常用電氣計算

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1、變壓器容量計算表 名稱 組別額定功率輸入容量需要系數(shù)功率因數(shù)功率因數(shù)正切有功功率無功功率視在功率低壓額定電流10kV額定電流有功功率同期系數(shù)(0.80.9)無功功率同期系數(shù)(0.930.97)無功功率補(bǔ)償率用電設(shè)備Pe(kW)S(kV.A)KxcostgPjs(kW)Qjs(kvar)Sjs(kV.A)Ijs(A)Igs(A)KpKqqc1#照明及電熱344.000.750.800.75258.00193.50322.502#照明及電熱302.000.750.800.75226.50169.88283.13辦公及商住樓240.000.700.800.75168.00126.00210.00自動

2、扶梯30.000.600.501.7318.0031.1836.00廚房電力120.000.700.701.0284.0085.70120.00電梯112.000.400.501.7344.8077.6089.60防排煙風(fēng)機(jī)42.000.900.800.7537.8028.3547.25卷簾門48.000.600.701.0228.8029.3841.140.000.701.020.000.000.000.000.701.020.000.000.000.000.701.020.000.000.000.000.701.020.000.000.000.000.701.020.000.000.000

3、.000.701.020.000.000.000.000.701.020.000.000.000.000.701.020.000.000.00合計1238.00865.90741.581140.05同時系數(shù)0.740.90779.31704.501050.541596.140.900.95電容補(bǔ)償448.350.58電容補(bǔ)償后0.950.33779.31256.15820.331246.36功率損耗8.2041.02總計0.840.94787.51297.16841.711278.853016000kV.A容量變壓器10001443.3857.74變壓器負(fù)荷率0.75 0.850.84變壓器應(yīng)

4、選容量為:10001000kV.A無功補(bǔ)償容量為:448448 kvarkvar用電設(shè)備組名稱Kxcostg單獨(dú)傳動的金屬加工機(jī)床：小批生產(chǎn)的金屬冷加工機(jī)床0.120.160.51.73大批生產(chǎn)的金屬冷加工機(jī)床0.170.20.51.73小批生產(chǎn)的金屬熱加工機(jī)床0.20.250.550.61.511.33大批生產(chǎn)的金屬熱加工機(jī)床0.250.30.651.17鍛錘、壓床、剪床及其它鍛工機(jī)械0.250.61.33木工機(jī)械(木加工車間內(nèi))0.20.30.50.61.731.33液壓機(jī)0.30.61.33生產(chǎn)用通風(fēng)機(jī)0.750.850.80.850.750.62衛(wèi)生用通風(fēng)機(jī)0.650.70.80.75

5、泵、活塞型壓縮機(jī)、電動發(fā)電機(jī)組0.750.850.80.75球磨機(jī)、破碎機(jī)、篩選機(jī)、攪拌機(jī)等0.750.860.80.850.750.62電阻爐（帶調(diào)壓器或變壓器）：非自動裝料0.60.70.950.980.330.2自動裝料0.40.60.950.980.330.2干燥箱、加熱器等0.70.910工頻感應(yīng)電爐（不帶無功補(bǔ)償裝置）0.80.352.67高頻感應(yīng)電爐（不帶無功補(bǔ)償裝置）0.80.61.33焊接和加熱用高頻加熱設(shè)備0.50.650.71.02熔煉用高頻加熱設(shè)備0.80.850.80.850.750.62表面淬火電爐(帶無功補(bǔ)償裝置)：電動發(fā)電機(jī)0.650.71.02真空管振蕩器0.

6、80.850.62中頻電爐(中頻機(jī)組)0.650.750.80.75氫氣爐(帶調(diào)壓器或變壓器)0.40.50.850.90.620.48真空爐(帶調(diào)壓器或變壓器)0.550.650.850.90.620.48電弧煉鋼爐變壓器0.90.850.62電弧煉鋼爐的輔助設(shè)備0.150.51.73點焊機(jī)(非電子行業(yè))、縫焊機(jī)0.350.61.33電子行業(yè)點焊機(jī)0.20.61.33對焊機(jī)0.350.71.02自動弧焊變壓器0.50.51.73單頭手動弧焊變壓器0.350.352.68多頭手動弧焊變壓器0.40.352.68單頭直流弧焊機(jī)0.350.61.33多頭直流弧焊機(jī)0.70.71.02金屬、機(jī)修、裝

