On-line monitoring device for temperature of grounding wires of high-voltage single-core cable sheaths, and control method

Abstract

The invention provides an on-line monitoring device for temperatures of grounding wires of high-voltage single-core cable sheaths, and a control method. The device comprises an A-phase temperature sensor, a B-phase temperature sensor, a C-phase temperature sensor, a temperature data acquisition device, a GPRS (General Packet Radio Service) data transmission module and monitoring equipment, wherein the A-phase temperature sensor, the B-phase temperature sensor and the C-phase temperature sensor are mounted on the grounding wires of the A-phase single-core cable sheath, the B-phase single-core cable sheath and the C-phase single-core cable sheath respectively; three input ends of the temperature data acquisition device are connected with the A-phase temperature sensor, the B-phase temperature sensor and the C-phase temperature sensor respectively; an output end of the temperature data acquisition device is connected with the GPRS data transmission module; the GPRS data transmission module is wirelessly connected with the monitoring equipment; and the monitoring equipment comprises a monitoring computer and a mobile phone terminal which are arranged in a power grid monitoring center. The on-line monitoring device for the temperatures of the grounding wires of the high-voltage single-core cable sheaths, and the control method have the following advantages of safety, reliability, high field applicability, convenience and rapidity.

Description

technical field [0001] The invention belongs to the technical field of power grid detection, and in particular relates to an on-line monitoring device and a control method for the temperature of a ground wire of a sheath of a high-voltage single-core cable. Background technique [0002] At present, the automation construction and transformation of the power industry, power supply and power consumption enterprises are constantly developing and perfecting. In order to improve labor productivity and increase economic benefits, it is very necessary for equipment operation, especially high temperature monitoring and alarming of power supply equipment. In some special occasions, excessive temperature may cause accidents such as equipment damage, combustion, and even explosion. For example, for high-voltage electrical equipment, due to limited fault testing methods, especially in switch boxes and closed busbars, the temperature exceeding the limit point is more difficult to be found...

AI Technical Summary

Problems solved by technology

In some special occasions, excessive temperature may cause accidents such as equipment damage, combustion, or even explosion. For example: high-voltage electrical equipment, due to limited fault testing methods, especially in switch boxes and closed busbars, the temperature exceeding the limit point is more difficult to be found.

With the prolongation of the temperature rise time, the degree of oxidation will increase due to heat generation at the place where the temperature exceeds the limit, which may cause major accidents such as burning of busbars, contacts, contacts, disks, and power outages.

[0003] At present, optical fiber sensing and infrared spectrum analysis are mainly used for temperature measurement of high-voltage charged bodies, but these will bring many hidden dangers and inconvenience to the installation and safe operation of high-voltage equipment

Example: Increase the fiber optic wiring between the gaps between the busbars, the accuracy of infrared ray online scanning, etc. Some defects are unavoidable

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