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SF6 breaker moisture content online monitoring system based on wireless communication

A technology of micro water content and monitoring system, applied in circuit breaker testing, instruments, measuring electricity, etc., can solve the problems of reducing the mechanical performance of switches, equipment insulation hazards, corroding equipment, etc., to avoid insufficient maintenance, avoid excessive maintenance, The effect of improving accuracy and reliability

Pending Publication Date: 2017-08-29
ELECTRIC POWER SCI RES INST OF GUIZHOU POWER GRID CO LTD
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Problems solved by technology

In actual use, when the SF6 micro-water content exceeds the standard, it will cause the chemical reaction of SF6 gas decomposition products to produce toxic compounds, corrode the equipment, reduce the mechanical properties of the switch, and then affect the breaking performance of the switch, causing damage to the insulation of the equipment.

Method used

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  • SF6 breaker moisture content online monitoring system based on wireless communication
  • SF6 breaker moisture content online monitoring system based on wireless communication
  • SF6 breaker moisture content online monitoring system based on wireless communication

Examples

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Embodiment Construction

[0019] Such as figure 1 Shown is the device connection diagram of the circuit breaker temperature online monitoring system. The invention provides an online measurement system for the micro-water content in an SF6 circuit breaker, which includes a measurement module, a CPU, an alarm module, an LCD display module and a wireless communication module.

[0020] The connection method is: the temperature, pressure, and relative humidity of the SF6 gas in the gas cavity are collected through the measurement module, and transmitted to the single-chip microcomputer set near the circuit breaker through the analog-to-digital conversion device, and the humidity is controlled by the preset processing program in the single-chip microcomputer. After calculating the absolute humidity value considering the influence of pressure and temperature, the single-chip microcomputer judges whether the gas pressure value and the micro water content of the SF6 circuit breaker are exceeded, and the result inf...

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Abstract

The present invention relates to an SF6 breaker moisture content online monitoring system based on wireless communication. The system comprises a temperature sensor, a humidity sensor, a pressure sensor, an analog-digital converter, a single-chip microcomputer, a wireless communication interface, a wireless communication unit, an alarm module, an LCD display module and the like. Through adoption of a high-precision sensor and the wireless communication technology, the SF6 breaker moisture content online monitoring system based on wireless communication realizes real-time online monitoring of the SF6 gas state in a transformer station, monitors the volume and the variation trend of the moisture content in real time, prevents from the insulation accidents of the SF6 breaker and realizes SF6 breaker moisture exceeding fault state maintenance.

Description

Technical field [0001] The invention relates to an online monitoring system for power equipment, in particular to an online monitoring system for the micro-water content of an SF6 circuit breaker based on wireless communication. Background technique [0002] Because SF6 gas has excellent insulation and arc extinguishing performance, SF6 circuit breakers are widely used in high-voltage electrical occasions. The water content of SF6 circuit breaker refers to the volume content of water in SF6 gas under certain temperature and pressure conditions. In actual use, when the SF6 micro-water content exceeds the standard, it will cause the SF6 gas decomposition product to produce toxic compounds, corrode the equipment, reduce the mechanical performance of the switch, and then affect the breaking performance of the switch, and harm the insulation of the equipment. Therefore, the micro-water content of SF6 gas in the high-voltage circuit breaker must be measured and controlled. The SF6 ci...

Claims

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Application Information

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IPC IPC(8): G01R31/327G01N33/00
CPCG01N33/00G01R31/3272
Inventor 赵立进黄良吕黔苏杨涛吴建蓉彭辉沈泉宇徐俊杰韦玮
Owner ELECTRIC POWER SCI RES INST OF GUIZHOU POWER GRID CO LTD
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