7、配車間、鍋爐房起重機(jī)(=25%)0.1 0.150.51.73鑄造車間用起重機(jī)(=25%)0.150.30.51.73聯(lián)鎖的連續(xù)運(yùn)輸機(jī)械0.650.750.88非聯(lián)鎖的連續(xù)運(yùn)輸機(jī)械0.50.60.750.88一般工業(yè)用硅整流裝置0.50.71.02電鍍用硅整流裝置0.70.80.75電解用硅整流裝置0.70.80.75紅外線干燥設(shè)備0.850.910電火花加工裝置0.50.61.33超聲波裝置0.70.71.02X光設(shè)備0.30.551.52電子計算機(jī)主機(jī)(中頻機(jī)組)0.60.70.80.75電子計算機(jī)外部設(shè)備0.40.50.51.73試驗設(shè)備(儀表為主)0.150.20.71.02試驗設(shè)備(

8、電熱為主)0.20.40.80.75磁粉探傷機(jī)0.20.42.29鐵屑加工機(jī)械0.40.750.88木工機(jī)械一般木材加工0.20.651.17篩砂機(jī)0.60.71.02稱量車0.150.51.73閥門0.180.51.73靜電除塵器0.80.80.75硒整流器0.70.71.02穩(wěn)壓器0.60.71.02插頭設(shè)備0.150.250.71.02排氣臺0.50.70.90.48老煉臺0.60.70.71.02陶瓷隧道窯0.80.90.950.33拉單晶爐0.70.750.90.48賦能腐蝕設(shè)備0.60.930.4真空浸漬設(shè)備0.70.950.33科研機(jī)構(gòu)的實驗室及實習(xí)工廠總的電力負(fù)荷0.10.20

9、.70.81.020.75大專院校的實驗室及實習(xí)工廠總的電力負(fù)荷0.10.20.70.81.020.75一般醫(yī)療插座0.20.80.75給水泵和排水泵0.80.850.62循環(huán)水泵、油泵0.80.80.75剪板機(jī)0.20.40.51.73振動機(jī)0.60.70.650.751.171.02卷揚(yáng)機(jī)0.550.60.80.75冷凍機(jī)0.650.750.80.75窗式空調(diào)器0.70.80.80.75洗衣房電力0.650.750.51.73廚房電力0.50.70.80.75實驗室電力0.20.40.70.81.020.75醫(yī)院電力0.40.50.80.75洗衣機(jī)0.40.51.73絞肉機(jī)、磨碎機(jī)0.70

10、.80.75照明用電設(shè)備Kx表建筑類別Kx建筑類別Kx 生產(chǎn)廠房(有天然采光)0.80.9 宿舍區(qū)0.60.8 生產(chǎn)廠房(無天然采光)0.91 醫(yī)院0.5 辦公樓0.70.8 食堂0.90.95 設(shè)計室0.90.95 商店0.9 科研樓0.80.9 學(xué)校0.60.7 倉庫0.50.7 展覽館0.70.8 鍋爐房0.9 旅館0.60.7照明用電設(shè)備cos、tg表光源類別costg光源類別costg 白熾燈、鹵鎢燈10 高壓鈉燈0.451.98 熒光燈（無補(bǔ)償）0.551.52 金屬鹵化物燈 0.40.612.291.29 熒光燈（有補(bǔ)償）0.90.48 鏑燈0.521.6 高壓水銀燈0.450.

11、65 1.981.16 氙燈0.90.48S9-M-10/0.4kV變壓器損耗計算Seb變壓器容量Pk空載有功損耗Pd短路有功損耗Sjs低壓側(cè)計算負(fù)荷Qk空載有功損耗Qd短路有功損耗Ik空載電流比Ud%阻抗電壓比Pb有功損耗Qb無功損耗300.130.60.00.841.22.840.10.8500.170.870.01.2522.540.21.3630.21.040.01.5122.522.442.41.5800.251.250.01.763.22.240.31.81000.291.50.02.142.140.32.11250.341.80.02.55240.32.51600.42.20.0

