Techno-Economic Analysis of Electric Heating Load Participation in Power System Power Regulation

Abstract

People are beginning to develop and use new energy sources, but it leads to a lack of power system regulation, so it is crucial to analyse the change of load power. In this paper, the electric heating load is taken as an example, and firstly, the properties of the steady state solution of the differential equation are analysed by changing the parameters of the indoor and outdoor equivalent heat capacity and equivalent thermal resistance, and it is found that the indoor equivalent heat capacity and thermal resistance have a significant effect on the results. Then, after differentiating the differential equations, the indoor temperature changes and the electric heating equipment switching state curves for one day were plotted, and it was found that the daily electricity cost increased as the temperature difference between indoor and outdoor increased. Then, the remaining switchable time values are analysed based on the load's current switch-on state and temperature-limited intervals, and the power upward and downward adjustments of the sustainable time are plotted schematically. In order to enhance the model universality so that it is no longer limited by the current switch on/off state, the switching value of each state is set to change dynamically to obtain a new power regulation diagram, and finally in this paper, we extend the model to multi-family, plot their one-day indoor temperature changes and equipment switching state diagrams and analyse the economic benefits.