Intelligent multifunctional cable line fault online monitoring system

Abstract

The invention discloses an intelligent multifunctional cable line fault online monitoring system which comprises multiple fault detectors, a centralized processor, a communication interchanger and a monitoring system server. 2.4 G wireless communication modules, single-chip microcomputer control units, current sensors and lamplight alarm modules are arranged in the fault detectors. The centralized processor is connected with the monitoring system server through the communication interchanger, receives sampling data of the fault detector A, the fault detector B and the fault detector C, conducts preliminary fault information calculation and sends the processed and analyzed data to the communication interchanger, and the communication interchanger decodes fault information and uploads the decoded fault information to the monitoring system server. According to the intelligent multifunctional cable line fault online monitoring system, short-circuit, grounding, overload, broken-line, power-off, three-phase unbalance and stealing fault conditions and the like on a line can be comprehensively monitored and fault judgments are made rapidly and accurately.

Description

technical field [0001] The invention relates to a multifunctional intelligent on-line fault monitoring system for cable lines, 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 ...

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;

[0005] 3. The fault detector can only collect and send current information, but cannot send out an alarm signal

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