12、3.046.41.940.43.02000.482.60.03.681.840.53.62500.563.050.04.25101.740.64.33150.673.650.05.0412.61.640.75.04000.84.30.06161.540.86.05000.965.10.07201.441.07.06301.26.20.08.1928.351.34.51.28.28001.47.50.09.6361.24.51.49.610001.710.30.011451.14.51.711.012501.9512.80.012.556.2514.52.012.516002.414.50.01

13、4.4720.94.52.414.4已知設(shè)計數(shù)據(jù)中間計算結(jié)果計算結(jié)果SZ-M-10/0.4kV變壓器損耗計算Seb變壓器容量Pk空載有功損耗Pd短路有功損耗Sjs低壓側(cè)計算負(fù)荷Qk空載有功損耗Qd短路有功損耗Ik空載電流比Ud%阻抗電壓比Pb有功損耗Qb無功損耗2000.332.60.01.880.940.31.82500.43.050.02.25100.940.42.33150.483.650.02.5212.60.840.52.54000.574.30.02.8160.740.62.85000.685.10.03.5200.740.73.56300.816.20.04.09528.350.

14、654.50.84.18000.987.50.04.8360.64.51.04.810001.1510.30.05.5450.554.51.25.512501.35120.06.2556.250.54.51.46.316001.6814.50.08720.54.51.78.020001.9517.150.010900.54.52.010.025002.2820.30.012.5112.50.54.52.312.5已知設(shè)計數(shù)據(jù)中間計算結(jié)果計算結(jié)果SG10-10/0.4kV變壓器損耗計算Seb變壓器容量Pk空載有功損耗Pd短路有功損耗Sjs低壓側(cè)計算負(fù)荷Qk空載有功損耗Qd短路有功損耗Ik空載電流

15、比Ud%阻抗電壓比Pb有功損耗Qb無功損耗1000.41.880.00.840.840.40.81600.542.550.01.286.40.840.51.32000.623.10.01.680.840.61.62500.723.60.01.75100.740.71.83150.884.60.02.20512.60.740.92.24000.975.40.02.4160.641.02.45001.166.60.03200.641.23.06301.297.90.03.7837.80.661.33.88001.529.50.04480.561.54.010001.7611.40.05600.56

16、1.85.012502.0812.50.06.25750.562.16.316002.4413.90.08960.562.48.020003.3217.50.081200.463.38.02500420.30.0101500.464.010.0已知設(shè)計數(shù)據(jù)中間計算結(jié)果計算結(jié)果變壓器低壓側(cè)母線出三相短路電流估算變壓器額定容量Se（kVA）變壓器低壓的額定電壓Ue（kV）變壓器的阻抗電壓百分?jǐn)?shù) Uk（）變壓器低壓的額定電流Ie（A）變壓器低壓側(cè)母線出三相短路電流估算值Id（kA）6300.44.5909.326720.2摘自現(xiàn)代建筑 電氣技術(shù)設(shè)計文集Id=Ie/Uk%Ie=Se/（1.732xUe

17、）Id=100 xSe/(1.732xUexUk)其中：Se-變壓器額定容量 kVAIe-變壓器低壓的額定電流 AUe-變壓器低壓的額定電壓 VUk-變壓器的阻抗電壓百分?jǐn)?shù)Id-變壓器低壓側(cè)母線出三相短路電流 AUk含義可以理解為：1.當(dāng)變壓器的低壓側(cè)為額定電流時發(fā)生短路，高壓側(cè)電壓為額定電壓的百分?jǐn)?shù)2.10/0.4lkV變壓器低壓側(cè)三相短路電流為其 額定電流的1/Uk%倍，即：Id=Ie/Uk%3.110/10kV變壓器10kV側(cè)短路容量為其 額定容量的1/Uk%倍，即：Sd=Se/Uk%假定條件：1.10kV側(cè)線纜阻抗忽略不計，短路容量無窮大，這樣短路電流大小僅取決于前級變壓器容量的大小。

