綜掘工作面供電設(shè)計說明書

綜掘工作面供電設(shè)計一、綜掘工作面供電設(shè)計說明書3054936.84.2EPJ-120971設(shè)計寬度5.2米，承受一臺EPJ-120990.2米，設(shè)計寬度4.2米，承受一臺EPJ-120掘。3059504#高壓開關(guān)供電，軌道巷掘進工作面的全部機電設(shè)備由一臺KBSGZY-630KVA電，膠帶巷、尾巷全部機電設(shè)備由一臺KBSGZY-1000KVA型移變供電。軌道巷、膠帶巷及尾巷設(shè)備型號及供電狀況詳見《305掘進工作面供電系統(tǒng)圖》和《305二、掘進工作面設(shè)備選型1、掘進機EBJ-120TP掘進機主要技術(shù)參數(shù)：機長：8.6米 可掘巷道斷面：9-18m2最大可掘高度：3.75m ：5m供電電壓：660V 總功率：190KW2、可伸縮皮帶機SSJ-800/2X55運輸力量：400T/H 帶速：2m/S 帶寬：800mm3、刮板運輸機主要技術(shù)參數(shù)：輸送力量：150T/H 三、掘進工作面供電設(shè)備選型1、變壓器容量選擇305EBJ-120TP190KW，SSJ-800/2X55110KW:

S=∑P

*krncos￠∑P=P +Pn 掘進機 運輸機=190+110=300KW需用系數(shù)： Kr=0.5〔掘進〕平均功率因素：cos￠=0.7〔掘進〕S=∑PN*kr =300*0.5cos￠ 0.7

=214KVA依據(jù)實際條件軌道巷選用一臺KBSGZY-630/10/0.69KV電站供電。305EBJ-120TP掘進機功率190KW膠帶巷、尾巷各一臺，SSJ-800/2X55110KWS=∑PN*krcos￠∑P=P +P +P+Pn 掘進機

運輸機

刮板 650皮帶=190*2+110*2+40*2+7.5*3=702.5KW需用系數(shù)：Kr=0.5〔掘進〕平均功率因素：cos￠=0.7〔掘進〕S=∑PN*kr =702.5*0.5cos￠ 0.7

=502KVA動變電站供電。2、采區(qū)變電所高壓開關(guān)的選擇依據(jù)用電負荷額定電流選擇高開3UI 3U

41A3103103、電纜選擇高壓電纜選擇41A。MYPTJ-6/10kV-3*50＋3*16/3＋JS高壓礦用橡套電纜載流量198A，符合要求。低壓電纜選擇依據(jù)負荷狀況，由兩臺移變分別為三條巷道的設(shè)備供電，一臺KBSGZY-1000/10/0.69①軌道巷：供軌道巷掘進機電纜的選擇：p3Ucos33Ucos30.660.7

190

237AMYP-3*95+1*35260A，考慮電MYP-3*95+1*35蔽電纜。供軌道巷皮帶主電纜的選擇：P3Ucos33Ucos30.660.7

110

137AMYP-3*70+1*25215A，考慮電MYP-3*70+1*25蔽電纜。②膠帶巷、尾巷：從KBSGZY-1000/10/0.693Ucos掘進機33Ucos掘進機30.660.7

190

237AMYP-3*95+1*35260A，考慮電纜長時允許通過電流和機械強度，打算電纜選用MYP-3*95+1*35屏蔽電纜。供膠帶巷掘進機電纜的選擇：3Ucos掘進機33Ucos掘進機30.660.7

190

237AMYP-3*95+1*35260A，考慮電MYP-3*95+1*35蔽電纜。供尾巷皮帶、40TP3UcosI3Ucos

P40T溜子

11040

30.6630.660.7MYP-3*70+1*25215A，考慮電MYP-3*70+1*25蔽電纜。80P3Ucos33Ucos30.660.7

110

137AMYP-3*50+1*16173A，考慮電MYP-3*50+1*16蔽電纜。膠帶巷主電纜選擇：I

4037.5110

216A3Ucos33Ucos30.660.7供膠帶巷皮帶的電纜：p3Ucos33Ucos30.660.7

2

137A考慮電纜長時允許通過電流和機械強度，打算選用173A。40T3UcosI3Ucos

40T

4030.6630.660.7考慮電纜長時允許通過電流和機械強度，打算選用113A。24305掘進工作面設(shè)備布置圖》四、短路電流計算〔一〕軌道巷短路電流計算KBSGZY-630/10/0.69變壓器二次出口的短路電流Id1計算變壓器二次電壓660V，取690V。容量630KVA，系統(tǒng)短路容量按119.7MVAXX

