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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: 2013-12-04
EAST CHINA ELECTRIC POWER TEST & RES INST +1
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  • Abstract
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AI Technical Summary

Problems solved by technology

In this traditional method of coordinated variable load, the steam turbine valve must have a certain throttling loss

Method used

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  • Thermal power unit cooperative load change control method

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Embodiment Construction

[0016] In order to better understand the technical content of the present invention, specific embodiments are given together with the attached drawings for description as follows.

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

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

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

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

[0021] According to the steady state, loading process or load reducing process, the deviation of th...

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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 in a thermal power plant, and in particular to a control method for a coordinated variable load of a thermal generating set. Background technique [0002] In order to respond quickly to the grid load, the energy storage of the unit must be utilized. During operation, the change of load is achieved by adjusting the valve of the turbine, that is, changing the intake air volume. Usually, when the load of the thermal power unit changes, the steam turbine valve responds to the load quickly (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 between the boiler combustion rate and the steam turbine valve, while meeting 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. In this t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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