保安煤业井下计算整定一、短路电流的计算:............................................................................2二、15#采区变电所短路计算..................................................................2(一)开二队低压开关整定:..................................................4(二)综二队低压开关整定:..................................................7(三)综一队低压开关整定:................................................10(四)综采队低压开关整定:................................................13(五)开三队低压开关整定:................................................16(六)开三队、开六队、综一队低压开关整定:................19(七)充电硐室低压开关整定:....................................................20(八)主井装载硐室低压开关整定:.........................................20(九)开一队配风巷低压开关整定:......................................21(十)主井井底液压泵站低压开关整定:..............................21(十一)开六队15105高抽巷低压开关整定:......................22(十二)15#煤皮带大巷低压开关整定:................................22(十三)上仓皮带巷低压开关整定:......................................24(十四)开四队15#煤皮带大巷向西延伸低压开关整定:.25(十五)开一队15107高抽巷低压开关整定..........................27一、短路电流的计算:根据目前我《保安煤业初步设计》提供可知见:短路计算系统图和短路计算等值电路图。短路参数计算结果表短路点最大运行方式最小运行方式X*minId(3)(kA)ic(kA)Sd(3)(MVA)X*maxId(3)(kA)Sd(3)(MVA)d15.59482.797.11178.76.90732.26144.8d213.09486.99517.876.414.40736.3669.4d315.01386.115.5666.616.32635.6161.3二、15#采区变电所短路计算高压(6KV)短路电流的计算:所经线路:中央变电所--------------15#煤采区变电所1、求电源电抗Xy:由设计提供短路容量为Sd=61.3(MVA),Up=6300(V),根据公式:Xy=Up2/Sd=63002/61.3×106=0.6475()2、线路阻抗:(1)、中央配电室到采区变电所电缆的阻抗:已知MYJV22—3.6/63×240电缆R=0.089Ω/kmX=0.06Ω/km;L=860mR1=0.089×0.86=0.07654Ω;X1=0.06×0.86=0.0516Ω3、计算高压短路电流:计算do点短路电流:已知:Up=6300(V),根据公式Id0(2=Up/(2×ΣR2+ΣX2)ΣRo=Ro×L10=0.089×0.86=0.07654Ω;ΣXo=Xx+X0×L10=0.6475+0.86×0.06=0.6991Ω()则:Id0(2)=Up/(2×ΣRo2+Σxo2)=6300/(2×0.076542+0.69912)=4479(A)则:Id0(3)=Up/(1.15×ΣRo2+Σxo2)=6300/(1.15×0.076542+0.69912)=7789(A)3.1变电所干式变压器(动力)型号:KBSG—500/6/0.693Ie=416.6AXb=0.038ΩRb=0.006Ω;求电源(660V)电抗Xy:由设计提供短路容量为Sd=61.3(MVA),Up=6300(V),根据公式:Xy=Up2/Sd=6902/61.3×106=0.0078()干变二次侧短路电流:R总=0.07654/8.72+0.006=0.007ΩX总=0.86×0.06/8.72+0.038+0.0078=0.046ΩId0(2)=22Ue2()()RX=2269020.0070.046=7419A3.2变电所干式变压器(风机)KBSG—630/6/0.69Rb=0.0048ΩXb=0.0378Ω干变二次侧短路电流:R总=0.07654/8.72+0.0048=0.0058ΩX总=0.86×0.06/8.72+0.0378+0.0078=0.046ΩId0(3)=22Ue2()()RX=2269020.00580.046=7443A(一)开二队低压开关整定:变压器(动力)型号:KBSGZY—630/6/0.69Rb=0.0056ΩXb=0.0415Ω;电缆:MYPTJ-3.6/63*35+3*16/3+JSXL=0.075ΩRL=0.588ΩL=680M;MYP-0.38/0.663*70+1*25XL=0.078ΩRL=0.315ΩL=1000M;求电源(660V)电抗Xy:由设计提供短路容量为Sd=61.3(MVA),Up=6300(V),根据公式:Xy=Up2/Sd=6902/61.3×106=0.0078()干变二次侧短路电流:R总=(0.07654+0.588*0.68)/8.72+0.0415+0.315*1.0=0.