U2 10.52arS 119.7br

0.9211電纜長度：0.5KMRga=0.416*0.5=0.208ΩXga=0.081*0.5=0.0405Ω變壓器電阻、電抗Rb1=0.0018ΩXb1=0.0173Ω∑R=Rg÷K2b＋Rb2=0.208÷15.22+0.0018=0.0027Ω∑X=〔Xx+Xg〕÷K2b+Xb2=〔0.9211+0.0405〕÷15.22+0.0173=0.0215Ω2 (R)2 (R)2(X)2

=15935A饋電開關(guān)短路電流Id11計算膠帶巷KBZ-400型饋電開關(guān)電源側(cè)MYP-3*95+1*35型電纜的電阻、電抗，L=5MRo=0.230Ω/KMXo=0.075Ω/KMRz=0.230*0.005=0.00115ΩXz=0.075*0.005=0.000375Ω∑R=0.0027+0.00115=0.00385Ω∑X=0.0215+0.000375=0.021875Ω2 (R)2 (R)2(X)2

=155441AKBZ-400開關(guān)短路電流Id12計算KBZ-400MYP-3*95+1*3510MRo=0.230Ω/KMXo=0.075Ω/KMRz=0.230*0.01=0.0023ΩXz=0.075*0.01=0.00075Ω∑R=0.0027+0.0023=0.005Ω∑X=0.0215+0.00075=0.02225Ω2 (R)2 (R)2(X)2

=15132A〔2〕掘進機電機短路電流Id13計算MYP-3*95+1*35870MRo=0.230Ω/KMXo=0.075Ω/KMRz=0.230*0.87=0.2001ΩXz=0.075*0.87=0.06525ΩMYP-3*70+1*25L=100MRo=0.315Ω/KMXo=0.078Ω/KMRz2=0.315*0.1=0.0315ΩXz2=0.078*0.1=0.0078Ω∑R=0.0027+0.2001+0.0315=0.2343Ω∑X=0.0215+0.06525+0.0078=0.09455Ω2 (R)2 (R)2(X)2

=1366A〔4〕皮帶電機處短路電流Id14、Id15KBZ-400負荷側(cè)至接線盒之間MYP-3*70+1*25型電纜電阻、電抗，L=50MRo=0.315Ω/KMXo=0.078Ω/KMRz2=0.315*0.05=0.01575ΩXz2=0.078*0.05=0.0039ΩMYP-3*25+1*16型電纜電阻、電抗，L=10MRo=0.864Ω/KMXo=0.088Ω/KMRz3=0.864*0.01=0.00864ΩXz3=0.088*0.01=0.00088Ω∑R=0.0027+0.01575+0.00864=0.02709Ω∑X=0.0215+0.0039+0.00088=0.02628Ω2 (R)22 (R)2(X)2

=9139A〔二〕膠帶尾巷短路電流計算KBSGZY-1000/10/0.69變壓器二次出口的短路電流Id1計算690V1000KVA，系統(tǒng)短路容量按119.7MVAXX

U2 10.52arS 119.7br

0.9211電纜長度：0.82KMRga=0.416*0.82=0.34112ΩXga=0.081*0.82=0.06642Ω變壓器電阻、電抗Rb1=0.0027ΩXb1=0.0194Ω∑R=Rg÷K2b＋Rb2=0.34112÷15.22+0.0027=0.0042Ω∑X=〔Xx+Xg〕÷K2b+Xb2=〔0.9211+0.06642〕÷15.22+0.0194=0.0237Ω2 (R)2 (R)2(X)2

=14345AKBZ-400饋電開關(guān)短路電流Id21計算KBZ-400MYP-3*95+1*3510MRo=0.230Ω/KMXo=0.075Ω/KMRz=0.230*0.01=0.0023ΩXz=0.075*0.01=0.00075Ω∑R=0.0042+0.0023=0.0065Ω∑X=0.0237+0.00075=0.02445Ω2 (R)2 (R)2(X)2

