Evaluation of Maximum Integration Capacity of Electric Energy Substitution in Distribution Network

With the promotion of electrical energy substitution in various fields such as industry, construction, and transportation, the integration of a large number of electrical energy substitution equipment has not only greatly increased the power supply pressure of the power grid but also caused quality problems such as voltage deviation and harmonic pollution in the distribution network. It has become an urgent issue to evaluate the maximum integration capacity of the distribution network for multiple types of electrical energy substitution equipment. Therefore, this paper first analyzes the harmonic characteristics of typical electrical energy substitution equipment and evaluates the impact of integration of electrical energy substitution equipment on the harmonic content of the power grid through harmonic flow analysis. Based on this, some electrical energy quality evaluation indicators are selected, and indicators analysis is carried out for the combination of distributed photovoltaic power and various types of electrical energy substitution to evaluate the electrical energy substitution maximum integration capacity of a distribution network case, providing reference for the promotion and layout of electrical energy substitution.