抽放泵站供电设计课程报告

1、供电设计报告地点：四阶段四片瓦斯泵站1. 负荷统计与变压器选择1.1负荷统计计算变压器负荷统计表设备名称电机台数设备型号额定功率(KW)额定电压(V)额定电流(A)额定功率因数cose额定效率e启动电流倍数备注M1(瓦斯抽放)12BEC50280.001140184.800.850.926.0M2(水泵)1LXB-7.5KW7.5011404.950.850.906.0功率Pe(KW)287.50平均功率因数cospj0.85M3(瓦斯抽放)12BEC50280.001140184.800.850.926.0M4(水泵)1LXB-7.5KW7.5011404.950.850.906.0功率Pe

2、(KW)287.50平均功率因数cospj0.85M5(水泵)1SB-7.57.506608.620.850.926.0M6(水泵)1SB-7.57.506608.620.850.926.0M7(水泵)1其它负荷160.00660166.000.890.927.0功率Pe(KW)175.00平均功率因数cospj0.89总计功率(KW)750.00公式参数说明： Kx 需用系数； cospj 平均功率因数； Pmax 最大一台电动机功率，KW； Sb 变压器需用容量，KVA； Pe 变压器所带设备额定功率之和，KW；1.2 变压器的选择根据供电系统的拟订原则，变压器的选择原理如下：1.2.1

3、变压器 T1： Kx = 0.800 cospj=(Picosei)/Pi = (280.000.85+7.500.85)/(280.00+7.50) = 0.8500 将Kx值和cospj值代入得 Sb = KxPe / cospj = 0.800287.50 / 0.85 = 270.59 KVA 选用KBSG2T-400/6/1.2 型号符合要求。1.2.2 变压器 T2： Kx = 0.800 cospj=(Picosei)/Pi = (280.000.85+7.500.85)/(280.00+7.50) = 0.8500 将Kx值和cospj值代入得 Sb = KxPe / cosp

4、j = 0.800287.50 / 0.85 = 270.59 KVA 选用KBSG2T-4006/1.2 型号符合要求。1.2.3 变压器 T3： Kx = 0.800 cospj=(Picosei)/Pi = (7.500.85+7.500.85+160.000.89)/(7.50+7.50+160.00) = 0.8866 将Kx值和cospj值代入得 Sb = KxPe / cospj = 0.800175.00 / 0.89 = 157.91 KVA 选用KBSG2T-400/6/0.69 型号符合要求。2. 设备选择2.1 高压电缆选择和校验:名称 型 号额定电压(V)长度(m)根

5、数允许载流量(A)负荷电流(A)功率和(KW)电压损失(%)C1MYJV22-356000160115835.673020.09C9MYJV22-356000160115835.673020.09C15MYP-3X35330020113819.541750.02公式参数说明：Pe 高压电缆所带的设备额定功率之和，KW；Kx 需用系数 ；Ue 高压电缆额定电压，KV；cospj 平均功率因数 ；pj 加权平均效率；Ij 经济电流密度，A/mm；n 同时工作的电缆根数；Id(3) 三相最大稳态短路电流，A；C 热稳定系数；tf 短路电流作用的假想时间，s；tan 平均功率因数对应的正切值，tan

6、= (1/cos)-1) ；R，X 电缆的每公里电阻和电抗(/KM)；Lg 电缆长度(KM) 。 C1(MYJV22-35-160m)： 长时负荷电流：Ig = (PeKx10) / (3Uecospjpj) =(3020.9610) / (360000.850.92) = 35.67 (A) 经济电流截面：Aj = Ig / (nIj) = 35.67/(12.5) = 14.27(mm) 热稳定截面：Amin = Id(3)(tf)/ C = 3158.9308(0.02) / 93.4 = 4.78(mm) 电压损失：Ug% = KxPeLg(R+Xtan)/(10Ue) = 0.963

