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Fault diagnosis system of transmission part of on-load tap-changer and diagnostic method thereof

A fault diagnosis system and on-load tapping technology, applied in the direction of machine gear/transmission mechanism testing, instruments, measuring devices, etc., can solve the difficulty in realizing the tap changer drive shaft, the unrealistic tap changer monitoring, and the concentricity requirements. High and other problems, to achieve the effect of light weight, small size, strong anti-interference

Inactive Publication Date: 2010-03-10
HOHAI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the traditional method of measuring torque is to connect the torque sensor in series between the measured shafts, which is very inconvenient to install and is unrealistic for tap changer monitoring
It is reported that torque measurement based on the principle of toroidal resolver is used, but the requirements for concentricity are very high (≤0.1mm), and the requirements for anti-vibration are also high, which is quite difficult to realize in the actual monitoring of tap changer drive shaft

Method used

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  • Fault diagnosis system of transmission part of on-load tap-changer and diagnostic method thereof
  • Fault diagnosis system of transmission part of on-load tap-changer and diagnostic method thereof
  • Fault diagnosis system of transmission part of on-load tap-changer and diagnostic method thereof

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Embodiment Construction

[0019] Such as figure 1 As shown, the structure of the present invention includes a system front end made up of a torque sensor, a signal conditioning circuit, a single-chip circuit, a wireless transmitting circuit and a system back end made up of a wireless receiving circuit and a computer, and the system front end is powered by a battery, wherein: the torque The sensor is connected to the vertical transmission shaft of the on-load tap-changer. The output end of the torque sensor is connected in series with the signal conditioning circuit and the single-chip microcomputer circuit, and then connected to the input end of the wireless transmission circuit. The single-chip microcomputer circuit is also connected to the driving motor of the on-load tap-changer. , the wireless transmitting circuit and the wireless receiving circuit are wirelessly connected through an antenna, and the output end of the wireless receiving circuit is connected to a computer.

[0020] In order to illus...

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Abstract

The invention discloses a fault diagnosis system of a transmission part of an on-load tap-changer and a diagnostic method thereof, belonging to the fault diagnosis field of the on-load tap-changer ofa power transformer. The system comprises a system front end and a system rear end, wherein, the system front end is composed of a torque transducer, a signal conditioning circuit, a singlechip circuit and a wireless transmission circuit, and batteries supply power for the system front end which is fixed with a vertical transmission shaft in a binding manner; the system rear end is composed of a wireless reception circuit and a computer; a drive motor of the tap-changer triggers a monitoring system to start up for sampling, sample data are transmitted into the computer after being transmittedand received by wireless, transmission system faults are diagnosed through analyzing torque changes of the vertical transmission shaft of the tap-changer by the computer. The system of the invention has high precision, favorable stability and strong interference resistance.

Description

technical field [0001] The invention relates to an on-load tap changer transmission part fault diagnosis system and a diagnosis method thereof in electrical control engineering, and belongs to the field of on-load tap changer fault diagnosis in power transformers. Background technique [0002] Power transformer voltage regulation is mainly achieved by changing the tap position of the tapped winding, which is divided into two forms: non-excitation voltage regulation and on-load voltage regulation. The device in the transformer that connects and switches the taps of the transformer is usually called a tap changer. Switching taps does not need to remove the transformer from the power grid, that is, switch voltage regulation with load, which is called on-load voltage regulation. The tap-changer used for on-load voltage regulation is called on-load tap-changer. The on-load tap changer is the core component of the power transformer to complete the on-load voltage regulation. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/02G01L3/10
Inventor 马宏忠鞠平姚华阳姜宁王春宁韩敬东王波
Owner HOHAI UNIV
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