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Thermal power generating unit deaerator water level control method, device and system and storage medium

A technology for water level control and thermal power units, which is applied in the general control system, control/regulation system, liquid level control, etc., can solve the problem of slow response speed of the water level of the deaerator, and achieve the effect of rapid control

Pending Publication Date: 2020-04-03
润电能源科学技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present invention provides a method, device, system and storage medium for controlling the water level of the deaerator of the thermal power unit, so as to solve the problem of the slow response speed of the water level of the deaerator in the process of condensate throttling and frequency regulation, and realize Rapid Control of Deaerator Water Level in Flow Frequency Modulation

Method used

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  • Thermal power generating unit deaerator water level control method, device and system and storage medium
  • Thermal power generating unit deaerator water level control method, device and system and storage medium
  • Thermal power generating unit deaerator water level control method, device and system and storage medium

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Embodiment 1

[0048] figure 1 The schematic flow chart of the method for controlling the water level of the deaerator of the thermal power unit provided in Embodiment 1 of the present invention, such as figure 1 As shown, the water level control method of the deaerator of the thermal power unit includes:

[0049]S100. Obtain the data of the water level disturbance test of the deaerator.

[0050] In the actual operation of thermal power units, the frequency of the grid will change due to the influence of the grid load. Considering that different grid loads will have an impact on the water level of the deaerator, the water level of the deaerator can be obtained by establishing the water level disturbance test of the deaerator Perturbation test data. Among them, different disturbances can be carried out through the load points of different loads of the thermal power unit to ensure the diversity of the obtained deaerator water level change data, and lay the foundation for the accurate determi...

Embodiment 2

[0062] image 3 The schematic flow chart of the method for controlling the water level of the deaerator of the thermal power unit provided in Embodiment 2 of the present invention, such as image 3 As shown, the water level control method of the deaerator of the thermal power unit includes:

[0063] S110, select three load points within the actual operating load range of the thermal power unit, the load points include the first load point, the second load point and the third load point, the load value of the first load point is greater than the load value of the second load point, The load value of the second load point is greater than the load value of the third load point.

[0064] During the actual operation of the thermal power unit, the frequency of the grid will change due to the influence of the grid load. Considering that different grid loads will have an impact on the water level of the deaerator, by selecting three load points within the actual operating load range ...

Embodiment 3

[0113] Figure 4 The structural schematic diagram of the water level control device for the deaerator of the thermal power unit provided in Embodiment 3 of the present invention, as Figure 4 As shown, the thermal power unit deaerator water level control device includes a deaerator water level first control unit 10, which is used to adopt any of the above-mentioned embodiments of the present invention according to the deaerator water level set value x1 and the deaerator water level measurement value x2 The method for controlling the water level of the deaerator of the thermal power unit is to control the water supply valve 20 of the deaerator, output the command y of the actuator, and change the water level of the deaerator.

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Abstract

The invention discloses a thermal power generating unit deaerator water level control method, device and system and a storage medium. The control method comprises the following steps: acquiring data of a deaerator water level disturbance test; establishing a deaerator water level transfer function model according to the data of the deaerator water level disturbance test; establishing a generalizedcontrol model according to the deaerator water level transfer function model; and optimizing the generalized control model, and determining control parameters of the generalized control model. According to the embodiment of the invention, the deaerator water level transfer function model and the generalized control model are established, and the control parameters of the generalized control modelare determined, so that the problem that the response speed of the deaerator water level in the condensed water throttling frequency modulation process is relatively low is solved, and quick controlon the deaerator water level in the condensed water throttling frequency modulation process is realized.

Description

technical field [0001] The invention relates to the field of thermal power generation control, in particular to a method, device, system and storage medium for controlling the water level of a deaerator of a thermal power unit. Background technique [0002] my country's resource endowment dominated by coal power determines that coal-fired thermal power still occupies a dominant position in all types of power generation in my country. The dominant position of thermal power in various power sources determines that it is also the dominant power source when responding to the primary frequency regulation power demand of the grid. [0003] Grid frequency stability is related to grid operation safety and power quality, and needs to be controlled within the specified range. The primary frequency modulation is the first barrier to suppress the frequency disturbance of the power grid. The primary frequency modulation of thermal power units is the main primary frequency modulation pow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D9/12G05B11/42G05B13/04
CPCG05D9/12G05B11/42G05B13/042G05B13/048
Inventor 张广涛梁正玉朱峰白小虎周锋杨晶莹宋亚豪
Owner 润电能源科学技术有限公司
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