Weekly unit combination optimization method for comprehensive energy system containing combined heat and power unit

Abstract

The invention provides a comprehensive energy system weekly-ahead unit combination optimization method containing a thermoelectric combination unit. The method comprises steps of 1, building a comprehensive energy system weekly-ahead unit combination optimization target function containing the thermoelectric combination unit according to a scheduling target of system operation cost minimization; 2, constraint conditions of the target function being determined; and step 3, according to the objective function established in the step 1 and the constraint condition determined in the step 2, establishing a comprehensive energy system weekly-front unit combination optimization model containing the combined heat and power unit and designing different scenes for solving to obtain a weekly-front unit combination scheme. Based on the actual operation data of the comprehensive energy system containing the combined heat and power unit, the optimized weekly unit combination result of the comprehensive energy system containing the combined heat and power unit is obtained, and the start-stop plan of the combined heat and power unit and the straight-condensing thermal power unit in the comprehensive energy system is optimally formulated; and meanwhile, the operation constraints of a power system and a thermodynamic system are met.

Description

technical field [0001] The invention relates to the field of electric power engineering, in particular to a method for optimizing the combination of pre-week units (unit combinations formulated one week in advance) of a comprehensive energy system including combined heat and power units. Background technique [0002] The contradiction between the current heating demand and wind power consumption is very prominent. The reason for the contradiction is that the heating period in winter happens to be the period when wind power output is relatively large. (Determining power by heat is an operation mode of the cogeneration system that determines the amount of power generated by the size of the heating load. The "heat" in "determining power by heat" refers to various heat loads. The heat load It is called "determining power by heat". That is to say, it is necessary to select the supporting boiler and turbogenerator set according to the heating load, and to determine the steam intak...

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Problems solved by technology

) operation mode, the power output of thermal power plants will occupy the consumption space of wind power generation, resulting in the phenomenon of abandoning wind and electricity, which is not conducive to the consumption of renewable energy

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