双分裂导线脱冰动力响应缩比模拟方法及试验

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中图分类号：03 文献标志码：A 文章编号：1000-582X（2025）12-082-17

doi：10.11835/j.issn.1000-582X.2025.267

Abstract：Based on similarity principles，this study proposes a reduced-scale modeling and testing method to investigate the dynamic responses of twin-bundle conductor lines after ice-shedding.The processes of iceaccretion and subsequent shedding on sub-conductors of bundled conductors were successfully simulated. A reduced-scale experimental platform was establishedto measure the in-plane，out-of-plane，and torsional motions of conductors afterice-shedding，as wellas thetime historiesofconductortensionand the longitudinal，vertical， and horizontal components of reaction forces at the suspension points.Reduced-scale tests were conducted on a representative twin-bundle conductor line under three conditions： partial ice-shedding and unzipping ice-shedding from a single sub-conductor，and asynchronous ice-shedding between two sub-conductors.The variations in jumping height，lateral swing amplitude，torsion angle，and conductor tension，along with the reaction forces at suspension points over time， were recorded and analyzed.

Keywords：transmission line；twin-bundle conductor；ice-shedding dynamic response；similarity principle; reduced-scale model

中国地域辽阔，煤电、水电、太阳能和风电资源与工业密集地区分布不均，依托“西电东送”“北电南送"战略，跨地区长距离电网建设如火如茶。（剩余14647字）