On-line pressure monitoring system with trend alarming function for SF6 gas

Abstract

The invention discloses an on-line pressure monitoring system with a trend alarming function for SF6 gas. The system is of a distributing structure and comprises an interlayer, a station layer and a monitoring center layer, the interlayer is in signal connection with the station layer through first communication equipment, and the station layer is in signal connection with the monitoring center layer through second communication equipment; the interlayer comprises a data collector and an SF6 pressure sensor and is used for collecting pressure data of an SF6 gas chamber, and the data collectoris used for converting the pressure data into a digital signal and uploading the digital signal; the station layer comprises an instation monitoring host and is used for acquiring the data uploaded bythe data collector and uploading the acquired data to the monitoring center layer; the monitoring center layer comprises a monitoring center host and is used for acquiring the data uploaded by the station layer, and real-time data of pressure of SF6 gas is checked at any terminal of the monitoring center layer. The system can accurately monitor the pressure data of the SF6 gas chamber online in real time and has functions of trend alarming, data statistic analysis, statement management and the like.

Description

technical field [0001] The invention relates to a pressure monitoring system, in particular to an SF6 gas online pressure monitoring system with a trend alarm function. Background technique [0002] SF6 gas has been widely used in power systems due to its excellent insulation and arc extinguishing properties, and has almost become the only insulation and arc extinguishing medium used in medium-voltage, high-voltage and ultra-high voltage switches. Therefore, the accuracy and timeliness of monitoring the pressure data of the SF6 gas chamber directly affect the safe operation of the equipment. [0003] At present, most of the SF6 gas density relays in GIS substations do not have remote transmission function, and the SF6 gas pressure in the GIS gas chamber is mainly monitored by regular transcriptions by operation and maintenance personnel. This pattern creates problems as follows: [0004] 1) The faults caused by regular transcription are not found in time; [0005] 2) It i...

AI Technical Summary

Problems solved by technology

[0004] 1) The faults caused by regular transcription are not found in time;

[0005] 2) It is impossible to obtain the trend of the pressure change of the air chamber, so that hidden troubles can be found at an early stage, and timely countermeasures can be taken when the trouble expands;

[0007] 4) Manual transcription can no longer meet the needs of work

However, the utility model can only be applied to a single substation SF 6 The gas is monitored online, and there is no trend alarm function

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