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Title: |
Study of Configuration and Optimization for Interphase Spacers of 750kV Compact Transmission Line |
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Source: |
Power and Energy Engineering Conference (PEEC 2010 E-BOOK)
(pp 731-736)
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Author(s): |
Kuanjun Zhu, China Electric Power Research Institute, Beijing, China, 102401
Xinmin Li, China Electric Power Research Institute, Beijing, China, 102401 |
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Abstract: |
It is significance to study the flashover characteristic of 750kV overhead transmission line. Aiming to the issue of windage yaw flashover fault because of asynchronous swaying between the phases in compact overhead transmission line, the calculation model of conductor system is set up through the combined wind load model with operating experience of transmission line. Making use of the unconditional stable Newmark method and load-increment method, the nonlinear dynamic response for asynchronous swaying in compact transmission line is researched. The character of asynchronous swaying in compact transmission line was obtained after the conductor nonlinear response is analyzed under different wind load model, then the corresponding prevention measures and configuration of interphase spacers is given. The research result indicate that there is a better consistency between the calculation result with operation experience, and the prevention measure of control asynchronous swaying is effective. This obtained research result can not only provide the design foundation for the windage yaw flashover of the compact transmission, but also reduce the configuration number of interphase spacers and line project cost.
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