Interruptible load management using optimal power flow analysis

An interruptible load management (ILM) scheme is proposed using dynamic Optimal Power Flow analysis. It enables real-time selection of interruptible loads incorporating network constraints and dynamic restriction on generation viz. ramp-rate limits. The model provides an analytical framework for addressing several important issues associated with optimal selection of load curtailment e.g. advance notification for load curtailment, short-term price discounts and long-term discounts on demand-charges, power factor of the load and customer-cost associated with the load to be curtailed, and system security. A six-bus example illustrates the proposed methodology. Keywords: Interruptible Load management, Optimal Power Flow, Discount on Spot-Price, Discount on Demand-Charge