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Transformer on-load tap changer fault diagnosis system

A fault diagnosis system and voltage regulating switch technology, applied in the field of transformers, can solve the problems of inaccurate fault judgment of on-load voltage regulating switches, inability to accurately analyze transformer status information, etc.

Pending Publication Date: 2017-11-17
海南电网有限责任公司琼海供电局
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The embodiment of the present application provides a transformer OLTC fault diagnosis system, which is used to solve the problem that the state information of each action event generated by the operation of the transformer OLTC cannot be accurately analyzed in the prior art, resulting in the failure of the OLTC inaccurate judgment

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  • Transformer on-load tap changer fault diagnosis system
  • Transformer on-load tap changer fault diagnosis system
  • Transformer on-load tap changer fault diagnosis system

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Embodiment Construction

[0037] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments of the present application and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0038] figure 1 It is a schematic diagram of the implementation structure of a transformer on-load tap changer fault diagnosis system provided in the embodiment of the present application. The transformer on-load tap changer fault diagnosis system provided in the embodiment of the present application is applicable to all types of on-load tap changer ...

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Abstract

The application discloses a transformer on-load tap changer fault diagnosis system that includes an acceleration sensor arranged on the housing of a transformer and configured to detect a vibration signal during the operation of an on-load tap changer; a current sensor having a signal detection end clamped to any phase of power line of a driving motor for driving the on-load tap changer to operate in order to detect the current signal of the driving motor; an interference signal filtering module connected with the current sensor and the acceleration sensor and configured to filter out interference signals; a host computer comprising an envelope detection module, an analysis module and a display module, wherein the envelope detection module and the analysis module are connected with the interference signal filtering module and are connected with the display module. The transformer on-load tap changer fault diagnosis system inputs the filtered vibration signal and current signal into the envelope detection module and the analysis module for analysis to accurately determine the faults of the on-load tap changer.

Description

technical field [0001] The present application relates to the technical field of transformers, in particular to a fault diagnosis system for a transformer on-load tap changer. Background technique [0002] A switching operation of a transformer on-load tap changer (OLTC for short) includes a series of action events, such as spring-loaded energy storage, selector switch action, transfer switch switching, switch contact collision, etc. These action events contain a wealth of mechanical vibration information, and must meet a certain timing to ensure the normal switching action of the OLTC. The vibration transmitted by the mechanical vibration signal to the transformer shell is the response of various internal excitation phenomena, including tap switch switching operation, electrodynamic or electrostatic force action, partial discharge and other operations. Therefore, the mechanical vibration signal carries an interference signal. When the mechanical vibration signal is used to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/327G01H11/00
CPCG01H11/00G01R31/327
Inventor 苏宁李邦峂程范贤赵凤德吉承龙岑琼霞黄日瑞庞小莉林家文
Owner 海南电网有限责任公司琼海供电局
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