CAJ | 학술논문

在实际的输电线路中,导线悬挂点处的等效风荷载直接影响着绝缘子串风偏角,其大小与绝缘子串的不同悬挂方式和通过风压不均匀系数折算出的整档导线风荷载有关。为此,首先建立了两档导线有限元模型,仿真分析了绝缘子串的不同悬挂方式对导线悬挂点处的风荷载影响,然后通过在导线上不同位置施加稳态风和选取不同的风压不均匀系数来研究风压不均匀系数折算方法对导线悬挂点处风荷载的影响。研究发现：当稳态风风速为30m/s,且集中作用在导线悬挂点两端附近时,导线悬挂点处的风荷载与设计规范的风荷载差异率达到38.69%,该结果可以部分说明即使导线高度处的实际风速没有超过其设计风速,线路仍有可能会发生风偏跳闸。
재실제적수전선로중,도선현괘점처적등효풍하재직접영향착절연자천풍편각,기대소여절연자천적불동현괘방식화통과풍압불균균계수절산출적정당도선풍하재유관。위차,수선건립료량당도선유한원모형,방진분석료절연자천적불동현괘방식대도선현괘점처적풍하재영향,연후통과재도선상불동위치시가은태풍화선취불동적풍압불균균계수래연구풍압불균균계수절산방법대도선현괘점처풍하재적영향。연구발현：당은태풍풍속위30m/s,차집중작용재도선현괘점량단부근시,도선현괘점처적풍하재여설계규범적풍하재차이솔체도38.69%,해결과가이부분설명즉사도선고도처적실제풍속몰유초과기설계풍속,선로잉유가능회발생풍편도갑。
In actual operation of transmission line,the equivalent wind loads on two hanging points of a conductor have a direct impact on the insulator string windage yaw angle,and are related with the different hanging types of insulator strings and the wind load of whole conductor converted by the wind pressure asymmetric coefficient.We established a finite element model of two cross conductors,analyzed the influence of different insulator strings hanging types on the conductor hanging points,and studied the influence of wind load on the two conductor hanging points by flowing steady wind on the different locations of the conductor by choosing the different wind pressure asymmetric coefficient.The conclusion can be drawn that,when the steady wind speed is 30 m/s and blows intensively on the ends of the conductor hanging point,difference in rates of wind load between the two conductor hanging points and design specifications is 38.69%.The result can explain why windage yaw may trip although the actual wind speed does not exceed the design wind speed.