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Turn-to-turn overvoltage detection device for dry-type iron core reactor

A detection device and reactor technology, applied in the direction of measuring device, instrument, measuring electricity, etc., can solve problems such as poor stability of test voltage value

Inactive Publication Date: 2020-07-31
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention is based on the standard GB1094.6-2011 allowing the use of high-frequency pulse oscillation voltage tests for inter-turn insulation detection of reactors, and at the same time, in order to solve the problem of poor stability of the test voltage value of the pulse oscillation test circuit given in the traditional standards, the present invention The invention provides a pulse oscillation test device for the inter-turn overvoltage inspection of dry-type iron core reactors

Method used

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  • Turn-to-turn overvoltage detection device for dry-type iron core reactor
  • Turn-to-turn overvoltage detection device for dry-type iron core reactor
  • Turn-to-turn overvoltage detection device for dry-type iron core reactor

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Embodiment Construction

[0012] 1. If figure 1 As shown, a circuit connection schematic diagram of a dry-type iron core reactor inter-turn overvoltage detection device, which includes a voltage regulator T 1 , high voltage transformer T 2 , trigger transformer T 3 , rectifier silicon stack D, protection resistor R 1 , the high-voltage arm resistance R of the resistor divider H , Low voltage arm resistance R L , Controllable discharge ball gap S, charging capacitor Cc, high-voltage arm capacitor C of the capacitor voltage divider H , low voltage arm capacitance C L and Oscilloscope Z. The regulator T 1 The input end of the voltage regulator is connected to the grid, the voltage regulator T 1 The output end of the high voltage transformer T 2 One end of the primary winding is connected, the high-voltage transformer T 2 One end of the secondary winding is connected to the cathode of the rectifier silicon stack D, and the anode of the rectifier silicon stack D is connected to the protection resi...

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Abstract

The invention relates to a turn-to-turn overvoltage detection device for a dry-type iron core reactor. The turn-to-turn overvoltage detection device comprises a boosted circuit, a direct current charging circuit, an oscillation discharging circuit and a tested circuit. Compared with a general lightning impulse test detection device, the turn-to-turn fault of the dry-type iron core reactor under the overvoltage condition can be detected more easily, the device is more suitable for detecting the dry-type iron core reactor with many turns and small electrical parameter variation caused by the turn-to-turn fault and has a very wide application prospect.

Description

technical field [0001] The invention relates to a reactor turn-to-turn fault detection device, in particular to a dry-type iron core reactor turn-to-turn overvoltage detection device based on a pulse oscillation method. Background technique [0002] Reactor is an important part of power system, it is frequently used to limit short-circuit current, absorb line reactive power, and prevent overvoltage from damaging the power grid. Dry-type reactors are divided into dry-type air-core reactors and dry-type iron-core reactors. Compared with dry-type air-core reactors, dry-type iron-core reactors have the advantages of energy saving, applicable linearity, no electromagnetic pollution, and use Long life and other advantages. Dry-type iron-core reactors need to be switched frequently during use. During the switching process, a high-frequency, high-amplitude exponentially attenuated oscillating overvoltage will be generated on the reactor, and its voltage amplitude will exceed severa...

Claims

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Application Information

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IPC IPC(8): G01R31/12
CPCG01R31/1263
Inventor 祝寿慧王永红聂洪岩
Owner HARBIN UNIV OF SCI & TECH
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