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Method and device used for transformer neutral point protective gap actions

A technology of transformer neutral point and protection gap, applied in the field of transformers, can solve problems such as affecting the reliability of the power grid, and achieve the effect of ensuring reliability

Active Publication Date: 2013-06-05
SHENZHEN POWER SUPPLY BUREAU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in many cases, the gap between the transformer neutral point arrester and the parallel connection does not act as expected, which will affect the reliability of the power grid operation

Method used

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  • Method and device used for transformer neutral point protective gap actions

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Embodiment Construction

[0016] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0017] see figure 1 , is Embodiment 1 of the device for transformer neutral point protection gap operation of the present invention.

[0018] The device used for transformer neutral point protection gap action in this embodiment includes:

[0019] The lightning protection device 1 includes a lightning protection device base 11 and a lightning protection device main body 12 arranged on the lightning protection device base 11, and the lightning protection device base 11 is connected to the base 13;

[0020] The transformer neutral point protection gap 2 connected with the main body 12 of the lightning protection device;

[0021] A pop-up armature 3 arranged in the neutral point protection gap 2 of the transformer;

[0022] The control device 4 installed on the armature 3 is used to...

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Abstract

The invention discloses a device used for transformer neutral point protective gap actions. The device comprises a lightening protector, a transformer neutral point protective gap connected with a lightening protector main body, a pop-up armature and a control device. The lightening protector comprises at least a lightening protector base and the lightening protector main body arranged on the lightening protector base, the pop-up armature is arranged in the transformer neutral point protective gap, and the control device is assembled on the armature and used for controlling pop-up of the armature to penetrate through and pass through the transformer neutral point protective gap according to the magnitude of current flowing through the lightening protector. The invention further discloses a method used for the transformer neutral point protective gap actions. The method and the device used for the transformer neutral point protective gap actions can reduce the probability of explosion due to the fact that the lightening protector is charged with current for too long, and ensure that a power grid is reliable to operate.

Description

technical field [0001] The invention relates to the field of transformers, in particular to a method and device for neutral point protection gap operation of transformers. Background technique [0002] At present, the 110kV ~ 500kV system usually adopts an effective grounding method. In order to limit the single-phase grounding short-circuit current, prevent communication interference and relay protection setting configuration and other requirements, the actual operating power grid above 110kV generally uses a transformer neutral point to be directly grounded. , the neutral point of the rest of the transformers is grounded through the arrester or the protective gap, or connected to the ground through the arrester and the protective gap in parallel. The division of protective actions between the arrester and the parallel gap is: power frequency overvoltage and operating overvoltage are borne by the gap, lightning overvoltage and transient overvoltage are borne by the arrester...

Claims

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Application Information

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IPC IPC(8): H02H7/04H02H9/06
Inventor 严玉婷王亚舟黄炜昭姚森敬朱正国
Owner SHENZHEN POWER SUPPLY BUREAU