Method and device for determining minimum peak regulation load of boiler

Abstract

The invention provides a method and device for determining minimum peak regulation load of a boiler. The method comprises the steps: adjusting peak regulation loads, and determining boiler safe operation detection results corresponding to different peak regulation loads, wherein the boiler safe operation detection results at least comprise one or more of stable combustion state parameters, hydrodynamic safety parameters, denitration adaptive parameters and auxiliary machinery adaptive parameters; and acquiring the minimum peak regulation load which enables each parameter in the boiler safe operation detection results to be in a safe range, and setting the minimum peak regulation load as the minimum operation peak regulation load of the boiler so as to ensure the safe operation of the boiler under the energy-saving condition. Under the condition that any one or more of the stable combustion state parameters, the hydrodynamic safety parameters, the denitration adaptability parameters andthe auxiliary machinery adaptability parameters are not in the safety range, the corresponding peak regulation loads are eliminated, and the minimum peak regulation load is selected from all remaining peak regulation loads to be the minimum peak regulation load of the boiler.

Description

technical field [0001] The application belongs to the technical field of thermal power generation, and in particular, relates to a method and device for determining the minimum peak-shaving load of a boiler. Background technique [0002] Due to the increase in power consumption load and other renewable energy power generation equipment, in some cases, thermal power units need to be in a low-load working state. However, as the load decreases, the working state of the main and auxiliary engines of the thermal power unit gradually deviates from the optimal operating state at design time. For example, as the peak load decreases, the furnace temperature and combustion stability of the pulverized coal combustion furnace decrease, and the ability to adapt to changes in working conditions becomes weaker, and small load disturbances may cause fire extinguishing accidents; similarly, thermal power units Because various auxiliary machines are in the low-power working state, their adju...

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Problems solved by technology

[0004] This application provides a method and device for determining the minimum peak-shaving load of a boiler to at least solve the problem in the prior art that only the parameters of the steam turbine and the thermal system are considered in the process of determining the minimum peak-shaving load of the boiler, but the boiler is not fully considered. The operation of the system cannot determine the deep peak-shaving capability of the unit as a whole

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