3254ΩX总=(0.86×0.06+0.68*0.075)/8.72+0.0056+0.078*1.0+0.0078=0.1ΩId0(2)=22Ue2()()RX=2269020.32540.1=1013AA、动力部分1、开二队KBSGZY-630/6/0.69移变二次总开关整定ΣPe=277.9kwKr=0.286+0.714×Pmax/ΣPe=0.286+0.714×80/277.9=0.49Kr取0.7过载:Iz=Kr×ΣPe×1.15=0.7×277.9×1.15=224A取Iz=250A短路:Id=IQe+KrΣIe=90×6+0.7×1.15x197.9=699A取I2=840A2、综采队总开关(KBZ-400/660)整定ΣPe=94.8kwKr=0.286+0.714×Pmax/ΣPe=0.286+0.714×45/94.8=0.62Kr取0.7过载:Iz=Kr×ΣPe×1.15=0.7×94.8×1.15=76A取Iz=150A短路:Id=IQe+KrΣIe=52×6+0.7×1.15x49.8=352A取I2=350A3、皮带机分路开关(KBZ-200/660)整定ΣPe=183.1kwKr=0.286+0.714×Pmax/ΣPe=0.286+0.714×80/183.1=0.6Kr取0.6过载:Iz=Kr×ΣPe×1.15=0.6×183.1×1.15=126A取Iz=130A短路:Id=IQe+KrΣIe=90×6+0.6×1.15x103.1=611A取I2=700A4、绞车分路开关(KBZ-200/660)整定ΣPe=95.6kwKr=0.286+0.714×Pmax/ΣPe=0.286+0.714×25/95.6=0.47Kr取0.47过载:Iz=Kr×ΣPe×1.15=0.47×95.6×1.15=51.6A取Iz=50A短路:Id=IQe+KrΣIe=28×6+0.6×1.15x70.6=217A取I2=230A5、开二队KBSGZY-630/6/0.69移变二次总开关整定ΣPe=283kwKr=0.286+0.714×Pmax/ΣPe=0.286+0.714×75/283=0.48过载:Iz=Kr×ΣPe×1.15=0.48×283×1.15=156A取Iz=200A短路:Id=(3-5)×Iz=3.5×200=700A取I2=700A6、移动二次总开关整定ΣPe=283kwKr=0.286+0.714×Pmax/ΣPe=0.286+0.714×75/283=0.48过载:Iz=Kr×ΣPe×1.15=0.48×283×1.15=156A取Iz=150A短路:Id=(3-5)×Iz=3.5×200=700A取I2=700A7、正巷开关整定ΣPe=95kwKr=0.286+0.714×Pmax/ΣPe=0.286+0.714×40/95=0.59过载:Iz=Kr×ΣPe×1.15=0.59×95×1.15=64A取Iz=80A短路:Id=IQe+KrΣIe=44×6+0.6×1.15x55=301A取I2=370A8、副巷开关整定ΣPe=188kwKr=0.286+0.714×Pmax/ΣPe=0.286+0.714×75/188=0.57过载:Iz=Kr×ΣPe×1.15=0.57×188×1.15=123A取Iz=110A短路:Id=IQe+KrΣIe=85×6+0.6×1.15x113=587.9A取I2=650A较验:Idmin/I2=1013/650=1.561.5(合格)9、皮带机开关(QBZ-200/660)整定ΣPe=80kw过载:Iz=Kr×ΣPe×1.15=1×80×1.15=92A取Iz=90A10、皮带机张紧开关(QBZ-80/660)整定ΣPe=7.5kw过载:Iz=Kr×ΣPe×1.15=1×7.5×1.15=8.63A取Iz=8A11、照明综保08027#(ZBZ-4/6/133M)整定短路:Id1=5A短路:Id2=10A12、调度绞车开关(QBZ-80/660)整定ΣPe=11.4kw过载:Iz=Kr×ΣPe×1.15=1×11.4×1.15=13.11A取Iz=13A13、调度绞车开关(QBZ-80/660)整定ΣPe=25kw过载:Iz=Kr×ΣPe×1.15=1×25×1.15=28.75A取Iz=28A14、刮板机开关(QBZ-80/660)整定ΣPe=40kw过载:Iz=Kr×ΣPe×1.15=1×40×1.15=46A取Iz=44A15、侧装机开关(QBZ-80/660)整定ΣPe=33kw过载:Iz=Kr×ΣPe×1.15=1×33×1.15=37.95A取Iz=36A16、钻机开关(QBZ-200/660)整定ΣPe=75kw过载:Iz=Kr×ΣPe×1.15=1×75×1.15=86.5A取Iz=85A17、钻机开关(QBZ-80/660)整定ΣPe=22kw过载:Iz=Kr×ΣPe×1.15=1×22×1.15=25.3A取Iz=24AB、风机开关部分1、风机多回路开关(QBZ-4*120/660)整定ΣPe=2*45kw过载:Iz=Kr×ΣPe×1.15=1×45×1.15=51.75A取Iz=51A短路:Iz=7×ΣPe×1.15=7×45×1.15=362.25A取Iz=360A2、风机多回路开关(KBZ-200/660)整定ΣPe=180kwKr=0.4+0.6×Pmax/ΣPe=0.4+0.6×90/180=0.7Kr取0.7过载:Iz=Kr×ΣPe×1.15=0.7×180×1.15=144.9A取Iz=150A短路:Id=(4-5)×Iz=4×160=640A取I2=700A(二)综二队低压开关整定:变压器(动力)型号:KBSGZY—630/6/0.69Xb=0.0056ΩRb=0.00415Ω;电缆:MYPTJ-3.6/63*35+3*16/3+JSXL=0.075ΩRL=0.588