综掘工作面供电设计说明书

综掘工作面供电设计一、综掘工作面供电设计说明书3054936.84.2EPJ-120971设计宽度5.2米，承受一台EPJ-120990.2米，设计宽度4.2米，承受一台EPJ-120掘。3059504#高压开关供电，轨道巷掘进工作面的全部机电设备由一台KBSGZY-630KVA电，胶带巷、尾巷全部机电设备由一台KBSGZY-1000KVA型移变供电。轨道巷、胶带巷及尾巷设备型号及供电状况详见《305掘进工作面供电系统图》和《305二、掘进工作面设备选型1、掘进机EBJ-120TP掘进机主要技术参数：机长：8.6米 可掘巷道断面：9-18m2最大可掘高度：3.75m ：5m供电电压：660V 总功率：190KW2、可伸缩皮带机SSJ-800/2X55运输力量：400T/H 带速：2m/S 带宽：800mm3、刮板运输机主要技术参数：输送力量：150T/H 三、掘进工作面供电设备选型1、变压器容量选择305EBJ-120TP190KW，SSJ-800/2X55110KW:

S=∑P

*krncos￠∑P=P +Pn 掘进机 运输机=190+110=300KW需用系数： Kr=0.5〔掘进〕平均功率因素：cos￠=0.7〔掘进〕S=∑PN*kr =300*0.5cos￠ 0.7

=214KVA依据实际条件轨道巷选用一台KBSGZY-630/10/0.69KV电站供电。305EBJ-120TP掘进机功率190KW胶带巷、尾巷各一台，SSJ-800/2X55110KWS=∑PN*krcos￠∑P=P +P +P+Pn 掘进机

运输机

刮板 650皮带=190*2+110*2+40*2+7.5*3=702.5KW需用系数：Kr=0.5〔掘进〕平均功率因素：cos￠=0.7〔掘进〕S=∑PN*kr =702.5*0.5cos￠ 0.7

=502KVA动变电站供电。2、采区变电所高压开关的选择依据用电负荷额定电流选择高开3UI 3U

41A3103103、电缆选择高压电缆选择41A。MYPTJ-6/10kV-3*50＋3*16/3＋JS高压矿用橡套电缆载流量198A，符合要求。低压电缆选择依据负荷状况，由两台移变分别为三条巷道的设备供电，一台KBSGZY-1000/10/0.69①轨道巷：供轨道巷掘进机电缆的选择：p3Ucos33Ucos30.660.7

190

237AMYP-3*95+1*35260A，考虑电MYP-3*95+1*35蔽电缆。供轨道巷皮带主电缆的选择：P3Ucos33Ucos30.660.7

110

137AMYP-3*70+1*25215A，考虑电MYP-3*70+1*25蔽电缆。②胶带巷、尾巷：从KBSGZY-1000/10/0.693Ucos掘进机33Ucos掘进机30.660.7

190

237AMYP-3*95+1*35260A，考虑电缆长时允许通过电流和机械强度，打算电缆选用MYP-3*95+1*35屏蔽电缆。供胶带巷掘进机电缆的选择：3Ucos掘进机33Ucos掘进机30.660.7

190

237AMYP-3*95+1*35260A，考虑电MYP-3*95+1*35蔽电缆。供尾巷皮带、40TP3UcosI3Ucos

P40T溜子

11040

30.6630.660.7MYP-3*70+1*25215A，考虑电MYP-3*70+1*25蔽电缆。80P3Ucos33Ucos30.660.7

110

137AMYP-3*50+1*16173A，考虑电MYP-3*50+1*16蔽电缆。胶带巷主电缆选择：I

4037.5110

216A3Ucos33Ucos30.660.7供胶带巷皮带的电缆：p3Ucos33Ucos30.660.7

2

137A考虑电缆长时允许通过电流和机械强度，打算选用173A。40T3UcosI3Ucos

40T

4030.6630.660.7考虑电缆长时允许通过电流和机械强度，打算选用113A。24305掘进工作面设备布置图》四、短路电流计算〔一〕轨道巷短路电流计算KBSGZY-630/10/0.69变压器二次出口的短路电流Id1计算变压器二次电压660V，取690V。容量630KVA，系统短路容量按119.7MVAXX

U2 10.52arS 119.7br

0.9211电缆长度：0.5KMRga=0.416*0.5=0.208ΩXga=0.081*0.5=0.0405Ω变压器电阻、电抗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馈电开关短路电流Id11计算胶带巷KBZ-400型馈电开关电源侧MYP-3*95+1*35型电缆的电阻、电抗，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开关短路电流Id12计算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〕掘进机电机短路电流Id13计算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〕皮带电机处短路电流Id14、Id15KBZ-400负荷侧至接线盒之间MYP-3*70+1*25型电缆电阻、电抗，L=50MRo=0.315Ω/KMXo=0.078Ω/KMRz2=0.315*0.05=0.01575ΩXz2=0.078*0.05=0.0039ΩMYP-3*25+1*16型电缆电阻、电抗，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〕胶带尾巷短路电流计算KBSGZY-1000/10/0.69变压器二次出口的短路电流Id1计算690V1000KVA，系统短路容量按119.7MVAXX

