Comprehensive Comparative Analysis of Different Regional Energy Supply Schemes

摘要

A comprehensive comparative analysis of different energy supply schemes is carried out to solve the coordinated supply problem in regional multi-energy complementary systems.Firstly,two distributed energy supply schemes,respectively gas turbine CCHP system and environment-source heat pump system,are proposed,and corresponding operation strategies are formulated; next,the safety and environmental performances of the municipal centralized energy supply scheme and the above two distributed energy supply schemes are analyzed; then,a probabilistic life-cycle cost model is established,and the calculation methods for the economic efficiencies of the three energy supply schemes are presented; finally,in the case of one certain commercial region in northern China,the comprehensive evaluation on the three energy supply schemes considering economy,safety and environmental performance is carried out.Based on sensitivity analysis,the impacts of natural gas price and electricity price on the economic efficiency of different energy supply schemes are obtained,which indicate that as the natural gas price and electricity price change,the scheme with the optimal economic efficiency will change correspondingly.As a result,a rational energy supply scheme in practical projects should be formulated considering the focus of the planning area and the local energy prices.