7、020.16(0.6220+0.10500.620) / (106) = 0.09% C9(MYJV22-35-160m)： 长时负荷电流：Ig = (PeKx10) / (3Uecospjpj) =(3020.9610) / (360000.850.92) = 35.67 (A) 经济电流截面：Aj = Ig / (nIj) = 35.67/(12.5) = 14.27(mm) 热稳定截面：Amin = Id(3)(tf)/ C = 3325.7208(0.02) / 93.4 = 5.04(mm) 电压损失：Ug% = KxPeLg(R+Xtan)/(10Ue) = 0.963020.16

8、(0.6220+0.10500.620) / (106) = 0.09% C15(MYP-3X35-20m)： 长时负荷电流：Ig = (PeKx10) / (3Uecospjpj) =(1750.9510) / (333000.890.92) = 19.54 (A) 经济电流截面：Aj = Ig / (nIj) = 19.54/(12.5) = 7.82(mm) 热稳定截面：Amin = Id(3)(tf)/ C = 3325.7208(0.02) / 93.4 = 5.04(mm) 电压损失：Ug% = KxPeLg(R+Xtan)/(10Ue) = 0.951750.02(0.6830+

9、0.08400.512) / (103.3) = 0.02% 电压损失正常情况下不得超过7，故障状态下不超过10。2.2 低压电缆选择和校验:名称 型 号额定电压(V)长度(m)根数允许载流量(A)负荷电流(A)功率和(KW)电压损失(V)C3MYP-3X70114021215195.583020.19C6MYP -3X1611403018514.25220.89C4MYP-3X701140201215181.342801.78C2MYP-3X701140101215195.583020.96C5MYP-3X5011403117314.25220.05C14MYP -3X16114030185

10、14.25220.89C12MYP-3X701140301215181.342802.68C11MYP-3X70114021215195.583020.19C10MYP-3X701140201215195.583021.93C13MYP-3X5011403117314.25220.05C28MY-3X1666051858.397.500.08C27MY-3X1666021858.397.500.03C26MY-3X1666051858.397.500.08C25MY-3X1666013018516.78154.19C16MY-3X70660102215149.571750.38公式参数说明：P

11、e 电动机的额定功率，KW ；Ue 电动机的额定电压，V ；e 电动机的额定效率；cose 电动机的额定功率因数；Ub 变压器电压损失绝对值，V；Ur 变电器电阻压降，%；Ux 变电器电抗压降，%；Sb 选择变压器时计算的需用容量，KVA ；cospj 选择变压器时的加权平均功率；sinpj = (1-cospj)；Se 选择的变压器额定容量，KVA ；Pe 电缆带的所有设备额定功率之和，KW ；Kx 需用系数；tan 平均功率因数对应的正切值；Uel 低压电缆线路的额定电压，V；R0，X0 电缆的每公里电阻和电抗(/KM)；L 电缆长度(KM) 。(1) 变压器编号：T1 变电器电压损失计算

12、： Ub = (Sb/Se)(Urcospj + Uxsinpj)Ue2 = (270.59/400)(0.65%0.89+3.95%0.4626)1140 = 25.99 (V) C3(MYP-3X70-2m)： 长时负荷电流：Ig = (Pe10) / (3Ueecose) = (2210) /(311400.92000.8500)+(28010) /(311400.92000.8500) = 195.58 (A) 电缆电压损失： U = (KxPeL/(10Ue)(R0+X0tan)%Ue =(13020.002/(101.14)(0.3150+0.07800.620)%1140 =0.

13、19 (V) C6(MCPTJ-3X16-30m)： 长时负荷电流：Ig = (Pe10) / (3Ueecose) = (2210) /(311400.92000.8500) = 14.25 (A) 电缆电压损失： U = (KxPeL/(10Ue)(R0+X0tan)%Ue =(1220.03/(101.14)(1.4800+0.09000.620)%1140 =0.89 (V) C4(MYP-3X70-20m)： 长时负荷电流：Ig = (Pe10) / (3Ueecose) = (28010) /(311400.92000.8500) = 181.34 (A) 电缆电压损失： U =

