煤矿1111(1)工作面供电设计说明书.doc

朱集矿井1111(1)工作面供电设计说明书淮南矿业集团朱集煤矿1111(1)工作面供电设计说明书 朱集煤矿2010.11.20目 录一、供电方式二、负荷统计三、变压器选择四、高压配电装置选择五、高压电缆选择六、低压电缆选择七、电缆损失校验八、短路电流计算九、低压开关整定及校验十、附录 符号解释一、供电方式依据朱集煤矿1111(1)综采工作面机电设备的选型的参数、容量、电压等级、供电距离及工作面供风的要求，设备的布置安装地点等，拟定供电设计方案为（具体见供电图及设备布置图）：1、由东一11-2煤层北盘区变电所5高防敷设一路MYPTJ-6/10-395335/3JS-2140m高压电缆，经-885m东一轨道大巷1111(1)工作面运输顺槽1#移变。从1#移变高压侧引MYPTJ-6/10-395335/3JS-20m高压电缆至2#移变，2#移变高压侧引MYPTJ-6/10-395335/3JS-20m高压电缆至3#移变。其中：1#移变供采煤机、破碎机，负荷电压等级为3300V；2#移变供刮板输送机、转载机，负荷电压等级为3300V；3#移变供乳化泵、喷雾泵，负荷电压等级为1140V。2、由东一11-2煤层北盘区变电所11高防敷设一路MYPTJ-6/10-395335/3JS-140m高压电缆，经-885m东一轨道大巷运输顺槽回风联巷。从4#移变高压侧引MYPTJ-6/10-395335/3JS-20m高压电缆至5#移变。其中：4#移变供轨运顺660V动力，负荷电压等级为660V；5#移变供运输顺槽皮带机、轨运顺无极绳绞车，负荷电压等级为1140V；二、负荷统计工作面主要设备的装机容量P4371.9kW，其中，电压为3300V的2638kW，电压为1140V的1490kW，电压为660V的243.9kW。表一 用电负荷统计表序号设备名称设备型号及数量技术数据型号规格台数Pe(kW)Ue(V)Ie(A)1采煤机SL3001113833002492刮板运输机SGZ9001 2525330021153转载机SZZ8001250330054.84破碎机PCM2001200330043.85乳化泵BRW400/31.5F22501140158.36喷雾泵BPW315/10275114047.57无极绳绞车 SQ-80/11021101140700.456600.58顺槽皮带机DSJ120013315114032009水泵 BQS50/12043766040.510回柱绞车JH-142226602411涨紧绞车1116601212照明综保ZBZ-10L4106608.8三、变压器选择根据负荷情况，将各类负荷分组供电，变压器的需用容量采用需用系数法计算各变压器的选择结果及负荷分配。1、1#变压器的选择(采煤机、破碎机)需用系数功率因数需用容量选用容量为2500kVA的移变，即KBSGZY2500kVA-10/3.45kV。2、2#变压器的选择(刮板输送机、转载机)需用系数功率因数需用容量选用容量为1600kVA的移变，即KBSGZY1600kVA-10/3.45kV。3、3#变压器的选择(乳化泵、喷雾泵)需用系数功率因数需用容量选用容量为630kVA的移变，即KBSGZY630kVA-10/1.2kV。4、4#变压器的选择(轨运顺660V动力)P41020.45211372222102372243.9kW需用系数功率因数需用容量选用容量为630kVA的移变，即KBSGZY630kVA-10/0.69kV。5、5#变压器的选择(顺槽皮带机、轨运顺无极绳绞车)需用系数功率因数需用容量选用容量为1600kVA的移变，即KBSGZY1600kVA-10/1.2kV。表二 变压器选择及负荷分配序号变压器规格型号负荷名称负荷技术数据P(kW)S(kVA)K1KBSGZY2500kVA-10/3.45kV采煤机、破碎机133825000.912KBSGZY1600kVA-10/3.45kV刮板输送机、转载机1300 16000.893KBSGZY630kVA-10/1.2kV乳化泵、喷雾泵325 6300.864KBSGZY630kVA-10/0.69kV轨运顺660V动力 243.9 630 0.55KBSGZY1600kVA-10/1.2kV顺槽皮带机轨运顺无极绳绞车116516000.89四、高压配电装置的选择根据负荷情况，除选择5台移变外，还需2台PBG53-400A/10Y型高压真空配电装置。1、105#高防开关需用系数功率因数长时负荷电流高压出口处三相短路电流热稳定电流断流容量2、205#高防开关需用系数功率因数长时负荷电流高压出口处三相短路电流热稳定电流断流容量表三 高压配电装置编号型号额定电压(V)额定电流(A)额定热稳定电流(kA)热稳定时间(s)额定断流容量(MVA)105PBG53-400A/10Y1000040012.52150205PBG53-400A/10Y1000040012.52150五、高压电缆选择根据工作面负荷情况，高压电缆L1、L2、L3、L4、L5选择使用MYPTJ-6/10-395335/3JS高压电缆，只需对L1、L4进行校验，满足即可。