井下設(shè)備的整定計(jì)算

井下設(shè)備的整定計(jì)算過(guò)流整定細(xì)則說(shuō)明〔含移變低壓側(cè)中過(guò)載長(zhǎng)延時(shí)保護(hù)電流整定按實(shí)際負(fù)載電流值行狀況，乘一需用系數(shù)。公式： I=K Iez式中： ——過(guò)載保護(hù)電流整定值，A；zIe A;K0.5~1?！埠谱兊蛪簜?cè)中最大負(fù)載電機(jī)的起動(dòng)電流，加其余電機(jī)的實(shí)際電流之和。公式： I=IQe+K Iez式中： I——短路保護(hù)電流整定值，A；zIQe——最大負(fù)載電機(jī)起動(dòng)電流，A;Ie ，A;0.5~1。電磁起動(dòng)器中電子保護(hù)器的過(guò)載電流Iz

整定以負(fù)載電機(jī)的額定電流為依據(jù)，依據(jù)掌握開(kāi)關(guān)的整定方式取其近似值。當(dāng)運(yùn)行中電流超過(guò)Iz

時(shí)，即視為過(guò)8Iz

值時(shí)，即視為短路，保護(hù)器瞬間動(dòng)作。1.5。公式：式中 相短路電流，A；I——饋電開(kāi)關(guān)短路電流整定值，A；z1.5——牢靠系數(shù)。81.2。公式：式中 相短路電流，A；I——饋電開(kāi)關(guān)短路電流整定值，A；z1.5——牢靠系數(shù)。高壓配電裝置，應(yīng)依據(jù)其保護(hù)干線中移動(dòng)高壓側(cè)過(guò)流整定值進(jìn)展整定。似值?！裁旱V工業(yè)出版社〕第一章其次抑制定。綜采工作面電氣整定計(jì)算〔一〕.移變的整定計(jì)算500KVA〔10KV→690V,14.5〕二次側(cè)過(guò)載整定電流：I/=K =0.75×1.15×577.4=498Azz e二次側(cè)短路保護(hù)電流：I=I+K =6×1.15×180+0.75×1.15×zz Qe e397.4=1585A 〔取皮帶機(jī)電機(jī)為干線最大負(fù)載〕折算至一次側(cè)過(guò)載整定電流：I/=498÷14.5=34AZ折算至一次側(cè)短路保護(hù)電流：I=1585÷14.5=109AZ1000KVA〔10KV→1200V,8.3〕二次側(cè)過(guò)載整定電流：I/=K =0.75×0.67×1020=513Azz e二次側(cè)短路保護(hù)電流：I=I+K =6×0.67×500+0.75×0.67×zz Qe e520=2271A 〔取采煤機(jī)為干線最大負(fù)載〕折算至一次側(cè)過(guò)載整定電流：I/=513÷8.3=62AZ折算至一次側(cè)短路保護(hù)電流：I=2271÷8.3=274AZ800KVA〔10KV→1200V,8.3〕二次側(cè)過(guò)載整定電流：I/=K =0.75×0.67×730=367Azz e二次側(cè)短路保護(hù)電流：I=I+K =6×0.67×160+0.75×0.67×zz Qe e570=929A 〔取后溜機(jī)頭為干線最大負(fù)載〕折算至一次側(cè)過(guò)載整定電流：I/=367÷8.3=44AZ折算至一次側(cè)短路保護(hù)電流：I=929÷8.3=112AZ〔2〕.饋電開(kāi)關(guān)的整定計(jì)算回風(fēng)順槽饋電的過(guò)載整定計(jì)算:I/=K回風(fēng)順槽饋電的短路保護(hù)計(jì)算:I=IK

=0.75×1.15×101.4=87Ae=6×1.15×75+0.75×1.15×Qe e26.4=540A 〔取無(wú)極繩電機(jī)為干線最大負(fù)載〕運(yùn)輸順槽饋電的過(guò)載整定計(jì)算:I/=K運(yùn)輸順槽饋電的短路保護(hù)計(jì)算:I=I+K

