Control system and method for improving the rapid boiler adjusting capability of unit generating set

A technology of control system and generator set, applied in the direction of electric fluid pressure control, etc., which can solve problems affecting the safe and stable operation of power plant boilers, vibration divergence, and long time for operating pressure to stabilize

Active Publication Date: 2015-09-23
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +1
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Problems solved by technology

[0006] When the boiler of the unit generator set adjusts the load quickly, due to the influence of various reasons, the actual operating pressure is stable for a long time, and even the phenomenon of oscillation and divergence occurs, which seriously affects the safe and stable operation of the power plant boiler

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  • Control system and method for improving the rapid boiler adjusting capability of unit generating set
  • Control system and method for improving the rapid boiler adjusting capability of unit generating set
  • Control system and method for improving the rapid boiler adjusting capability of unit generating set

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Embodiment Construction

[0043] The present invention is described in detail below in conjunction with accompanying drawing:

[0044] In order to meet the requirements of rapid adjustment of unit load for unitary thermal power generation units, the automatic control system is generally designed as a coordinated control method based on boiler follow-up. According to the safe and stable operation requirements of the unit, the steam pressure adjustment of the unit operation is mainly completed by the boiler adjustment output.

[0045] At present, due to the influence of factors such as fuel quality and unit operation mode in thermal power production enterprises, when the unit quickly adjusts the power generation load, the steam parameters of the unit change greatly, especially the main steam pressure, main steam temperature and other important parameters that affect the safe operation of the unit. big. At this time, if the boiler cannot adjust the output in time and quickly to stabilize the operating pa...

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Abstract

The invention discloses a control system and method for improving the rapid boiler adjusting capability of a unit generating set. The system comprises a deviation sampling module, an automatic boiler pressure PID regulator, an integrated calculation module, a feedforward generation module and a feedforward output amplitude limit module, one input signal of the automatic boiler pressure PID regulator is a signal directly from the deviation sampling module, the other input signal of the automatic boiler pressure PID regulator is a signal which is processed by the integrated calculation module, the feedforward generation module and the feedforward output amplitude limit module, and the output end of the automatic boiler pressure PID regulator is connected with a boiler control system. The control system of the invention can solve the problem that the working condition is instable for a long time due to wide fluctuation of the main vapor pressure of the set when the set adjusts the load rapidly, prevents the operational pressure of the set from oscillation and divergency, and ensures that the power generating set runs safely and stably.

Description

technical field [0001] The invention relates to a control system and method for improving the rapid adjustment ability of a boiler of a unit generating set. Background technique [0002] Thermal power generation units occupy an important position in my country's electric power production. With the development of large-scale power generation units and the construction of UHV and smart grids in my country, the requirements for rapid adjustment of power generation load of thermal power generation units are getting higher and higher, and the rapid adjustment of unit units Load, the unit unit boiler must be required to have the ability to quickly adjust the output, thereby stabilizing the operating steam parameters of the unit, and laying the foundation for the safe and stable operation of the unit. [0003] In order to meet the requirements of rapid adjustment of unit load for unitary thermal power generation units, the automatic control system is generally designed as a coordina...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D16/20
Inventor 韩英昆庞向坤孟祥荣高嵩林波李克雷于庆彬
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY
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