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Whole-course load control method for supercritical direct current furnace

A supercritical once-through furnace and load control technology, applied in control systems, engine components, steam generation, etc., can solve the problems of backward operation mode, loss of economic benefits, loss of peak-shaving power of generator sets, etc., to reduce fluctuations, prevent Wasteful, responsive effects

Active Publication Date: 2016-12-14
HUADIAN ELECTRIC POWER SCI INST CO LTD
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Problems solved by technology

The load automatic control range of most supercritical units in China is mostly 60%-100% Pe, and the load range below 60% Pe can only be controlled manually or indirectly. Control, the power plant produces a lot of ineffective electricity, causing the generator set not only to lose most of the peak-shaving electricity, but also to lose a considerable part of the economic benefits

Method used

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  • Whole-course load control method for supercritical direct current furnace
  • Whole-course load control method for supercritical direct current furnace
  • Whole-course load control method for supercritical direct current furnace

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Embodiment Construction

[0050] Below in conjunction with accompanying drawing, the present method invention is described in further detail, below is the explanation to the present method invention and the present method invention is not limited to following brief introduction, wherein disclosed data, function, code name etc. are not the limitation of this method invention, the technical field Personnel can obtain other data and functions to realize the purpose of the invention according to the solutions provided by the instructions and drawings without creative labor.

[0051] Such as figure 1 As shown, the input signal is selected by the switching function module. The input of the first switching function module is AGC and CCS commands. The output of the second switching function module is the output of the first switching function module, otherwise it is the actual load MW; the load processing center will limit the speed of the CCS and AGC commands and then add the frequency difference function f ...

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Abstract

The invention relates to a whole-course load control method for a supercritical direct current furnace. The method mainly includes the steps that a load processing center generates load instructions; a boiler main control instruction BD and a steam turbine main control instruction mu are generated according to boiler main control instructions BD1, BD2 and BD3 and steam turbine main control instructions mu1, mu2 and mu3 generated by the load at the three phases of 0%-30% Pe, 30%-60% Pe and 60%-100% Pe through instruction optimization selection; and then the BD is fed into a fuel main control device, the mu is fed into a DEH for regulation control, and whole-course load control of the supercritical direct current furnace is achieved.

Description

technical field [0001] The invention of the method relates to the field of load control of a supercritical direct current furnace, in particular to a method for controlling the whole load of a supercritical direct current furnace. Background technique [0002] With the increasing proportion of large-capacity supercritical thermal power units in the power grid, the operation mode of supercritical units has gradually changed. Moreover, due to changes in the load structure of the grid side, the peak-to-valley difference of the grid is gradually increasing, and the grid's requirements for the automatic generation control (AGC) load response capability of large supercritical units are becoming more and more clear. more stringent. The load automatic control range of most supercritical units in China is mostly 60%-100% Pe, and the load range below 60% Pe can only be controlled manually or indirectly. Control, the power plant produces a lot of ineffective electricity, causing the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F22B35/00F01D17/10
CPCF01D17/10F22B35/00
Inventor 黄道火贾宁波刘洋许伟强王蓝珏张毅杰刘思捷雷璐源张方王凯阳潘宇乐
Owner HUADIAN ELECTRIC POWER SCI INST CO LTD
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