Thermal power unit cooperative load change control method

A technology of thermal power unit and control method, which is applied to control systems, steam generation, lighting and heating equipment, etc., can solve problems such as throttling loss of steam turbine regulating valve, and achieve the effect of economical unit operation and reduced throttling.

Active Publication Date: 2011-03-30
EAST CHINA ELECTRIC POWER TEST & RES INST +1
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Problems solved by technology

In this traditional method of coordinated variable load, t

Method used

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Embodiment Construction

[0016] In order to better understand the technical content of the present invention, specific embodiments are described below in conjunction with the accompanying drawings.

[0017] The present invention provides a control method for coordinated variable load of a thermal power unit, which can greatly reduce the throttle loss of the steam turbine valve while still meeting the demand of power grid peak regulation, thereby improving the economy of unit operation.

[0018] Please refer to figure 1 , figure 1 Shown is a schematic diagram of the principle of load regulation by condensate in a preferred embodiment of the present invention.

[0019] The present invention provides a control method for coordinated variable load of a thermal power unit, including:

[0020] Obtain load deviation, hot well water level deviation and deaerator water level deviation;

[0021] Perform steady-state, load-increasing process or load-reduction process for the load deviation, hot well water level deviatio...

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Abstract

The invention provides a thermal power unit cooperative load change control method, including that: load deviation, thermal well water level deviation and deaerator water level deviation are acquired; steady state, loading or unloading process is carried out on the load deviation, thermal well water level deviation and deaerator water level deviation; according to different working conditions, the load deviation and the water level deviation are subject to weighting; the result is subject to half integral and high-low limit intelligent change; a condensate pump outlet door adjustment instruction is obtained; and control at the boiler side is reasonably combined, and performance requirement of thermal power unit load change is met. The thermal power unit cooperative load change control method provided by the invention is a new method utilizing unit energy storage, the control at the boiler side is reasonably combined, and the requirement of peak shaping can be met while greatly reducing steam engine door adjustment throttle loss, thus improving economy of unit operation.

Description

Technical field [0001] The invention relates to the variable load control of an ultra-supercritical generating set of a thermal power plant, and particularly relates to a control method for coordinated variable load of a thermal power plant. Background technique [0002] In order to quickly respond to the grid load, the energy storage of the unit must be used. In operation, the change of load is achieved through the valve adjustment of the turbine, that is, the change of intake air volume. Generally, when the load of a thermal power unit changes, the steam turbine gate actuates quickly in response to the load (that is, the energy storage of the boiler is used first), and the boiler combustion rate changes in time. Coordinated control refers to the coordination of the boiler combustion rate and the steam turbine gate to meet the load requirements of the unit. , To meet the stability of the main steam pressure of the unit, thereby ensuring the balance of the unit. With this tradi...

Claims

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Application Information

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IPC IPC(8): F22B35/00
Inventor 姚峻沈丛奇祝建飞
Owner EAST CHINA ELECTRIC POWER TEST & RES INST
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