Multifunctional gas density monitor and monitoring system

Abstract

The invention relates to a gas density monitor. A multifunctional gas density relay comprises an intelligent microprocessor, a pressure sensor, a temperature sensor, a communication module and a memory. The pressure sensor is communicated with a gas circuit of the gas density monitor. The intelligent microprocessor is connected with the temperature sensor, the pressure sensor and the communicationmodule. The intelligent microprocessor collects a pressure signal through the pressure sensor and collects a temperature signal through the temperature sensor at the set sampling frequency, and a corresponding density value P20 is obtained through processing of the intelligent microprocessor; and the depth of the obtained corresponding density value P20 is calculated to obtain an accurate densityvalue P20. An alarm is raised according to the set alarm density value P20, and when the monitored density value P20 is accurately equivalent to or lower than the alarm density value P20 for alarming, the monitor sends out an alarm signal and sends out alarm notice information; and the alarm notice information is uploaded. Thus, gas insulation equipment can be monitored, a fault can be diagnosedtimely, and the safety of the power grid is ensured.

Description

Technical field [0001] The invention relates to the field of electric power technology, in particular to a gas density monitor and system. Background technique [0002] Currently, SF 6 (Sulfur hexafluoride) electrical equipment has been widely used in the power sector, industrial and mining enterprises, and has 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 dramatically. 6 The amount of electrical equipment is increasing. SF 6 The role of gas in high-voltage electrical equipment is arc extinguishing and insulation. SF in high-voltage electrical equipment 6 If the density of the gas decreases and the content of micro water exceeds the standard, it will seriously affect the safe operation of SF6 high-voltage electrical equipment: SF 6 Reducing the gas density to a certain level will result in the loss of insulation and arc extinguishing performance. At present, a mec...

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Problems solved by technology

However, in the old substations that have been in operation, the remote transmission density relay is used to monitor SF online 6 The gas density value in high-voltage electrical equipment has very high investment costs and many difficulties, mainly for the construction and layout of power lines and communication lines, which have problems of very high costs, great safety hazards, and many difficulties

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