A current distribution system for standard current and fault current detection

A current distribution and fault current technology, applied in the direction of measuring devices, measuring electrical variables, instruments, etc., can solve the problems of increasing multiple losses, adding multiple electrical contacts, and increasing potential safety hazards, so as to improve detection reliability and facilitate expansion Flexibility, the effect of improving detection efficiency

Active Publication Date: 2017-09-15
STATE GRID CORP OF CHINA +3
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Problems solved by technology

[0003] Among them, the diversification of standard current detection items determines that it takes a long time to complete a complete detection. If each current acquisition coil is individually detected, the time required for detection will double for each additional group of coils; and because The magnitude of the fault current is large, and each electrical contact will generate a large loss. If multiple sets of current acquisition coils are used for simultaneous detection, multiple electrical contacts will be added, thereby increasing multiple safety hazards and multiple losses. , put forward higher requirements on the load capacity of the fault current source

Method used

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  • A current distribution system for standard current and fault current detection
  • A current distribution system for standard current and fault current detection
  • A current distribution system for standard current and fault current detection

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Embodiment Construction

[0019] The technical scheme of the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.

[0020] A current distribution system for standard current and fault current detection, such as figure 1 As shown, it includes the RS485 control module and the current source module respectively connected to the main control unit of the power distribution automation terminal, and also includes the current distribution module, wherein each phase current corresponds to a current distribution module, that is, the phase A current corresponds to the current distribution module The IA and B phase currents correspond to the current distribution module IB, and the C phase current corresponds to the current distribution module IC. The current distribution m...

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Abstract

The invention discloses a current distribution system for standard current and fault current detection. The current distribution module IA, the current distribution module IB, and the current distribution module IC corresponding to the phase and C phase currents are respectively connected to the current source module and the RS485 control module. Improves the efficiency of standard current sensing and the reliability of fault current sensing.

Description

technical field [0001] The invention relates to a current distribution system for standard current and fault current detection in telemetry detection of power distribution automation terminals. Background technique [0002] From the DL / T 721-2013 distribution automation remote terminal, it can be seen that the detection distribution automation terminal should not only be able to collect standard current, but also have the ability to input fault current. [0003] Among them, the diversification of standard current detection items determines that it takes a long time to complete a complete detection. If each current acquisition coil is individually detected, the time required for detection will double for each additional group of coils; and because The magnitude of the fault current is large, and each electrical contact will generate a large loss. If multiple sets of current acquisition coils are used for simultaneous detection, multiple electrical contacts will be added, ther...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R15/00
Inventor 孙健袁晓冬朱卫平戴强晟叶文良戴太文贾萌萌倪时龙
Owner STATE GRID CORP OF CHINA
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