Method and device for determining drum water level in subcritical boiler of coal-fired unit
A technology for determining the water level of a steam drum, which is applied to steam boiler components, steam boilers, steam boiler accessories, etc., can solve problems such as limiting the deep peak-shaving capability of the unit, achieve enhanced economic and social benefits, and improve variable load Capacity and adaptability, the effect of improving regulatory performance
Active Publication Date: 2022-04-22
NORTH CHINA ELECTRICAL POWER RES INST +2
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At the same time, when any operating parameter exceeds the normal operating range, it can limit the unit's deep peak-shaving capability
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[0069] 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 of the embodiments of the present invention, not all of them. 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.
[0070] Due to the complex types of power plant boilers, especially the boilers of coal-fired units, complicated operating conditions, and many interference factors, the water level of the drum itself is affected by many interference factors, not only the combustion characteristics of the boiler itself, but also the combustion of the boiler. Affected by many factors, such as changes in coal quality, changes in air volume, changes in pulverizing sys...
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The invention provides a method and device for determining the steam drum water level in a subcritical boiler of a coal-fired unit. The test value of the steam drum water level is optimized through the linear regression algorithm in machine learning, and the optimized steam drum water level data can reflect more accurately The real situation of the boiler water level solves the problem of steam drum water level control under the deep peak-shaving condition of the unit, and provides a favorable guarantee for the safe production of the unit. On the basis of ensuring the safe operation of the unit, it provides more process control for the process control. A good solution can improve the variable load capacity and adaptability of the unit, improve the adjustment performance of various indicators of the unit, and at the same time meet the requirements of the power grid for AGC and primary frequency regulation management and assessment in the case of deep peak regulation. Thereby improving the safety and economy of the operation of the unit, ensuring the environmental protection index of the unit, and enhancing the economic and social benefits of the thermal power generation unit participating in the grid assessment.
Description
technical field [0001] The invention relates to the field of boiler water level measurement, and more specifically, to a method and device for determining the water level of a steam drum in a subcritical boiler of a coal-fired unit. Background technique [0002] With the change of the global energy pattern, especially the change of China's new energy policy, a large number of new energy power stations have sprung up to connect to the power grid. Thereby reducing energy consumption, but due to its influence by environmental factors and other issues, a certain thermal power unit is required for necessary cooperation and support. [0003] In this context, the Bureau of Energy put forward a plan for the flexibility transformation of thermal power units. Therefore, higher requirements are put forward for ordinary coal-fired thermal power units. That is, when the grid load is at a low point, and the new energy units are guaranteed to generate electricity normally, the coal-fired...
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IPC IPC(8): F22B37/78F22B35/18G06N20/00
CPCF22B37/78F22B35/18G06N20/00
Inventor 刘磊康静秋杨振勇郑重张红侠程亮解冠宇李永富
Owner NORTH CHINA ELECTRICAL POWER RES INST