基于对称分量法的电弧炉无功补偿技术  

Reactive Power Compensation Technology of Arc Furnace base on the Symmetric Component

作　　者：贾文超[1] 赵欣[1] 曹玺[1] 鲍迪[1] 

机构地区：[1]长春工业大学电气与电子工程学院,吉林长春130012

出　　处：《工业加热》2010年第1期35-38,共4页Industrial Heating

基　　金：国家科技支撑计划项目(2007BAE17B00)

摘　　要：电弧炉具有低电压、大电流而且负荷非线性的特点,在其运行过程中产生大量的负序电流,导致电网不稳定。通过对称分量法提取出负序分量,进而应用单片机控制投切补偿电纳,进行无功功率补偿,从而有效地抑制了负序电流,使电网稳定运行。计算机仿真表明,提出的无功补偿技术可以有效地补偿负序电流,使电弧炉运行在三相对称状态。The characteristics of arc furnace are low voltage, big current and nonlinear load. Much negative sequence current is produced during running. As a result, the power net is unstable. In this paper, the negative sequence component is taken out by using the symmetric component. SCM control switching compensation susceptance to carry out reactive power compensation. The negative sequence current will be controlled effectively and make sure the power net steady. The computer simulation indicates that the negative sequence current is compensated effectively by reactive power compensation algorithm. As a result, arc furnace is running in three phase symmetry state.

关 键 词：电弧炉 无功补偿 对称分量法 MATLAB仿真 

分 类 号：TM924.4[电气工程—电力电子与电力传动]