故障类型及换位方式对同杆双回线回路间耦合影响的研究

从理论上分析了不同换位方式对两回路间耦合的影响，建立了同杆双回线路研究模型，用EMTP方法计算了一回停运检修时运行回路在正常和故障情况下对检修回路的耦合电压与电流，结果表明换位方式是双回线回路间耦合的决定因素；当带电回路发生故障时，停运检修回路应采取严格的安全保护措施，还提出了实际操作中的几点注意事项。

INFLUENCE OF FAULT TYPES AND DIFFERENT TRANSPOSITION FORMS ON COUPLING BETWEEN TWO CIRCUITS ON SAME TOWER

The theoretical analysis of the influence of different transposition forms on the coupling between two circuits which constitute two circuits on same tower is given and an investigation model for two circuits on same tower is established.When one circuit of the two circuits is shut down to be examined and repaired,the voltage and current which are induced in the shut down circuit by the coupling from the another circuit which operates under both normal and accident condition,are calculated by EMTP,the calculation results show that the transposition form is the determinant which influences the coupling between the two circuits.When fault occurs in electroficated circuit of the two circuits,more strict protective measures should be applied to the shut down circuit. Some points for attention in the practical operation are put forward.