水轮发电机电磁计算单SFW3200

水轮发电机计算单发电机型号：设计时间:2011-10-2916:01:58序号名称变量结果单位序号名称一.基本数据额定数据1.101额定功率Pn2000(kW)1.102额定功率因素co旳n.81.103额定容量SN2500(kVA)1.104额定电压UN6300(V)1.105相电压Up3637.307(V)1.106额定电流IN229.114(A)1.107相电流Ip229.114(A)1.108额定转速nN750(r/min)1.109飞逸转速nr4(r/min)1.110额定频率fN50(Hz)1.111极数2p81.112相数M31.113飞轮力矩GD2737.895(kN.m)1.114无功功率Pr1500.0000(kW)1.115机械时间常数Tmec5686.403(s)1.115重量估算Gr5.645(t)定子铁芯和转子磁极铁芯尺寸1.201定子铁芯外径Dl173(cm)1.202定子铁芯内径Di132(cm)1.203定子槽宽度bs1.68(cm)1.204定子槽高度hs7.48(cm)1.205定子槽楔高度hk.5(cm)1.206定子线圈单边绝缘厚度&i.265(cm)1.207定子铁芯径向通风槽宽度及通风槽数bvnv9(cm)1.208无通风槽的定子铁芯长度l45(cm)1.209各段铁芯长度不相等时相邻通风槽的平均距离tv5.4(cm)定子绕组数据1.301定子槽数Z1081.302每极每相槽数q4.51.303每项并联支路数a1

1.304每槽有效导体数Ns61.305每支路电流Ia229.114(A)1.306定子线圈线规2.24x4.751.307定子槽电流Is1374.684(A)1.308电负荷A358.1979(A/cm)1.309绕组节距Y111.310短距系数B.8151.311每相串联匝数腳1081.312每支路有效导体截面积Ac61(mm)1.313定子绕组的电流密度J3.756(A/mm)1.314热负荷AJ1345.3913(A/cm.mm)1.315定子铁芯总长度lt54(cm)1.316定子绕组端部每半匝平均长度lE78.0079(cm)1.317定子绕组每匝平均长度lc264.016(cm)1.318定子绕组每相电阻r(15).082007 (Q)1.319定子绕组每相电阻r(75).101689 (Q)1.4励磁绕组数据1.404励磁绕组铜线线规af3.15(mm)1.405励磁绕组铜线线规bf22.4(mm)1.406励磁绕组铜线截面积Af70.56(mm)1.407励磁绕组每极匝数Wf53.51.408励磁绕组每极匝数长度（单排线圈）lcf199.5(cm)1.409励磁绕组电阻Rf(15).2123(Q)1.410励磁绕组电阻Rf(75).2633(Q)1.411励磁绕组电阻Rf(120).3015(Q)1.412励磁绕组电阻Rf(130).31 (Q)1.413极弧半径Rp56.7516(cm)2.106极靴宽度bp36(cm)2.126极靴高度hp5.5(cm)2.127极身宽度bm23.5(cm)2.128极身高度hm21(cm)1.5阻尼绕组数据1.401阻尼条节距t23.07(cm)1.402阻尼绕组槽开口宽度bsh3(mm)1.403阻尼绕组槽开口高度hsh3(mm)1.413每极阻尼条数nB71.414阻尼条直径dB14(mm)1.415圆阻尼条截面积AB1.5386(cm)1.416阻尼条长度lB73(cm)1.417阻尼环厚度aR10(mm)