U2 10.52arS 119.7br

0.9211电缆长度：0.82KMRga=0.416*0.82=0.34112ΩXga=0.081*0.82=0.06642Ω变压器电阻、电抗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馈电开关短路电流Id21计算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尾巷掘进机电机短路电流Id22计算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馈电开关短路电流Id213计算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胶带巷掘进机电机短路电流Id214计算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型馈电开关处短路电流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尾巷溜子电机处短路电流Id24KBZ-630MYP-3*70+1*25型电缆电阻、电抗，L=70MRo=0.315Ω/KMXo=0.078Ω/KMRz2=0.315*0.07=0.02205ΩXz2=0.078*0.07=0.00546ΩMYP-3*35+1*16型电缆电阻、电抗，L=50MRo=0.616Ω/KMXo=0.084Ω/KMRz1=0.616*0.05=0.0308ΩXz1=0.084*0.05=0.0042ΩMYP-3*25+1*16型电缆电阻、电抗，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尾行皮带电机处短路电流Id25、Id26MYP-3*50+1*16型电缆电阻、电抗，L=10MRo=0.448Ω/KMXo=0.081Ω/KMRz2=0.448*0.01=0.00448ΩXz2=0.081*0.01=0.00081ΩMYP-3*25+1*16型电缆电阻、电抗，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溜子电机处短路电流Id27KBZ-630负荷侧至接线盒 MYP-3*95+1*35型电缆电阻、电抗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型电缆电阻、电抗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皮带电机处短路电流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型电缆电阻、电抗，L=10MRo=0.864Ω/KMXo=0.088Ω/KMRz1=0.864*0.01=0.00864ΩXz1=0.088*0.01=0.00088ΩMYP-3*16+1*10型电缆电阻、电抗，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皮带电机处短路电流Id29、Id210、MYP-3*50+1*16型电缆电阻、电抗，L=10MRo=0.448Ω/KMXo=0.081Ω/KMRz2=0.448*0.01=0.00448ΩXz2=0.081*0.01=0.00081ΩMYP-3*25+1*16型电缆电阻、电抗，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、低压开关及变压器的整定(一)轨道巷低压开关及变压器的整定:〔1〕皮带开关整定3Ie=Pe/(3=110*103/(=113Aa、过负荷整定

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

*Ue*cos)=62.5*103/(=64A3I截割头=Pe/(33=120*103/(3=124Aa、过负荷整定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用负荷侧馈电开关处发生两相短路电流进展校验Id13÷I/z1=1366÷808=1.7>1.2 合格(3)KBZ-400a、过负荷整定Iz1=∑Ie=113=113AKBZ-400115Ab、短路整定I/z1=KIe+∑Ie=6*113=678A1156690A用负荷侧馈电开关处发生两相短路电流进展校验Id14÷I/z1=9139÷690=13>1.2 合格(4〕KBSGZY-630/10/0.69a、过负荷整定Iz1=∑Ie=64+124+113=301A310Ab、短路整定I/z1=KIe+KX∑Ie=6*124+64+113=921A310A3930A灵敏度校验，为保护变压器，用变压器低压侧发生短路进展校验得Id1÷I/z1=15935÷930=17>1.5 合格作为低压侧末端发生短路的后备保护，用低压侧KBZ-400馈电开关处发生两相短路电流进展校验Id11÷I/z1=15132÷930=16.3>1.2 合格KBSGZY-630/10/0.69过负荷整定Iz1高压=Iz1÷15.2=20.4A21A短路整定 I/z1高压=I/z1低压÷15.2=61.2A取高压侧额定电流21A的3倍，为63A(二)胶带巷尾巷低压开关及变压器器整定:尾巷:溜子开关整定3Ie=Pe/(33=40*103/(3=41Aa、过负荷整定

*Ue*cos)*660*0.85)Iz24=Ie=41Ab、短路整定I/Z24=KIe=8*41=328A灵敏度校验Id24÷I/z14=4585÷328=14>1.2 格皮带开关整定3Ie=Pe/(3=110*103/(

*Ue*cos)3*660*0.85)3=113Aa、过负荷整定Iz25=Iz26=Ie=113Ab、短路整定I/Z25=I/Z26=KIe=8*113=904A灵敏度校验Id25÷I/z25=6745÷904=7.5>1.2 格(3)KBZ-4003I掘进机油泵及7.5KW=Pe/(3

*Ue*cos)=62.5*103/(=64A3I截割头=Pe/(33=120*103/(3=124Aa、过负荷整定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用负荷侧馈电开关处发生两相短路电流进展校验Id22÷I/z22=1247÷808=1.5>1.2 合格胶带巷：〔1〕40T3Ie=Pe/(3=40*103/(=41Aa、过负荷整定

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

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

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

*Ue*cos)=62.5*103/(=64A3I截割头=Pe/(33=120*103/(3=124Aa、过负荷整定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用负荷侧馈电开关处发生两相短路电流进展校验Id214÷I/z213=1183÷808=1.5>1.2 合格(3KBZ-630a、过负荷整定Iz=∑Ie=113*2+41*2+23=331AKBZ-630331Ab、短路整定I/z23=KIe+∑Ie=6*113+113+41*2+23=896A331A3993A用负荷侧馈电开关处发生两相短路电流进展校验Id29÷I/z23=5066÷993=5.1>1.2 合格KBSGZY-1000/10/0.69a、过负荷整定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灵敏度校验，为保护变压器，用变压器低压侧发生短路进展校验得Id2÷I/z2=14345÷1420=10>1.5 合格短路电流进展校验Id23÷I/z1=8333÷1420=5.9>1.2 格KBSGZY-1000/10/0.69过负荷整定Iz1高压=Iz1÷15.2=47A47A短路整定 I/z1高压=I/z1低压÷15.2=88A取高压侧额定电流47A的2倍，为94A六、变电所高压开关的整定a、过负荷整定Ig=∑IeNcosNcos3100.7=3100.7=83A200A0.6120Ab、短路整定考虑，其高压侧动作电流计算值为：I

12461242113364324I” ST g KT

15.2

=102A200A1200A。灵敏度校验，