High altitude area 750 kV shunt reactor local discharge test device

A partial discharge and test device technology, applied in the direction of measuring devices, instruments, measuring electricity, etc., can solve the problems of large interference and unrecognizable reactor discharge signals, etc., and achieve the effect of reducing interference and improving the external insulation level of equipment

Inactive Publication Date: 2017-12-05
STATE GRID CORP OF CHINA +3
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  • Abstract
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Problems solved by technology

[0005] At present, there is no precedent for partial discharge test of 750kV high-voltage shunt reactor in China. The original 500kV shunt reactor partial discharge test device has great interference at the high altitude of 750kV voltage level, and cannot identify the discharge signal from inside the reactor.

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  • High altitude area 750 kV shunt reactor local discharge test device
  • High altitude area 750 kV shunt reactor local discharge test device
  • High altitude area 750 kV shunt reactor local discharge test device

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Embodiment Construction

[0026] In order to better understand the present invention, the content of the present invention is further illustrated below in conjunction with the examples, but the content of the present invention is not limited to the following examples. Those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms are also within the scope of the claims listed in this application.

[0027] like figure 1 As shown, the 750kV shunt reactor partial discharge test device in the high altitude area provided by the embodiment of the present invention, the device includes a variable frequency power supply, an isolation transformer (T), a series resonant capacitor (C 0 ), parallel compensation capacitor (C 1 、C 2 ), the reactor under test (L 0 ), choke reactor (L P ), and the partial discharge measurement circuit (PD); the parallel compensation capacitor can also be used as a capacitor voltage divider. Variable frequency power supply, ...

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Abstract

The invention relates to a high altitude area 750 kV shunt reactor local discharge test device, which comprises a variable frequency power supply, an isolation transformer T, a series resonant capacitor C0, parallel compensation capacitors C1 and C2, a tested reactor L0, a wave resistance reactor LP and a local discharge measurement loop PD. Through the device, a local discharge experiment can be done on the 750 kV shunt reactor in the high altitude area of Qinghai to test the insulation performance, and the shunt reactor can be ensured to operate normally and safely.

Description

technical field [0001] The invention relates to the technical field of partial discharge testing of shunt reactors, in particular to a partial discharge testing device for 750kV shunt reactors in high altitude areas. Background technique [0002] High-voltage shunt reactor is an indispensable and important equipment in high-voltage, long-distance transmission network. It is mainly used to compensate the capacitive current on the line and limit the increase of system power frequency voltage. Shunt reactor is an important component of reliable operation of the power grid. part, its security and stability directly affect the security of the power grid. [0003] With the large-scale construction of 750kV ultra-high voltage long-distance transmission lines, the number of applications of 750kV high-voltage shunt reactors in Northwest Power Grid has greatly increased. At the same time, 750kV high-voltage shunt reactors have more and more problems during operation. In addition to p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12
CPCG01R31/1263
Inventor 王生杰康钧李江涛于鑫龙曲全磊何家欣郑敏君沈洁王理丽林万德李渊李秋阳包正红
Owner STATE GRID CORP OF CHINA
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