=13636A尾巷掘進機電機短路電流Id22計算MYP-3*95+1*35950MRo=0.230Ω/KMXo=0.075Ω/KMRz=0.230*0.95=0.2185ΩXz=0.075*0.95=0.07125ΩMYP-3*70+1*25L=100MRo=0.315Ω/KMXo=0.078Ω/KMRz2=0.315*0.1=0.0315ΩXz2=0.078*0.1=0.0078Ω∑R=0.0042+0.0023+0.2185+0.0315=0.2565Ω∑X=0.0237+0.00075+0.07125+0.0078=0.1035Ω2 (R)2 (R)2(X)2

=1247AKBZ-400饋電開關(guān)短路電流Id213計算KBZ-400MYP-3*95+1*35100MRo=0.230Ω/KMXo=0.075Ω/KMRz=0.230*0.1=0.023ΩXz=0.075*0.1=0.0075Ω∑R=0.0042+0.023=0.0272Ω∑X=0.0237+0.0075=0.0312Ω2 (R)2 (R)2(X)2

=8333A膠帶巷掘進機電機短路電流Id214計算MYP-3*95+1*35922MRo=0.230Ω/KMXo=0.075Ω/KMRz=0.230*0.922=0.21206ΩXz=0.075*0.922=0.06915ΩMYP-3*70+1*25L=100MRo=0.315Ω/KMXo=0.078Ω/KMRz2=0.315*0.1=0.0315ΩXz2=0.078*0.1=0.0078Ω∑R=0.0042+0.023+0.21206+0.0315=0.27076Ω∑X=0.0237+0.0075+0.06915+0.0078=0.10815Ω2 (R)2 (R)2(X)2

=1183AKBZ-630型饋電開關(guān)處短路電流Id23MYP-3*95+1*3510MRo=0.230Ω/KMXo=0.075Ω/KMRz=0.230*0.01=0.0023ΩXz=0.075*0.01=0.00075ΩR =R

=0.0023*0.0023=0.00115Ωz1

Z11Z11

Z12Z12

0.00230.0023X =X

=0.00075*0.00075=0.000375Ωz1

Z11Z11

Z12Z12

0.000750.00075∑R=0.0042+0.00115=0.00535Ω∑X=0.0237+0.000375=0.024075Ω2 (R)2 (R)2(X)2

=13996A尾巷溜子電機處短路電流Id24KBZ-630MYP-3*70+1*25型電纜電阻、電抗，L=70MRo=0.315Ω/KMXo=0.078Ω/KMRz2=0.315*0.07=0.02205ΩXz2=0.078*0.07=0.00546ΩMYP-3*35+1*16型電纜電阻、電抗，L=50MRo=0.616Ω/KMXo=0.084Ω/KMRz1=0.616*0.05=0.0308ΩXz1=0.084*0.05=0.0042ΩMYP-3*25+1*16型電纜電阻、電抗，L=10MRo=0.864Ω/KMXo=0.088Ω/KMRz3=0.864*0.01=0.00864ΩXz3=0.088*0.01=0.00088Ω∑R=0.0042+0.00115+0.02205+0.0308+0.00864=0.06684Ω∑X=0.0237+0.000375+0.00546+0.0042+0.00088=0.034615Ω2 (R)2 (R)2(X)2

=4585A尾行皮帶電機處短路電流Id25、Id26MYP-3*50+1*16型電纜電阻、電抗，L=10MRo=0.448Ω/KMXo=0.081Ω/KMRz2=0.448*0.01=0.00448ΩXz2=0.081*0.01=0.00081ΩMYP-3*25+1*16型電纜電阻、電抗，L=10MRo=0.864Ω/KMXo=0.088Ω/KMRz1=0.864*0.01=0.00864ΩXz1=0.088*0.01=0.00088Ω∑R=0.0042+0.00115+0.02205+0.00448+0.00864=0.04052Ω∑X=0.0237+0.000375+0.00546+0.00081+0.00088=0.031225Ω2 (R)22 (R)2(X)2

=6745A40T溜子電機處短路電流Id27KBZ-630負荷側(cè)至接線盒 MYP-3*95+1*35型電纜電阻、電抗L=110MRo=0.230Ω/KMXo=0.075Ω/KMRz=0.230*0.11=0.0253ΩXz=0.075*0.11=0.00825ΩMYP-3*35+1*16L=40MRo=0.616Ω/KMXo=0.084Ω/KMRz=0.616*0.04=0.02464ΩXz=0.084*0.04=0.00336ΩMYP-3*25+1*16型電纜電阻、電抗L=10MRo=0.864Ω/KMXo=0.088Ω/KMRz=0.864*0.01=0.00864ΩXz=0.088*0.01=0.00088Ω∑R=0.0042+0.00115+0.0253+0.02464+0.00864=0.06393Ω∑X=0.0237+0.000375+0.00825+0.00336+0.00088=0.036565Ω2 (R)2 (R)2(X)2

