Electric energy extracting device for cable partial discharge on-line detection

A live detection and partial discharge technology, which is applied in the direction of battery circuit devices, circuit devices, collectors, etc., can solve problems such as inability to take power from three-phase cables, and achieve power supply quality, stability, accuracy and reliability Effect

Active Publication Date: 2013-08-14
ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD +1
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a cable partial discharge electrification detection inductive power-taking device, which can solve the problem that the current inductive power-taking method cannot get power from three-phase cables

Method used

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  • Electric energy extracting device for cable partial discharge on-line detection
  • Electric energy extracting device for cable partial discharge on-line detection
  • Electric energy extracting device for cable partial discharge on-line detection

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Embodiment Construction

[0035] The structural diagram of a cable partial discharge electrification detection induction power pick-up device is as follows figure 1 As shown, a cable partial discharge electrification detection inductive power pick-up device is composed of a clamp transducer 1, a controllable rectifier 3, a rechargeable battery pack 4 and a load 5;

[0036] The structure of the clamp transducer 1 is as figure 2 As shown, the clamp transducer 1 consists of a clamp housing 11, an A-phase winding core 12, an A-phase winding coil 13, a B-phase winding core 14, a B-phase winding coil 15, a C-phase winding core 16, C-phase winding coil 17, output aviation plug 18;

[0037] The connection of the components of the clamp transducer 1: the A-phase winding coil 13 is wound on the A-phase winding magnetic core 12, the B-phase winding coil 15 is wound on the B-phase winding magnetic core 14, the C-phase winding The coil 17 is wound on the C-phase winding magnetic core 16; one end of the A-phase w...

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Abstract

The invention discloses an electric energy extracting device for cable partial discharge on-line detection. The device comprises a clamp-on transducer, a controlled rectifier and a rechargeable battery pack. When the device is used for field inspection, the clamp-on transducer of the device is connected at any position along a to-be-detected cable in a sleeving manner and can be used for inducing three-phase alternating current. The induced three-phase alternating current is sent to the controlled rectifier for rectifying, and the rectified DC can be used to charge the rechargeable battery pack, so as to provide a high-quality power supply to a load. The controlled rectifier comprises a control center, the control center samples the rectified DC voltage and compares the rectified DC voltage with the voltage of the rechargeable battery pack in real time, and through the adjustment of the conduction angle of the controlled rectifier, and the rectified DC voltage can be adjusted so as to ensure constant rectified DC voltage. According to technical scheme disclosed by the invention, the device can take electric energy any position on the cable between a switch cabinet and a terminal device and can provide the high-quality power supply for the load.

Description

technical field [0001] The invention belongs to the live monitoring and application fields of smart grids, in particular to an inductive power-taking device in live detection of cable partial discharge. Background technique [0002] Power cables are important equipment in the power system, which can be connected to user equipment by switch cabinets. During the long-term operation of the cable, due to the change of the operating environment, the influence of external factors and the aging of the insulation itself, the insulation degree is often reduced. Partial discharge is one of the more effective technical means to detect the insulation state at present, and has been widely recognized by the industry. Partial discharge live detection has the characteristics of no power failure during detection, detection data that truly reflects the operating state of the system, and high detection accuracy. It is more and more widely used. However, the portable detection equipment used ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J17/00H02J7/02H02J50/10
Inventor 张炜邓雨荣郭丽娟陶松梅邬蓉蓉吕泽承梁俊斌苏永立唐明
Owner ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD
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