四相输电线路的参数及与三相输电系统兼容问题的研究

Research on Parameters of Four-Phase Transmission Line and Compatibility between Four-Phase and Three-Phase Power Transmission Systems

讨论了导线任意排列的四相输电线路的换位原则与参数计算方法和四相输电线路与现有三相系统的兼容问题。各相导线任意排列的四相输电线路采用滚动换位的方法,能够保证各相参数达到平衡。通过计算四相线路的相间几何均距,可得到与三相线路完全一致的四相线路电感、电容参数计算公式。由于三相变四相变压器在变相的同时也可以变压,可减小四相与三相混合输电系统的兼容成本。多回四相线路参数的平衡特性优于多回三相线路,四相输电适用于多回同杆并架输电线路的大容量输电工程。

The conductor transposition principle and parameter calculation method of four-phase power transmission line with arbitrary conductor configuration are researched, and the compatibility between four-phase and three-phase power transmission systems is analyzed. By means of rolling transposition, the parameter balance of four-phase power transmission line with arbitrary conductor configuration can be implemented. Through calculating the phase-to-phase geometrical mean distance of four-phase transmission line,...