=4684A650皮帶電機處短路電流Id28MYP-3*95+1*35L=55MRo=0.230Ω/KMXo=0.075Ω/KMRz=0.230*0.055=0.01265ΩXz=0.075*0.055=0.004125ΩMYP-3*25+1*16型電纜電阻、電抗，L=10MRo=0.864Ω/KMXo=0.088Ω/KMRz1=0.864*0.01=0.00864ΩXz1=0.088*0.01=0.00088ΩMYP-3*16+1*10型電纜電阻、電抗，L=10MRo=1.37Ω/KMXo=0.09Ω/KMRz3=1.37*0.01=0.0137ΩXz3=0.09*0.01=0.0009Ω∑R=0.0042+0.00115+0.0253+0.01265+0.00864+0.0137=0.06564Ω∑X=0.0237+0.000375+0.00825+0.004125+0.00088+0.0009=0.03823Ω2 (R)2 (R)2(X)2

=4542A80皮帶電機處短路電流Id29、Id210、MYP-3*50+1*16型電纜電阻、電抗，L=10MRo=0.448Ω/KMXo=0.081Ω/KMRz2=0.448*0.01=0.00448ΩXz2=0.081*0.01=0.00081ΩMYP-3*25+1*16型電纜電阻、電抗，L=10MRo=0.864Ω/KMXo=0.088Ω/KMRz1=0.864*0.01=0.00864ΩXz1=0.088*0.01=0.00088Ω∑R=0.0042+0.00115+0.0253+0.01265+0.00448+0.00864=0.05642Ω∑X=0.0237+0.000375+0.00825+0.004125+0.00081+0.00088=0.03814Ω2 (R)22 (R)2(X)2

=5066A五、低壓開關(guān)及變壓器的整定(一)軌道巷低壓開關(guān)及變壓器的整定:〔1〕皮帶開關(guān)整定3Ie=Pe/(3=110*103/(=113Aa、過負荷整定

*Ue*cos)3*660*0.85)3Iz14=Ie=113Ab、短路整定I/Z14=KIe=8*113=904A靈敏度校驗Id14÷I/z14=9139÷904=10.1>1.2 格(3)KBZ-4003I掘進機油泵及7.5KW=Pe/(3

*Ue*cos)=62.5*103/(=64A3I截割頭=Pe/(33=120*103/(3=124Aa、過負荷整定Iz1=∑Ie=64+124=188A

*660*0.85)3*Ue*cos )3*660*0.85)KBZ-400202Ab、短路整定I/z1=KIe+∑Ie=6*124+64=808A202A4808A用負荷側(cè)饋電開關(guān)處發(fā)生兩相短路電流進展校驗Id13÷I/z1=1366÷808=1.7>1.2 合格(3)KBZ-400a、過負荷整定Iz1=∑Ie=113=113AKBZ-400115Ab、短路整定I/z1=KIe+∑Ie=6*113=678A1156690A用負荷側(cè)饋電開關(guān)處發(fā)生兩相短路電流進展校驗Id14÷I/z1=9139÷690=13>1.2 合格(4〕KBSGZY-630/10/0.69a、過負荷整定Iz1=∑Ie=64+124+113=301A310Ab、短路整定I/z1=KIe+KX∑Ie=6*124+64+113=921A310A3930A靈敏度校驗，為保護變壓器，用變壓器低壓側(cè)發(fā)生短路進展校驗得Id1÷I/z1=15935÷930=17>1.5 合格作為低壓側(cè)末端發(fā)生短路的后備保護，用低壓側(cè)KBZ-400饋電開關(guān)處發(fā)生兩相短路電流進展校驗Id11÷I/z1=15132÷930=16.3>1.2 合格KBSGZY-630/10/0.69過負荷整定Iz1高壓=Iz1÷15.2=20.4A21A短路整定 I/z1高壓=I/z1低壓÷15.2=61.2A取高壓側(cè)額定電流21A的3倍，為63A(二)膠帶巷尾巷低壓開關(guān)及變壓器器整定:尾巷:溜子開關(guān)整定3Ie=Pe/(33=40*103/(3=41Aa、過負荷整定

