基于HYT271的SF_6微水密度分析系统

An Analysis System of SF_6 Gas Density and Humidity Based on HYT271

为了保障SF_6气体绝缘设备的绝缘特性和灭弧能力,设计了一种基于HYT271的SF_6微水密度分析系统。系统通过温湿度一体传感器HYT271和压力传感器MS5803分别检测出所处SF_6气室中的温度值、相对湿度值和绝对压力值,并通过微控制器对测量数据进行校准和计算,最后采用RS485总线将测量和分析的数据发送给上位机。实验结果表明,系统具有良好的精度,功耗低,实时性强且设计简洁,方便了对高压电气设备中SF_6的分析与监测。

In order to protect the insulation properties and arc extinguishing capability of SF_6 gas insulated equipment,an analysis system of SF_6 gas density and humidity is designed based on an integrated temperature and humidity sensor called HYT271.The values of temperature,relative humidity and absolute pressure in a SF_6 gas cell are measured by an integrated temperature and humidity sensor HYT271 and a pressure sensor MS5803.And the software calibration and mathematical calculation of the measurement data are carried out by the micro controller.Finally,the RS485 bus will be used to send the measurement and analysis data to the host computer.According to the test of some excellent characteristics of high accuracy,low current consumption,real time and simple design are demonstrated.It is convenient to analyze and monitor SF_6 gas in high voltage electrical equipment.