Dynamics of heating and cooling loads: models, simulation, and actual utility data

Study of the recovery transient during cold load pick-up of heating and cooling loads is of concern in designing distribution systems and direct load control strategies. Examination of actual utility data reveals that this transient consists of two epochs. A description is given of five mathematical models which have been proposed in the literature for studying this transient, and a brief summary is given of results of computer experiments which show that the five models are mutually consistent, allowing the possibility of mixing or trading models where appropriate. Recommendations for monitoring new variable in load control programs are made