摘要
高速铁路电力牵引功率较高,其短路电流水平也较大,在短路故障时牵引变压器的热稳定性容易遭到损坏,目前的保护配置方案不能完全满足变压器安全稳定运行的需要。本文将反时限过流保护作为牵引变压器的后备保护,与主保护和各后备保护相配合,对其适用情况进行了研究,并提出其保护配置方案。
The level of high-speed railway electrical traction power is very high, and so is the short circuit current, so the short circuit fault happened the thermal stability of traction transformer is more easily to damage. The current protection scheme of traction transformer can not meet the needs of security and stability completely. In this paper the inverse time overeurrent protection act as the backup protection of traction transformer, coordinated with the main protection and other backup protection. Making a study on its application circumstances, and proposing the protection scheme of inverse time overeurrent protection.
出处
《电气技术》
2013年第6期38-40,共3页
Electrical Engineering
关键词
高速铁路
牵引变压器
后备保护
反时限过流保护
high-speed railway
traction transformer
backup protection
inverse time overcurrentprotection