*Ue*cos)*660*0.85)Iz24=Ie=41Ab、短路整定I/Z24=KIe=8*41=328A靈敏度校驗Id24÷I/z14=4585÷328=14>1.2 格皮帶開關(guān)整定3Ie=Pe/(3=110*103/(

*Ue*cos)3*660*0.85)3=113Aa、過負荷整定Iz25=Iz26=Ie=113Ab、短路整定I/Z25=I/Z26=KIe=8*113=904A靈敏度校驗Id25÷I/z25=6745÷904=7.5>1.2 格(3)KBZ-4003I掘進機油泵及7.5KW=Pe/(3

*Ue*cos)=62.5*103/(=64A3I截割頭=Pe/(33=120*103/(3=124Aa、過負荷整定Iz22=∑Ie=64+124=188A

*660*0.85)3*Ue*cos)3*660*0.85)KBZ-400202Ab、短路整定I/z22=KIe+∑Ie=6*124+64=808A202A4808A用負荷側(cè)饋電開關(guān)處發(fā)生兩相短路電流進展校驗Id22÷I/z22=1247÷808=1.5>1.2 合格膠帶巷：〔1〕40T3Ie=Pe/(3=40*103/(=41Aa、過負荷整定

*Ue*cos)3*660*0.85)3Iz27=Ie=41Ab、短路整定I/Z27=KIe=8*41=328A靈敏度校驗Id27÷I/z27=4684÷328=12.3>1.2 格〔2〕650Ie650皮帶=Pe/(=3*7.5*103/(=23Aa、過負荷整定

*Ue*cos)33*660*0.85)33Iz28=Ie650=23Ab、短路整定I/Z28=KIe=8*23=184A靈敏度校驗Id28÷I/z28=4542÷184=25>1.2 〔3〕803Ie=Pe/(3=110*103/(=113Aa、過負荷整定

*Ue*cos)3*660*0.85)3Iz29=Iz210=Ie=113Ab、短路整定I/Z29=I/Z210=KIe=8*113=904A靈敏度校驗Id29÷I/z29=5066÷904=5.6>1.2 (3)KBZ-4003I掘進機油泵及7.5KW=Pe/(3

*Ue*cos)=62.5*103/(=64A3I截割頭=Pe/(33=120*103/(3=124Aa、過負荷整定Iz213=∑Ie

*660*0.85)3*Ue*cos)3*660*0.85)=64+124=188AKBZ-400202Ab、短路整定I/z213=KIe+∑Ie=6*124+64=808A202A4808A用負荷側(cè)饋電開關(guān)處發(fā)生兩相短路電流進展校驗Id214÷I/z213=1183÷808=1.5>1.2 合格(3KBZ-630a、過負荷整定Iz=∑Ie=113*2+41*2+23=331AKBZ-630331Ab、短路整定I/z23=KIe+∑Ie=6*113+113+41*2+23=896A331A3993A用負荷側(cè)饋電開關(guān)處發(fā)生兩相短路電流進展校驗Id29÷I/z23=5066÷993=5.1>1.2 合格KBSGZY-1000/10/0.69a、過負荷整定Iz2=∑Ie=124*2+64*2+41*2+113*2+23=707A710Ab、短路整定I/z2=KIe+KX∑Ie=6*124+124+64*2+41*2+113*2+23=1327A710A21420A靈敏度校驗，為保護變壓器，用變壓器低壓側(cè)發(fā)生短路進展校驗得Id2÷I/z2=14345÷1420=10>1.5 合格短路電流進展校驗Id23÷I/z1=8333÷1420=5.9>1.2 格KBSGZY-1000/10/0.69過負荷整定Iz1高壓=Iz1÷15.2=47A47A短路整定 I/z1高壓=I/z1低壓÷15.2=88A取高壓側(cè)額定電流47A的2倍，為94A六、變電所高壓開關(guān)的整定a、過負荷整定Ig=∑IeNcosNcos3100.7=3100.7=83A200A0.6120Ab、短路整定考慮，其高壓側(cè)動作電流計算值為：I

12461242113364324I” ST g KT

15.2

=102A200A1200A。靈敏度校驗，