双芯对称离散型可控移相器的数学建模  

Modeling of Two-core Symmetrical Discrete Thyristor Controlled Phase Shifting Transformer

作　　者：杨永前 崔勇[2] 杨增辉[2] 刘俊[3] 

机构地区：[1]国网江苏省电力公司电力经济技术研究院,江苏南京210008 [2]国网上海市电力公司电力科学研究院,上海200437 [3]西安交通大学电气工程学院,陕西西安710049

出　　处：《陕西电力》2014年第11期61-67,共7页Shanxi Electric Power

基　　金：中央高校基本科研业务费资助项目(NO.xjj2013026);中国博士后面上基金资助项目(NO.2013M542349)

摘　　要：详细讨论了双芯对称离散型可控移相器的工作原理,深入分析了考虑移相器等值阻抗后移相器各绕组之间的相量关系,并在此基础上推导了双芯对称离散型可控移相器的数学模型,建立了移相器等值电抗与移相角之间的数学关系表达式。利用本文的数学模型,计算了某双芯对称离散型可控移相器等值电抗与移相角的数值曲线,并以安德森3机9节点测试系统为例比对了计及和忽略移相器等值阻抗随移相角变化时的潮流控制结果。从比对结果可知,当移相角度较大时忽略移相器的等值电抗将带来大的计算误差。The paper discusses the phase shifting principle of two-core symmetrical discrete thyristor controlled phase shifting transformer （TCSD-TCPST）,and analyzes the phasor relationship among windings by considering the inductance of TCSD-TCPST.Based on the analysis the mathematical model of TCSD-TCPST is deduced and the formula of the inductance varying with shifting angle is built.The numerical curve of the inductance varying with shifting angle is calculated by the model.At the end,the load flow calculation results are compared between considering and neglecting the inductance of TCSD-TCPST by Anderson 3-machine-9-bus test system.The result show that the inductance of TCSD-TCPST can not be omitted if the shifting angle is large is obtained.

关 键 词：可控移相器 数学模型 等值电抗 潮流计算 

分 类 号：TM712.2[电气工程—电力系统及自动化]