Test unit for monitoring oil-paper insulation state

A test device, oil-paper insulation technology, applied in the direction of testing the dielectric strength, etc., can solve the problems of complex operation, destructiveness of the tested product, expensive test equipment, and less information

Inactive Publication Date: 2010-05-26
XI AN JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] For the traditional diagnosis of the insulation state of oil-paper insulation equipment and materials, it is necessary to collect solid insulation samples, which is complicated to operate and destructive t

Method used

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  • Test unit for monitoring oil-paper insulation state
  • Test unit for monitoring oil-paper insulation state
  • Test unit for monitoring oil-paper insulation state

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Embodiment Construction

[0018] Further describe in detail below in conjunction with accompanying drawing;

[0019] A test device for monitoring the state of oil-paper insulation, as attached figure 1 As shown, it includes computer 1, electrometer 2, control bus communication cable 3, the GPIB control card is installed in the PCI slot of the computer, and the GPIB communication cable 3 is connected to the GPIB interface 12 of the electrometer 2 and the PCI slot inserted in the computer 1. The interface 13 of the GPIB control card in the slot, the high-voltage DC power supply 5 and the ammeter 6 are arranged in the electrometer 2, and one end of the control bus communication cable 3 is connected to the control bus interface 12 of the electrometer 2, and the other end is connected to the control bus control in the computer 1. The interface 13 of the card, the low-voltage terminal interface 10 of the high-voltage DC power supply 5 and the grounding interface 9 of the electrometer 2 are jointly connected ...

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Abstract

The invention provides a test unit for monitoring an oil-paper insulation state, and is suitable for the fields of transformers and oil-paper insulation monitoring. The test unit comprises a computer, an electrometer and a control bus communication cable; a high voltage DC power source and an ammeter are arranged in the electrometer; one end of the control bus communication cable is connected with a control bus interface of the electrometer, while the other end is connected with an interface of a control bus control card in the computer; a low voltage end interface of the high voltage DC power source and a grounding interface of the electrometer are grounded together; a high voltage end of the high voltage DC power source is connected with a first electrode of a product to be tested through a high voltage wire; a measuring end of the ammeter is connected with a second electrode of the product to be tested; and the test unit is provided with a control panel capable of displaying and storing data and setting parameters. The test unit is simple to operate, has the current detecting rate at least 1sps, can generate rich measurement information, is convenient to analyze and process test results, and has lower cost than foreign test instruments.

Description

technical field [0001] The invention relates to the field of state monitoring of oil-paper insulation, and relates to an oil-paper insulation equipment and a test device for monitoring the state of material insulation. Background technique [0002] Oil-paper insulation materials and equipment, especially the most widely used large-scale oil-immersed power transformer, have a direct relationship with the safety and stability of the power system. According to statistics, the operation accidents of transformers are mainly caused by the failure of their insulation systems, so their life Much depends on the aging state of the oil-paper insulation system. During the operation of the transformer, the oil-paper insulation is subjected to various external stresses such as heat, electricity, machinery, and chemistry for a long time, which leads to a gradual decline in its own insulation and mechanical properties and may cause transformer failure. Therefore, accurately diagnosing the ...

Claims

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Application Information

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IPC IPC(8): G01R31/12
Inventor 张冠军魏建林王世强杨双锁董明刘孝为霍大渭
Owner XI AN JIAOTONG UNIV
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