Cable bushing circular current monitoring system and use method thereof

Abstract

The invention discloses a cable bushing circular current monitoring system which comprises an A phase grounding cable circular current data collector (1), a B phase grounding cable circular current data collector (2), a C phase grounding cable circular current data collector (3), a junction box (4), a collection unit (5), a 220V power supply (6), a principal computer (7), a data converter (8) and a data transmission unit (9) and is characterized in that the A phase grounding cable circular current data collector (1), the B phase grounding cable circular current data collector (2) and the C phase grounding cable circular current data collector (3) are in signal connection with the principal computer (7) through the junction box (4), the collection unit (5), the data transmission unit (9) and the data converter (8). With the cable bushing circular current monitoring system, the insulating condition of the cable bushing can be monitored in real time, failure alarm is timely sent out, and the safe running level of the cable is improved.

Description

technical field [0001] The invention relates to a power grid safety detection device, in particular to a cable sheath circulation monitoring system. Background technique [0002] As we all know, most of the power supply cables in modern cities are placed underground, and cover plates, metal pipes or PVC pipes are generally used as cable protective sleeves. In today's rapidly developing Chinese cities, there are construction sites everywhere, and hook machines and pile drivers may cause damage to the protective sheath of power supply cables buried underground at any time; in addition, the cable sheath is buried underground, and it is impossible for inspectors to monitor in real time by visual inspection. Sheath grounding faults cannot be detected in time, which is the main reason for the increase in the number of cable outages and the long duration of power outages. At present, the method for detecting the insulation condition of the single-core cable metal sheath is mainly ...

AI Technical Summary

Problems solved by technology

In today's rapidly developing Chinese cities, there are construction sites everywhere, and hook machines and pile drivers may cause damage to the protective sheath of power supply cables buried underground at any time; in addition, the cable sheath is buried underground, and it is impossible for inspectors to monitor in real time by visual inspection. Sheath ground faults cannot be detected in time, which is the main reason for the increase in the number of cable outages and the long duration of power outages

At present, the method for detecting the insulation condition of the single-core cable metal sheath is mainly the insulation resistance method in the off-line state. This method is time-consuming and laborious, and the effect is not ideal.

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