Interruptible load management within secondary reserve ancillary service market

This paper focuses on the development of a model for interruptible load (IL) procurements within the secondary reserve ancillary service market. The model is based on an optimal power flow (OPF) framework which could determine the real-time selection of the interruptible load bidders by one entity who runs the market (e.g., the independent system operator (ISO)). The structure of the market is also proposed for implementation. The characteristics of the procurements of interruptible load such as advance notification, locational aspect of the load, power factors of the load, are explicitly considered. It is shown that interruptible load management would considerably help the ISO to maintain the system operating reserve during the peak load periods. The CIGRE-32 bus system, modified to represent different customer characteristics, is used for the study.