1、按长时允许电流校验L1、L4高压电缆长时运行电缆IyIg1，IyIg2，满足要求2、按经济电流密度校验所选电缆大于计算电缆，满足要求3、按热稳定校验所选电缆大于计算电缆，满足要求表四 高压电缆选择编号型号额定电压(V)长度(m)根数载流量(A)长时电流(A)功率(W)L1MYPTJ-6/10395335/3JS10000214012601352963L2MYPTJ-6/10395335/3JS1000020126092.61625L3MYPTJ-6/10395335/3JS1000020126020.2325L4MYPTJ-6/10395335/3JS10000140126081.41408.9L5MYPTJ-6/10395335/3JS1000020126074.81165六、低压电缆选择低压电缆根据电缆选型原则，按电缆长时允许负荷电流、机械强度、经济电流密度、热稳定选择本工作面电压电缆如下。表四 低压电缆选择编号型号额定电压(V)长度(m)根数载流量(A)长时电流(A)功率(W)L6MYPT39513533002012602491138L7MCPTJ395135330030012602491138L8MYPT395135330020126043.8200L9MYPT325110330020111343.8200L10MYPT395135330020126054.8250L11MYPT325110330025111354.8250L12MYPT39513533002012602301050L13MYPT3351163300201138115525L14MYPT33511633003001138115525L15MYP3951351140201260158.3250L16MYP3501161140201173158.3250L17MYP3501161140201173158.3250L18MYP395135114020126047.575L19MYP31611011402018547.575L20MYP31611011402018547.575L21MYP395135660201260120127.45L22MYP3951356602001260100106L23MYP39513566030012608069L24MYP39513566030012608069L25MYP39513566030012608069L26MYP39513566030012608069L27MYP39513566030012608069L28MYP350116660511738069L29MYP350116660511735247L30MYP3501166605117340.537L31MYP3501166605117340.537L32MYP3501166605117340.537L33MYP3501166605117340.537L34MYP3501166605117321.321.45L35MYP3501166605117312.511.45L36MYP350116660511731211L37MYP395135660201260120116.45L38MYP3951356603001260120116.45L39MYP3951356602001260100106L40MYP39513566030012608069L41MYP39513566030012608069L42MYP39513566030012608069L43MYP39513566030012608069L44MYP39513566030012608069L45MYP350116660511738069L46MYP350116660511735247L47MYP3501166605117340.537L48MYP3501166605117340.537L49MYP3501166605117340.537L50MYP3501166605117340.537L51MYP350116660511739.310.45L52MYP350116660511730.50.45L53MYP3951351140101260140220L54MYP31201351140101640600945L55MYP31201351140101L56MYP3951351140300126070110L57MYP395135114050126070110七、电压损失校验总的电压损失由变压器电压损失、干线电压损失、支线电压损失三部分组成。