输电线路保护 meaning in English

line protection

The reliability of hv / ehv transmission line protection is important to the security of the power system . this thesis is devoted in the study of the transient current protection for hv / ehv transmission line
探索新的保护原理和方法，以提高输电线路保护的性能，是继电保护研究领域中的一个重要课题。
Especially , the relay protective settings of transmission line are greatly affected by network parameters and framework changing resulted from operational mode of system and the examining and repairing of equipment . so it makes the calculation of relay protective settings more complicated and the more repeated computation work and lasts more time , while the best plan ca n ' t always be achieved
尤其输电线路保护整定值受系统运行方式、设备检修等导致的网络参数和结构变化影响较大，使得其整定计算更加复杂繁琐，重复计算工作量非常大，耗时较长，而且还不一定能够得到最优方案。