1.418阻尼环宽度bR50(mm)1.419阻尼环截面积AR500(mm)1.420阻尼环平均直径DR1304(mm)1.421直轴阻尼绕组电阻（标幺值）RDd*.021.422交轴阻尼绕组电阻（标幺值）RDq*.0154二.空载磁势计算2.1磁路计算2.101定子齿顶处齿距t13.8378(cm)2.102极距n51.836(cm)2.103气隙6.8(cm)2.104比值6/n.01542.105比值6max/61.52.107极弧系数ap.6942.108定子1/3齿高处齿距t1/33.9828(cm)2.109定子1/2齿高处齿距t1/24.0553(cm)2.110定子齿顶处齿宽bt2.1578(cm)2.111定子1/3齿高处齿宽bt1/32.3028(cm)2.112定子1/2齿高处齿宽bt1/22.3753(cm)2.113定子轭高hj12.52(cm)2.114定子轭磁路长Lj62.9884(cm)2.115定子铁芯叠压系数KFE.942.116定子铁芯有效长度lef42.3(cm)2.117比值lt/n1.04172.118定子铁芯边缘段阶梯形高度a10(cm)2.119定子铁芯边缘段阶梯形宽度c10(cm)2.120定子铁芯计算长度Lt＇54(cm)2.121主极极靴长度lp54(cm)2.122主极极身长度lm54(cm)2.123主极极靴计算长度lp＇55.6(cm)2.124轴向气隙计算长度l054.8(cm)2.125计算气隙6＇.933(cm)2.129磁极压板厚度6p4.5(cm)2.130磁极铁芯计算长度lm＇58.5(cm)2.131磁极结构尺寸ap6.25(cm)2.132磁极结构尺寸dt3.8455(cm)2.133磁极结构尺寸cp12.8173(cm)2.134磁极结构尺寸nm15.148(cm)2.135定子齿重GFet633.1094(kg)2.136定子轭重GFej2164.694(kg)2.137磁极压板截面积Ap74.025(cm)2.138磁极铁芯截面积Am1378.98(cm)空载特性计算绕组基波短距系数绕组基波分布系数绕组基波短距系数绕组基波分布系数绕组基波系数基波磁通磁场波形系数极弧磁通系数空载额定电压时的每极磁通空载额定电压时极靴部分的磁通极靴上气隙的平均磁通密度定子1/3齿高处的磁通密度定子1/2齿高处的磁通密度定子轭的磁通密度定子齿的气隙系数定子铁芯径向通风槽的气隙系数转子阻尼绕组槽的气隙系数总气隙系数定子齿的磁位降定子轭的磁位降磁极漏磁系数极身根部磁通极身根部的磁通密度极靴的漏磁系数极身上部的磁通极身上部的磁通密度磁极的平均磁通密度磁极的磁位降转子轭与磁极接缝处的磁位降气隙磁位降额定电压下的空载磁位降定子绕组漏抗Kp1.9579Kd1.95626Kdp1.916屮1.1656(Wb)切.9858kA.9202.1632(Wb)屮入.1502(Wb)B6.7614(T)Bt1/31.6458(T)Bt1/21.5958(T)Bj1.5408(T)k611.1462k621.0728k631.0248k61.2601Ft1092.08(A)Fj2519.536(A)Zm1.1748屮m.1917(Wb)Bm1.3902(T)Zp1.0576屮p.173(Wb)Bp1.255(T)Bm1/21.3564(T)Fm1139.5(A)Fj2695.1(A)F614322.5224(A)Ff019768.7384(A)XZ.0637FkFk13561.8953(A)Kc1.4577XZt.1082屮/.1736(Wb)B6/.8099(T)三.负载磁势计算3.1短路和额定千伏安cos屮=0时的磁势计算短路电流为额定电流时的磁位降短路比定子绕组总漏抗cos屮=0时对应额定电压U屮的每极磁通气隙平均磁通密度

F6/15234.8449(A)Bj＇1.6389(T)Fj＇4383.9926(A)Bt1/31.7506(T)Ft1/31675.52(a)Zmz1.3056Zpz1.1008Bm＇1.6963(T)Bp＇1.4385(T)Bm1/21.6319(T)Fm＇2803.7(A)Fj2＇848.15(A)Z37595.7581(A)空气隙的磁位降定子轭的磁通密度定子轭的磁位降定子齿的磁通密度定子齿的磁位降磁极漏磁系数极靴的漏磁系数极身根部的磁通密度极身上部的磁通密度磁极的平均磁通密度磁极的磁位降转子轭与磁极接缝处的磁位降3.118额定千伏安.cos屮=0过励时的总磁位降用图解法确定额定负载时的磁势3.201额定励磁磁动势Ffn33018.0919(A)四.励磁数据4.01空载额定电压时的励磁电流If0184.7546(A)4.02额定负载时的励磁电流Ifo308.5803(A)4.03额定负载时励磁绕组的电流密度Jf4.3733(A/cm)4.04空载时励磁绕组的滑环电压Uf039.2234(V)4.05额定负载时励磁绕组的滑环电压UfN95.6599(V)4.06集电环上的励磁电压增长速度△Uf191.3198(V/s)4.07直流励磁机的额定电压Uf105.2259(V)4.08直流励磁机的额定电流If339.4383(A)4.09直流励磁机的额定功率Pf35.7177(kW)4.10励磁系统的顶置电压Ufmax191.3198(V)4.11直流励磁机的最大励磁电流Ifmax877.6251(A)4.12直流励磁机的瞬时最大功率Pfmax167.9071(kW)五.损耗和效率5.1空载损耗5.101空载额定电压时定子齿中铁耗PFet3.4261(kW)5.102空载额定电压时定子轭中铁耗PFej8.3511(kW)5.103空载额定电压时极靴表面附加损耗（叠片或实心磁极）PFepo2.8552(kW)5.104空载时总损耗PFe14.6324(kW)短路损耗

