Gas leakage monitor and monitoring system for medium and high voltage electrical equipment

Abstract

The invention discloses a gas leak monitor. The gas leakage monitor for medium and high voltage electrical equipment comprises an intelligent microprocessor, a pressure sensor, a temperature sensor, acommunication module and a memory, wherein the pressure sensor is in communication with a gas path of a gas density monitor; the intelligent microprocessor is respectively connected to the temperature sensor, the pressure sensor and the communication module; the intelligent microprocessor acquires a pressure signal through the pressure sensor according to a set sampling frequency, acquires a temperature signal through the temperature sensor, and obtains a corresponding density value P20 through arithmetic processing of the intelligent microprocessor; the intelligent microprocessor performs in-depth calculation processing on the obtained corresponding density value P20 to obtain an accurate density value P20, and notifies information for the leaked gas of the monitored medium and high voltage electrical equipment. The gas leak monitor provided by the invention can make accurate on-line monitoring and fault diagnosis of gas-insulated electrical equipment, and can more timely find out when gas leakage occurs in gas-insulated electrical equipment.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a gas leakage monitor, method and system for electrical equipment applied to high-voltage and medium-voltage electrical equipment. Background technique [0002] Currently, SF 6 (Sulfur hexafluoride) electrical equipment has been widely used in the power sector, industrial and mining enterprises, and promoted the rapid development of the power industry. In recent years, with the rapid economic development, the capacity of my country's power system has expanded rapidly, and SF 6 The amount of electrical equipment is increasing. SF 6 The role of gas in high-voltage electrical equipment is arc extinguishing and insulation, and SF in high-voltage electrical equipment 6 If the density of the gas decreases and the moisture content exceeds the standard, it will seriously affect the SF 6 Safe operation of high-voltage electrical equipment: 1) SF 6 The reduction of gas densit...

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Problems solved by technology

3) When the temperature drops, too much moisture may form condensation water, which will significantly reduce the insulation strength of the surface of the insulating part, or even flashover, causing serious damage

In addition, if the on-site inspection of the inspectors is not performed in a standardized manner, there are still potential safety hazards

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