=0.75×1.15×265.5=230Ae=6×1.15×180+0.75×1.15×Qe e85.5=1316A 〔取皮帶電機(jī)為干線最大負(fù)載〕名稱(chēng)型號(hào)電壓〔V)用途負(fù)載〔KW)過(guò)載電流〔A)短路電流〔A)器QBZ-80660回風(fēng)順電機(jī)1113104器QBZ-80N660電機(jī)11.413104起動(dòng)器QBZ-80N660液壓張電機(jī)45.544器QBZ-120N660機(jī)7586688起動(dòng)QJR-200660皮帶機(jī)90×22071656器電機(jī)起動(dòng)器QBZ-80N660張緊裝置電機(jī)7.5972起動(dòng)器QBZ-80660排水泵電機(jī)1315120起動(dòng)器QBZ-80660排水泵電機(jī)1315120起動(dòng)器QBZ-80660排水泵電機(jī)1517136起動(dòng)器QBZ-80660回柱絞車(chē)18.521168起動(dòng)器QBZ-80660回柱絞車(chē)18.521168組合QBZ-1600/1140(660)-61140采煤機(jī)5003352680開(kāi)關(guān)1140乳化液1125846721140乳化液2125846721140裂開(kāi)機(jī)110745921140轉(zhuǎn)載機(jī)1601078561140備用軟起組合QJR-4×400/1140(660)-41140后溜機(jī)頭1601078561140后溜機(jī)尾1601078561140前溜機(jī)頭1601078561140前溜機(jī)尾160107856起動(dòng)器QBZ-801140噴霧泵4530240起動(dòng)器QBZ-801140噴霧泵4530240(一〕.綜掘隊(duì)饋電的整定計(jì)算饋電過(guò)載整定電流：I/=K =0.75×1.15×180.5=156Azz e饋電短路保護(hù)電流：I=I+K =6×1.15×40+0.75×1.15×zz Qe e140.5=397A 〔取刮板機(jī)電機(jī)為干線最大負(fù)載〕〔二〕500KVA8.3〕二次側(cè)過(guò)載整定電流：I/=K =0.67×135=90Azz e

=I+K

=8×90=720Azz Qe e折算至一次側(cè)過(guò)載整定電流：I/=90÷8.3=11AZ折算至一次側(cè)短路保護(hù)電流：I=720÷8.3=87AZ名稱(chēng)型號(hào)電壓〔V)用途負(fù)載〔KW)過(guò)載電流〔A)短路電流〔A)饋電KBZ-4001140綜掘機(jī)13590720饋電KJZ-200660綜掘隊(duì)饋電180.5156397起動(dòng)器QBZ-80N660刮板機(jī)4046368起動(dòng)器QBZ-80N660刮板機(jī)4046368起動(dòng)器QBZ-80N660刮板機(jī)4046368起動(dòng)器QBZ-80N660刮板機(jī)4046368起動(dòng)器QBZ-80N660噴漿機(jī)5.56.552起動(dòng)器QBZ-80N660水泵1517136切換QBZ-2×660局扇風(fēng)2×1535280開(kāi)關(guān)120SF開(kāi)關(guān)120SF機(jī)四．機(jī)電機(jī)運(yùn)隊(duì)電氣整定計(jì)算(一〕.主井裝載硐室饋電的整定計(jì)算饋電過(guò)載整定電流：I/=K =0.75×1.15×41.5=36Azz e饋電短路保護(hù)電流：I=I+K =6×1.15×18.5+0.75×1.15×zz Qe e23=147A (二〕.副井二水平信號(hào)硐室饋電的整定計(jì)算饋電過(guò)載整定電流：I/=K =0.75×1.15×26=22Azz e饋電短路保護(hù)電流：I=I+K =6×1.15×18.5+0.75×1.15×zz Qe e7.5=134A 〕(三〕.軌道巷配電的整定計(jì)算D10饋電過(guò)載整定電流：I/=K =0.75×1.15×83=72Azz eD10饋電短路保護(hù)電流：I=I+K =6×1.15×45+0.75×1.15×zz Qe e38=343A (四〕.主皮帶機(jī)頭饋電的整定計(jì)算饋電過(guò)載整定電流：I/=K =0.75×1.15×111.5=96Azz e饋電短路保護(hù)電流：I=I+K =6×1.15×90+0.75×1.15×zz Qe e21.5=640A 〕(五〕.副井一水平信號(hào)硐室饋電的整定計(jì)算饋電過(guò)載整定電流：I/=K =0.75×1.15×40=35Azz e饋電短路保護(hù)電流：I=I+K =6×1.15×22+0.75×1.15×zz Qe e18.5=168A 〕(六〕.800KVA800KVA〔10KV→690V,14.5〕二次側(cè)過(guò)載整定電流：I/=K =0.75×1.15×302=260Azz e二次側(cè)短路保護(hù)電流：I

