Carrying Capacity Evaluation Model of Distribution Network Containing Regenerative Electric Heating Access

Aiming at the problem of evaluating the access scale of regenerative electric heating under the existing distribution network structure, a method for evaluating the carrying capacity of distribution network with regenerative electric heating was proposed. Firstly, the main influencing factors of heat load and operation characteristics of regenerative electric heating were analyzed, and the regenerative electric heating system model was established. At the same time, the distribution network available valley power model was established. Then, with the maximum heating area as the goal, combined with the available low-valley electricity constraint and chance constraint of the distribution network, the evaluation model of the distribution network carrying capacity of the regenerative electric heating was constructed. Finally, the evaluation model was applied to a rural distribution network in Hebei Province, and the impacts of different evaluation models, confidence of chance constraints and access points on the carrying capacity of distribution network were compared. The results show that the proposed evaluation model can effectively increase the heating area that the distribution network can carry, improve the utilization rate of distribution network resources, and realize the reasonable evaluation of the access scale of regenerative electric heating in the current distribution network structure.