向家坝电站调速器主配压阀位移传感器技术改造

Technical Modification of Displacement Sensor for Main Distribution Valve of Governor in Xiangjiaba Hydropower Plant

针对向家坝电站调速器运行过程中主配压阀位移传感器测值偏移及抖动导致调速器调节品质下降的问题,分析了主配压阀位移传感器测值不准的形成原因,并提出了相应的技术改造措施。改造后传感器测值稳定准确,未出现偏移抖动情况,极大的提高了调速器运行稳定性。

Considering the problem that the offset and jitter of the displacement sensor for the main distribution valve of governor in Xiangjiaba Hydropower Plant caused the governor's adjustment quality to drop,the reasons of the inaccurate measurement are analyzed,and the corresponding technical modifications are put forward.After the modification,the measured value of the sensor is stable and accurate,and there is no offset and jitter,which greatly improves the stability of the governor.