安徽大学电机学实验报告

《安徽大学电机学实验报告》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、.....安徽大学实验报告实验名称三相变压器课程名称电机学实验专业班级：电气2班学号：Z21314092姓名:雷红实验日期：2015.10.13指导教师：钱喆成绩：word格式.整理版.....一、实验名称：三相变压器二、实验目的1.通过空载和短路实验，测定三相变压器的变比和参数。2.通过负载实验，测取三相变压器的运行特性。三、实验内容1.测定变比。2.空载实验测取空载特性UOL=f(IOL),P0=f(UOL),COSΦ0=f(UOL)。3.短路实验测取短路特性UKL=f(IKL),PK=f(IKL),COSΦK=f(IKL)。四、实验接线word格式.整理版.....五、实验记录1.测

2、定变比实验实验数据高压绕组线电压(V)低压绕组线电压（V）变比KUAB108.5Uab27.3KAB3.97UBC106.5Ubc26.3KBC4.05UCA105.8Uca26.5KCA3.992.空载实验实验数据序号实验数据计算数据UOL(V)IOL(A)PO(W)UOL(V)IOL(A)PO(W)COSΦ0UabUbcUcaIa0IboIcoPO1PO20166.065.063.00.1320.0790.1257.5-3.564.70.1124.00.3190259.860.057.00.0730.0400.0754.1-1.158.90.0633.00.4670357.757.05

3、4.00.0620.0350.0613.5-0.756.20.0532.80.5430456.356.153.00.0570.0320.0573.1-0.555.10.0492.60.5560555.054.351.20.0530.0300.0512.9-0.353.50.0452.60.6240653.052.349.10.0490.0270.0502.7-0.351.50.0422.40.6410749.849.046.20.0420.0240.0422.1-0.148.30.0362.00.6640825.024.222.50.0190.0100.0190.50.023.90.016

4、0.50.7550911.310.09.30.0090.0060.0100.10.010.20.0080.10.7083.短路试验实验数据序号实验数据计算数据UKL(V)IKL(A)PK(W)UKL(V)IKL(A)PK(W)COSΦKUABUBCUCAIAKIBKICKPK1PK20122.723.117.80.4400.4600.4659.72.121.20.45511.80.7060220.621.816.50.4000.4150.4138.11.719.60.4099.80.7060316.115.312.50.3090.3250.3224.71.014.60.3195.70.70

5、70410.310.18.90.2020.2050.2111.90.49.80.2062.30.707058.08.56.70.1510.1650.1701.10.37.70.1621.40.648064.14.63.50.0770.0900.0910.30.14.10.0860.40.655word格式.整理版.....六、实验数据处理1.计算变压器变比K=(KAB+KBC+KCA)/3=(3.97+4.05+3.99)/3=4.002.根据空载实验数据作空载特性曲线并计算激磁参数（1）绘制空载特性曲线a.UOL=f(IOL)b.P0=f(UOL)c.COSΦ0=f(UOL)word格式

6、.整理版.....（2）计算激磁参数由绘制的空载特性曲线得。UOL=UN时，IOL=0.049A,P0=2.69W则激磁参数：rm=P0/3I0φ2=2.69/(3*(0.049)2)=373.46ΩZm=UOφ/I0φ=UOL/√3IOL=55.08/(√3*0.049)=649.00ΩXm=√(Zm2-rm2)=√(649.002-373.462)=530.78Ω3.绘制短路特性曲线和计算短路参数（1）绘制短路特性曲线a.UKL=f(IKL)b.PK=f(IKL)word格式.整理版.....c.COSΦK=f(IKL)(2)计算短路参数由短路特性曲线得：IKL=IKN时，UKL=18

7、.74V,PK=9.13W则短路参数：rk=PK/3IKφ2=PK/3IKL2=9.13/(3*0.42)=19.02ΩZk=Ukφ/Ikφ=UKL/√3IKL=18.74/(√3*0.4)=27.05ΩXk=√(Zk’2-rk’2)=√(27.052-19.022)=19.23Ω折算到低压侧：Zk’=Zk/K2=27.05/4.002=1.69Ωrk’=rk/K2=19.02/4.002=1.19ΩXk’=Xk/K2=