GIL (globalization, internationalization and localization) breakdown discharge positioning detecting system

A technology of positioning detection and breakdown, which is applied in signal transmission system, test circuit, test dielectric strength, etc., to achieve the effect of improving working life and reliability and improving maintenance efficiency

Inactive Publication Date: 2015-06-10
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, there is no unit or research institution in China to conduct research on the detection and location of GIL equipment breakdown discharge

Method used

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  • GIL (globalization, internationalization and localization) breakdown discharge positioning detecting system
  • GIL (globalization, internationalization and localization) breakdown discharge positioning detecting system
  • GIL (globalization, internationalization and localization) breakdown discharge positioning detecting system

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Embodiment Construction

[0016] In a basic embodiment, the present invention provides a GIL breakdown discharge location detection system. The system attaches and installs several vibration detection devices every 10 to 20 meters on the GIL equipment. If the vibration If the output voltage of the detection device is higher than a certain threshold, it is considered that a breakdown discharge has occurred at or near the vibration detection device; when a breakdown discharge occurs, by comparing the vibration signal strength captured from the same GIL device, It can be considered that the location of the vibration signal detection device that collects the strongest signal strength is the closest to the location where the breakdown discharge occurs;

[0017] The vibration detection device includes a sensor, the sensor converts the received vibration signal into a voltage signal output, and performs signal conditioning through the low-pass filter circuit unit, subtraction circuit unit, and amplification ci...

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Abstract

The invention discloses a GIL (globalization, internationalization and localization) breakdown discharge positioning detecting system. A plurality of vibration detecting devices are adhered to GIL equipment at intervals of 10-20 meters, and if the outputting voltage of the vibration detecting devices is higher than a certain threshold value, the locations of the vibration detecting devices or positions close to the vibration detecting devices have breakdown discharge; and when the breakdown discharge is caused, the intensities of vibration signals acquired from the same GIL equipment are compared, and the distance from the location of the vibration detecting device which acquires the signals with the maximum intensity to the position of breakdown discharge is minimum. Advantages of the vibration signals are utilized sufficiently, by an advanced vibration signal analyzing method, the position and the intensity of breakdown discharge of the GIL equipment can be determined accurately, the overhaul efficiency of the GIL equipment is greatly improved, the service life of the GIL equipment is prolonged, the working reliability of the GIL equipment is improved, and the safety and the reliability on stable running of an electric system are guaranteed.

Description

technical field [0001] The invention relates to the field of puncture discharge detection and positioning of a gas-insulated metal-enclosed transmission line (GIL) in a power system, in particular to a GIL puncture discharge positioning detection system. Background technique [0002] Gas-insulated metal-enclosed transmission line (GIL) is the transmission equipment of electric energy in the substation. In recent years, the use of GIL in power stations has gradually increased due to its advantages of large transmission capacity, stable performance, high reliability, and small space occupation. Each line ranges from tens of meters to hundreds of meters or even thousands of meters. The standard requires a short-term power frequency withstand voltage test after the GIL is installed and before it is put into operation to check the installation quality of the product and ensure reliable operation after it is put into operation. For the longer GIL line, once the negligence during ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12G01R31/14G08C17/02
Inventor 王小华廖伟超荣命哲刘定新杨爱军吴翊付钰伟
Owner XI AN JIAOTONG UNIV
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