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为使水电站非电量在线监测系统运行正常可靠,监测元件的选用十分重要.监测元件按其输出信息的形式可分为开关量,模拟量或脉冲量三种。为完成预定的监测功能,常将传感元件和相关的二次仪表组为一体构成监测装置.因此该文的内容也包括了用于监测的二次仪表。对于监测元件的选用,主要从三个方面分述,即:(1)功能要求,包括量程、精度、显示、报警、输出等方面;(2)性能要求,包括可靠性、稳定性、安全保证、频响等;(3)环境条件,包括地理气候条件、介质条件、工作电流、电磁干扰、机械振动等方面。在选用条件方面既注意通用条件又特别强调了水电站特定的条件。分析掌握本电站的特定条件,是十分重要的。
In order to make the non-electricity on-line monitoring system of hydropower station operate normally and reliably, the selection of monitoring elements is very important.Monitoring elements can be divided into switch, analog or pulse according to the form of output information. In order to complete the scheduled monitoring function, the sensing element and the related secondary instrument cluster are often integrated into the monitoring device, so the content of the article also includes the secondary instrument for monitoring. For the selection of monitoring components, mainly from three aspects described, namely: (1) functional requirements, including range, accuracy, display, alarm, output and so on; (2) performance requirements, including reliability, stability, safety assurance , Frequency response, etc .; (3) environmental conditions, including geographical and climatic conditions, media conditions, working current, electromagnetic interference, mechanical vibration and so on. In terms of the selection of conditions not only pay attention to the general conditions and special emphasis on the specific conditions of the hydropower station. It is very important to analyze and grasp the specific conditions of this power plant.