14、(KxPeL/(10Ue)(R0+X0tan)%Ue =(12800.02/(101.14)(0.3150+0.07800.620)%1140 =1.78 (V) C2(MYP-3X70-10m)： 长时负荷电流：Ig = (Pe10) / (3Ueecose) = (2210) /(311400.92000.8500)+(28010) /(311400.92000.8500) = 195.58 (A) 电缆电压损失： U = (KxPeL/(10Ue)(R0+X0tan)%Ue =(13020.01/(101.14)(0.3150+0.07800.620)%1140 =0.96 (V) C5

15、(MCP-50-3m)： 长时负荷电流：Ig = (Pe10) / (3Ueecose) = (2210) /(311400.92000.8500) = 14.25 (A) 电缆电压损失： U = (KxPeL/(10Ue)(R0+X0tan)%Ue =(1220.003/(100.66)(0.4910+0.08100.620)%660 =0.05 (V)(2) 变压器编号：T2 变电器电压损失计算： Ub = (Sb/Se)(Urcospj + Uxsinpj)Ue2 = (270.59/400)(0.65%0.89+3.95%0.4626)1140 = 25.99 (V) C14(MCPT

16、J-3X16-30m)： 长时负荷电流：Ig = (Pe10) / (3Ueecose) = (2210) /(311400.92000.8500) = 14.25 (A) 电缆电压损失： U = (KxPeL/(10Ue)(R0+X0tan)%Ue =(1220.03/(101.14)(1.4800+0.09000.620)%1140 =0.89 (V) C12(MYP-3X70-30m)： 长时负荷电流：Ig = (Pe10) / (3Ueecose) = (28010) /(311400.92000.8500) = 181.34 (A) 电缆电压损失： U = (KxPeL/(10Ue)

17、(R0+X0tan)%Ue =(12800.03/(101.14)(0.3150+0.07800.620)%1140 =2.68 (V) C11(MYP-3X70-2m)： 长时负荷电流：Ig = (Pe10) / (3Ueecose) = (2210) /(311400.92000.8500)+(28010) /(311400.92000.8500) = 195.58 (A) 电缆电压损失： U = (KxPeL/(10Ue)(R0+X0tan)%Ue =(13020.002/(101.14)(0.3150+0.07800.620)%1140 =0.19 (V) C10(MYP-3X70-2

18、0m)： 长时负荷电流：Ig = (Pe10) / (3Ueecose) = (2210) /(311400.92000.8500)+(28010) /(311400.92000.8500) = 195.58 (A) 电缆电压损失： U = (KxPeL/(10Ue)(R0+X0tan)%Ue =(13020.02/(101.14)(0.3150+0.07800.620)%1140 =1.93 (V) C13(MCP-50-3m)： 长时负荷电流：Ig = (Pe10) / (3Ueecose) = (2210) /(311400.92000.8500) = 14.25 (A) 电缆电压损失：

19、 U = (KxPeL/(10Ue)(R0+X0tan)%Ue =(1220.003/(100.66)(0.4910+0.08100.620)%660 =0.05 (V)(3) 变压器编号：T3 变电器电压损失计算： Ub = (Sb/Se)(Urcospj + Uxsinpj)Ue2 = (157.91/400)(0.65%0.89+3.95%0.4626)660 = 6.26 (V) C28(MY-3X16-5m)： 长时负荷电流：Ig = (Pe10) / (3Ueecose) = (7.510) /(36600.92000.8500) = 8.39 (A) 电缆电压损失： U = (K

20、xPeL/(10Ue)(R0+X0tan)%Ue =(17.500.005/(100.66)(1.3700+0.09000.522)%660 =0.08 (V) C27(MY-3X16-2m)： 长时负荷电流：Ig = (Pe10) / (3Ueecose) = (7.510) /(36600.92000.8500) = 8.39 (A) 电缆电压损失： U = (KxPeL/(10Ue)(R0+X0tan)%Ue =(17.500.002/(100.66)(1.3700+0.09000.522)%660 =0.03 (V) C26(MY-3X16-5m)： 长时负荷电流：Ig = (Pe10