=I+K

=6×1.15×90+0.75×1.15×zz Qe e212=804A 〔取主皮帶機(jī)電機(jī)為干線最大負(fù)載〕折算至一次側(cè)過(guò)載整定電流：I/=260÷14.5=18AZ折算至一次側(cè)短路保護(hù)電流：I=804÷14.5=55AZ名位置型號(hào)電壓用途負(fù)載過(guò)載電短路電稱(chēng)〔V)〔KW)流〔A)流〔A)起動(dòng)QBZ-80660液壓站1517136器主油泵起液壓站動(dòng)QBZ-80660備用油1517136器泵起動(dòng)QBZ-806601#閘門(mén)2.55.544器電機(jī)起動(dòng)QBZ-806602#閘門(mén)2.55.544器起動(dòng)主井底裝載硐室QBZ-80660電機(jī)1#給煤5.56.552器機(jī)電機(jī)起動(dòng)QBZ-806602#給煤5.56.552器機(jī)電機(jī)起動(dòng)QBZ-806601#皮帶18.521168器電機(jī)起QBZ-806602#皮帶18.521168動(dòng)電機(jī)器起主井底動(dòng)QBZ-80660水泵電7.58.568器機(jī)起動(dòng)副井二水平信號(hào)硐QBZ-80660主油泵18.521168器室電機(jī)起動(dòng)QBZ-80660備用油18.521168器泵起軌道巷動(dòng)QBZ-80660絞車(chē)電2528.5228器機(jī)起動(dòng)軌道巷QBZ-806601#擋水4551408器墻水泵起動(dòng)QBZ-806602#擋水1315120器墻水泵起動(dòng)QBZ-80660液壓站18.521168器主油泵起液壓站副井一水動(dòng)平信號(hào)硐器室起

