High-voltage cable sheath-breaking-prevention monitoring early warning method and high-voltage cable sheath-breaking-prevention monitoring early warning system

Abstract

The invention relates to a high-voltage cable sheath-breaking-prevention monitoring early warning method and a high-voltage cable sheath-breaking-prevention monitoring early warning system. The high-voltage cable sheath-breaking-prevention monitoring early warning method comprises the following steps of obtaining a sheath breaking state signal of a high-voltage cable; obtaining a state parameter according to the sheath breaking state signal; detecting whether the state parameter is matched with a preset state parameter or not; and when the state parameter is matched with the preset parameter,sending an early warning signal to the monitoring system. The corresponding state parameter is obtained through the sheath breaking state signal, i.e., the features of the sheath breaking state signalare converted into a corresponding state value; the obtained state parameter is matched with the state parameter preset in the system; when the state parameter is matched with the preset state parameter, the result shows that the sheath breaking state signal is generated during the construction by large-size machinery; meanwhile, the result shows that the large-size machinery can cause sheath breaking hidden danger on the high-voltage cable; at the moment, an early warning signal is sent to the monitoring system; and the located environment of the high-voltage cable can be conveniently monitored, so that a corresponding handling scheme can be conveniently and timely made.

Description

technical field [0001] The invention relates to the technical field of cable monitoring, in particular to a monitoring and early warning method for preventing external breakage of high-voltage cables and a monitoring and early warning system. Background technique [0002] With the improvement of people's living standards, the power distribution capacity of the power grid is increasing rapidly, and high-voltage transmission lines are required for high-power power transmission. One is overhead transmission lines, which use insulators and air-insulated power lines. Ground wires, insulator strings, pole towers, grounding devices, etc., and the other is high-voltage cables, which usually have underground laying forms such as tunnel laying, direct burial laying, cable trench laying, and pipe laying. For high-voltage cable lines, daily and special inspections can be carried out to avoid damage or damage to the high-voltage cable body caused by large-scale drilling, excavation, and ...

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Problems solved by technology

[0003] However, this inspection method is regular, that is, inspectors need to complete regular inspections and defect elimination tasks every month. It is difficult to monitor construction hidden dangers at fixed points around the clock, and it is also difficult to report hidden dangers of high-voltage cable breakage in a timely manner, resulting in blind spots in the inspection cycle. Moreover, it is not uncommon for high-voltage cables to be damaged due to brutal construction. For some construction sites, simple video monitoring devices are installed to improve the real-time supervision of the construction site to a certain extent, but this method can only achieve limited monitoring of fixed construction sites. , and the power supply method of solar energy + battery is adopted in the field, which is greatly affected by weather factors, and in most cases, it is necessary to manually find out the hidden danger information for early warning, which has certain limitations, making the protection of high-voltage cables Increased difficulty in real-time monitoring

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