21、) / (3Ueecose) = (7.510) /(36600.92000.8500) = 8.39 (A) 电缆电压损失： U = (KxPeL/(10Ue)(R0+X0tan)%Ue =(17.500.005/(100.66)(1.3700+0.09000.522)%660 =0.08 (V) C25(MY-3X16-130m)： 长时负荷电流：Ig = (Pe10) / (3Ueecose) = (7.510) /(36600.92000.8500)+(7.510) /(36600.92000.8500) = 16.78 (A) 电缆电压损失： U = (KxPeL/(10Ue)(R0

22、+X0tan)%Ue =(1150.13/(100.66)(1.3700+0.09000.522)%660 =4.19 (V) C16(MY-3X70-10m-2根)： 长时负荷电流：Ig = (KxPe10)/(3Uepjcospj) = (0.817510)/(36600.890.92) =149.57 (A) 电缆电压损失： U = (KxPeL/(10Ue)(R0+X0tan)%Ue =(0.8175(0.01/2)/(100.66)(0.3150+0.07800.522)%660 =0.38 (V)2.3 高压配电箱的选择:名称 型 号额定电压(V)额定电流(A)额定热稳定电流(KA

23、)热稳定时间(s)额定断流容量(MVA)D1PBG-6/5060005012.5275D2BGP9L-100/6G600010012.5275D3BGP9L-100/6G600010012.5275公式参数说明：Pe 高压配电箱所带的设备额定功率之和，KW；Kx 需用系数 ；Ue 高压配电箱额定电压(V) ；cospj 平均功率因数 ；pj 加权平均效率 ；Ss 系统短路容量，MVA；Up 平均电压,V ；Iss 高压配电箱出口处短路电流，A；Its 热稳定电流，A ；tph 假想时间，s ；tts 高压配电箱热稳定时间，s ； 一般筛选高压配电箱的条件：额定电流 计算的长时负荷电流；额定热稳

24、定电流 计算的热稳定电流；额定断流容量 计算的容量。 D1(PBG-6/50)： 长时负荷电流：Ig = (PeKx10) / (3Uecospjpj) = (3020.9610) /(3 60000.850.92) =36 (A) 热稳定电流：Iss = Ss / (3Up) = 39.8106 /(360001.05) = 3160 (A) Its = Iss(tph / tts ) = 3160(0.02 / 2) = 0.32 (KA) 断流容量：Smax = 3UeIss = 360003160 = 32.8 (MVA) D2(BGP9L-100/6G)： 长时负荷电流：Ig = (

25、PeKx10) / (3Uecospjpj) = (3020.9610) /(3 60000.850.92) =36 (A) 热稳定电流：Iss = Ss / (3Up) = 39.8106 /(360001.05) = 3326 (A) Its = Iss(tph / tts ) = 3326(0.02 / 2) = 0.33 (KA) 断流容量：Smax = 3UeIss = 360003326 = 34.6 (MVA) D3(BGP9L-100/6G)： 长时负荷电流：Ig = (PeKx10) / (3Uecospjpj) = (1750.9510) /(3 60000.890.92)

26、 =17 (A) 热稳定电流：Iss = Ss / (3Up) = 39.8106 /(360001.05) = 3326 (A) Its = Iss(tph / tts ) = 3326(0.02 / 2) = 0.33 (KA) 断流容量：Smax = 3UeIss = 360003326 = 34.6 (MVA)2.4 设置综保:名称 型 号一次侧额定电压(V)一次侧额定电流(A)二次侧额定电压(V)二次侧额定电流(A)P3ZBZ-4.0/0.66/0.1336603.5013317.36P2ZBZ-4.0/0.66/0.1336603.5013317.363. 短路电流计算3.1 高压

