Research And System Implementation Of Power Micrometeorological Windage Yaw Simulation Calculation And Early Warning Technology

China’s high voltage transmission line covers a wide area,long transmission distance and with complex terrain,micrometeorological characteristics in line corridor.Windage yaw flashover accidents caused by meteorological factors has become one of the major disasters influencing safe operation of high voltage transmission line our country.Therefore,carrying out power micrometeorological windage yaw flashover research has important practical value for the maintenance of high voltage transmission line safe operationAccording to the deficiency of the traditional windage yaw calculation model of high voltage transmission lines,this paper analyzes the mechanism of the influence of the power micrometeorological factors on the windage yaw,and studies the simulation calculation of windage yaw based on the power micrometeorological factors.Traditional windage yaw angle calculation model does not consider the impact of micrometeorological factors on air power density.This paper analyzes the influencing of micrometeorological factors(wind direction,wind speed,humidity,pressure,temperature)on the windage yaw of transmission lines,and proposed an improved calculating model of windage yaw angle based on power micrometeorological,and proposed an improved minimum air gap distance calculation model considering the influence of bundle spacing of bundled conductor.Analyzed by an example,the results show that the improved windage yaw calculation model is more accurate and more coincidence with the practical operation of transmission lines.According to the requirement of the minimum air gap distance design specification of transmission lines,this paper proposed a windage yaw warning technology based on the minimum air gap distance between the wire and the tower,and established a classification early warning model.And proposed four mathematical models to analyze the minimum air gap distance for prediction and early warning,among three mathematical models can analyze the relationship between minimum air gap distance and micrometeorological factors.Finally,simulated windage yaw by examples of micrometeorological data,and predicted the minimum air gap distance with modeling analysis the micrometeorological factors.The results show that the proposed mathematical models can analyze better the relationship between windage yaw and their impacted factors,and has a high precision in windage yaw disaster early warning.By analyzing the shortcomings of the existing transmission line windage yaw calculation method,this paper proposed a new windage yaw calculation method and new minimum air gap distance calculation method under micrometeorological conditions,and established the model and technology of windage yaw classification early warning,which provides a new theoretical basis for the study of windage yaw flashover accidents.At the same time,we use C#to design and develop a software of power micrometeorological windage yaw simulation calculation and disaster prediction early warning,which provides the engineering application value for maintaining the safe operation of the transmission line and preventing the windage yaw flashover.