Power cable fire hazard on-line monitoring system

Abstract

The invention provides a power cable fire hazard on-line monitoring system, and belongs to the field of the electrical technology and equipment. The power cable fire hazard on-line monitoring system is designed to be of a dispersed-measuring and concentrated-monitoring layered distributed structure according to actual requirements of power cable operation, and comprises a host, a bus interface, sub stations and temperature sensors. The temperature sensors accurately measure the temperature of a cable connector and all points of a cable, all the sub stations collect data transmitted by the temperature sensors in real time, after simple processing, the number of the sensors and corresponding data are transmitted to the host through an interface circuit, and the host manages all the sub stations and manages and displays on-site data through a good interface under the Windows environment. The power cable fire hazard on-line monitoring system can give out an alarm timely when the temperature is out of limit or the temperature rising speed is beyond a set alarming value according to the real-time monitored temperature changing of the power cable, guarantees safe operation of an electric system, and is novel in design, reasonable in structure, reliable in operation, and convenient to maintain.

Description

technical field [0001] An on-line fire monitoring system for power cables belongs to the field of electrical technology and equipment. Background technique [0002] Power cables in power plants and substations operate in high-voltage and high-current environments for a long time. The cable insulation is easily damaged, the insulation performance is reduced, and there is a breakdown and leakage. The oxidation of the joints leads to excessive contact resistance, overheating, and fire. Burnout, resulting in forced shutdown, unable to resume production in a short period of time, resulting in major economic losses. The laying distance of power cables is long and the direction is complicated. However, there are many problems in the method of regular inspections, intervals of inspections, and accuracy of inspections by operating personnel. At present, most of the power cable accidents running in the country are caused by fires in cables and their joints. If the temperature change...

AI Technical Summary

Problems solved by technology

[0002] Power cables in power plants and substations operate in high-voltage and high-current environments for a long time. The cable insulation is easily damaged, the insulation performance is reduced, and there is a breakdown and leakage. The oxidation of the joints leads to excessive contact resistance, overheating, and fire. Burnout, resulting in forced shutdown, unable to resume production in a short period of time, resulting in major economic losses

The laying distance of power cables is long and the direction is complicated. However, there are many problems in the method of regular inspections by operators, the interval of inspections, and the accuracy of inspections.

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