一种适用于柔直换流站阀厅避雷器在线监测表计的研制

Development of an Online Monitoring Table of DC Arrester in the Valve Hall of VSC-HVDC Station

厦门柔直换流站阀厅避雷器在线监测表计在正常运行时,出现了监测数据随着系统功率负荷的变化而变化、监测数据不能很好地反映避雷器运行工作状态等问题。文章结合厦门柔直换流站阀厅避雷器的运行状况,研制一种适用于柔直换流站阀厅避雷器在线监测的表计。实现对阀厅避雷器泄露电流的有效测量,使监测器不受系统谐波和现场空间谐波的影响,具有抗干扰能力强、数据监测灵敏度强、显示稳定等特点,能够正确反映柔直系统避雷器运行时的真实状态,保证设备运行的可靠性。

When the on-line monitor meter of arrester in valve hall of Xiamen VSC-HVDC Station is in normal operation,the monitor data changes with the change of system power load,and the monitor data cannot well reflect the working state of arrester.In this paper,a meter for on-line monitoring of arrester in valve hall of Xiamen VSC-HVDC Station is developed based on the operat-ing conditions of arrester in valve hall of Xiamen VSC-HVDC Station.It can effectively measure the leakage current of the arrester,so that the monitor is not affected by the system harmonics and the field space harmonics.It has the characteristics of strong anti-interference ability,strong data monitoring sensitivity and stable display,and can correctly reflect the real state of the lightning ar-rester in the flexible and straight system,and ensure the reliability of the equipment operation.