Current online monitoring methods for wind-induced wire swing mostly adopts unidirectional layout of monito-ring nodes,and thus are confounded by small monitoring coverage and sluggish response to anomalies.In view of this the present work studied modification of method to online monitor wind-induced wire swing deviation of ultra-high voltage transmission lines.By considering current online monitoring requirements and standards,initial monitoring indicators were set up and modal analysis was carried out.A multi-dimensional crossover method was adopted to expand the coverage of monitoring and rationally arrange multi-dimensional crossover nodes.Based on this,a transmission line wind-induced swing FBG online monitoring model was constructed which uses phase measurement to realize online monitoring process-ing.The final test results indicated that compared to conventional technologies such as weighing-based method,and Φ-OTDR method,the proposed method can achieve responding time consumption to anomalies effectively controlled below 0.2 s,indicating an obvious improved quality and efficiency within the current monitoring range.
关键词
超高压/输电线路/导线风偏/监测方法/在线监测/电路控制
Key words
ultra-high voltage/transmission line/wind-induced wire swing/monitoring method/online monitoring/cir-cuit control
维普
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