In fault state , a double circuit transmission line can he decoupled into common sequence component network and differential sequence component network 由于并联电抗器的安装，直接测取双回线两端母线处的电压及线路流过的电流进行测距，必然会引起误差。
Considering the characteristics of shunt reactors , this paper proposes an accurate fault location algorithm based on differential sequence component network , which only uses the currents at two terminals of a transmission line 采用基于反序网的双端量算法进行故障测距，并根据并联电抗器的特点消除其影响。
In order to compensate for the capacitive charging power of transmission lines , control reactive power flow , stabilize operating voltage and restrict arc current , the shunt reactors are usually installed on ehv transmission lines , especially for uhv transmission lines 摘要超、特高压输电线路为了补偿线路的容性充电功率，控制无功潮流，稳定网络运行电压，限制潜供电流等，一般要安装并联电抗器。
We introduce the category , property of the reactive power source and the component of the power market , including the generator , phase modifier , condenser , svc , and parallel connection reactor , and discuss the reactive power balance in power market 介绍了无功市场中无功电源：发电机、调相机、电容器、静止补偿器、并联电抗器以及他们的特点；讨论了无功市场中各组成部分以及无功市场的平衡。
The study bases on the four operating conditions of which the longnan network will be implemented in the year of 2005 and 2010 . first , this paper calculates the power flow distribution that including the line charging reactive power and input of the low - voltage shunt reactor in chengxian s / s . assumed that the bus voltage of tianshui s / s and bikou power plant to be constant , the study count the voltage level of the 330kv and 220kv bus - bar when the 330 / 220kv transformer in standard tap changer position . in order to set control rules 本文基于陇南电网在规划发展水平年2005年及2010年的四种可能的运行方式下及潮流条件，计算出了计入线路充电无功及投入成县变低压并联电抗器后的潮流分布，在设定甘肃大网侧及碧口电厂侧母线电压恒定条件下，计算了330kv及220kv主变在有载调压标准分接头变比下的330kv及220kv母线电压水平。
