摘要
由于同杆双回线间较强的耦合作用,造成潜供电弧不易自熄,影响了单相自动重合闸的成功率,必须采取措施熄灭潜供电弧。在分析了各种熄弧措施的特点后,提出采用快速接地开关(HSGS)熄灭同杆双回线的潜供电弧。利用相模变换的方法和EMTP计算了采用HSGS后线路的潜供电流和恢复电压,结果表明HSGS用于同杆双回输电线路可显著减小故障相上的恢复电压和潜供电流,使潜供电弧可靠熄灭。
Due to the coupling between double-circuit lines, the values of the secondary arc current and the recovery voltage on the double-circuit lines are higher than that on the single-circuit line. These will affect the possibility of successful auto-reclosure. In order to ensure the successful single-pole auto-reclosure, the values of the secondary arc current and recovery voltage must be limited to be less than some values. In this paper, the method using the high speed grounding switches (HSGS) to extinction the secondary arc on the double-circuit lines is proposed. The simulation results show that the magnitude of the secondary arc current and the recovery voltage is reduced by HSGS notably. The calculation results conform to the theoretical analysis. The proposed method in this paper is a good approach to extinction the secondary arc on the double circuit transmission lines.
出处
《电工电能新技术》
CSCD
北大核心
2005年第2期5-7,31,共4页
Advanced Technology of Electrical Engineering and Energy
关键词
快速接地开关
同杆双回线
潜供电流
恢复电压
high speed grounding switches (HSGS)
double-circuit transmission lines
secondary arc current
recovery voltage
