Thermal power plant generator set varying duty energy consumption analysis method based on approach method

Abstract

The invention discloses a thermal power plant generator set varying duty energy consumption analysis method based on an approach method. According to the method, 18 operating parameters with large influence on economical efficiency of generator sets are selected as analyzing objects according to long-tern operation experience, an operation statistic optimum value is used as an operation reference value, a series of working conditions is hypothesized between a stable operation condition and an actual operation condition, the 18 operating parameters are made to approach an actual operation value from the operation reference value one by one, energy consumption analysis of varying duty is carried out according to coal consumption difference values in the approaching process, parameters having large influences on coal consumption levels in the varying duty process are obtained through ranking, guide bases are provided for the determination of duty varying speed, duty varying scope and the time of a stabilization section in varying duty operation of a million-level set, the purpose of reducing coal consumption for electricity generation in the duty varying operation of a power plant is achieved, the task of duty varying is completed, and coal resources are saved at the same time.

Description

technical field [0001] The invention relates to a method for analyzing the differential consumption of a large-scale unit, in particular to a method for analyzing the differential consumption of a generating set in a thermal power plant based on an approximation method. Background technique [0002] Affected by electricity demand, the load of large-scale thermal power plants must fluctuate with the peak and valley of electricity consumption of the day, season, and year. There is a large inertia and delay in the control and adjustment of various parameters. Too fast load change speed, too large load change range and too short load stabilization time will cause the actual operating condition to deviate from the stable condition. The control of power supply will eventually affect the coal consumption of power supply, resulting in the coal consumption of power supply during the variable load operation of the unit is much greater than the corresponding coal consumption of stable ...

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Problems solved by technology

However, this model has relatively large errors due to the coupling between parameters. The item-by-item approximation method is based on the analysis of energy loss and applies the concept of comparison benchmark to determine the energy loss distribution. The error is larger than that of the single simple superposition method. much smaller

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