Drive control method and device of final dusting high-voltage motor of steel mill

A technology for secondary dust removal and electric motors, which is applied in the direction of AC motor control, control system, electrical components, etc., can solve the problems of scrapped electrical equipment, waste of costs, and the failure of high-voltage motors for secondary dust removal to operate normally, and achieve the effect of saving electric energy.

Inactive Publication Date: 2015-01-28
武钢集团有限公司
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Problems solved by technology

In this way, the original water resistance will become useless equipment, leading to the scrapping of electrical equipment in advance and wasting costs
At the same time, when the driving device of the secondary dust removal high-voltage motor fails, the secondary dust removal high-voltage motor cannot operate normally

Method used

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  • Drive control method and device of final dusting high-voltage motor of steel mill
  • Drive control method and device of final dusting high-voltage motor of steel mill
  • Drive control method and device of final dusting high-voltage motor of steel mill

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Embodiment Construction

[0017] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0018] like figure 1 As shown, for the secondary dust removal high-voltage motor, in the inverter drive mode, through K 1 closed, K 2 Hit the frequency conversion position, namely K 2 The moving end of the inverter is connected to the outlet end of the inverter, and the QS 1 closed, QS 2 disconnected, and the secondary line of the motor is short-circuited. After the high-voltage power supply is closed, the inverter is in a ready state. The input line of the secondary dust removal high-voltage motor is connected to 10KV high voltage. After clicking on the start, the motor can run at the...

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Abstract

The invention discloses a drive control method and device of a final dusting high-voltage motor of a steel mill. When a frequency converter serves as main drive, an outgoing line of the frequency converter is connected with an inlet line of the motor, and a secondary line of the motor is in short connection in the working process. When the motor breaks down, the outgoing line of the frequency converter and the inlet line of the motor are disconnected, the power frequency is connected to the inlet line of the motor, the secondary line of the motor is connected with a water resistance cabinet, the resistance value of the water resistance is reduced through a pole plate of the water resistance cabinet, the running speed of the motor is increased, and when the running speed of the motor reaches the full gear, the secondary line of the motor is separated from the water resistance cabinet, and the secondary line of the motor is in short connection. The frequency converter is used for driving the final dusting high-voltage motor, the running speed of the final dusting high-voltage motor can be adjusted, the purpose of saving electric energy is achieved, and when the frequency converter serves as the main drive, the water resistance standby drive is added, and it is guaranteed that when the main drive breaks down, the high-voltage motor can normally run.

Description

technical field [0001] The invention relates to the field of drive control of high-voltage motors in steelworks, in particular to a drive control method and device for secondary dust removal high-voltage motors in steelworks. Background technique [0002] Secondary dust removal is a process equipment that uses large fans, dust removal pipes, and on-site dust removal valves to capture the smoke and dust generated at the production site, and then purifies the flue gas through a low-pressure pulse bag filter. Large-scale fans provide the necessary suction for the dust removal system. The shutdown of the fan equipment will directly cause the environmental protection indicators of the steel plant to exceed the standard, constitute an environmental protection accident, and seriously cause the entire plant to stop production. Consumption of more than 60%, a direct impact on energy consumption indicators. [0003] The original fan motor is driven by water resistance soft start mod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P25/16
Inventor 陈鸣韩军王良斌赵晓斌雷铭邓子辉蔡颖李斌王明靖
Owner 武钢集团有限公司
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