Chapter 9 - Day-ahead stochastic optimal operation of the integrated electricity and heating system considering reserve of flexible devices

Abstract

This chapter proposes the day-ahead stochastic optimal operation modeling of the integrated electricity and heat system (IEHS). First, the reserve modeling based on the linear combination of a convex hull is proposed for the condensing-type combined heat and power unit. Second, the day-ahead optimal operation model of the IEHS is formulated based on two-stage stochastic programming, which considers the unit commitment and heat pipelines constraints simultaneously. Third, to accommodate more renewables, multiple flexible devices, including heat pumps, electric boilers, and heat storage tanks, are coordinated with combined heat and power units to facilitate the power balance and heat balance in both stages. The synergy of those devices and the linkage for each device in two stages are established. The case studies conducted on a 6-bus IEHS show that utilizing improved flexibility can effectively reduce the operational cost and wind power curtailment.