CAJ | 학술논문

导线覆冰脱落会引起导线剧烈跳跃摆动，导致输电线路产生严重的机械、电气事故。为明确输电线路脱冰跳跃幅值特性，揭示各项参数及其交互作用对冰跳幅值的影响规律，采用数值模拟方法，建立导线‐绝缘子串耦合模型，对冰跳幅值在不同影响因子作用下的变化特性进行研究。结果表明，导线跳跃幅值随着覆冰厚度、脱冰量、导线刚度的增加而增加，其增大的幅度不断上升；冰跳幅值随着连续档数的增加而趋于稳定；悬挂点高差、绝缘子串长度等因素对跳跃幅值影响较小；不同脱冰方式导线跳跃幅值相差较大；风荷载对导线横向摆动影响较大，对竖向跳跃影响较小；交互作用分析过程中，脱冰量对冰跳幅值影响最大，脱冰方式与脱冰量之间的交互作用对幅值影响最小。相关成果为覆冰线路设计及后续覆冰脱落分析研究提供参考借鉴。
도선복빙탈락회인기도선극렬도약파동，도치수전선로산생엄중적궤계、전기사고。위명학수전선로탈빙도약폭치특성，게시각항삼수급기교호작용대빙도폭치적영향규률，채용수치모의방법，건립도선‐절연자천우합모형，대빙도폭치재불동영향인자작용하적변화특성진행연구。결과표명，도선도약폭치수착복빙후도、탈빙량、도선강도적증가이증가，기증대적폭도불단상승；빙도폭치수착련속당수적증가이추우은정；현괘점고차、절연자천장도등인소대도약폭치영향교소；불동탈빙방식도선도약폭치상차교대；풍하재대도선횡향파동영향교대，대수향도약영향교소；교호작용분석과정중，탈빙량대빙도폭치영향최대，탈빙방식여탈빙량지간적교호작용대폭치영향최소。상관성과위복빙선로설계급후속복빙탈락분석연구제공삼고차감。
Ice‐shedding can cause violent oscillation of the lines ,and make the conductors jump up and down .Wire‐insulator string coupling model was established based on finite element software ,and nu‐merical simulation method was used to get the amplitude characteristics of ice‐shedding on transmission lines ,and revealing the influence of various parameters on the amplitude of ice‐shedding .T he results shows that :The amplitude of ice‐shedding increases faster and faster with the ice thickness ,percentage of ice‐shedding and conductor stiffness increasing ;the number of spans per line section within a certain range of the amplitude of ice‐shedding is larger ,the impact tends to be stable w hen the number more than a certain file ;these factors of the elevation between suspension points and insulator have a little effect on amplitude of ice‐shedding ;with different type of ice‐sheding the amplitude of ice‐shedding has a great change;the wind load has a great impacts on the horizontal displacement of transmission line .Per‐centage of ice‐shedding on the jump amplitude has maximum effect ,the interaction between percentage of ice‐shedding and type of ice‐sheding has minimal impact to the amplitude .It provides a reference for sub‐sequent ice‐shedding analysis ,and makes a certain guiding role in formulating the scientific and reasona‐ble ice melting and deicing method at the post‐icing .