Insulation detecting system for power transmission cables

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...

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 problems, cable failures are inevitable. Cable insulation testing It is the most basic technology of cable detection. Accurate and effective cable insulation detection is a necessary condition for timely discovery of cable fault points and ensuring more and better power supply for cable lines; therefore, it provides a wide range of applications, accurate fault detection, and reliable operation. Low power consumption, long service life, convenient debugging, accurate fault location, and easy-to-operate transmission cable insulation detection system are very necessary

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