Intelligent on-line monitoring system for cable line faults

Abstract

The invention discloses an intelligent on-line monitoring system for cable line faults. The intelligent on-line monitoring system comprises a plurality of fault detectors, a centralized processor, a communication exchanger and a monitoring system server. A 2.4 G wireless communication module, a single chip microcomputer control unit and a current sensor are arranged in each fault detector. The centralized processor is connected with the monitoring system server through the communication exchanger, receives the sampling data of an ABC3 phase fault detector to conduct initial fault information calculation, and transmits the processed and analyzed data to the communication exchanger. The communication exchanger decodes the fault information and then uploads the fault information to the monitoring system server. The intelligent on-line monitoring system for cable line faults can comprehensively monitor the fault conditions such as short circuit, grounding, overload, line breaking, power failure, three-phase imbanlance and burglary and cutting on a line, and fault judgments are quickly and accurately made.

Description

technical field [0001] The invention relates to an intelligent on-line monitoring system for cable line faults, which belongs to the technical field of line detection. Background technique [0002] In power distribution lines, due to reasons such as long lines, long branches, and complex structures, when faults such as short circuit, disconnection, power outage, three-phase imbalance, and overload occur, the fault point and cause of the fault cannot be detected in time. Then prolong the maintenance time, cause a large-scale power outage, and cause greater economic losses. At present, although fault detectors are also installed in cable lines, there are still several disadvantages: [0003] 1. The fault detector adopts differential and integral analog circuits, which are not sensitive to small current signals; [0004] 2. There is single-phase communication between the fault detector and the centralized processor. The monitoring center cannot remotely modify the detection p...

AI Technical Summary

Problems solved by technology

[0003] 1. The fault detector adopts differential and integral analog circuits, which are not sensitive to small current signals;

[0004] 2. There is single-phase communication between the fault detector and the centralized processor. The monitoring center cannot remotely modify the detection parameters of the fault detector, and cannot eliminate the malfunction caused by the inrush current of the reclosing non-fault branch and the feedback power transmission. As long as there is a malfunction ( Refuse to move) then move forever

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