Determination of Interruptible Load as an Ancillary Service in a Coordinated Multi-Commodity Market

This paper studies the problem of the reliability-constrained generation and ancillary service dispatch including interruptible load in a spot market. An OPF-based technique for simultaneous scheduling of generation and ancillary services (AS) is proposed. Instead of using the deterministic system reserve criterion, a probabilistic reserve criterion based on the required reliability index is introduced and derived as reserve constraint. The reliability test system RBTS is used to illustrate the technique.