The Analysis Of The International PV Trade Competition Pattern And PV Market Of China Based On Complex Network Theory

Since 21 st century, with the rapid development of PV industry, the international PV trade competition has become more and more complicated. The occurrence of financial crisis and European debt crisis made profound influence on the competition pattern of the international PV trade. In this case, the "anti-dumping and anti-bribery investigation" by Europe and the United States to China’s export PV products affected the export trade of domestic PV products directly, and impacted on the domestic PV industry seriously. Therefore, exploring the PV products trading system within the scope of the world and revealing the new features in international PV trade competition pattern play a significant role in reshape the supply and demand of PV industry and balance the pattern of PV market. In addition, the dynamic evolution of correlation among Chinese PV enterprises is explored to analyze the system risk of the PV market. We further study the factors that affect the development of PV enterprises. It is helpful to enhance the sustained profitability and ability of PV enterprises to resist risk.The evolution and characteristics of international PV trade competition pattern is studied in this paper from the perspective of complex network. We build the undirected and weighted trade competition network by using the export trade value of PV products during 2000-2014. And then the generalization of several important indicators, including degree distribution, community structure, stability of communities are discussed. In addition, the evolution of major countries’ trading competition importance and the ranking of largest competition intensity between countries are studied. Finally, we analyze the characteristics and trends of China’s PV export trade relations, the results show that although the ups and downs of phased development of China’s PV industry made a great change in PV export trade relations, the gradually diversified PV export trade and the transformation of the main trade structure can defuse the situation of excess production capacity, and deal with trade frictions.The dynamic evolution of correlation among Chinese PV enterprises is explored by using of random matrix theory and daily closing price of stocks of Chinese PV enterprises during 2007-2014. By observing the statistical properties and changes of correlation coefficient, eigenvalue and eigenvector of the correlation matrix, we find that stock returns made a strongly related behavior in volatile periods, and the system risk of PV market increased. In addition, the threshold networks are built in three different periods, respectively. Then we contrast the topology characteristics and community structure of different network, and identify the important PV enterprises in different periods. Finally, we focus on the actual situation of the enterprise management to analyze the reason why these enterprises become important and put forward some suggestions for the stable development of PV enterprises.