CAJ | 학술논문

与常规线路相比,紧凑型线路在缩小线路走廊占地和提高输送容量方面具有明显的优势,其在结构上最大的特点就是相间空气绝缘距离小,为保证其运行安全,需要在相间加装相间间隔棒。为研究1 000kV紧凑型线路用相间间隔棒的配置,利用清华大学编制的输电导线多档3自由度模型的计算软件,对1 000kV紧凑型线路在加装相间间隔棒前后各种外力作用下的动力响应以及导线的静态张力和弧垂进行了分析。计算结果表明,在1 000kV紧凑型输电线路上加装一支结构高度14m,芯棒直径55mm的相间间隔棒能够有效抑制其在短路电动力和大风激励下的不同步摆动,并且加装相间间隔棒对导线张力、弧垂的影响都在允许范围内,线路仍然可以安全运行。
여상규선로상비,긴주형선로재축소선로주랑점지화제고수송용량방면구유명현적우세,기재결구상최대적특점취시상간공기절연거리소,위보증기운행안전,수요재상간가장상간간격봉。위연구1 000kV긴주형선로용상간간격봉적배치,이용청화대학편제적수전도선다당3자유도모형적계산연건,대1 000kV긴주형선로재가장상간간격봉전후각충외력작용하적동력향응이급도선적정태장력화호수진행료분석。계산결과표명,재1 000kV긴주형수전선로상가장일지결구고도14m,심봉직경55mm적상간간격봉능구유효억제기재단로전동력화대풍격려하적불동보파동,병차가장상간간격봉대도선장력、호수적영향도재윤허범위내,선로잉연가이안전운행。
To ensure its safe operation,it is necessary to install the phase-to-phase spacer on compact transmission lines.To study the configuration of phase-to-phase spacer is of great significance.Consequently,by using the calculation software of 3 degrees of freedom（DOF） dynamic model of multi-span line established by Tsinghua University,we obtained the dynamic response of the transmission line under external forces as well as the line tension and static sag both in the presence and absence of phase-to-phase spacer.The results indicate that installing a phase-to-phase spacer with height 14 m and diameter 55 m can effectively suppress the transmission lines＇ non-synchronous movement caused by short circuit electro-dynamic force or strong wind.Moreover,the effects of installing a phase-to-phase spacer on the transmission lines＇ tension and sag are both in an allowable range,and the system can still operate in security.