Insulation detecting system for power transmission cables

A detection system and transmission cable technology, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problems of wasting manpower and material resources, and achieve the effects of convenient maintenance, convenient debugging, and reduced fault range.

Inactive Publication Date: 2016-08-17
CHANGGE ELECTRICAL IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Power transmission cables have the advantages of reliable operation and maintenance workload. Most power cables are buried underground. Therefore, when a cable fails, it often takes a long time, which not only wastes a lot of manpower and material resources, but also causes incalculable economic and Social impact, with the continuous advancement of urban power grid transformation, more and more power cables will be used in the power system. Due to the inherent shortcomings of power cables, such as complex cable joint technology and construction quality pro

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  • Insulation detecting system for power transmission cables
  • Insulation detecting system for power transmission cables

Examples

Experimental program
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Effect test

Embodiment 1

[0015] Such as figure 1 and figure 2 As shown, a transmission cable insulation detection system includes a power cable, the power cable is connected with a GIS terminal, the grounding line of the power cable is provided with a current sensor, and the current sensor is connected with an amplifier. The amplifier is connected with a signal filter, and the signal filter is connected with an A / D converter, and the A / D converter is connected with a computer, and the computer is connected with a data collection device, and the data collection The collector is connected with an ambient temperature collector and a resistance information collector, the ambient temperature collector is connected with a temperature sensor, the resistance information collector is connected with an insulation resistance tester, and the insulation resistance tester is connected with a GPS The positioning device connects the power cable to the insulation resistance tester.

[0016] The power cable of the p...

Embodiment 2

[0018] Such as figure 1 and figure 2 As shown, a transmission cable insulation detection system includes a power cable, the power cable is connected with a GIS terminal, the grounding line of the power cable is provided with a current sensor, and the current sensor is connected with an amplifier. The amplifier is connected with a signal filter, and the signal filter is connected with an A / D converter, and the A / D converter is connected with a computer, and the computer is connected with a data collection device, and the data collection The collector is connected with an ambient temperature collector and a resistance information collector, the ambient temperature collector is connected with a temperature sensor, the resistance information collector is connected with an insulation resistance tester, and the insulation resistance tester is connected with a GPS The positioning device connects the power cable to the insulation resistance tester.

[0019] The centralized data col...

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PUM

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Abstract

The invention relates to an insulation detecting system for power transmission cables. The insulation detecting system comprises an electric power cable. A GIS (geographic information system) terminal is connected with the electric power cable, a grounding circuit of the electric power cable is provided with a current sensor, an amplifier is connected with the current sensor, a signal filter is connected with the amplifier, an A/D (analog/digital) converter is connected with the signal filter, a computer is connected with the A/D converter, a data concentration collector is connected with the computer, an environmental temperature collector and a resistance information collector are connected with the data concentration collector, a temperature sensor is connected with the environmental temperature collector, insulation resistance testers are connected with the resistance information collector, GPS (global positioning system) positioning devices are connected with the insulation resistance testers, and the electric power cable is connected with the insulation resistance testers. The insulation detecting system has the advantages of wide application range, accuracy in fault detecting and fault positioning, reliability in running, low power consumption, long service life and convenience in debugging and operation.

Description

technical field [0001] The invention belongs to the field of detection and maintenance of power supply equipment, in particular to a power transmission cable insulation detection system. Background technique [0002] Power transmission cables have the advantages of reliable operation and maintenance workload. Most power cables are buried underground. Therefore, when a cable fails, it often takes a long time, which not only wastes a lot of manpower and material resources, but also causes incalculable economic and economic losses. Social impact, with the continuous advancement of urban power grid transformation, more and more power cables will be used in power systems. Due to the inherent shortcomings of power cables, such as complex cable joint technology and construction quality problems, cable faults are inevitable. Cable insulation testing It is the most basic technology for cable detection. Accurate and effective cable insulation detection is a necessary condition for tim...

Claims

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Application Information

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IPC IPC(8): G01R31/12G01R31/08
CPCG01R31/083G01R31/1272
Inventor 王镇楠王志伟
Owner CHANGGE ELECTRICAL IND
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