摘要
以我国第一条±500 kV葛州坝至上海超高压直流输电线路为模型,运用电磁暂态计算程序EMTP.对开断直流线路过程中高压直流断路器的工作条件进行了计算,分析了系统参数对断路器工作条件的影响,确定出在最严重情况下,即I=4kA时葛-上线开断过程中吸能装置耗散能量达15.7MJ,通流时间为11.6ms。同时计算分析了金属回线转移开关MRTB开断过程中直流断路器的工作条件,并与线路用宜流断路器一断口的情况进行比较,提出了首先发展MRTB的研究方向。
In this paper, the analysis and calculation of operating conditions of HVDCCB and metallic return transfer breaker (MRTB) during interrupting process in Gezhouba-Shanghai HVDC transmission line have been made with the Electro-Magnetic Transients Program (EMTP). The influence on energy absorber which is made by the system inductance and interrupting current is analysed. In the most serious situation, when I = 4kA, the dissipated energy in energy absorber is 15.1 MJ, and the current duration is 11.6 ms. At the same time, the comparison of operating conditions between HVDCCB and MRTB is made.
出处
《清华大学学报(自然科学版)》
EI
CAS
CSCD
北大核心
1993年第4期13-21,共9页
Journal of Tsinghua University(Science and Technology)
关键词
高压
直流断路器
输电线路
断路器
high voltage
DC circuit breaker
MRTB
energy absorber