27、短路电流的计算短路点电缆型号每公里电阻()每公里电抗()长度(m)根数电阻()电抗()d1C1(MYJV22-35)0.62200.105016010.09950.0168总阻抗()1.1724Id3(A)3102.36Id2(A)2686.72短路容量(MVA)33.85d4C9(MYJV22-35)0.62200.105016010.09950.0168总阻抗()1.1149Id3(A)3262.30Id2(A)2825.24短路容量(MVA)35.60d7C15(MYP-3X35)0.68300.08402010.01370.0017总阻抗()1.0955Id3(A)3320.33Id2

28、(A)2875.49短路容量(MVA)36.23 短路点：d1 电源短路容量：Sd = 34.47(MVA) 电源系统电抗：Xs = Up/Ss = 6.3/34.47 = 1.1514() 电缆电抗：Xg = (XiLi / 1000) = 0.1050160/1000 = 0.0168 () 电缆电阻：Rg = ( RiLi / 1000 ) = 0.6220160/1000 = 0.0995 () 总阻抗：Z = (Rg + (Xs + Xg) = (0.09952+(1.1514+0.0168) = 1.1724 () 三相短路电流：Id(3) = Up/(3Z) = 6300/(31

29、.1724) = 3102.36 (A) 二相短路电流：Id(2) = (3)/2Id(3) = (3)/23102.36 = 2686.72 (A) 短路容量：Sd = (3)Id(3)Up10-6 = 33102.36630010-6 = 33.85(MVA ) 短路点：d4 电源短路容量：Sd = 36.29(MVA) 电源系统电抗：Xs = Up/Ss = 6.3/36.29 = 1.0937() 电缆电抗：Xg = (XiLi / 1000) = 0.1050160/1000 = 0.0168 () 电缆电阻：Rg = ( RiLi / 1000 ) = 0.6220160/1000

30、 = 0.0995 () 总阻抗：Z = (Rg + (Xs + Xg) = (0.09952+(1.0937+0.0168) = 1.1150 () 三相短路电流：Id(3) = Up/(3Z) = 6300/(31.1150) = 3262.3 (A) 二相短路电流：Id(2) = (3)/2Id(3) = (3)/23262.3 = 2825.24 (A) 短路容量：Sd = (3)Id(3)Up10-6 = 33262.3630010-6 = 35.6(MVA ) 短路点：d7 电源短路容量：Sd = 36.29(MVA) 电源系统电抗：Xs = Up/Ss = 6.3/36.29 =

31、 1.0937() 电缆电抗：Xg = (XiLi / 1000) = 0.084020/1000 = 0.0017 () 电缆电阻：Rg = ( RiLi / 1000 ) = 0.683020/1000 = 0.0137 () 总阻抗：Z = (Rg + (Xs + Xg) = (0.01366+(1.0937+0.0017) = 1.0955 () 三相短路电流：Id(3) = Up/(3Z) = 6300/(31.0955) = 3320.33 (A) 二相短路电流：Id(2) = (3)/2Id(3) = (3)/23320.33 = 2875.49 (A) 短路容量：Sd = (3

32、)Id(3)Up10-6 = 33320.33630010-6 = 36.23(MVA )3.2 低压短路电流的计算短路点变压器编号电缆型号每公里电阻()每公里电抗()长度(m)根数电阻()电抗()d5T2C11(MYP-3X70)0.31500.0780210.00060.0002d5T2C12(MYP-3X70)0.31500.07803010.00940.0023d5T2C10(MYP-3X70)0.31500.07802010.00630.0016总阻抗()0.2368Id3(A)2925.55Id2(A)2533.60d6T2C10(MYP-3X70)0.31500.07802010

33、.00630.0016d6T2C11(MYP-3X70)0.31500.0780210.00060.0002d6T2C13(MYP-3X50)0.49100.0810310.00150.0002d6T2C14(MYP-3X16)1.48000.09003010.04440.0027总阻抗()0.2493Id3(A)2778.63Id2(A)2406.37d3T1C6(MYP-3X16)1.48000.09003010.04440.0027d3T1C5(MYP-3X50)0.49100.0810310.00150.0002d3T1C3(MYP-3X70)0.31500.0780210.00060

34、.0002d3T1C2(MYP-3X70)0.31500.07801010.00310.0008总阻抗()0.2495Id3(A)2776.50Id2(A)2404.52d2T1C4(MYP-3X70)0.31500.07802010.00630.0016d2T1C2(MYP-3X70)0.31500.07801010.00310.0008d2T1C3(MYP-3X70)0.31500.0780210.00060.0002总阻抗()0.2360Id3(A)2935.86Id2(A)2542.53d8T3C16(MY-3X70)0.31500.07801020.00160.0004总阻抗()0.