1、1#移变供电系统电压损失1#变压器内部电压损失 对于采煤机的电压损失 根据GB50417-2007煤矿井下供配电设计规范及煤矿井下电缆安装、运行、维修、管理工作细则规定，电压损失校验按照不低于15%校验。满足要求2、2#移变供电系统电压损失2#变压器内部电压损失 对于刮板输送机的电压损失 根据GB50417-2007煤矿井下供配电设计规范及煤矿井下电缆安装、运行、维修、管理工作细则规定，电压损失校验按照不低于15%校验。满足要求3、3#移变供电系统电压损失3#变压器内部电压损失 对于乳化泵的电压损失 根据GB50417-2007煤矿井下供配电设计规范及煤矿井下电缆安装、运行、维修、管理工作细则规定，电压损失校验按照不低于15%校验。满足要求4、4#移变供电系统电压损失4#变压器内部电压损失 对于迎头水泵的电压损失 根据GB50417-2007煤矿井下供配电设计规范及煤矿井下电缆安装、运行、维修、管理工作细则规定，电压损失校验按照不低于15%校验。 满足要求5、5#移变供电系统电压损失5#变压器内部电压损失 对于轨顺无极绳绞车的电压损失 根据GB50417-2007煤矿井下供配电设计规范及煤矿井下电缆安装、运行、维修、管理工作细则规定，电压损失校验按照不低于15%校验。满足要求八、短路电流计算1、Id1高压电缆Lg=2.14km，电阻Rg=0.247/km，电抗Xg=0.075/km变压器一次侧电压为10000V，二次侧电压为3450V，容量为2500kVA，变比Kb=2.9，电阻Rb=0.0206，电抗Xb=0.261系统短路容量按100MVA计算，则系统电抗Xx=0.1191低压电缆L6=0.02km，电阻R6=0.247/km，电抗X6=0.075/km2、Id2高压电缆Lg=2.16km，电阻Rg=0.247/km，电抗Xg=0.075/km变压器一次侧电压为10000V，二次侧电压为3450V，容量为1600kVA，变比Kb=2.9，电阻Rb=0.0395，电抗Xb=0.3698系统短路容量按100MVA计算，则系统电抗Xx=0.1191低压电缆L10=0.02km，电阻R10=0.247/km，电抗X10=0.075/km 3、Id3高压电缆Lg=2.18km，电阻Rg=0.247/km，电抗Xg=0.075/km变压器一次侧电压为10000V，二次侧电压为1200V，容量为630kVA，变比Kb=8.33，电阻Rb=0.0149，电抗Xb=0.0902系统短路容量按100MVA计算，则系统电抗Xx=0.0144低压电缆L15=0.02km，电阻R15=0.23/km，电抗X15=0.075/km 4、Id4高压电缆Lg=0.14km，电阻Rg=0.247/km，电抗Xg=0.075/km变压器一次侧电压为10000V，二次侧电压为690V，容量为630kVA，变比Kb=14.5，电阻Rb=0.005，电抗Xb=0.0301系统短路容量按100MVA计算，则系统电抗Xx=0.0048低压电缆L21=0.02km，电阻R21=0.23/km，电抗X21=0.075/km 5、Id5高压电缆Lg=0.16km，电阻Rg=0.247/km，电抗Xg=0.075/km变压器一次侧电压为10000V，二次侧电压为1200V，容量为1600kVA，变比Kb=8.33，电阻Rb=0.0048，电抗Xb=0.0447系统短路容量按100MVA计算，则系统电抗Xx=0.0144低压电缆L53=0.02km，电阻R53=0.23/km，电抗X53=0.075/km 6、Id6高压电缆Lg=2.14km，电阻Rg=0.247/km，电抗Xg=0.075/km变压器一次侧电压为10000V，二次侧电压为3450V，容量为2500kVA，变比Kb=2.9，电阻Rb=0.0206，电抗Xb=0.261系统短路容量按100MVA计算，则系统电抗Xx=0.1191低压电缆L6=0.02km，电阻R6=0.247/km，电抗X6=0.075/km L7=0.3km，电阻R7=0.247/km，电抗X7=0.075/km7、Id7高压电缆Lg=2.14km，电阻Rg=0.247/km，电抗Xg=0.075/km变压器一次侧电压为10000V，二次侧电压为3450V，容量为2500kVA，变比Kb=2.9，电阻Rb=0.0206，电抗Xb=0.261系统短路容量按100MVA计算，则系统电抗Xx=0.1191低压电缆L8=0.02km，电阻R8=0.247/km，电抗X8=0.075/km L9=0.02km，电阻R9=0.825/km，电抗X9=0.088/km 