18、2.0.4kV側(cè)的變壓器保護(hù)主斷路器和低壓母線上的阻抗也 不加考慮，使低壓母線三相短路電流也僅取決于10/0.4kV 變壓器容量的大小。3.不考慮低壓側(cè)電動機(jī)和補(bǔ)償電容器等的反饋電流對短路 電流的正面影響。電動機(jī)啟動時母線電壓計算 Uqm1.經(jīng)驗公式估算法Uqm100（KiqSed+Sjh）/Sdm Sdm=100Seb/uk啟動電動機(jī)的全電壓啟動時的起動電流倍數(shù)Kiq啟動電動機(jī)的額定容量Sed（kVA）變壓器低壓側(cè)其他負(fù)荷容量Sjh（kVA）變壓器額定容量Seb（kVA）變壓器阻抗電壓uk（）變壓器低壓母線上的三相短路容量Sdm（kVA）電動機(jī)啟動電壓計算 Uqm31321503154787

19、56.9設(shè)計數(shù)據(jù)常規(guī)參數(shù)計算結(jié)果電動機(jī)啟動時端電壓計算 Uqd1.經(jīng)驗公式估算法Uqm100（KiqSed+Sjh）/SdmKiqPedLUxSdm=100Seb/uk啟動電動機(jī)的全電壓啟動時的起動電流倍數(shù)Kiq啟動電動機(jī)的額定容量Sed（kVA）變壓器低壓側(cè)其他負(fù)荷容量Sjh（kVA）變壓器額定容量Seb（kVA）變壓器阻抗電壓uk（）變壓器低壓母線上的三相短路容量Sdm（kVA）電動機(jī)啟動電壓計算 Uqm31321503154787518.9電動機(jī)額定功率Ped（kW）電動機(jī)供電線路長度 L（km）每千瓦公里單位電壓損失Ux（）1000.20.2設(shè)計數(shù)據(jù)常規(guī)參數(shù)計算結(jié)果無功功率補(bǔ)償率qc表

20、補(bǔ)償前cos1補(bǔ)償后cos20.700.750.800.820.840.860.880.900.920.940.302.160 2.298 2.430 2.482 2.534 2.586 2.640 2.695 2.7542.8170.351.656 1.795 1.926 1.978 2.030 2.083 2.137 2.192 2.2502.3130.401.271 1.409 1.541 1.593 1.645 1.698 1.752 1.807 1.8651.9280.450.964 1.103 1.235 1.287 1.339 1.391 1.445 1.500 1.5591.6

21、220.500.712 0.850 0.982 1.034 1.086 1.139 1.192 1.248 1.3061.3690.520.622 0.761 0.893 0.945 0.997 1.049 1.103 1.158 1.2171.2800.540.538 0.677 0.809 0.861 0.913 0.965 1.019 1.074 1.1331.1960.560.459 0.598 0.729 0.781 0.834 0.886 0.940 0.995 1.0531.1160.580.384 0.523 0.655 0.707 0.759 0.811 0.865 0.92

22、0 0.9791.0420.600.313 0.451 0.583 0.635 0.687 0.740 0.794 0.849 0.9070.9700.620.245 0.384 0.515 0.567 0.620 0.672 0.726 0.781 0.8390.9030.640.180 0.319 0.451 0.503 0.555 0.607 0.661 0.716 0.7750.8380.660.118 0.256 0.388 0.440 0.492 0.545 0.599 0.654 0.7120.7750.680.058 0.196 0.328 0.380 0.432 0.485

23、0.539 0.594 0.6520.7150.700.138 0.270 0.322 0.374 0.427 0.480 0.536 0.5940.6570.720.082 0.214 0.266 0.318 0.370 0.424 0.480 0.5380.6010.740.027 0.159 0.211 0.263 0.316 0.369 0.425 0.4830.5460.760.105 0.157 0.209 0.262 0.315 0.371 0.4290.4920.780.052 0.104 0.156 0.209 0.263 0.318 0.3760.4390.800.052

24、0.104 0.157 0.210 0.266 0.3240.3870.820.052 0.105 0.158 0.214 0.272 18.8170.840.053 0.106 0.162 0.2200.2830.860.054 0.109 0.1670.2300.880.055 0.1140.1770.900.0580.1210.920.0630.940.960.981.002.888 2.977 3.1802.385 2.473 2.6762.000 2.088 2.2911.693 1.781 1.9851.440 1.529 1.7321.351 1.440 1.6431.267 1