35、0649Id3(A)6141.75Id2(A)5318.91d9T3C26(MY-3X16)1.37000.0900510.00690.0005d9T3C16(MY-3X70)0.31500.07801020.00160.0004d9T3C25(MY-3X16)1.37000.090013010.17810.0117总阻抗()0.2174Id3(A)1832.46Id2(A)1586.96d10T3C16(MY-3X70)0.31500.07801020.00160.0004d10T3C25(MY-3X16)1.37000.090013010.17810.0117d10T3C27(MY-3X1

36、6)1.37000.0900210.00270.0002d10T3C28(MY-3X16)1.37000.0900510.00690.0005总阻抗()0.2200Id3(A)1810.48Id2(A)1567.92 短路点：d10 变压器编号：T3 电缆电抗：Xd = (XiLi / 1000) = 0.078010/1000/2+0.0900130/1000+0.09002/1000+0.09005/1000 = 0.0127 () 电缆电阻：Rd = ( RiLi / 1000 ) = 0.315010/1000/2+1.3700130/1000+1.37002/1000+1.37005

37、/1000 = 0.1893 () 总电抗：X = Xs/Kb+Xg/Kb+Xt+Xd = 0.997236180904523/8.6957+0.00168/8.6957+0.047+0.0127 = 0.0742 () 总电阻：R = Rg/Kb+Rt+Rd+0.01 = 0.01366/8.6957+0.0077+0.1893+0.01 = 0.2071 () 三相短路电流：Id(3) = U2e/(3(X+R) = 690/(3(0.0742+0.2071) = 1810.48 (A) 二相短路电流：Id(2) = (3)/2Id(3) = (3)/21810.48 =1567.92 (

38、A) 短路点：d2 变压器编号：T1 电缆电抗：Xd = (XiLi / 1000) = 0.078020/1000+0.078010/1000+0.07802/1000 = 0.0025 () 电缆电阻：Rd = ( RiLi / 1000 ) = 0.315020/1000+0.315010/1000+0.31502/1000 = 0.0101 () 总电抗：X = Xs/Kb+Xg/Kb+Xt+Xd = 0.997236180904523/5+0.0168/5+0.1802+0.0025 = 0.2294 () 总电阻：R = Rg/Kb+Rt+Rd+0.01 = 0.09952/5+0

39、.0312+0.0101+0.01 = 0.0553 () 三相短路电流：Id(3) = U2e/(3(X+R) = 1200/(3(0.2294+0.0553) = 2935.86 (A) 二相短路电流：Id(2) = (3)/2Id(3) = (3)/22935.86 =2542.53 (A) 短路点：d3 变压器编号：T1 电缆电抗：Xd = (XiLi / 1000) = 0.090030/1000+0.08103/1000+0.07802/1000+0.078010/1000 = 0.0039 () 电缆电阻：Rd = ( RiLi / 1000 ) = 1.480030/1000+0.49103/1000+0.31502/1000+0.315010/1000 = 0.0497 () 总电抗：X = Xs/Kb+Xg/Kb+Xt+Xd = 0.997236180904523/5+0.0168/5+0.1802+0.0039 = 0.2308 () 总电阻：R = Rg/Kb+Rt+Rd+0.01 = 0.09952/5+0.0312+0.0497+0.01 = 0.0948 () 三相短路电流：Id(3) = U2e/(3(X+R) = 1200/(3(0.2308+0.0948) = 2776.5 (A) 二相短路电流：Id(2) = (3)/2Id