Model Reasearch And Evaluation Analysis On Region-based Multi-energy System

With increase in population and growth in living standard, the demand in heat and electricity keeps increasing. Besides, the average resource in China is limited. Thus renewable energies play an increasingly important role in our future life. In this dissertation, a new energy- supply mode which combines traditional energies and renewable ones will be illustrated. The strategy of energy storage is introduced and will be verified.Firstly, we figure out the characteristic and structure of energies used in business district, analyze the related energy system and conduct research on distributed energy supply system, solar system and geothermal energy system by analyzing their coupling property so as to form a multi-energy system.Secondly, establish multi-energy model. Corporation has multiple targets in productive processes, such as satisfaction in energy demand, cost-saving and reduction in pollutant emission. Taking all the goals into consideration, a multi-objective multi-energy model can be established by means of multi-objective plan and better improved with the help of LINGO. Meanwhile, the instability of renewable energy is taken into consideration.Thirdly, this paper considered the huge volatility of power production equipment caused by the short-term load response which will lower the efficiency of the system. We establish a continuous time model based on load response, use ORIGIN to form energy-consumed curve, as to confirm the optimal energy storage volume. A real case is also analyzed to validate energy-storage strategy.Finally, analyze and evaluate the multi-energies system in terms of energy-saving capacity, environment-impact and economic efficiency, renewable energy permeability considering daily typical energy consumption. In addition, those changes in outside conditions are considered to study the impact of different factors in a more detailed and comprehensive way.