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No partial discharge frequency conversion resonance experiment system

A frequency conversion resonance and test system technology, applied in the electric power field, can solve the problems of large partial discharge interference and failure to meet the requirements of partial discharge measurement and test, and achieve high use value and economic value

Active Publication Date: 2007-11-07
SIEYUAN ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The device has high efficiency and low requirements on the on-site power supply, but the partial discharge interference is large, which cannot meet the requirements of the on-site partial discharge measurement test

Method used

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  • No partial discharge frequency conversion resonance experiment system
  • No partial discharge frequency conversion resonance experiment system
  • No partial discharge frequency conversion resonance experiment system

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Embodiment Construction

[0015] As shown in Figure 1, the whole device includes a low-interference variable frequency power supply 1, an excitation transformer 2, a resonant reactor 3, a voltage divider 4, a partial discharge tester 5, a partial discharge interference suppression box 7, a detection impedance box 8, and a coupling capacitor 6 etc., the three-phase AC voltage is connected to the low-interference variable frequency power supply 1, the voltage output of the low-interference variable frequency power supply 1 is connected to the excitation transformer 2, the high voltage end of the excitation transformer 2 is connected to the resonant reactor 3, the low voltage end of the excitation transformer 2 is connected to the earth, and the resonance The output of reactor 3 is connected to the high-voltage end of voltage divider 4, the high-voltage end of coupling capacitor 6, the low-voltage end of voltage divider 4 is connected to the ground, the output end of voltage divider 4 is connected to low-in...

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PUM

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Abstract

The present invention relates to a variable-frequency resonance testing system having no partial discharge in the field of power technology. Said testing system includes the following components: low-interference variable-frequency power supply, exciting transformer,resonance rector, voltage divider, coupling capacitor, impedance-detecting box and partial discharge tester. Besides, Said invention also provides their connection mode and its testing method and steps.

Description

technical field [0001] The invention relates to a device in the field of electric power technology, in particular to a partial discharge-free frequency conversion resonance test system. Background technique [0002] When performing high-voltage tests on power system equipment, series resonance is often used to provide the high voltage required for the test, which is mainly composed of variable frequency power supply excitation transformers and high voltage reactors. When conducting tests on site, in addition to meeting the requirements of the test voltage, it is also required to be able to perform partial discharge tests on the equipment under test. The series resonant device commonly used at present cannot meet the requirements of the partial discharge test. Someone once proposed a frequency conversion series resonance device using a triode amplified sinusoidal signal power supply. Drawing lessons from this existing technology, it is relatively easy to meet the requiremen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00G01R31/02
Inventor 陈邦栋黄金成
Owner SIEYUAN ELECTRIC CO LTD
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