Cross-linked polyethylene cable detecting device

A cross-linked polyethylene and detection device technology, applied in the direction of fault location, testing dielectric strength, etc., can solve problems such as insulation faults, complexity of operating environment, structural defects of cable accessories, etc., and achieve the effect of overcoming low sensitivity

Inactive Publication Date: 2016-07-13
TIANJIN HUASHENGYUAN MACHINERY MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the increase of cable accessories year by year, insulation failures will inevitably occur in actual operation due to the structural defects of the cable accessories themselves, inadequate manufacturing and installation processes, and the complexity of the operating environment.

Method used

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  • Cross-linked polyethylene cable detecting device

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Experimental program
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Embodiment Construction

[0008] Specific embodiments of the invention will be described in detail below in conjunction with the accompanying drawings.

[0009] like figure 1 As shown, the cross-linked polyethylene cable detection device includes an acoustic emission sensor, a gating circuit, a trigger signal conditioning circuit, an analog signal processing circuit, a data acquisition card and a host computer, the acoustic emission sensor is located at the cable terminal, and the acoustic emission The sensor, the gate circuit, the trigger signal conditioning circuit, the analog signal processing circuit, the data acquisition card and the host computer are connected in sequence, the acoustic emission sensor is a PVDF piezoelectric film patch, the gate circuit is SCR2N4200, and the trigger signal The conditioning circuit is a constant current compensation circuit of AD592, and the data acquisition card is a NET2801 single-channel Ethernet data acquisition card.

[0010] It also includes a power supply ...

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Abstract

The invention provides a cross-linked polyethylene cable detecting device including a sound emitting sensor, a gating circuit, a trigger signal modulating circuit, an analog signal processing circuit, a data collecting card and an upper computer. The sound emitting sensor is disposed on a cable terminal and is a PVDF piezoelectric film paster. The specification of the gating circuit is SCR2N4200. The trigger signal modulating circuit is an AD592 constant current compensation circuit. The data collecting card is an NET2801 single-channel Ethernet data collecting card. According to the invention, an ultrasonic wave method is adopted for performing local discharge point detection on cable accessories. Novel high polymer materials are adopted for applying to a paster type ultrasonic transducing element, so that a shortcoming of low flexibility of traditional piezoelectric ceramic material is overcome. A high speed collection module and a network data transmission method are adopted for suiting requirements for installation, arrangement and data transmission of an electric industrial field. The device provided by the invention can realize positioning and judgment of inner discharge points appearing due to insulation defects.

Description

technical field [0001] The invention belongs to the auxiliary field of electric equipment, and in particular relates to a cross-linked polyethylene cable detection device. Background technique [0002] XLPE has been widely used in transmission lines and distribution networks of various voltage levels in power systems. However, with the increasing number of cable accessories year by year, due to the structural defects of the cable accessories themselves, inadequate manufacturing and installation processes, and the complexity of the operating environment, insulation failures will inevitably occur in actual operation. With the increase of operating voltage of cable accessories and the cumulative effect of long-term conformity, various insulation defects are likely to cause partial discharge, and most of the cable faults caused by them occur in cable accessories and terminals. Contents of the invention [0003] To solve the above technical problems, the invention provides a c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12G01R31/08
Inventor 杨国芝
Owner TIANJIN HUASHENGYUAN MACHINERY MFG CO LTD
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