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Thermoelectric generator unit coordination control method and coordination control system

A thermal power generation unit and coordinated control system technology, which is applied to the program control and electrical program control in the sequence/logic controller, can solve the problems of low stability and long adjustment transition time, and achieve high stability and adjustment transition The effect of short time, avoiding adjustment lag and repeated fluctuation of unit parameters

Active Publication Date: 2009-12-16
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of long adjustment transition time and low stability in the coordinated control method of thermal power generating units in the prior art

Method used

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  • Thermoelectric generator unit coordination control method and coordination control system
  • Thermoelectric generator unit coordination control method and coordination control system

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Experimental program
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Embodiment Construction

[0017] see figure 1 , figure 1 It is a flowchart of the coordinated control method for thermal power generating sets of the present invention. Coordinated control method of thermal power generating set of the present invention comprises the following steps:

[0018] S102 Obtain an adjustment instruction according to the pre-machine pressure, the pre-machine pressure set value, the power of the unit, and the power command of the unit;

[0019] S104 adjusts the steam turbine valve according to the adjustment instruction.

[0020] By adjusting the opening of the steam turbine control door, the change of the front pressure and unit power can be controlled, so that the generator system can quickly recover and stabilize.

[0021] The adjustment command can be calculated by the following formula:

[0022] XD=NS-NT×PS / PT (1)

[0023] Among them, XD is the adjustment command, NS is the unit power command, NT is the unit power, PS is the set value of the pre-machine pressure, and P...

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Abstract

The invention provides a thermoelectric generator unit coordination control method, comprising the following steps: calculating and processing according to turbine inlet steam pressure, turbine inlet steam pressure set value, unit power and unit power instructions to obtain an adjustment instruction; adjusting a steam turbine governing valve according to the adjustment instruction. The invention provides a thermal generator unit coordinated control method to change the turbine inlet steam pressure, the turbine inlet steam pressure set value, the unit power and the unit power instructions, thus the response is more quickly obtained by the adjustment instruction; the steam turbine governing valve is adjusted by the adjustment instruction, thus the unit parameters are adjusted quickly, and the turbine inlet pressure fluctuation and the unit power fluctuation caused by the mutual coupling of the turbine inlet pressure and the unit power is effectively inhibited.

Description

technical field [0001] The invention relates to a coordinated control method for a thermal power generating set, and also relates to a coordinated control system for a thermal generating set. Background technique [0002] With the improvement of power grid requirements, the AGC (Automatic Generation Control, automatic generation control) control capability of thermal power plant units has higher requirements than before. The operation effect of the AGC function depends entirely on the adjustment quality of the unit coordination control system. The operation of AGC requires that the unit coordination control system can quickly respond to the power command, and after the command changes, the main parameters of the unit, such as the pre-machine pressure and unit power, etc. Stabilize quickly to meet the requirements of frequent power changes of the units, so the adjustment quality of the coordinated control system has a great influence on the dispatching of the power grid. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/04
Inventor 伍宇忠叶向前朱亚清
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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