A method and device for determining the minimum peak load of a boiler
A determination method and load technology, applied in the determination method and device field of the minimum peak load of the boiler, can solve the problems such as the inability to determine the deep peak shaving capacity of the unit as a whole, and the failure to fully consider the operation of the boiler system
Active Publication Date: 2022-02-25
NORTH CHINA ELECTRICAL POWER RES INST +2
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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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[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0038] Before analyzing the method embodiments provided in this specification, first introduce the boiler unit mentioned in the embodiments.
[0039] The boiler unit is a unit that uses fuel such as coal, oil or combustible gas to heat the water in the steam boiler to increase the temperature and pressurize it, and then use the aforementioned pressurized steam to drive the gas turbine to generate electricity. Boiler unit (system) includes combustion system, wa...
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The invention provides a method and device for determining the minimum peak-shaving load of a boiler, including: adjusting the peak-shaving load, and determining the boiler safe operation detection results corresponding to different peak-shaving loads; the boiler safe operation detection results at least include stable combustion One or more of state parameters, hydrodynamic safety parameters, denitrification adaptability parameters and auxiliary machine adaptability parameters; obtain the minimum peak-shaving load that makes all parameters in the boiler safe operation detection results within the safe range, and The minimum peak shaving load is set as the minimum operating peak shaving load of the boiler to ensure the safe operation of the boiler in the case of energy saving. As long as any one or more of the steady combustion state parameters, hydrodynamic safety parameters, denitrification adaptability parameters and auxiliary machine adaptability parameters are not within the safe range, the corresponding peak load is excluded, and all remaining peak load Select the smallest peak load in the load is the minimum peak 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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IPC IPC(8): G06Q50/06
CPCF22B35/18
Inventor 李战国李永富解冠宇程亮孙亦鹏王俊俊
Owner NORTH CHINA ELECTRICAL POWER RES INST