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Partial discharge detection equipment

A partial discharge detection and partial discharge technology, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problem of difficult to use cable intermediate joint fault monitoring and other problems

Active Publication Date: 2019-11-01
SHENZHEN POWER SUPPLY BUREAU
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] Based on this, it is necessary to provide a partial discharge detection device for the problem that partial discharge detection technology is difficult to apply to the fault monitoring of cable intermediate joints

Method used

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Embodiment Construction

[0062] In order to make the above purpose, features and advantages of the present application more obvious and understandable, the specific implementation manners of the present application will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, the present application can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific implementation disclosed below.

[0063] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another elem...

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Abstract

The application relates to partial discharge detection equipment for detecting characteristic gas produced by a cable intermediate joint due to partial discharging or partial heating. The partial discharge detection equipment comprises a modulating laser source, a gas detection device, a spectrum receiving device and a signal receiving processing device; the modulating laser source is used for emitting the laser; the gas detection device is in signal connection with the modulating laser source and used for contacting the characteristic gas; the spectrum receiving device is in signal connectionwith the gas detection device; the signal receiving processing device is electrically connected with the modulating laser source and the spectrum receiving device and used for controlling on-off of the modulating laser source and used for receiving and processing the data sent by the spectrum receiving device. The partial discharge detection equipment can realize the long-term detection on the partial discharge and insulation layer ageing degree of the crosslinked polyethylene cable intermediate joint and cannot be interfered by the external electromagnetism, and has the advantages of being simple in structure, high in stability and high in reliability, and can guarantee the stable running of the power grid.

Description

technical field [0001] The present application relates to the technical field of power cable fault monitoring, in particular to a partial discharge detection device. Background technique [0002] With the gradual increase in the utilization rate of urban distribution network cables, the demand for cable intermediate joints also increases. Ordinary cable cold-shrink intermediate joints have a high failure rate, which seriously threatens the safe operation of the power grid and even leads to tripping and power failure. The improved cross-linked polyethylene cable intermediate joint has the advantages of simple structure, large carrying capacity and convenient laying. However, due to various factors, the XLPE cable intermediate joint still has partial discharge and local heating caused by the large connection resistance, which accelerates the aging of the XLPE cable intermediate joint protective layer and affects the cable. stable operation. [0003] At present, cable fault ...

Claims

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Application Information

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IPC IPC(8): G01R31/12G01N21/31
CPCG01N21/31G01R31/1218G01R31/1272
Inventor 赵法强
Owner SHENZHEN POWER SUPPLY BUREAU
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