Supersonic online detection system of 1000kV GIS

A detection system, ultrasonic technology, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problems of slow response, inaccurate positioning of detection means, etc., and achieve the effect of reducing impact, low energy consumption, and good application effect

Inactive Publication Date: 2016-06-29
STATE GRID CORP OF CHINA +1
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Problems solved by technology

[0007] In view of this, the purpose of the present invention is to provide a 1000kVGIS ultrasonic online detection system for the deficiencies of th

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  • Supersonic online detection system of 1000kV GIS
  • Supersonic online detection system of 1000kV GIS
  • Supersonic online detection system of 1000kV GIS

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[0027] In order to realize the 1000kV GIS ultrasonic online detection system of the present invention, three technical problems need to be solved. The first technical problem to be solved by the present invention is the principle of the ultrasonic method to detect the internal partial discharge of the GIS, including discharge amount collection, signal amplification, filtering, processing, transmission and display unit; the second technical problem to be solved by the present invention is how to preamplify the discharge signal collected by the low-frequency resonant NU40A18TR sensor to obtain a larger gain; the third technical problem to be solved by the present invention The technical problem is the multi-channel distributed high-speed data acquisition and processing system based on DSP and CPLD.

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] like Figure 1 to Figure 9 As shown, to solve the...

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Abstract

The invention discloses a supersonic online detection system of a 1000kV GIS, and relates to the field of electronic technology. Supersonic probes are mounted on a casing or basin-type insulator of the 1000kV GIS, and collect internal discharge signals of the GIS in real time, the signals are transmitted to an optical relay station via fibers and converted into electric signals, the electric signals are amplified, processed and stored, and then analyzed by a host computer, and display, printing and teletransmission functions are provided. The supersonic online detection system of the 1000kV GIS can be applied to the field in detecting partial discharge defect of the common 1000kV GIS, the problems as inaccurate positioning and slow response of a traditional detection method are effectively solved, and the system of the invention is worthy of popularization and use widely.

Description

technical field [0001] The invention relates to the technical field of a partial discharge detection method for UHV equipment, in particular to a 1000kV GIS ultrasonic on-line detection system. Background technique [0002] Partial discharge is a discharge phenomenon that occurs in a local area of ​​a metal-enclosed gas-insulated combined electrical appliance (GIS). If partial discharge exists for a long time, it will cause insulation damage, resulting in a penetrating breakdown inside the GIS. At present, the GIS partial discharge ultrasonic detection device widely used in the power grid can realize the detection and accurate positioning of internal discharge during GIS operation, and plays an important role in timely discovering hidden dangers of equipment. [0003] However, there is currently a lack of necessary technical means to realize a real-time monitoring system for the partial discharge of GIS equipment, which is very unfavorable to the evaluation of the actual ope...

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Application Information

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IPC IPC(8): G01R31/12
CPCG01R31/1254
Inventor 汤会增郭凯黄克选毛建坤郭果韩丽明姚宇金轲姚东许冰闰兴龙范明森李茹勤张高峰岳雷刚
Owner STATE GRID CORP OF CHINA
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