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On-line intelligent monitoring system for transformer and intelligent analysis diagnosis method thereof

An intelligent monitoring and transformer technology, applied in the field of transformers, can solve problems such as difficult to ensure operational reliability, waste of manpower, material resources, low sensitivity, etc., to improve the level of real-time monitoring and computer-aided diagnosis, reliable equipment operation, and more efficient equipment operation Effect

Inactive Publication Date: 2004-03-24
TEBIAN ELECTRIC APP CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Since the test voltage is far lower than the operating voltage, the sensitivity is very low, and often only some major defects that are generally damp or have been close to penetrating channels can be found; Maintenance wastes a lot of manpower and material resources, but it is difficult to ensure operational reliability

Method used

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  • On-line intelligent monitoring system for transformer and intelligent analysis diagnosis method thereof
  • On-line intelligent monitoring system for transformer and intelligent analysis diagnosis method thereof
  • On-line intelligent monitoring system for transformer and intelligent analysis diagnosis method thereof

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Embodiment Construction

[0020] In this embodiment, the on-line monitoring items of the transformer are the partial discharge of the transformer, the gas in the oil, the water in the oil, the iron core current, the insulation performance of the bushing, the temperature of the hottest point of the winding, etc. introduce.

[0021] 1. Transformer partial discharge monitoring device

[0022] Statistical analysis of actual faults of transformers shows that insulation faults are the main reason affecting the normal operation of transformers. At present, large-scale power transformers of 110kV and above still mainly adopt oil-paper insulation structure, and insulation failures often originate from the aging of oil-paper insulation caused by partial discharge. Oil-paper insulation is the weak link of power transformers, and partial discharge is an important factor causing insulation failure. Partial discharge refers to the phenomenon of electrical discharge or breakdown in a local area in an insulating med...

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Abstract

The invention refers to a transformer on-line intelligent monitoring system and its intelligent diagnosis method. It includes all kinds of sensors for the transformer's dynamic capability monitoring device, some electric signals collected by the sensors connected with A / D converting circuit through the amplifier and regulating circuit, some ones connected with industrial computer through A / D collecting card or interface circuit to be processed by the foreground computer, then transmitted into the background CPU transformer fault diagnosis system for diagnosis and analysis, to obtain the monitoring results. The method: inputting various signal data into the computer, making the computer combined with the stored information database to carry out on-line real-time diagnosis and alarm on the abnormal condition.

Description

technical field [0001] The invention belongs to the technical field of transformers, and relates to an online intelligent monitoring system for transformers and an intelligent analysis and diagnosis method thereof. Background technique [0002] In our country, the maintenance of transformers has been developed from being completely passive decades ago to maintenance after an accident has developed into a planned and regular maintenance, which is a great progress. History is the best witness. Due to the use of regular testing, many defects have been found, many accidents have been avoided, and huge economic and social benefits have been obtained. However, with the increase of equipment capacity and rated voltage, many contradictions have become more prominent. For example, for power equipment of 110kV and above, during regular blackout tests, 10kV AC is still added to measure tgδ, and 1~5kV DC is added to measure insulation resistance. Since the test voltage is far lower th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
Inventor 张冠军严璋欧阳南尼吴文强王英华郭长泰赵文彬魏铁军
Owner TEBIAN ELECTRIC APP CO LTD
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