Cable comprehensive intelligent grounding box

Abstract

The invention relates to a cable comprehensive intelligent grounding box. The cable comprehensive intelligent grounding box comprises a box body, wherein the box body is divided into a first placementcavity and a second placement cavity, an online monitoring assembly is arranged on a vertical partition plate, and a host is arranged inside the second placement cavity. The cable comprehensive intelligent grounding box has the advantages that the online monitoring assembly inside the box body monitors a power cable in real time, and monitoring data of the online monitoring assembly is transmitted to a monitoring PC through a communication module by the host so that a manager can obtain the operation state of the power cable in real time, and the normal, stable and safe operation of the powercable is ensured, and when the data monitored by the online monitoring assembly does not accord with data set by a processor, the processor can send position positioning information and alarm information to the monitoring PC through a positioning module and an alarm, so that it is ensured that a maintainer can maintain the power cable in time, and faults of the power cable can be avoided in time.

Description

technical field [0001] The invention relates to a comprehensive intelligent grounding box for cables. Background technique [0002] The metal sheath of 110kV and above single-core cables generally adopts the operation mode of cross-connected double-ended grounding or single-ended direct grounding. Under normal circumstances, the metal sheath has only tens of volts of induced voltage to the ground, and the induction voltage of several amps to tens of amps. Current and power cables are mostly cables with solid insulation, and there are many reasons for cable deterioration, such as electrical deterioration, thermal deterioration, chemical deterioration, mechanical deterioration, theft, etc. For high-voltage cables (110kV and above), the shielding layer can only be Single-point grounding, if the cable sheath is grounded at multiple points due to chemical, mechanical or even rodent damage, the metal sheath-to-ground circulation will rise to a very dangerous value. Once the cable...

AI Technical Summary

Problems solved by technology

When the floating voltage on the cable metal sheath will rise above the allowable value of the power frequency withstand voltage of the cable outer sheath, in this case it will cause the outer sheath to break down or the sheath protector to burn out, and more seriously will cause Potential safety hazards such as cable main insulation breakdown

However, cable operation management generally adopts the method of manual periodic inspection, which is difficult to prevent the occurrence of the above incidents

Images