CAJ | 학술논문

750 kV同塔双回紧凑型线路在国内外尚无先例,因此在杆塔型式选择,绝缘子串及相间合成间隔棒设计上需要进行很多开创性的工作.为了给我国第1条750 kV同塔双回紧凑型输电线路的相间合成间隔棒提供设计依据,对750 kV同塔双回紧凑型输电线路相间间隔棒力学特性进行了深入研究.首先引用大挠度理论介绍了750kV同塔双回紧凑型线路的相间合成间隔棒的稳定后屈曲特性,然后又采用一种相间间隔棒的精确受力模型通过计算机仿真计算了相间合成间隔棒所承受的压力与轴向压缩量的关系,并且通过它的大屈曲试验验证了这种精确受力模型的正确性,通过比较34和40 mm两种不同芯棒直径的相间间隔棒的试验与仿真数据,最后给出了750kV同塔双回紧凑型线路相间合成间隔棒的芯棒直径的推荐值为40 mm.
750 kV동탑쌍회긴주형선로재국내외상무선례,인차재간탑형식선택,절연자천급상간합성간격봉설계상수요진행흔다개창성적공작.위료급아국제1조750 kV동탑쌍회긴주형수전선로적상간합성간격봉제공설계의거,대750 kV동탑쌍회긴주형수전선로상간간격봉역학특성진행료심입연구.수선인용대뇨도이론개소료750kV동탑쌍회긴주형선로적상간합성간격봉적은정후굴곡특성,연후우채용일충상간간격봉적정학수력모형통과계산궤방진계산료상간합성간격봉소승수적압력여축향압축량적관계,병차통과타적대굴곡시험험증료저충정학수력모형적정학성,통과비교34화40 mm량충불동심봉직경적상간간격봉적시험여방진수거,최후급출료750kV동탑쌍회긴주형선로상간합성간격봉적심봉직경적추천치위40 mm.
750 kV compact transmission line with double circuits on the same tower needs much pioneering work in the choice of tower, insulator string and phase-to-phase spacer for the lack of experiences. In order to provide design basis to the phase-to-phase composite spacer of the first 750 kV compact transmission line with double circuits on the same tower in our country, we studied the phase-to-phase composite spacer's mechanical characteristics of 750 kV compact transmission line with double circuits on the same tower in detail. First , the large deflection theory on the stability of the Post-buckling properties was introduced, then a model of precision force simulating the relationship between the pressure of the phase-to-phase composite spacer and the amount of its axial compression was adopte to prove the correctness of the precision force theory. By comparing the experimental and simulation data of phase-to-phase composite spacers with two different diameters of 34 mm and 40 mm, the recommended diameter values of the phase-to-phase composite spacer were put forward.