Coal quantity instruction optimization method for supercritical frequency modulation and peak regulation thermal power generating unit

Abstract

The invention relates to the technical field of thermal power generating unit coal quantity instruction optimization methods, and concretely relates to a coal quantity instruction optimization method for a supercritical frequency modulation and peak regulation thermal power generating unit. Adynamic coal quantity instruction is obtained according to the following method: when k is less than or equal to 1, a dynamic coal quantity instruction D2 is a pulse coal quantity instruction g plus a coal quantity instruction c; and when k is greater than 1, the dynamic coal quantity instruction D2 is the sum of the trapezoidal coal quantity instruction and the coal quantity instruction c. According to the dynamic coal quantity instructions obtained through the optimization method, when k is smaller than or equal to 1, the pre-coaling instruction is a pulse coal quantity instruction g, when k is larger than 1, the pre-coaling instruction is a trapezoidal coal quantity instruction, the step amount of the pre-coaling instruction is reduced, the coal quantity instruction of the frequency modulation and peak regulation thermal power generating unit reaches a target value in an optimal mode, and the unit can quickly enter a stable state.

Description

technical field [0001] The invention relates to the technical field of an optimization method for a coal quantity command of a thermal power unit, and relates to a method for optimizing a coal quantity command of a supercritical frequency modulation and peak regulation thermal power unit. Background technique [0002] my country's thermal power generation model will still occupy a dominant position in the energy structure for a long time to come. The thermal power unit not only undertakes the task of power generation, but also undertakes the important task of frequency regulation and peak regulation. The basis of thermal power unit frequency regulation and peak regulation lies in the adjustment of coal volume. Optimizing the coal quantity command is an inevitable choice for frequency regulation and peak regulation of China's power system. [0003] At present, the coal quantity command of frequency modulation and peak regulation thermal power unit consists of two parts, one p...

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Problems solved by technology

[0004] The present invention provides a method for optimizing the coal quantity command of a supercritical frequency modulation and peak regulation thermal power unit, which overcomes the above-mentioned deficiencies in the prior art, and can solve the problem that the pre-adding coal command step is large when adjusting the coal quantity command of the existing thermal power unit. The problem of large disturbances in various parameters of thermal power units caused by frequency modulation and peak regulation

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