8、Id8高压电缆Lg=2.16km，电阻Rg=0.247/km，电抗Xg=0.075/km变压器一次侧电压为10000V，二次侧电压为3450V，容量为1600kVA，变比Kb=2.9，电阻Rb=0.0395，电抗Xb=0.3698系统短路容量按100MVA计算，则系统电抗Xx=0.1191低压电缆L10=0.02km，电阻R10=0.247/km，电抗X10=0.075/kmL11=0.02km，电阻R11=0.825/km，电抗X11=0.088/km 9、Id9高压电缆Lg=2.16km，电阻Rg=0.247/km，电抗Xg=0.075/km变压器一次侧电压为10000V，二次侧电压为3450V，容量为1600kVA，变比Kb=2.9，电阻Rb=0.0395，电抗Xb=0.3698系统短路容量按100MVA计算，则系统电抗Xx=0.1191低压电缆L12=0.02km，电阻R12=0.247/km，电抗X12=0.075/km L14=0.3km，电阻R14=0.683/km，电抗X14=0.084/km 10、Id10高压电缆Lg=2.18km，电阻Rg=0.247/km，电抗Xg=0.075/km变压器一次侧电压为10000V，二次侧电压为1200V，容量为630kVA，变比Kb=8.33，电阻Rb=0.0149，电抗Xb=0.0902系统短路容量按100MVA计算，则系统电抗Xx=0.0144低压电缆L15=0.02km，电阻R15=0.23/km，电抗X15=0.075/kmL16=0.02km，电阻R16=0.448/km，电抗X16=0.081/km 11、Id11高压电缆Lg=2.18km，电阻Rg=0.247/km，电抗Xg=0.075/km变压器一次侧电压为10000V，二次侧电压为1200V，容量为630kVA，变比Kb=8.33，电阻Rb=0.0149，电抗Xb=0.0902系统短路容量按100MVA计算，则系统电抗Xx=0.0144低压电缆L18=0.02km，电阻R18=0.23/km，电抗X18=0.075/kmL19=0.02km，电阻R19=1.37/km，电抗X19=0.09/km 12、Id12高压电缆Lg=0.16km，电阻Rg=0.247/km，电抗Xg=0.075/km变压器一次侧电压为10000V，二次侧电压为1200V，容量为1600kVA，变比Kb=8.33，电阻Rb=0.0048，电抗Xb=0.0447系统短路容量按100MVA计算，则系统电抗Xx=0.0144低压电缆L54=0.01km，电阻R54=0.147/km，电抗X54=0.072/km L55=0.01km，电阻R55=0.147/km，电抗X55=0.072/km 13、Id13高压电缆Lg=0.16km，电阻Rg=0.247/km，电抗Xg=0.075/km变压器一次侧电压为10000V，二次侧电压为1200V，容量为1600kVA，变比Kb=8.33，电阻Rb=0.0048，电抗Xb=0.0447系统短路容量按100MVA计算，则系统电抗Xx=0.0144低压电缆L53=0.01km，电阻R53=0.23/km，电抗X53=0.075/kmL56=0.3km，电阻R56=0.23/km，电抗X56=0.075/km 14、Id14高压电缆Lg=0.16km，电阻Rg=0.247/km，电抗Xg=0.075/km变压器一次侧电压为10000V，二次侧电压为1200V，容量为1600kVA，变比Kb=8.33，电阻Rb=0.0048，电抗Xb=0.0447系统短路容量按100MVA计算，则系统电抗Xx=0.0144低压电缆L53=0.01km，电阻R53=0.23/km，电抗X53=0.075/kmL57=0.05km，电阻R57=0.23/km，电抗X57=0.075/km 15、Id15高压电缆Lg=0.16km，电阻Rg=0.247/km，电抗Xg=0.075/km变压器一次侧电压为10000V，二次侧电压为1200V，容量为1600kVA，变比Kb=8.33，电阻Rb=0.0048，电抗Xb=0.0447系统短路容量按100MVA计算，则系统电抗Xx=0.0144低压电缆L53=0.01km，电阻R53=0.23/km，电抗X53=0.075/kmL56=0.3km，电阻R56=0.23/km，电抗X56=0.075/km 16、Id16高压电缆Lg=0.14km，电阻Rg=0.247/km，电抗Xg=0.075/km变压器一次侧电压为10000V，二次侧电压为690V，容量为630kVA，变比Kb=14.5，电阻Rb=0.005，电抗Xb=0.0301系统短路容量按100MVA计算，则系统电抗Xx=0.0048低压电缆L21=0.02km，电阻R21=0.23/km，电抗X21=0.075/kmL22=0.2km，电阻R22=0.23/km，电抗X22=0.075/kmL23=0.3km，电阻R23=0.23/km，电抗X23=0.075/kmL24=0.3km，电阻R24=0.23/km，电抗X24=0.075/kmL25=0.3km，电阻R25=0.23/km，电抗X25=0.075/kmL26=0.3km，电阻R26=0.23/km，电抗X26=0.075/kmL27=0.3km，电阻R27=0.23/km，电抗X27=0.075/km 