Analysis Method And Application Of The Aeolian Vibration Characteristics Of The Bundle Conductor Based On Transfer Matrix

With the unbalanced distribution of electric power in china, the establishment of HV &SHV grid and power transmission system becomes necessary, and bundled conductors become increasingly common in application. The vibration of bundle conductors under the wind is serious. To satisfy the mechanical requirements of bundle conductors and to avoid the damage and the accident caused by wind, it is obliged to study on the wind-induced vibration of transmission line, for the purpose of providing anti-vibration measures method for the aeolian vibration of bundle conductor.A series of studies on aeolian vibration is taken in this paper. Starting with the basis theory study of aeolian vibration, the transfer matrix model is set to simulink the bundle conductor system, the actual application of the bundle conductor aeolian vibration system is investigated. The specific content including the following aspects:The theoretical basis for Aeolian vibration is investigated; the formation mechanism of aeolian vibration is researched deeply; The Vortex shedding parameters which affect the aeolian vibration of bundle conductor is analysised; Numerical simulation method is used to anlysis the influence of structure parameters on bundle conductor aeolian vibration, which validates the correctness of theoretical analysis.The transfer matrix method is optimized to model the bundle conductor system, and natural frequency of the system is solved. The finite element model is established and the modal analysis of the system is carried on, which verify the rationality of transfer matrix model. These results provide fundamentals of bundle conductor system for applications analysis later.The practical engineering application of bundle conductor aeolian vibration is discussed. The energy balance method is improved, and the meliorate objectives are wind input power and consumption power of the energy consuming equipment. These members of energy power will be applied to the numerical simulation, and the next step is to carry out calculations and to modify the structure of the transfer matrix model with the results. Finally, the feasible options are put forward, and this study will provide the theoretical and practical basis for the engineering application of bundle conductor aeolian vibration.