Load Profile Aware Demand Response Based on Event and Temporal Limitations

Abstract

This paper investigates the impact and limitations of of temporal characteristics and event/frequency limits of responsive load models on the integration of demand response (DR) resources into power system scheduling aspects. The temporal characteristics of responsive loads are incorporated into the DR scheduling problem through dynamic cost models considering the availability and utilization factors. The impact of physical operating constraints of DR loads are modelled as temporal and event/frequency limit constraints. The temporal characteristics of responsive loads of various sectors namely, residential, commercial, industrial and municipal sectors are examined. The proposed methodology is incorporated into the UC and DR scheduling problem. The proposed dynamic cost models reported lower operating cost compared to both the system operation with no DR scheduling as well as the system operation with static cost models. In addition, the enforcement of physical operation limits on DR loads through temporal and event limit constraints reduced the DR schedule. Consequently, this consideration would result in increased operational cost and reduction of overall system reserve. The variation in the techno-economic aspects of the system with respect to the DR penetration level are included for discussions of the static as well as the dynamic cost models.