【摘要】 针对不同长度、不同耦合长度的实际多回输电线路的稳态分析问题,提出了基于归一化原理的输电线路分布参数计算方法。该方法可将具有复杂耦合关系的多回输电线路等效为具有归一化长度的多导体传输线系统,从而建立统一的多导体传输线方程。给出了输电线路分布参数归一化的原则、方法与步骤,并在此基础上给出了求解多回输电线路稳态解的相模变换算法。最后通过PSCAD/EMTDC验证了这种分布参数归一化方法的合理性。更多还原

【Abstract】 In allusion to steady-state analysis on actual multi-circuit transmission lines with different lengths and different coupling lengths,based on the principle of normalization a method to calculate distributed parameters of transmission line is proposed.Using the proposed method the equivalence between multi-circuit transmission lines with complex coupling relationship and multi-conductor transmission line system with normalized length can be implemented,and a uniform multi-conductor transmission equation can be established.The principle,methodology and procedures for the normalization of distributed parameters of transmission line are expounded,and on this basis a phase-mode transformation method is given to achieve steady-state solution.The rationality of the proposed method is verified by PSCAD/EMTDC based simulation result of an actual four-circuit transmission lines with different phase sequences arrangements on the same tower.更多还原