Regional energy supply-demand model and dynamic analysis under influence of time delay

Considering the complex relationship among energy supply,demand and prices,and the time delay for energy producing enterprise to regulate the energy supply after getting information on market demand,the regional energy supply-demand model under the influence of time delay is set up.By studying its dynamic behavior from the stability of equilibrium point,phase diagram and Dulac function,and by analyzing the stability of equilibrium points by main monomial analysis,a stable condition for energy supply,demand and import can be reached.For the given energy balance of the two regions(Jiangsu and Shanxi),the current situation of energy supply and demand during 2000—2005 is analyzed.The model is verified to reflect the actual regional energy supply and demand to a large extent.It offers a strategy for China's energy-economic system to maintain a high growth and healthy,stable development.