QBZ-80 660 備用油泵副井井

18.5 21 168動(dòng) QBZ-80 660 22 26 208底水泵器起 QBZ-80 660

副井井

22 26 208變電所高爆整定表動(dòng)變電所高爆整定表動(dòng)底水泵器軟主皮帶QJR-400 660 90104832起 電機(jī)起張緊裝動(dòng) QBZ-80 660 15 17 136置電機(jī)器主皮帶機(jī)起頭 皮帶制動(dòng) QBZ-80 660 1 5.5 44動(dòng)電機(jī)器起動(dòng)QBZ-80660除鐵器5.56.552器編名型號(hào)電壓用途負(fù)載過(guò)載電流短路電流號(hào)稱(chēng)〔V)〔KW)〔A)〔A)G1高爆PJG-10-50010000Ⅰ回總高爆3561167664G2高爆PJG-10-100100003#變壓器3021855G3高爆PJG-10-20010000主排水128021126G4高爆PJG-10-20010000主排水228021126G5高爆PJG-10-20010000綜采工作面2327.5140495G6高爆PJG-10-100100001#變壓器G7高PJG-10-50010000聯(lián)絡(luò)1．兩相短路電流計(jì)算公式1．兩相短路電流計(jì)算公式1式中：Id(2)——兩相短路電流，A1、——短路回路內(nèi)一相電阻、電抗值的總和，Ω；——依據(jù)三相短路容量計(jì)算的系統(tǒng)電抗值，Ω；爆G8高爆PJG-10-10010000備用G9高爆PJG-10-10010000備用編名型號(hào)電壓用途負(fù)載過(guò)載電流短路電流號(hào)稱(chēng)〔V)〔KW)〔A)〔A)G10高爆PJG-10-20010000軌道巷移變1351187G11高爆PJG-10-10010000主排水328021126G12高爆PJG-10-10010000備用G13高爆PJG-10-100100002#變壓器3021855G14高爆PJG-10-50010000Ⅱ回總高爆3561167664、、——高壓電纜的電阻、電抗值，Ω；——礦用變壓器的變壓比;、——礦用變壓器的電阻、電抗值，Ω；、——低壓電纜的電阻、電抗值，Ω；660V，Ue算。二.井下在用電纜、移變電阻、電抗工程162535507095電纜電阻電抗1.370.8700.6220.4350.3100.2290.0900.1200.1130.1070.1010.096變壓器電阻、電抗變壓器電阻、電抗工程500KVA800KVA1000KVA容量電阻0.00680.01350.0101電抗0.04270.10720.09311.井下變電所800KVA變壓器二次出口短路電流計(jì)算：1〕高壓電纜電阻、電抗：L=600m=0.6km查表得R=0.229Ω/km0X=O.O96Ω/km0此段高壓電纜電阻R=0.6×0.229=0.1374Ω1電抗X=0.6×0.096=0.0576Ω1800KVA查表得：R=0.0135Ω/km X=O.1072Ω/kmb b50MVAX=O.O288Ω/kmX=0.1374/14.52+0.0135=0.0142Ω=0.0576/14.52+0.1072+0.0288=0.1363Ω兩相短路電流：Id(2)=1

= =2517A4〕靈敏度系數(shù)校驗(yàn)：= =3.13>1.5 2.500KVA1〕高壓電纜電阻、電抗：3×70mm2L=650m=0.65km查表得R=0.310Ω/km X=O.101Ω/km0 0此段高壓電纜電阻R=0.65×0.310=0.2023Ω1電抗X=0.65×O.101=0.0657Ω1從井上至井下變電所高壓電纜電阻、電抗已算：高壓電纜總電阻R=0.1374+0.2023=0.3389Ωg總電抗X=0.0576+0.0657=0.1233Ωg500KVA查表得：R=0.0068Ω/km X=O.0427Ω/kmb bX=O.O288Ω/kmX=0.3389/14.52+0.0068=0.0084Ω=0.1233/14.52+0.0427+0.0288=0.0721Ω兩相短路電流：Id(2)=1靈敏度系數(shù)校驗(yàn)：

= =4752A= =3>1.5 滿(mǎn)足靈敏度要求。運(yùn)輸順槽電氣列車(chē)1000KVA移變二次出口短路電流計(jì)算：1〕高壓電纜電阻、電抗：3×50mm2L=800m=0.8km查表得R=0.435Ω/km X=O.107Ω/km0 0此段高壓電纜電阻R=0.8×0.435=0.348Ω1電抗X=0.8×O.107=0.0856Ω1從井上至500KVA高壓電纜電阻、電抗已算：高壓電纜總電阻R=0.3389+0.348=0.6869Ωg總電抗X=0.1233+0.0856=0.2089Ωg1000KVA查表得：R=0.0101Ω/km X=O.0931Ω/kmb bX=O.O288Ω/kmX=0.6869/8.32+0.0101=0.0201Ω=0.2089/8.32+0.0931+0.0288=0.1249Ω兩相短路電流：Id(2)=1靈敏度系數(shù)校驗(yàn)：

= =4743A= =2.1>1.5 滿(mǎn)足靈敏度要求。運(yùn)輸順槽電氣列車(chē)800KVA移變二次出口短路電流計(jì)算：1〕高壓電纜電阻、電抗：抗已算：X=0.2089Ωg g800KVA查表得：R=0.0135Ω/km X=0.1072Ω/kmb bX=O.O288Ω/kmX=0.6869/8.32+0.0135=0.0234Ω=0.2089/8.32+0.1072+0.0288=0.1390Ω兩相短路電流：Id(2)=1靈敏度系數(shù)校驗(yàn)：

