落棒时间自动测量方法研究与实现

Study on Automatic Measure Method of Rod Drop Time and Its Implementation

通过对控制棒组件落棒过程、驱动机构勾爪动作和棒位探测器初级线圈响应的分析,提出自动进行落棒波形判断、分析和计算落棒时间的方法,并采用虚拟仪器技术予以实现。采用真实的落棒波形进行验证,表明该设计能够准确捕获落棒波形并自动进行落棒时间的计算。目前相关研究成果已经应用在海南昌江核电厂和福建福清核电厂3、4号机组上。

Based on the analysis of the rod drop process of rod control cluster assemble （RCCA） and the action of control rod drive mechanism gripper and the response of the primary coil of the rod position detector, this paper presents the automatic judgement, the analysis of rod drop wave and the automatic calculation of the rod drop time, and performs the design with the virtual instrument technology. The relevant design is validated by the real rod drop wave, and the test result shows that it can well and truly capture the rod drop wave and automatically calculate the rod drop time. The production has been applied in Hainan Changjiang Nuclear Power Plant and Fujian Fuqing NPP unit 3 and unit 4.