Existing integrated energy system（IES）planning research lacks consideration of investment quota constraints. A single target planning strategy with the lowest total operating cost

lowest carbon emissions

or highest energy efficiency cannot meet the best equipment planning needs under the investment quota.Based on this

a planning model of IES based on investment quota to solve the problem of optimal capacity allocation of equipment under fixed investment is established. Firstly

a typical scenario of IES including cooling

heating and power load is established.Secondly

the annualized equivalent comprehensive cost

carbon emissions

and comprehensive energy efficiency are the objectives

and various constraints are considered such as energy balance

equipment output

fixed investment

energy interaction

and scene environment to establish a planning model. Finally

the Pareto frontier solution set is obtained by NWSFA

and the global optimal configuration scheme is solved through VIKOP

which can meet the load demand and achieve the optimal operation effect under a fixed investment

to achieve triple benefits about economic

environmental and social. In the end

a numerical example is analyzed to verify the effectiveness of the models and methods described in the article.