Analysis And Improvement Of Design Parameters Of Wind Deflection Angle Of Transmission Lines In Shenzhen

In recent years,with the rapid development of the national economy,the demand for electricity in society has increased.High-voltage overhead transmission lines are the main carrier of power supply,which is related to the country's production and construction,people's life order and social harmony and stability.Based on the distribution characteristics of typhoon in Shenzhen Power Grid and its influence on high-voltage transmission lines,this paper proposes an improved design method from the perspective of analysis of line wind angle design parameters,aiming to provide reference and reference for how transmission lines can resist typhoon disasters.First of all,it summarizes the characteristics of the failure of Guangdong Power Grid and Shenzhen Power Grid transmission lines due to typhoon disasters.Then,the climate characteristics and typhoon activity in Shenzhen area are introduced.At the same time,according to the data of Shenzhen National Basic Weather Station,the instantaneous large wind speed value in Shenzhen area is determined and the wind area classification is divided.Secondly,the idea of designing the wind speed of the wind-off angle design of the transmission line of Shenzhen according to the instantaneous wind division is proposed.According to the calculation method of the wind angle of the transmission line,the value of the design parameters affecting the wind yaw angle of the line is analyzed.Through the comparative analysis and analysis of domestic power grid equipment and facility design standards and international standards(IEC),it is found that under different standards The design parameters vary greatly.According to the statistical analysis of meteorological data collected by differences and collected,combined with the typical case analysis of natural disasters caused by natural disasters,and the geographical and meteorological conditions of coastal areas such as Shenzhen,the evaluation calculation model and method for improving the design parameters of wind-offset angles of transmission lines are studied.Finally,the specific improved design method and improved design measures for the design parameters of wind deflector of transmission lines in Shenzhen are given.Based on the analysis of typical wind-fault fault conditions of Shenzhen Power Grid,according to the relevant provisions of China's current power industry standards for wind-proof transmission lines,further study on improving the wind-proof design standards for overhead transmission lines with voltage levels of 110 kV and above.It is also listed that the lines that have been improved and improved in recent years have been effective in resisting typhoon natural disasters.The development of this paper will make the calculation and evaluation methods of the wind power level of Shenzhen Power Grid more scientific and precise,and the choice of measures is more systematic,scientific and standardized.This is important for the assessment of the effectiveness of wind protection measures in the future,further improving and standardizing countermeasures,effectively reducing the failure rate and accident rate of Shenzhen Power Grid,improving the reliability of power supply in Shenzhen Power Grid,and important for the protection of typhoon work in coastal power grids such as Guangdong.