几种海底电缆断裂点外部探测方法及对比

Several methods and comparison of external detection of submarine cable breaking points

针对目前海上风电场运维阶段海缆断点快速探测及修复的需求,研究了海底电缆断点探测技术。结合具体案例,在判别特征、探测效率、干扰因素、定位精度等方面分析了声学和电磁学在海缆断点的探测能力。声学探测法具有断点判别特征明显、探测效率快、精度高、易受底质扰动影响等特点,电磁法与声学探测法存在较好的互补。实际作业中根据具体环境制定合适的探测方案,可有效提高断点探测效率和准确度。上述方法可广泛用于海底电缆断点检测领域,促进我国海上风电资源开发利用。

Submarine cable breaking point detection technologies were studied in response to the current demand for rapid detection and repairment of submarine cable breakpoints during the operation and maintenance period of offshore wind farms.By combining concrete cases,the detection capabilities of acoustics and electromagnetism methods in submarine cable breakpoints were analyzed in terms of discriminative features,detection efficiency,interference factors,positioning accuracy,etc.The acoustic detection method has the characteristics of obvious breakpoint discrimination,good detection efficiency,high accuracy,and susceptibility to sediment disturbances.Good complementarity exists between the electromagnetic method and the acoustic detection method.The efficiency and accuracy of breakpoint detection can be effectively improved by making appropriate detection plans according to the specific environment at practical work.The methods mentioned above can be widely used in the field of submarine cable breakpoint detection and help improve the development and utilization of offshore wind power resources in China.