A two-degree-of-freedom calculation method for torsional vibration frequency of UHV single-column guyed tower
A technology of torsional vibration frequency and calculation method, which is applied in the field of guyed towers, can solve problems such as the research on the natural vibration characteristics of single-column guyed towers, and there are no relevant reports.
Active Publication Date: 2017-08-29
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology
At present, the research on the dynamic characteristics of the single-column guyed tower is mainly the dynamic response of the single-column guyed tower under various wind loads. There are no relevant reports on the study of the natural vibration characteristics and mechanism of the single-column guyed tower.
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The invention discloses an extra-high-voltage single pole bracing wire tower torsion frequency two-freedom-degree calculation method, and belongs to the technical field of bracing wire towers. Torsional deformation of a main pole is considered, torsional vibration of a bracing wire tower is simplified into a two-freedom-degree model, and the first-order torsion frequency of the bracing wire tower is calculated by calculating the torsional rigidity of a bracing wire, the rotational inertia of the bracing wire and the torsional rigidity of the main pole. Compared with a single-freedom-degree model, the method has the advantages that the condition that the main pole of the extra-high-voltage bracing wire tower is long, thin and large is considered, calculation results are relatively coincident with results obtained through finite element numerical simulation, the model simplifying rationality is verified, and the extra-high-voltage single pole bracing wire tower torsion frequency two-freedom-degree calculation method can be used for calculating the single pole bracing wire tower torsion frequency.
Description
A two-degree-of-freedom calculation method for torsional vibration frequency of UHV single-column guyed tower technical field The invention relates to a method for calculating the torsional vibration frequency of a cable tower, which belongs to the technical field of cable towers, in particular to a method for calculating the torsional vibration frequency of a UHV single-column cable tower. Background technique The development of UHV power transmission can meet the needs of large-scale, cross-regional and long-distance power transmission. UHV guyed tower has the advantages of simple structure, good mechanical performance, superior economic index, convenient construction, etc., and has good application prospects. UHV lines in my country should use guyed towers. Compared with other types of DC UHV cable towers such as double-column suspension cable cable towers and door-type cable towers, the single-column cable tower has the advantages of relatively small footprint, simple ...
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IPC IPC(8): G06F19/00
Inventor 杨文刚王璋奇朱伯文
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)