摘要
采用EMTP程序计算了昌平—房山500kV 紧凑型线路参数及其运行特性。计算结果表明,紧凑型线路与常规线路相比,具有许多特点,如正三角形排列的紧凑型线路可基本不换位;线路自然功率和送电能力提高了34% ～40% ,充电功率较大;装设高压并联电抗器和中性点装小电抗后可明显减少潜供电流和降低恢复电压;系统稳定性得到提高;送电极限比常规线路提高约40%
The parameters of 500kV Changping—Fangshan compact transmission line are calculated and compared with that of conventional transmission lines. On the basis of the above calculation the operation characteristics of the compact transmission line is analyzed. The analyses are computation of the unbalance of the electrical parameters of the compact line without transposition, the Q—S curve, the power angle loss, the power frequency overvoltage, the secondary arc current and the recovery voltage. Finally, the power transmitting ability of the compact line to be used to transmit power in a long distance is calculated and the result is compared with the transmitting ability of conventional transmission lines.
出处
《电网技术》
EI
CSCD
北大核心
2000年第2期10-13,共4页
Power System Technology
关键词
紧凑型线路
运行特性
输电线路
compact transmission line
operation characteristics
comparison
