摘要
为了在广东电网500kV坪石—曲江送电线路的30mm及50mm重冰区选择满足技术要求且经济合理的导线截面和分裂型式,从输送容量、电磁环境、机械特性及工程投资等方面系统地介绍了该线路的导线选型论证。计算结果表明,采用双分裂大截面导线,电磁环境干扰值能满足规程要求;机械性能上,双分裂导线方案明显优于四分裂导线方案,并且能显著节省投资。因此,推荐该线路30mm及以上重冰区线段采用双分裂大截面导线。
The cross-section and bundle type of conductors are systematically demonstrated for the 500 kV Pingshi to Qujiang transmission line in 30 mm and 50 mm heavy icing area in terms of transmission capacity,electromagnetic environment,mechanical characteristics and project investment.The results show that the double-bundle conductors with large cross-section can satisfy the code requirement in interruption value of electromagnetic environment and is obviously superior to the four-bundle conductors in mechanical characteristics and can save investment significantly.The double-bundle conductors with large cross-section are therefore recommended for the power line in 30 mm and above heave icing areas.
出处
《电力建设》
2011年第1期49-53,共5页
Electric Power Construction
关键词
重冰区线路
导线选型
电磁环境
双分裂导线
四分裂导线
技术经济比较
transmission lines in heavy icing area
conductor selection
electromagnetic environment
double-bundle conductor
four-bundle conductor
technical and economic comparison
