Abstract
The natural wind disaster conditions,such as typhoon,may cause the transmission line static strength failure,or fatigue damage and fracture due to the system dynamic stress leading to tower crash and phase/grounding line broken.In this paper,based on the historical data of on-line monitoring system,the least square method is adopted to perform trend analysis and build the disaster early warning model.Then the on-line monitoring software is programmed by using C # language in .NET platform to realize on-line monitoring of such parameters as wind tower vibration and lines yaw,etc.,as well as wind disaster early warning.