Evaluating National Multi-energy System Based on General Modeling Method

This paper uses an integrated evaluation framework to evaluate the possible national multi-energy flow in China in a near future. The framework includes an integrated modeling for national multi-energy system in China. These key and bone national energy facilities are all modeled in a generalized network flow formulation. The modeling considers the regional energy system, inter-regional power and natural gas transmission system and the district supply heat model. Specific modeling method is abstracted as some general modeling rules to tackle the difficulty of modeling so many different energy facilities through focus on the input energy flow and output energy flow of them. In addition, it also contains a short-term or mid-term (1~3 years) operation evaluation model based on the least socio-economic cost or national energy resource adequacy. The model is proposed to find the potential of Chinese bone national energy system in an integrated multi-energy perspective and to evaluate the impact of a short-term or mid-term national energy policy in technical way considering the coupling of different energy sub-systems. Although it is difficult to verify the national energy model, the open and known energy data of China in 2016 is used to verify the model. Then this model is employed to evaluate the China multi-energy system in 2020 to give some suggestions on the optimization of energy flow at the national scale and supply heat transition.