Power transmission equipment dynamic property analysis method
A technology of dynamic characteristics and analysis methods, applied in the field of dynamic characteristics analysis of transmission equipment, can solve the problems of less dynamic response of transmission towers and less test benches for transmission tower systems
Active Publication Date: 2019-05-24
ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY +2
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Problems solved by technology
[0004] At present, there are few experimental studies on the dynamic response of transmission towers, and there are fewer test benches for transmission tower systems
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[0030] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.
[0031] The invention is a dynamic characteristic analysis method for power transmission equipment, such as figure 1 As shown, the main steps are as follows:
[0032] 1. Make the transmission tower-line coupling model according to the geometric size ratio of the transmission tower-line prototype and the model; when building the model, according to the similarity criterion, the model geometry sho...
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The invention discloses a power transmission equipment dynamic property analysis method. According to the technical scheme, the method includes: manufacturing a power transmission tower-line couplingmodel according to the geometric dimension proportion of a power transmission tower-line prototype and a model; mounting a measuring system on the power transmission tower-line coupling model; performing modality measuring analysis on the power transmission tower-line coupling model to obtain modality measuring data; performing power transmission tower-line coupling model vibration tests under a wind load effect according to the load bearing conditions of the power transmission tower-line coupling model to obtain vibration data; analyzing and processing the modality measuring data and the vibration data, comparing the obtained data with that of the power transmission tower-line prototype, and correcting the related parameters of the power transmission tower-line coupling model. By the method, the power transmission tower-line coupling model is provided, and the vibration modes, vibration frequency and the like of the power transmission tower-line coupling system under different conditions can be researched.
Description
technical field [0001] The invention belongs to the field of power transmission equipment, in particular to a method for analyzing the dynamic characteristics of power transmission equipment. Background technique [0002] Transmission lines are important power equipment, and the safety of transmission towers and transmission lines directly affects the reliability of the power grid. UHV transmission towers have the characteristics of large spans and high heights, which are very prone to collapse, disconnection and line galloping accidents. [0003] China is a country prone to wind disasters, with a large number of typhoons. In recent years, wind-induced collapse of transmission towers has occurred frequently, seriously affecting economic development. At present, for the integrated wind-induced response of transmission towers and lines, finite element models are mostly established to simplify the structure of transmission towers for analysis. [0004] At present, there are f...
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IPC IPC(8): G01M7/06
Inventor 王在华应光耀吴文健张宝蔡文方李卫军马思聪
Owner ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY