaic power generation systems are energy utilization systems that solve the lives of people in remote areas and some enterprises. The research of solar photovoltaic power generation system is still in its infancy. The photovoltaic systems that are built provide very little electricity to a small number of users and produce very little electricity. Its role in the entire power grid is negligible, and it can be considered that it will not affect the power grid [10]. The research of photovoltaic grid-connected power generation technology is highly valued." During the 11th Five-Year Plan period, China conducted in-depth research on grid-connected technology and large-scale photovoltaic power plants. Encouraging progress has been made. On this basis, China has built 5 kW and 10 kW grid-connected photovoltaic demonstration power stations. China's Ministry of Science and Technology has listed photovoltaic power generation technology as a national key development topic and increased investment in photovoltaic power generation system design. R& controller research and development and the development of light inverters have accelerated the development of the photovoltaic industry, the state has invested a lot of money, and many important provinces have built photovoltaic demonstration power stations, vigorously promote the development of the photovoltaic industry in the province, and have made important contributions to China's photovoltaic industry.