Power transmission line monitoring system of iron-steel combined enterprise

Abstract

The invention relates to the field of power transmission line on-line monitoring, in particular to a power transmission line monitoring system of a combined iron and steel enterprise. The system comprises an insulator corona discharge monitoring module arranged on a transmission line between two transformer substations and used for collecting corona traveling waves generated on the transmission line; an external damage prevention monitoring module which is arranged around the transmission line and used for collecting border crossing behavior information and / or invasion behavior images of the surrounding environment; a partial discharge monitoring module which is arranged at the grounding part of the cable joint and is used for acquiring a partial discharge pulse current signal of the cablejoint; and a main control module which is used for determining the position of a pollution flashover fault point based on the corona traveling wave, also used for sending an alarm signal to the position where the border-crossing behavior and / or the intrusion behavior occurs based on the border-crossing behavior information and / or the intrusion behavior image and used for determining the insulation degradation degree of the cable joint based on the local pulse current signal so as to effectively monitor various potential safety hazards on the power transmission line of the iron and steel enterprise.

Description

technical field [0001] The invention relates to the field of on-line monitoring of power transmission lines, in particular to a power transmission line monitoring system of an iron and steel complex. Background technique [0002] Due to the serious pollution of active lime and iron metal dust in the factory area of ​​iron and steel enterprises, and the strong adhesion on the porcelain bottle, it cannot be washed away by rainwater, and the dirt on the surface of the insulator is easy to accumulate and deposit, which leads to pollution flashover accidents, especially It is the tower near the sour fume boiler, which is more prone to pollution flashover trip accidents. [0003] In addition, due to the frequent transfer of waste and soil in the iron and steel enterprise factory area, construction machinery such as dump trucks, excavators, sedimentation tank excavators, crawler cranes, and wheeled cranes may accidentally touch the wires when passing through high-voltage transmissi...

AI Technical Summary

Problems solved by technology

[0002] Due to the serious pollution of active lime and iron metal dust in the factory area of ​​iron and steel enterprises, and the strong adhesion on the porcelain bottle, it cannot be washed away by rainwater, and the pollution on the surface of the insulator is easy to accumulate and deposit, which leads to pollution flashover accidents, especially It is a tower near the sour fume boiler, which is more prone to pollution flashover trip accidents

[0003] In addition, due to the frequent transfer of waste and soil in the iron and steel enterprise factory area, construction machinery such as dump trucks, excavators, sedimentation tank excavators, crawler cranes, and wheeled cranes may accidentally touch the wires when passing through high-voltage transmission lines. Bring hidden dangers to the normal production in the factory

[0004] Moreover, due to various factors such as electricity, heat, machinery, and the environment, the transmission line is prone to failure, especially in the cable joint, where the power is overloaded, the ambient temperature is too high, aging or the release resistance is too large to generate heat. Cause the temperature to be too high, resulting in deterioration of the insulation at the joints, and even breakdown and accidents

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