Development Of Transmission Tower Parametric Modeling System And Wind Induced Response Analysis System

The transmission tower-line system plays an important role in the power system,and the transmission tower structure is greatly affected by thewind load.At present,the simplified model of transmission tower is used to calculate the wind-induced response of transmission tower in practical engineering.The single tower model is considered as the main object of calculation,and the coupling effect of transmission line on transmission tower is not considered.The wind load acting on the transmission tower structure is mainly simplified as static load,and does not conform to the fluctuating characteristics of wind load.The calculation analysis mainly in the analysis of time domain and frequency domain.If using the traditional CQC algorithm,it is difficult to achieve the great amount of calculation of engineering application,if SRSS algorithm is adopted,the mode coupling and calculation are neglected and the accuracy is missing.The purpose of this paper is to realize the parametric modeling of transmission tower-line coupling finite element model system,simulate the wind load acting on the structure of the transmission tower,use multi point pseudo-excitation-method to calculate wind-induced response.The main contents are as follows three aspects:1.At present,there are few calculation software for transmission tower system,and the modeling of power transmission tower is based on the needs of technicians.The transmission tower is complex in structure and large in number of poles.If each analysis is to be modeled,the repeatability is extremely large and the efficiency is very low.Based on the secondary development function of ANSYS,this paper can realize the parametric modeling of the three normal used transmission tower,the ganzi tower,the cat-head tower and the glass-liked tower.It can improve the working efficiency.The system can realize a number of different direction towers modeling,can complete the establishment of one or more resistance section of the transmission tower-line system.2.Based on MATLAB numerical software platform,the software module of wind load numerical simulation is designed to realize the numerical simulation of wind load.The module works with the ANSYS module,and he finite element model is built by the ANSYS module.Once model node is selected,the module extracts the node information,generates the wind load time history and the virtual excitation load for the corresponding node position.3.The system provides two kinds of wind-induced response parametric analysis modules,time domain analysis and frequency domain analysis.The MATLAB module to calculate wind load numerical simulation data,users only need to input the parameter analysis module must be in ANSYS,then you can automatically calculate the wind-induced response analysis of transmission tower-line system.