Safety monitoring system and method for thermal power plant in mixed coal combustion mode

Abstract

The invention relates to a safety monitoring system and method for a thermal power plant in a mixed coal combustion mode, and the system comprises a data collection subsystem which is used for collecting the operation data of a boiler in real time; a data processing subsystem used for cleaning the boiler operation data collected in real time to obtain boiler equipment operation effective data; a safety analysis subsystem used for carrying out equipment parameter comprehensive evaluation, boiler load capacity evaluation, slagging feedback analysis and operation condition evaluation; a data storage subsystem used for storing boiler equipment operation data and analysis data output by the safety analysis subsystem; and an alarm triggering subsystem used for judging and outputting a corresponding control signal to an alarm device according to the analysis data output by the safety analysis subsystem in combination with a set abnormal alarm logic condition. Compared with the prior art, the whole process of mixed coal combustion can be accurately monitored in real time, safety analysis can be carried out, operation parameters can be fed back and optimized, and the safe and stable operation of the boiler is ensured.

Description

technical field [0001] The invention relates to the technical field of combustion safety control for thermal power generation, in particular to a safety monitoring system and method for a thermal power plant in a coal-mixed combustion mode. Background technique [0002] At present, coal blending technology is widely used in thermal power plants and has become a main thermal power generation method. However, most power plants have the problem that the type of coal burned deviates from the designed type of coal, which makes the combustion effect worse and the operation stability decreases. , low load peak regulation is difficult, the thermal efficiency of the boiler is reduced, slagging and overheating of the superheater occur, and the boiler is prone to combustion safety problems. Today’s thermal power plant equipment safety inspections mostly use traditional manual inspections combined with technicians’ DCS system data monitoring methods. Faced with complex on-site environme...

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Problems solved by technology

[0002] At present, coal blending technology is widely used in thermal power plants and has become a main thermal power generation method. However, most power plants have the problem that the type of coal burned deviates from the designed type of coal, which makes the combustion effect worse and the operation stability decreases. , low load peak shaving is difficult, the thermal efficiency of the boiler is reduced, slagging occurs and the superheater is overheated, which makes the boiler prone to combustion safety problems

Today’s thermal power plant equipment safety inspections mostly use traditional manual inspections combined with technicians’ DCS system data monitoring methods. Faced with complex on-site environments and massive data, relying entirely on the experience of the staff cannot solve equipment safety in a timely and accurate manner. assessment questions

In addition, due to the non-linear relationship of mixed coal and coal quality, it is difficult for coal quality measurement technology to meet the accuracy requirements, and the change of coal quality cannot be optimized in time, and it is even more difficult to achieve real-time stability analysis.

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