A method for evaluating the actual peak-shaving capability of heating and heating units considering the operating safety margin

Abstract

The invention relates to a method for evaluating the actual peak-shaving capability of heating and heating units considering the operating safety margin. According to the design thermoelectric characteristics of the heating unit and the parameters of the rated heating design working conditions, the actual operation considering the appropriate operating safety margin is calculated and determined. The characteristic curve of the minimum equal exhaust steam flow of the low-pressure cylinder and the characteristic curve of the minimum and maximum main steam flow; the actual heating and extraction flow of the integrated unit is calculated through the determined characteristic curve to calculate the heat supply unit considering the appropriate operation safety margin. The peak shaving minimum output and the peak shaving maximum output under the state, and then the peak shaving output range of the existing heating unit under a specific heating load is clarified. The invention can be used to evaluate the peak-shaving output range of the heating unit under a specific heating load, and provide important reference data for the power grid to realize accurate and reliable scheduling of the heating unit during the heating period.

Description

technical field [0001] The invention belongs to the technical field of power generation, and in particular relates to an evaluation method for the actual peak-shaving capability of a heating and heating unit considering an operation safety margin. Background technique [0002] The rapid development of new energy units has put forward higher and higher requirements for deep peak regulation of thermal power units. In the thermal power unit, since the heating unit supplies heat and electricity to the outside world at the same time, its thermoelectric coupling characteristics greatly increase the difficulty for the unit to participate in the peak regulation of the power grid. At present, the peak shaving output of many heating units can only be reduced to about 70% during the heating season. [0003] In order to improve the peak shaving range of existing thermal power units, the National Energy Administration has launched a flexibility transformation demonstration project, and ...

AI Technical Summary

Problems solved by technology

However, there is currently a lack of a practical evaluation technique that considers the operating safety margin to evaluate the peak-shaving capacity of existing heating units.

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