25、.356 1.5591.188 1.276 1.4791.113 1.201 1.4051.042 1.130 1.3330.974 1.062 1.2650.909 0.998 1.2010.847 0.935 1.1380.787 0.875 1.0780.729 0.817 1.0200.672 0.761 0.9640.617 0.706 0.9090.563 0.652 0.8550.511 0.599 0.8020.458 0.547 0.7500.406 0.495 0.6980.354 0.443 0.6460.302 0.390 0.5930.248 0.337 0.5400

26、.193 0.281 0.4840.134 0.223 0.4260.071 0.160 0.363利利用用系系數(shù)數(shù)法法平平均均照照度度計計算算表表序序號號房房間間名名稱稱照照度度標(biāo)標(biāo)準(zhǔn)準(zhǔn)燈燈具具光光源源類類型型光光通通量量（kW）房房間間尺尺寸寸維維護(hù)護(hù)系系數(shù)數(shù)長長度度（米米）寬寬度度（米米）1 1單單管管日日光光燈燈1x36x36W220022006 63 30.70.72 2節(jié)節(jié)能能日日光光燈燈1x13x13W590590363615150.70.73 3節(jié)節(jié)能能日日光光燈燈1x8x8W280280363615150.70.73 3單單管管日日光光燈燈1x30 x30W460046003

27、63615150.70.74 4雙雙管管日日光光燈燈2x202x20W17601760363615150.70.75 5金金屬屬鹵鹵素素?zé)魺?xZJD10 xZJD100W60006000454515150.70.76 6金金屬屬鹵鹵素素?zé)魺?xZJD15xZJD150W1150011500101020200.70.77 7金金屬屬鹵鹵素素?zé)魺?xZJD175xZJD175W140001400015156 60.660.668 8金金屬屬鹵鹵素素?zé)魺?xZJD25xZJD250W2050020500636344440.70.79 9金金屬屬鹵鹵素素?zé)魺?xZJD40 xZJD400W36000

28、36000101020200.70.71010金金屬屬鹵鹵素素?zé)魺?xZJD100 xZJD1000W110000110000101020200.70.71111白白熾熾燈燈1x60 x60W540540101020200.70.71212白白熾熾燈燈1x40 x40W297297101020200.70.71313白白熾熾燈燈1x100 x100W11001100101020200.70.71414高高壓壓汞汞燈燈1xGGY8xGGY80W34003400101020200.70.71515高高壓壓汞汞燈燈1xGGY125xGGY125W60006000101020200.70.71616高

29、高壓壓汞汞燈燈1xGGY175xGGY175W85008500101020200.70.71717高高壓壓汞汞燈燈1xGGY25xGGY250W1300013000101020200.70.71818高高壓壓汞汞燈燈1xGGY40 xGGY400W2300023000101020200.70.71919高高壓壓汞汞燈燈1xGGY100 xGGY1000W5850058500101020200.70.72020高高壓壓鈉鈉燈燈1xNG7xNG70W51605160101020200.70.72121高高壓壓鈉鈉燈燈1xNG10 xNG100W81808180101020200.70.72222高

30、高壓壓鈉鈉燈燈1xNG15xNG150W1335013350101020200.70.72323高高壓壓鈉鈉燈燈1xNG25xNG250W2314023140101020200.70.72424高高壓壓鈉鈉燈燈1xNG40 xNG400W4180041800101020200.70.72525高高壓壓鈉鈉燈燈1xNG100 xNG1000W106800106800101020200.70.72626高高壓壓鈉鈉燈燈1xNGG25xNGG250W1869018690101020200.70.72727高高壓壓鈉鈉燈燈1xNGG40 xNGG400W3115031150101020200.70.7

31、2828混混光光燈燈3600036000101020200.70.7燈燈數(shù)數(shù)n利利用用系系數(shù)數(shù)水水平平照照度度2 20.70119.78119.7854540.6024.7824.7854540.6011.7611.7654540.60193.2193.254540.6073.9273.9248480.60179.2179.210100.60241.5241.53 30.55169.4169.442420.70152.20152.2010100.6075675610100.602310231010100.6011.3411.3410100.606.2376.23710100.6023.123.110100.6071.471.410100.6012612610100.60178.5178.510100.6027327310100.6048348310100.601228.51228.510100.60108.36108.3610100.60171.78171.7810100.60280.35280.3510100.60485.94485.9410100.60877.8877.810100.602242.82242.810100.60392.49392.4910100.60654.15654.1510100.60756756