摘要
针对55kV岗云线路故障，引起云白Ⅰ、Ⅱ线接地距离装置中的零序功率方向。相差高频保护误动的原因进行了分析，通过模拟试验证实，保护误动原因是由于暂态过程中的非周期分量引起的，根据保护装置原理采取了相应的对策。
The maloperation causes of direchonal zero - phase -sequence power rela and phase differential HF protection of theearth distance protection on Yun - Bai line during 500kV Gang - Yun line fault are analyzed in this paper. It is proved from analogue test that the protection's maloperation results from DC component during the transient process. Some corresponding countermeasun are adopted according to the protection principle.
出处
《继电器》
CSCD
1998年第2期43-46,共4页
Relay
