摘要
在110kV单侧电源短距离重要输电线路这一特殊应用条件下,微机距离保护装置采用工频变化量距离保护原理具有优越性和存在不足之处。文章详细分析了工频变化量距离继电器在单侧电源线路中的动作特性,在原动作判据基础上增加了简单的工频变化方向判据,并结合四边形距离继电器特性,提出了一种可行性距离保护方案,从而实现了微机距离保护的快速性和可靠性。
As for the 110 kV single source and short distance transmission line,there are both advantages and the disadvantages when the microcomputerbased distance protection equipment is adopted and the power frequency variation(PFV)principle is applied. In this paper,the operating characteristic of the distance relay which is based on the PFV principle is analyzed when the relay is utilized in the single source and short distance transmission line. A simple direction formula is added to the original operating formula as a subsidiary condition. Considering the characteristic of the fourlateral distance relay, a feasible protection scheme is brought forward, which makes the distance protection more quickly and reliable.
出处
《合肥工业大学学报（自然科学版）》
CAS
CSCD
2003年第3期407-411,共5页
Journal of Hefei University of Technology：Natural Science
