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A DC cross-channel fault detection device and method

A fault detection and fault technology, applied in the field of DC mutual channel fault detection devices, can solve the problem of inability to effectively detect DC mutual channel, and achieve the effect of improving stability and reliability, accurate and effective detection

Active Publication Date: 2021-11-02
SHENZHEN TIEON ENERGY TECH
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Problems solved by technology

[0005] In view of this, the purpose of the present invention is to provide a DC cross-channel fault detection device to solve the problem that the DC cross-channel cannot be effectively detected in the prior art
[0006] Another object of the present invention is to provide a DC cross-channel fault detection method to solve the problem that the DC cross-channel cannot be effectively detected in the prior art

Method used

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  • A DC cross-channel fault detection device and method
  • A DC cross-channel fault detection device and method
  • A DC cross-channel fault detection device and method

Examples

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no. 2 example

[0080] see Image 6 , the embodiment of the present invention also provides a DC cross-channel fault detection method, which is applied to the host of the DC cross-channel fault detection device 100 described in the first embodiment,

[0081] The DC cross-channeling fault detection method includes:

[0082] Step S101, control the first switch 140 to close and the second switch 150 to open, and obtain the first voltage of the positive pole of the first bus bar 110 in the current state, the second voltage of the negative pole of the first bus bar 110 and the intercrossing detection bridge 130 The middle position of the third voltage.

[0083] Step S102, control the first switch 140 to open and the second switch 150 to close, and obtain the fourth voltage of the positive pole of the first bus bar 110 in the current state, the fifth voltage of the negative pole of the first bus bar 110 and the intercrossing detection bridge The sixth voltage at the middle position of 130.

[00...

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Abstract

Embodiments of the present invention provide a DC cross-channel fault detection device and method, which relate to the technical field of fault detection. The DC cross-channel fault detection device includes a first bus, a second bus, a cross-channel detection bridge, a first switch, a second switch and a host, wherein the two ends of the mutual channel detection bridge are respectively connected to the positive pole of the first bus, the first The negative pole of the bus bar is electrically connected, the first switch and the second switch are connected in series between the positive pole of the second bus bar and the negative pole of the second bus bar, and the mutual crossing detection bridge includes a detection node, and the detection node is electrically connected to both the first switch and the second switch . The DC cross-channeling fault detection device and method provided by the invention have the advantages of realizing accurate and effective detection, improving the stability and reliability of the DC system and reducing the workload of staff.

Description

technical field [0001] The present invention relates to the technical field of fault detection, in particular to a DC cross-channel fault detection device and method. Background technique [0002] Substation DC power supply system is an important part of the substation power supply system, which is equivalent to the "heart" of the substation. The important substation systems of 110KV and 220KV adopt the "two charging and two charging" mode (two sets of chargers, two sets of storage batteries) to form two independent DC power supply systems; There is an electrical connection between the two DC systems, which is often referred to as a ring network failure. [0003] The problem of DC cross-channeling is a kind of fault problem in the operation of substations, which has a great impact on the stability and reliability of the entire power system operation. The problem of DC cross-channeling in the DC system will cause serious harm. If the two batteries run in parallel, a huge cu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/40
CPCG01R31/40
Inventor 刘忠祥欧阳建
Owner SHENZHEN TIEON ENERGY TECH
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