Y/>/D平衡变压器带单相负载的Matlab仿真分析  

Analysis of the Simulation Model on Matlab of Y/>/D Balanced Transfomer with Single-phase Load

作　　者：田文君[1] 陈小强[1] 田铭兴[1] 

机构地区：[1]兰州交通大学自动化与电气学院,甘肃兰州730070

出　　处：《兰州交通大学学报》2010年第4期32-35,共4页Journal of Lanzhou Jiaotong University

基　　金：甘肃省自然科学基金(096RJZA092);甘肃省高等学校基本科研业务费专项资金资助项目

摘　　要：通过分析Y/>/D平衡变压器的电压电流关系,得到了负序电流和两相侧电流之间的关系;根据移相原理,分析了Y/>/D平衡变压器带单相纯阻性负载时电感、电容和负载的匹配关系,以及负载变化对不平衡度的影响.基于Matlab建立了Y/>/D平衡变压器的仿真模型,并由此建立了Y/>/D平衡变压器带纯阻性负载供电系统的仿真模型.通过正常工况、开路和短路故障工况,以及空载合闸过程的仿真分析,证明了Y/>/D平衡变压器的仿真模型的正确性和可行性.According to analyzing the relationship between voltage and current of Y/〉/D balanced transformer at first, the relationship between negative sequence current and the two-phase current is got. On the basis of phase-shifting principle, it analyses the matching relationship among inductance, capacitance and resistance when Y/〉/D balanced transformer having a pure resistive load,and the effect that load fluctua- tion has on the unbalance factor. Then, on the base of Matlab, the simulation model of the balanced transformer and power supply system of Y/〉/D balanced transformer with pure resistive load are set up. At last, by means of the simulation analysis in conditions of normal, open circuit and short circuit, the simulation model of Y/〉/D balanced transformer is demonstrated to be correct and acceptable.

关 键 词：Y/>/D平衡变压器 不平衡度 单相负载 MATLAB仿真 

分 类 号：TM401[电气工程—电器]