CAJ | 학술논문

为了对雷击杆塔时的波过程进行分析,在已有杆塔主体等效模型基础上,研究了杆塔横担及斜材的等效模型。运用平行多导体等效阻抗的相关理论方法对杆塔横担的等效模型进行分析,通过在杆塔主体等效阻抗模型基础上乘以斜材修正系数的方法对杆塔斜材的等效模型进行分析,斜材修正系数包含的电容及电感修正系数分别通过分析斜材引起的电场能量及磁场能量变化来计算得到。计算结果表明,电容及电感修正系数分别为0.9895及0.8360,同时推导出斜材修正系数为0.8272。按照得到的杆塔横担及斜材等效阻抗模型计算方法,对500kVSZC3型杆塔模块化划分,建立了其雷击波过程分析研究时的等效阻抗模型。
위료대뢰격간탑시적파과정진행분석,재이유간탑주체등효모형기출상,연구료간탑횡담급사재적등효모형。운용평행다도체등효조항적상관이론방법대간탑횡담적등효모형진행분석,통과재간탑주체등효조항모형기출상승이사재수정계수적방법대간탑사재적등효모형진행분석,사재수정계수포함적전용급전감수정계수분별통과분석사재인기적전장능량급자장능량변화래계산득도。계산결과표명,전용급전감수정계수분별위0.9895급0.8360,동시추도출사재수정계수위0.8272。안조득도적간탑횡담급사재등효조항모형계산방법,대500kVSZC3형간탑모괴화화분,건립료기뢰격파과정분석연구시적등효조항모형。
In order to analyze the wave processes in the transmission tower struck by lightning,we studied equivalent models of cross arm and inclined holder based on an existing equivalent transmission tower model.The theory of parallel multi-conductor was applied to study the equivalent tower cross arm model.The equivalent inclined holder model was derived by multiply a compensation factor of inclined holder on the equivalent impedance model of tower main body.Meanwhile,the compensation factor of inclined holder was constituted by the capacitance and inductance compensation factor which were obtained by calculating the variation of electric field energy and magnetic field energy caused by inclined holder.The values of the capacitance and inductance compensation factor were 0.9895and 0.8360,respectively,and the compensation factor of inclined holder turned out to be 0.8272.Moreover,according to the calculation method of the equivalent impedance models of cross arm and inclined holder,the equivalent impedance model of a 500kV SZC3tower was established to analyze its surge process under lightning stroke.