Mobile compact on-site high-voltage test device

A high-voltage test, compact technology, applied in circuit devices, AC network circuits, electrical components, etc., can solve problems such as inability to meet ultra-high voltage transformers, and achieve easy magnetic saturation, small transmission delay, and high isolation voltage. Effect

Pending Publication Date: 2019-11-22
WUHAN NARI LIABILITY OF STATE GRID ELECTRIC POWER RES INST +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the compensation capacitor of this device is only composed of 2 sets of capacitor banks, and the total rated capacity of the compensation capacitor is 10500kVar, which cannot meet the needs of field tests of ultra-high voltage and ultra-high voltage transformers.

Method used

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  • Mobile compact on-site high-voltage test device
  • Mobile compact on-site high-voltage test device
  • Mobile compact on-site high-voltage test device

Examples

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Embodiment Construction

[0029] In order to better explain the present invention and facilitate understanding, the present invention will be described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0030] Such as figure 1 As shown, a mobile compact on-site high-voltage test device of the present invention is used for on-site tests on disassembled ultra-high voltage transformers and ultra-high voltage transformers. The device includes a variable frequency power supply 1 and a reactive power compensation module 3. 10. A rectifier 11, an inverter 12, and a filter 13 are connected in sequence; the reactive power compensation module 3 includes a low-voltage dynamic switching capacitor bank 4, a step-up transformer 2, and a fixed capacitor bank 5. The output terminal of the variable frequency power supply 1 is connected to the wireless The low-voltage end of the power compensation module 3, the low-voltage end of the reactive power compensation module 3 are con...

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Abstract

The invention relates to a mobile compact on-site high-voltage test device. The device is used for carrying out on-site tests on a split ultrahigh-voltage transformer and an extra-high-voltage transformer. The device comprises a variable-frequency power supply and a reactive power compensation module, the reactive compensation module comprises a low-voltage dynamic switching capacitor bank, a boosting transformer and a fixed capacitor bank; the output end of the variable-frequency power supply is connected to the low-voltage end of the reactive power compensation module, the low-voltage end ofthe reactive power compensation module is connected with the low-voltage dynamic switching capacitor bank in parallel, the boosting transformer is arranged between the low-voltage end and the high-voltage end of the reactive power compensation module, and the high-voltage end of the reactive power compensation module is connected with the fixed capacitor bank in parallel. According to the invention, reactive compensation dynamic fine compensation and power supply output single-phase and three-phase switching can be realized, and the device is suitable for tests of the split ultrahigh-voltagetransformer and the extra-high-voltage transformer.

Description

technical field [0001] The invention relates to the field of field test devices for transformers, in particular to a mobile compact field high-voltage test device. Background technique [0002] Ultra-high voltage power transformers and UHV power transformers are the most important components of power transmission projects, and they are also one of the most complex and difficult to transport and install among many power transformation equipment. Their safety and quality have seriously affected the overall power transmission and transformation projects. schedule. For disassembled ultra-high voltage and ultra-high voltage transformers, many links such as dismantling, transportation, and on-site assembly are bound to be added. Potential defects may be caused in each link, which increases quality control factors. For example, iron cores and coils may be displaced during transportation. , deformation; part of the shielding (electrical shielding) of the body is disassembled and tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/18
CPCH02J3/1842Y02E40/30
Inventor 程林张杰江翼袁聪周文刘梦娜徐惠朱太云陈忠
Owner WUHAN NARI LIABILITY OF STATE GRID ELECTRIC POWER RES INST
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