并联股线间的环流系数Kr.006272并联股线间的环流系数£.37498涡流损耗系数Ks.0105定子绕组费立德系数KF1.0168短路电流为额定电流时磁场三次谐波在定子齿中的磁通密度B32805.0193(T)短路电流为额定电流时磁场三次谐波在定子齿中引起的附加损耗Pt31.7286(kW)额定电流时定子绕组铜耗Pcu16.014(kW)额定电流时双层定子绕组铜耗Pcus.2686(kW)短路电流为额定电流时定子磁场中齿谐波在极靴表面及阻尼绕组中产生的附加损耗Ppt.1143(kW)短路电流为额定电流时定子绕组磁势中高次谐波在极靴表面产生的附加损耗Pkv.0558(kW)短路电流为额定电流时在定子此压板及端盖上的附加损耗Pad.2395(kW)短路电流为额定电流时的总损耗Pk18.4208(kW)5.2015.2025.2035.2045.2055.2065.2075.2085.2095.2105.2115.2125.3015.4015.4025.5015.5026.1016.1026.1036.1046.1056.106励磁损耗额定负载，额定电压额定功率因数时的励磁损耗Pcuf额定功率因数时的励磁损耗Pcuf25.6891(kW)机械损耗（摩擦损耗及通风损耗）风摩损耗Pfv11.4305(kW)总机械损耗（包括风摩损耗）Pmec51.4305(kW)5.5效率总损耗z84.4837(kW)发电机额定负载时的效率n95.947六.温度计算6.1定子温度计算铁耗在定子内圆产生的单位热负载W1.7241(W/cm)铜耗在定子内圆产生的单位热负载W2.342(W/cm)铜耗在线圈表面产生的单位热负载W3.0679(W/cm)铁芯对空气的温升0Fe33.8543(K)线圈绝缘温度降ei11.246(K)线圈端部表面对空气的温升0E24.9225(K)

6.107定子有效部分的最高温升0max45.1(K)6.108定子线圈对空气的平均温升0cu39.2131(K)6.2转子温度计算6.201励磁损耗在磁极线圈侧表面产生的单位热负载W2＇1.0985(W/cm)6.202转子线圈的电负荷A2868.8972(A/cm)6.203转子线圈的表面热系数W〃.0195(W/cm°C)6.204转子线圈对空气的温升0f56.3333(K)七.经济指标7.01发电机定子有效铁重GFe2797.8034(kg)7.02定子绕组铜重Gcu464.4031(kg)7.03励磁绕组铜重Gcuf536.2104(kg)7.04阻尼条重量GB55.9792(kg)7.05阻尼环重量GR36.4416(kg)7.06发电机有效铜重Gcut1093.0343(kg)7.07发电机单位容量有效铁重量gfe1.1191(kg)7.08发电机单位容量有铜铁重量gcu.1858(kg)八.电抗和时间常数的计算8.1电抗的计算8.101定子绕组矩形波磁动势Fa12012.8686(At)8.102定子绕组直轴电枢反应系数Kad1.0538.103定子绕组电枢反应直轴磁动势Fad12649.550625(At)8.104直轴电枢反应电抗Xad.8831938.105定子交轴与直轴电枢反应基波磁通之比Kq.498.106交轴电枢反应电抗Xaq.4890468.107定子绕组漏抗Xz.06378.108直轴同步电抗Xd.9468938.109交轴同步电抗Xq.5527468.110极靴之间漏磁导入pl.4481658.111极身之间漏磁导入ml.7624778.112磁极端面之间漏磁导入mb.1486328.113磁极总漏磁导入m+p1.3592748.114瞬变过程磁极总漏磁导八1.0026048.115励磁绕组总电抗Xz21.0064728.116励磁绕组漏抗Xzf.1232798.117直轴瞬变电抗Xd＇.1718798.118交轴瞬变电抗Xq＇.5527468.119阻尼绕组直轴漏抗（开口槽）Xzd.079476

8.120阻尼绕组交轴漏抗XZq.0596078.121直轴超瞬变电抗Xd〃.0980628.122交轴超瞬变电抗Xq〃.1168318.123负序电抗（当短路时）X2.107