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Short circuit fault detection device

A detection device and a technology for short-circuit faults, which are applied in the field of power electronics and can solve problems such as inability to detect short-circuit lines of power electronic transformers in time

Active Publication Date: 2021-07-06
GUANGDONG POWER GRID CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above problems, the present invention provides a short-circuit fault detection device, which is used to solve the problem that the short-circuit line of the power electronic transformer cannot be detected in time in the prior art

Method used

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Examples

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Embodiment

[0035] Please refer to Figure 1 to Figure 6 , a short-circuit fault detection device 1 of this embodiment can be applied to the short-circuit fault detection of power electronic transformers. By connecting the detection device to each output bus, if the system is powered off or damaged during a short circuit, then You can know whether there is a short-circuit fault for the current bus by checking the corresponding changes of the device. The components of the short-circuit fault detection device 1 will be described in detail below.

[0036] Such as figure 1 As shown, the short-circuit fault detection device 1 mainly includes two major components: an insulating box 10 and an indicating tube 20 . Wherein, the insulating box 10 includes a first side wall 101 and a second side wall 102 parallel to each other, and a third side wall 103 and a fourth side wall 104 opposite to each other, preferably, the third side wall 103 and the fourth side wall 104 are also arranged parallel to...

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Abstract

The invention provides a short-circuit fault detection device, which is applied to the short-circuit detection of power electronic transformers. The device includes: an insulating box and an indicating tube, and the insulating box is provided with parallel first The metal plate and the second metal plate, the first metal plate and the second metal plate are connected by a conductor at the second side wall; the second metal plate and the fourth side wall form an air cavity, and the second metal plate can be horizontally placed in the air cavity Sliding inside, the air cavity communicates with the indicating tube, wherein the indicating tube includes a closed part and an opening part, and a slider is arranged inside the indicating tube. The present invention can detect the short-circuit fault of the output bus of the power electronic transformer, and can know whether the current bus has an over-short circuit by checking the position changes of the sliders in each detection device of the output bus, and realize the rapid positioning of the short-circuit fault , thereby improving troubleshooting efficiency, etc.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to a short-circuit fault detection device. Background technique [0002] When the power electronic transformer is running in the system, short circuit is unavoidable, and for short circuit fault types, especially the outlet short circuit is the most common. When a short-circuit occurs in an output bus, a huge overload current will be generated. For power electronic transformers that usually include protection circuits, the system power-off protection is often performed in the first time. At this time, due to the rapid power-off protection, the system will not be able to keep relevant data in time, so if you want to know which port is short-circuited, you can only perform short-circuit troubleshooting on each output bus, so the troubleshooting efficiency is low. Contents of the invention [0003] In view of the above problems, the present invention provides a short-circu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/52G01R31/58
CPCG01R31/50G01R31/62
Inventor 梁万龙何建宗
Owner GUANGDONG POWER GRID CO LTD
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