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Automatic control method for wet-type electric dust remover of thermal power generating unit

A wet electrostatic precipitator, thermal power unit technology, applied in the direction of external electrostatic separator, power supply technology, electrostatic separation, etc., can solve the problems of poor flexibility and low efficiency, achieve good energy saving effect, improve energy saving ability, and good anti-interference ability Effect

Active Publication Date: 2021-05-04
SOUTHEAST UNIV
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Problems solved by technology

Although the idea of ​​energy-saving optimization and control of the concentration at the outlet of the electrostatic precipitator has been proposed long ago, the open-loop control method is generally adopted for the electric precipitator in thermal power plants at present, and the operating personnel can control the parameters such as the secondary voltage / current of the electric field in real time through experience. This method is more efficient. low, poor flexibility

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  • Automatic control method for wet-type electric dust remover of thermal power generating unit
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  • Automatic control method for wet-type electric dust remover of thermal power generating unit

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Embodiment Construction

[0055] The following description is merely exemplary in nature and not intended to limit the disclosure, application or use. It should be understood that throughout the drawings, corresponding reference numerals indicate like or corresponding parts and features.

[0056] Such as figure 1 As shown, a kind of thermal power unit wet electrostatic precipitator automatic control method in the embodiment of the present invention comprises the following steps:

[0057] S1. Obtain the dynamic characteristic model through the disturbance test of the wet electrostatic precipitator;

[0058] S2, respectively read the operating parameters of the unit, the operating parameters of the wet electrostatic precipitator and the operating parameters of the pre-stage dry electrostatic precipitator;

[0059] S3. According to the operating parameters of the dry electrostatic precipitator and the operating parameters of the wet electrostatic precipitator, calculate a feedforward adjustment instruct...

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Abstract

The invention discloses an automatic control method for a wet-type electric dust remover of a thermal power generating unit, and the method comprises the following steps: obtaining a dynamic characteristic model through a disturbance test of a wet-type electric dust remover; respectively reading the operation parameters of the unit, the operation parameters of the wet-type electric dust remover and the operation parameters of the pre-stage dry electric dust remover; according to the operation parameters of the dry-type electric dust remover and the operation parameters of the wet-type electric dust remover, calculating a feedforward adjusting instruction for adjusting a secondary current and / or secondary voltage; according to the operation parameters of the unit and the operation parameters of the wet-type electric dust remover, sending out a feedback regulation instruction of secondary current and / or secondary voltage; and according to the feedforward regulation instruction and the feedback regulation instruction, regulating secondary current and / or secondary voltage to realize closed-loop automatic control of the wet-type electric dust remover. The automatic control method has better anti-interference capability and energy-saving effect, and can realize closed-loop automatic control of the wet-type electric dust remover.

Description

technical field [0001] The invention belongs to the technical field of dust removal and environmental protection control for thermal power units, and in particular relates to an automatic control method for wet electrostatic precipitators of thermal power units. Background technique [0002] Thermal power generation accounts for about 73% of my country's power generation, and is the largest power generation method. However, coal-fired power stations will inevitably emit soot and other pollutants, which will affect my country's atmospheric environment. Electrostatic precipitator is one of the technologies to effectively curb smoke and dust pollution in thermal power plants, and it has been widely used at present. With the continuous improvement of national environmental protection standards, the emission concentration of electrostatic precipitators is also required to be lower, and the reduction of emission concentration of electrostatic precipitators requires the electrostat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03C3/68B03C3/16
CPCB03C3/68B03C3/16
Inventor 苏志刚孙雨歌王培红郝勇生
Owner SOUTHEAST UNIV
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