摘要在分析传统变电站和发电厂主变压器出线连接方案的基础上,结合目前特高压设备的制造水平,提出了特高压主变的两种可行出线方案——1 000 k V架空线出线方案和1 000 k V气体绝缘金属封闭输电线路(GIL)出线方案。对比两种方案,GIL具有可靠性高、使用寿命长、环境影响小、维护工作少等优点。在用地面积受限、环保及美观性要求提高时,推荐采用1 000 k V电压等级GIL的连接方案。
6Hillers T, Koch H. Gas insulated transmission lines for high power transmission over long distanees[C].// IEEE 1998 International Conference on Energy Management and Power Delivery. [S. l.]: IEEE, 1998: 613-618.
7Finkel M, Boeck W, Lederle C. Statistical behavior of GIS and GIL[C] //Insulations Proceedings of the 7th International Con ference on Properties and Applications of Dielectric Materials. Nagoya, Japan: [:s. n. ], 2003: 37-40.
8Kuroyanagi Y, Toya A, Hayashi T, et al. Construction of 8000 A class 275kV gas insulated transmission line[J]. IEEE Trans actions on Power Delivery, 1990, 5(1):14-20.
9Schoeffner G, Graf R. Suitability of N2-SF6 gas mixtures for the application at gas insulated transmission lines GIL[C]// 2003 IEEE Bologna Power Tech Conference. Bologna, Italy: IEEE, 2003 : 1-6.
10Volcker O, Koch H. Insulation co-ordination for gas-insulated transmission lines (GIL) [J]. IEEE Transactions on Power Delivery, 2001, 16(1) :122-130.
