Antitheft type multifunctional wireless high-voltage cable sheath grounding current monitoring system

Abstract

The invention relates to a monitoring system, and especially relates to an antitheft type multifunctional wireless high-voltage cable sheath grounding current monitoring system. The system comprises a monitoring system, an acquisition system, a grounding box, a cable anti-cut-theft alarm and current transformers, wherein the acquisition system is respectively connected with a high-voltage cable A phase, a high-voltage cable B phase and a high-voltage cable C phase through the current transformers and the cable anti-cut-theft alarm , the high-voltage cable A phase, the high-voltage cable B phase and the high-voltage cable C phase are respectively connected with the grounding box through the cable anti-cut-theft alarm and the current transformers, the acquisition system is connected with the grounding box through the cable anti-cut-theft alarm, and the acquisition system sends information to the monitoring system through a wireless network. According to the invention, cable main insulation aging or defects, oversheath multipoint grounding faults, cross interconnection connection errors, direct grounding failure, protection grounding short circuits and grounding box thefts can be discovered, network nodes are regularly detected, and link faults are automatically diagnosed.

Description

technical field [0001] The invention relates to a monitoring system, in particular to an anti-theft multifunctional wireless high-voltage cable sheath grounding current monitoring system. Background technique [0002] Compared with ordinary three-core cables, high-voltage single-core power cables have the advantages of high power, high reliability, and low insulation failure rate. With the development of cities, the number of high-voltage single-core cables with a voltage level of 35KV and above needs to be increased urgently, especially in urban power supply systems with large power consumption. Most of these high-voltage cables are installed underground, and these cable lines are very important as part of the transportation circuit, and the safety of the circuit is also very important. The environment of these underground high-voltage circuits is complex, which brings great difficulties to operation and maintenance. At the same time, the defects and hidden dangers of cabl...

AI Technical Summary

Problems solved by technology

The environment of these underground high-voltage circuits is complex, which brings great difficulties to operation and maintenance. At the same time, the defects and hidden dangers of cables also require a lot of manpower and material resources for maintenance.

[0003] When the cable sheath is broken or damaged, the grounding current of the cable sheath will suddenly change and deviate from the current value during normal operation. Therefore, the grounding current of the cable sheath can reflect the state of high-voltage operation. Domestic high-voltage cable sheathing Grounding current monitoring is still very lacking. In many areas, the grounding current is only regularly detected manually, which not only wastes human resources, but also cannot monitor the grounding current value in real time. With the progress of the country, real-time monitoring of the grounding current of the high-voltage cable sheath is very necessary of

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