Design of Blade Lightning Conductor Break Detection System Based on Travelling Wave Method
In order to avoid the problems of high detection cost and poor safety in the current methods,the paper uses the travelling wave method to design a wind turbine blade lightning conductor break detection system.The system consists of excitation module,detection module and data processing module.The system consists of an ex-citation module that sends out a pulse signal,a Roche coil sensor in the detection module that detects the signal waveform,a high-speed acquisition card that collects the data,and a data processing module that processes the da-ta to determine the lightning conductor breakage.The excitation module,detection module and processing module were designed.A calibration experiment was carried out on the wave speed of the system with wires of different lengths ranging from 10 to 70 m.The wave speed fluctuated between 2.05 X 108m/s and 2.35 X 108 m/s,and a de-tection model was established with y=-15.43+9.77x.The lightning arrester break detection is realized.
break detection systemtravelling wave methodtravelling wave velocitybreak detection model
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万方数据
