Energy storage modeling of inverter air conditioning for output optimizing of wind generation in the electricity market

Abstract

In order to achieve the compatibility of the air conditioning (AC) loads with the current dispatch models, this paper utilizes demand response (DR) technology as energy storage resources to optimize the aggregator's behaviors in the real-time market for less economic loss caused by the fluctuations of wind power. The inverter AC, as a typical demand response resource, is constructed as a power type battery model (PTBM) and a capacity type battery model (CTBM) according to the different control methods, which are expressed through a circuit model and mathematical model to describe the energy storage characteristics of ACs. Moreover, the comparisons between the PTBM and CTBM are given analytically by their response speed, power &energy capacity and the cost of control, which will be helpful to guide the associated operators to choose the appropriate models to take part in demand response. Considering that the wind generation fluctuates frequently and greatly, the PTBM is chosen to take part of the demand response for output optimizing of the wind generation. The simulation results demonstrate that PTBMs can work in the way of conventional batteries (CBs) to optimize wind generation in the real-time market.