电容补偿在配电网电压调节中的应用  

Application of capacitance compensation in voltage adjustment of distribution power system

作　　者：张先泰[1] 蔡金锭[1] 丁智华 陈廉青 

机构地区：[1]福州大学电气工程与自动化学院,福建福州350108 [2]宁德电业局,福建宁德352100

出　　处：《电力自动化设备》2011年第2期116-118,128,共4页Electric Power Automation Equipment

基　　金：福建省电力有限公司科技项目基金资助

摘　　要：针对某些配电网负荷电压水平不满足要求和电压波动较大的问题,提出基于串联电容补偿的配电网负荷电压调节与稳定方法。通过在配电线路上串入可调电容,根据电容电压损耗与线路原电感电压损耗极性相反的特征,在负荷波动的情况下利用电容电压抵偿线路电感电压即可调节和稳定负荷侧电压。通过实时采样负荷功率,计算补偿电路的晶闸管触发角,调节电容补偿量以稳定负荷侧电压。利用Matlab的PSB模块搭建了一条带有晶闸管控制串联电容补偿的配电线路,仿真结果验证了理论分析的正确性。The series capacitance compensation is applied to realize the load voltage adjustment and stabilization for those distribution power systems which have large voltage fluctuation or could not meet the requirement of load voltage level. The adjustable capacitor is inserted into the distribution line and its voltage is used to compensate the line inductor voltage when load fluctuates,which could adjust and stabilize the voltage. The load power is sampled and the thyristor trigger angle of compensation circuit＂ is calculated in real time to adjust the level of capacitance compensation. A distribution system model with series capacitance compensation is built with PSB module in Matlab and the simulative result verifies the correctness of the theoretical analysis.

关 键 词：配电网 串联电容补偿 调压 晶闸管 仿真 

分 类 号：TM761[电气工程—电力系统及自动化]