As clean energy technologies continue to advance

various electric energy substitution solutions have emerged in the construction sector.With the large-scale integration of electric energy substitution loads

assessing the load-carrying capacity of the distribution network for safe operation is crucial for distribution network planning.Firstly

three typical electric energy substitution technologies are selected in the construction sector:electric boilers

heat pumps

and air conditioners

and constructs a full-cycle economic assessment model considering the entire lifecycle of the equipment.Next

using an integrated energy system as the research object

the equipment and loads are modeled with the objective function of maximizing the number of electric energy substitution devices that the distribution network can accommodate.The model takes into account constraints related to the safe and stable operation of the distribution network

equipment output

as well as economic and policy factors.An electric energy substitution potential calculation model is then established and subsequently reformulated as a second-order cone programming model using second-order cone relaxation techniques.Finally

by simulating the IEEE 33-bus test case

a quantitative evaluation of the load-carrying capacity of the distribution network is achieved

demonstrating that

under policy support

electric energy substitution devices that consider economic factors have a broader development potential.