= =4257A= =4.6>1.5 四．低壓系統(tǒng)短路電流計(jì)算〔一〕井下變電所800KVAId(2)計(jì)算1低壓電阻、電抗 L=50m=0.05km查表得R=0.870Ω/km X=O.120Ω/km0 0此段低壓電纜電阻R=0.05×0.870=0.0435Ω1電抗X=0.05×0.120=0.0060Ω1=0.0142+0.0435=0.0577Ω=0.1363+0.0060=0.1423Ω兩相短路電流：Id(2)=13)靈敏度系數(shù)校驗(yàn)：

= =2247A= =13.4>1.5 Id(2)計(jì)算1低壓電阻、電抗 L=320m=0.32km查表得R=0.310Ω/km X=O.101Ω/km0 0此段低壓電纜電阻R=0.32×0.310=0.0992Ω1電抗X=0.32×0.101=0.0323Ω1=0.0142+0.0992=0.1134Ω=0.1363+0.0323=0.1686Ω兩相短路電流：Id(2)=13)靈敏度系數(shù)校驗(yàn)：

= =1698A= =2.65>1.5 滿(mǎn)足靈敏度要求。Id(2)計(jì)算1低壓電阻、電抗 L=470m=0.47km查表得R=0.870Ω/km X=O.120Ω/km0 0此段低壓電纜電阻R=0.47×0.870=0.4089Ω1電抗X=0.47×0.120=0.0564Ω1=0.0142+0.4089=0.5509Ω=0.1363+0.0564=0.1927Ω兩相短路電流：Id(2)=13)靈敏度系數(shù)校驗(yàn)：

= =591A= =4.02>1.5 Id(2)計(jì)算1低壓電阻、電抗 L=80m=0.08km查表得R=0.870Ω/km X=O.120Ω/km0 0此段低壓電纜電阻R=0.08×0.870=0.0696Ω1電抗X=0.08×0.120=0.0096Ω1=0.0142+0.0696=0.0838Ω=0.1363+0.0096=0.0013Ω兩相短路電流：Id(2)=13)靈敏度系數(shù)校驗(yàn)：

= =4116A= =30.7>1.5 滿(mǎn)足靈敏度要求?！捕?00KVAId(2)計(jì)算1低壓電阻、電抗 L=300m+10m=0.31km查表得R=0.435Ω/km X=O.107Ω/km0 0此段低壓電纜電阻R=0.31×0.435=0.1349Ω1電抗X=0.31×0.107=0.0332Ω1=0.0084+0.1349=0.1433Ω=0.0721+0.0332=0.1053Ω兩相短路電流：Id(2)=13)靈敏度系數(shù)校驗(yàn)：

= =1940A= =2.8>1.2 Id(2)計(jì)算1低壓電阻、電抗 L=300m=0.3km查表得R=0.435Ω/km X=O.107Ω/km0 0此段低壓電纜電阻R=0.3×0.435=0.1305Ω1電抗X=0.3×0.107=0.0321Ω1=0.0084+0.1305=0.1389Ω=0.0721+0.0321=0.1042Ω兩相短路電流：Id(2)=13)靈敏度系數(shù)校驗(yàn)：

= =1987A= =45>1.2 Id(2)計(jì)算1低壓電阻、電抗 L=40m=0.04km查表得R=1.37Ω/km X=O.090Ω/km0 0此段低壓電纜電阻R=0.04×1.37=0.0548Ω1電抗X=0.04×0.090=0.0036Ω1=0.1389+0.0548=0.1937Ω=0.1042+0.0036=0.1078Ω兩相短路電流：Id(2)=13)靈敏度系數(shù)校驗(yàn)：

