摘要
分析了同杆架设线路间由于参数匹配引起的传递过电压,利用EMTP程序计算了东明开关站启动及任上Ⅰ线高压并联电抗器零起升压试验过程中可能出现的传递过电压。计算结果表明,参数匹配时最严重的传递过电压达1 150 kV,参数略有偏离谐振点,传递过电压明显降低;无论是新建线路启动投运还是正常运行中改变系统方式都需要定量计算,以避免传递过电压的发生。
In this paper, the linear resonance due to electrical coupling between two transmission lines on the same towers is analyzed. Two practical cases are calculated by use of EMTP. The calculation show that the highest transfer over-voltage will reach 1150 kV and the slightly change of system parameters will apparently reduce the transfer over-voltage. It is proposed that calculation must be done based on system condition to avoid the transfer over-voltage during commission and operation.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2005年第3期34-35,43,共3页
High Voltage Engineering
关键词
同杆架设
传递过电压
线性谐振
EMTP
transmission lines on the same tower
transfer over- voltage
linear resonance
EMTP
