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Transformer induced switching impulse voltage generation device triggered by IGBTs

A technology for operating impact and generating devices, which is applied to output power conversion devices, electrical components, and AC power input to AC power output. Effect

Inactive Publication Date: 2014-11-26
ELECTRIC POWER SCI RES INST OF GUIZHOU POWER GRID CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is neither a complete study on the relationship between the circuit component parameters and the waveform parameters of the operating impulse voltage, nor a study on the replacement of the ball gap with power electronic switches

Method used

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  • Transformer induced switching impulse voltage generation device triggered by IGBTs
  • Transformer induced switching impulse voltage generation device triggered by IGBTs
  • Transformer induced switching impulse voltage generation device triggered by IGBTs

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Embodiment Construction

[0034] Further describe in detail below in conjunction with accompanying drawing;

[0035] as attached figure 1 As shown, an IGBT-triggered transformer induction operation impulse voltage generating device includes: an AC power supply 1 connected to a voltage regulator 2, through a current limiting resistor 3 and a rectifier diode 4 through the control of the first IGBT tube 6 in the IGBT module 5 The main capacitor 9 is charged, and after the main capacitor is charged, the IGBT tube 7 is turned on by triggering, and the primary side of the transformer 14 is discharged through the wave head resistor 11, the wave tail resistor 10, the wave modulation inductor 12, and the wave modulation capacitor 13. The secondary side senses the operating surge voltage. The IGBT module is controlled by a drive circuit 8 . The operating impulse voltage is measured by the impulse high-voltage divider 15, which is composed of a high-voltage arm 17 and a low-voltage arm 16, connected to an oscil...

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Abstract

The invention discloses a transformer induced switching impulse voltage generation device triggered by IGBTs. The device comprises an AC power supply, a voltage regulator, a current-limiting resistor, a rectifier module, an IGBT module, a main capacitor and a transformer. The power supply charges the main capacitor through the IGBT module, and the IGBT module is turned on through triggering, so that the main capacitor discharges a primary side of the transformer; a switching impulse voltage is induced on a secondary side and measured by an impulse high-voltage bleeder, the impulse high-voltage bleeder is connected with an oscilloscope through a coaxial cable, and the waveform of the switching impulse voltage is displayed on the oscilloscope. By the adoption of the device, non-oscillating and oscillating switching impulse voltages can be generated; except the transformer and the bleeder, all the other components operate in a low-voltage environment, so that the generated voltage is low in dispersity, disruptive discharge signals are not generated, and the device is applicable to laboratories, especially to field. The device has the advantages of being easy to operate, convenient to move, accurate in waveform and applicable to field measurement and partial discharge measurement.

Description

technical field [0001] The invention relates to the technical field of impulse voltage generators, and relates to the research subject of using IGBT to trigger induction operation impulse voltage. Background technique [0002] In normal operation, power equipment not only needs to withstand power frequency overvoltage under normal working conditions, but also needs to withstand lightning overvoltage and operating overvoltage frequently. Therefore, it is very necessary to detect the impulse voltage withstand level of power equipment on site. The national standard GB1094.3-2003 specifies power transformers with a maximum voltage greater than 170kV, and the operation impact test is a routine test. The operation impulse voltage test is also an important part of the field test. The national standard GB / T 16927.3-2010 clearly stipulates the waveform of the impulse voltage in the on-site handover procedure of the equipment. It not only stipulates the traditional lightning impulse a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M5/293
Inventor 黄军凯刘崇滨曾华荣赵立进吕黔苏刘华麟杨佳鹏任明董明张崇兴
Owner ELECTRIC POWER SCI RES INST OF GUIZHOU POWER GRID CO LTD
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