= =1556A= =15>1.2 Id(2)計(jì)算1低壓電阻、電抗 L=300m=0.3km查表得R=1.37Ω/km X=O.090Ω/km0 0此段低壓電纜電阻R=0.3×1.370=0.4110Ω1電抗X=0.3×0.090=0.0270Ω1=0.1937+0.4110=0.6047Ω=0.1078+0.0270=0.1348Ω兩相短路電流：Id(2)=13)靈敏度系數(shù)校驗(yàn)：

= =557A= =5.36>1.2 Id(2)計(jì)算1低壓電阻、電抗 L=22m=0.022km查表得R=0.435Ω/km X=O.107Ω/km0 0此段低壓電纜電阻R=0.022×0.435=0.0096Ω1電抗X=0.022×0.107=0.0024Ω1=0.0084+0.0096=0.0180Ω=0.0721+0.0024=0.0745Ω兩相短路電流：Id(2)=13)靈敏度系數(shù)校驗(yàn)：

= =4501A= =2.7>1.2 Id(2)計(jì)算1低壓電阻、電抗 L=355m=0.355km查表得R=1.37Ω/km X=O.090Ω/km0 0此段低壓電纜電阻R=0.355×1.370=0.4864Ω1電抗X=0.355×0.090=0.0320Ω1=0.0084+0.4864=0.4948Ω=0.0721+0.0320=0.1041Ω兩相短路電流：Id(2)=13)靈敏度系數(shù)校驗(yàn)：

= =682A= =5.7>1.2 Id(2)計(jì)算1低壓電阻、電抗 L=50m=0.05km查表得R=1.37Ω/km X=O.090Ω/km0 0此段低壓電纜電阻R=0.05×1.370=0.0685Ω1電抗X=0.05×0.090=0.0045Ω1=0.4948+0.0685=0.5633Ω=0.1041+0.0045=0.1086Ω兩相短路電流：Id(2)=13)靈敏度系數(shù)校驗(yàn)：

= =601A= =5>1.2 Id(2)計(jì)算1低壓電阻、電抗 L=100m=0.1km查表得R=1.37Ω/km X=O.090Ω/km0 0此段低壓電纜電阻R=0.1×1.370=0.1370Ω1電抗X=0.1×0.090=0.0090Ω1=0.5633+0.1370=0.7003Ω=0.1086+0.0090=0.1176Ω兩相短路電流：Id(2)=13)靈敏度系數(shù)校驗(yàn)：

= =486A= =3.6>1.2 滿(mǎn)足靈敏度要求。Id(2)計(jì)算1低壓電阻、電抗 L=80m=0.08km查表得R=1.37Ω/km X=O.090Ω/km0 0此段低壓電纜電阻R=0.08×1.370=0.1096Ω1電抗X=0.08×0.090=0.0072Ω1=0.7003+0.1096=0.8099Ω=0.1176+0.0072=0.1248Ω兩相短路電流：Id(2)=13)靈敏度系數(shù)校驗(yàn)：

= =421A= =2.5>1.2 10.3101Id(2)計(jì)算1低壓電阻、電抗 L=400m=0.4km查表得R=0.870Ω/km X=O.120Ω/km0 0此段低壓電纜電阻R=0.4×0.870=0.3480Ω1電抗X=0.4×0.120=0.0480Ω1=0.0084+0.3480=0.3564Ω=0.0721+0.0480=0.1201Ω兩相短路電流：Id(2)=13)靈敏度系數(shù)校驗(yàn)：

= =917A= =2.3>1.5 滿(mǎn)足靈敏度要求。〔三〕綜采1000KVA移變分支線路各點(diǎn)短路電流計(jì)算Id(2)計(jì)算1低壓電阻、電抗 L=330m=0.33km查表得R=0.229Ω/km X=O.096Ω/km0 0此段低壓電纜電阻R=0.33×0.229=0.0756Ω1電抗X=0.33×0.096=0.0317Ω1=0.0201+0.0756=0.0957Ω=0.1249+0.0317=0.1566Ω兩相短路電流：Id(2)=13)靈敏度系數(shù)校驗(yàn)：

= =3269A= =1.22>1.2 Id(2)計(jì)算1低