Technical and Economic Analysis of Electric Heating Load Participating in Power Regulation of Power System

In this paper, the thermal models of outdoor, wall and indoor systems of typical households are established, and the ordinary differential equations of lumped parameters are solved by iterative method. The state parameters and economic effects of electric heating under steady-state operation at different outdoor temperatures are studied. The ordinary differential equation of lumped parameters in the equivalent model of indoor temperature change process is solved by iterative method, and the operation cycle and related parameters of typical households at different temperatures are obtained, and the corresponding economic costs are calculated. The results show that the equivalent thermal resistance of the outer wall and the outdoor air has the greatest influence on the indoor temperature, while the equivalent heat capacity of the wall has the least influence. The ability of typical household electric heating load to participate in power regulation is analyzed, and the duration of power up-regulation and down-regulation is obtained. The interleaving strategy is used to control the electric heating grouping to use different grouping numbers at different temperatures, so as to realize the stable total power curve during the peak load shifting period and ensure the most reasonable and effective electric heating utilization rate.