Control method of primary air volume of thermal power unit based on power grid frequency modulation and peak regulation

Abstract

The invention relates to a method for controlling the primary air volume of a thermal power unit based on power grid frequency modulation and peak regulation. The steps are as follows: in the logic configuration of the original coordinated control system, increase Thermal power unit primary air volume control loop interface based on power grid frequency and peak regulation; carry out logical configuration of thermal power unit primary air volume control loop based on grid frequency and peak regulation, and introduce its output to the thermal power unit primary air volume control circuit interface based on power grid frequency and peak regulation It is used as the feed-forward signal of the hot primary air main pipe pressure at the outlet of the primary fan and the primary air volume control of a single coal mill; the control system is put into actual operation, and according to the real-time operation curve, the primary air volume control loop of the thermal power unit based on frequency modulation and peak shaving of the power grid is adjusted online Relevant parameters, and finally achieve the expected effect of the control line. Through the existing DCS coordination control system, the present invention has good real-time performance, simple on-site debugging process, and is convenient for engineering realization.

Description

technical field [0001] The invention belongs to the technical field of automatic control of thermal power generating sets, and in particular relates to a method for controlling primary air volume of thermal power generating sets based on power grid frequency modulation and peak regulation. It can be used for the automatic control of the primary air volume when the thermal power unit participates in the frequency modulation and peak regulation of the power grid, so as to ensure that the unit responds quickly and stably to the frequency regulation and peak regulation, and at the same time automatically controls the main parameters within a reasonable range. Background technique [0002] Frequency modulation and peak regulation is an important means for power grid companies to maintain grid frequency stability. For the safety, stability and economical operation of the power grid and to improve the quality of power supply, the power grid company requires that the on-grid thermal...

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Problems solved by technology

Chinese patent "on-line measurement device for pulverized coal concentration in boiler primary air" patent application number CN201210027480.1, an online measurement device for pulverized coal concentration is designed to solve the problem of lack of online measurement devices for pulverized coal concentration in the existing boiler primary air, high cost, and Problems such as low measurement accuracy

[0004] The above documents and patents mainly focus on reducing the power consumption of primary fans and reducing NO X Emissions and primary air volume measurement accuracy are described, and the design method and application examples of the primary air volume control system that are conducive to energy saving and emission reduction are proposed. no targeted research

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