Intra-day rolling scheduling method for integrated heat and electricity system

An intra-day rolling scheduling method for an integrated heat and electricity system, comprising:

• establishing an objective function for scheduling of the integrated heat and electricity system, the objective function aiming to make operating costs of the integrated heat and electricity system to be a minimum, the integrated heat and electricity system comprising combined heat and power units, thermal power units, heat pumps, and circulating pumps;
• establishing constraints for a steady-state safe operation of the integrated heat and electricity system;
• and
• solving the objective function based on the constraints by an interior point method, to obtain an active power and a heating power of each combined heat and power unit, an active power of each thermal power unit, a heating power of each heat pump, and an active power consumed by each circulating pump, as an intra-day rolling scheduling scheme of the integrated heat and electricity system,
• wherein the objective function for scheduling of the integrated heat and electricity system is denoted by a formula of:
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• where, pb,t represents an active power of a bth combined heat and power unit in the integrated heat and electricity system at a tth scheduling period, qb,t represents a heating power of the bth combined heat and power unit at the tth scheduling period, N represents a number of combined heat and power units, F(pb,t,qb,t) represents a running cost of the bth combined heat and power unit at the tth scheduling period, px,t represents an active power of an xth thermal power unit in a power grid in the integrated heat and electricity system at the tth scheduling period, NTU represents a number of thermal power units, FTU(px,t) represents a running cost of the xth thermal power unit, and Δt represents an interval between two neighboring scheduling periods.