【摘要】 横联差动电流方向保护是双回线的专用保护,当平行双回线只有单回线运行时必须闭锁横差保护,由于某种原因使线路本侧或对侧断路器跳开时横差保护也不应该误动。横差保护需附加若干闭锁措施才能保证不误出口。从双回线路横差保护的基本动作原理出发,结合动作判据,探讨了大电流接地系统同杆双回线横差保护在各种情况下闭锁的原因,并提出了一些闭锁措施,为保护的正确动作提供了理论依据。更多还原

【Abstract】 Transverse differential current direction protection is a special protection for double-circuit lines on the same pole. Transverse differential protection must be locked when there is one line operating on the parallel double-circuit lines. It should not be misoperation when the breaker is tripping off for some reasons. Transverse differential protection need additional lock measures to guarantee from error outlet. According to the principle and action criterion of transverse differential protection,this paper conducts an investigation in all kinds of reasons of lock on high-current grounded system and brings forward some lock methods. This offers a theoretical basis to guarantee the protection’s exact action.更多还原