基于卫星导航测量系统动态实时差分风机塔架位移测量方法

Dynamic Real-time Differential Wind Turbine Tower Displacement Measurement Method Based on Satellite Navigation Measurement System

针对风力发电机组塔架塔顶位移大造成机组运行过程中载荷过大的问题,研究了基于惯量导航测量系统的相位差分定位的测量方法。传统的现场观测测量存在步骤繁杂、无法实时监测的问题,精度较低,提出了构建监测网监测卫星定位系统回传数据,通过位移转换算法实现机组塔架的实时监测。建立了塔杆变形模型,先计算出机组的塔顶的中心经纬度坐标以及航向偏置角,后根据所测信息以及机组标定信息,将其在线实时转化为机组塔顶整体位移、相对于机舱位置前后方向以及左右方向的塔顶位移。通过实验测出塔架位移估算载荷与载荷传感器的弯矩载荷换算位移后进行对比,证明该方法有效提高了塔架位移的测量精度以及形变监测的实时性。

Aiming at the problem of excessive load during the operation of wind turbines caused bythe large displacement of the tower top of the wind turbine,the measurement method of phase difference positioning based on inertial navigation measurement system is studied.The traditional on-site observation and measurement have the problems of complicated steps,unable to monitor in real time,and low precision.It is proposed to build a monitoring network to monitor the satellite positioning system to transmit data,and realize the real-time monitoring of the unit tower through the displacement conversion algorithm.The tower deformation model is established.First,the center latitude and longitude coordinates and heading offset angle of the tower top of the unit are calculated.Then,according to the measured information and the unit calibration information,it is converted into the overall displacement of the unit tower top and the position relative to the engine roomin real time.Displacement of the tower top in the front-rear and left-right directions.By comparing-the estimated load of the tower displacement with the bending moment load of the load sensor,it is proved that the method can effectively improve the measurement accuracyof the tower displacement and the real-time performance of the deformation monitoring.