17、Id17高压电缆Lg=0.14km，电阻Rg=0.247/km，电抗Xg=0.075/km变压器一次侧电压为10000V，二次侧电压为690V，容量为630kVA，变比Kb=14.5，电阻Rb=0.005，电抗Xb=0.0301系统短路容量按100MVA计算，则系统电抗Xx=0.0048低压电缆L37=0.02km，电阻R37=0.23/km，电抗X37=0.075/kmL38=0.3km，电阻R38=0.23/km，电抗X38=0.075/kmL39=0.2km，电阻R39=0.23/km，电抗X39=0.075/kmL40=0.3km，电阻R40=0.23/km，电抗X40=0.075/kmL41=0.3km，电阻R41=0.23/km，电抗X41=0.075/kmL42=0.3km，电阻R42=0.23/km，电抗X42=0.075/kmL43=0.3km，电阻R43=0.23/km，电抗X43=0.075/kmL44=0.3km，电阻R44=0.23/km，电抗X44=0.075/km 18、Id18高压电缆Lg=0.14km，电阻Rg=0.247/km，电抗Xg=0.075/km变压器一次侧电压为10000V，二次侧电压为690V，容量为630kVA，变比Kb=14.5，电阻Rb=0.005，电抗Xb=0.0301系统短路容量按100MVA计算，则系统电抗Xx=0.0048低压电缆L21=0.02km，电阻R21=0.23/km，电抗X21=0.075/kmL22=0.2km，电阻R22=0.23/km，电抗X22=0.075/kmL23=0.3km，电阻R23=0.23/km，电抗X23=0.075/kmL24=0.3km，电阻R24=0.23/km，电抗X24=0.075/kmL25=0.3km，电阻R25=0.23/km，电抗X25=0.075/kmL26=0.3km，电阻R26=0.23/km，电抗X26=0.075/kmL27=0.3km，电阻R27=0.23/km，电抗X27=0.075/kmL28=0.005km，电阻R28=0.448/km，电抗X28=0.081/kmL29=0.005km，电阻R29=0.448/km，电抗X29=0.081/kmL30=0.005km，电阻R30=0.448/km，电抗X30=0.081/kmL31=0.005km，电阻R31=0.448/km，电抗X31=0.081/km 19、Id19高压电缆Lg=0.14km，电阻Rg=0.247/km，电抗Xg=0.075/km变压器一次侧电压为10000V，二次侧电压为690V，容量为630kVA，变比Kb=14.5，电阻Rb=0.005，电抗Xb=0.0301系统短路容量按100MVA计算，则系统电抗Xx=0.0048低压电缆L37=0.02km，电阻R37=0.23/km，电抗X37=0.075/kmL38=0.3km，电阻R38=0.23/km，电抗X38=0.075/kmL39=0.2km，电阻R39=0.23/km，电抗X39=0.075/kmL40=0.3km，电阻R40=0.23/km，电抗X40=0.075/kmL41=0.3km，电阻R41=0.23/km，电抗X41=0.075/kmL42=0.3km，电阻R42=0.23/km，电抗X42=0.075/kmL43=0.3km，电阻R43=0.23/km，电抗X43=0.075/kmL44=0.3km，电阻R44=0.23/km，电抗X44=0.075/km L45=0.005km，电阻R45=0.448/km，电抗X45=0.081/kmL46=0.005km，电阻R46=0.448/km，电抗X46=0.081/kmL47=0.005km，电阻R47=0.448/km，电抗X47=0.081/kmL48=0.005km，电阻R48=0.448/km，电抗X48=0.081/km 20、Id20高压电缆Lg=0.14km，电阻Rg=0.247/km，电抗Xg=0.075/km变压器一次侧电压为10000V，二次侧电压为690V，容量为630kVA，变比Kb=14.5，电阻Rb=0.005，电抗Xb=0.0301系统短路容量按100MVA计算，则系统电抗Xx=0.0048低压电缆L21=0.02km，电阻R21=0.23/km，电抗X21=0.075/kmL34=0.02km，电阻R34=0.0448/km，电抗X34=0.081/kmL35=0.005km，电阻R35=0.0448/km，电抗X35=0.081/km 21、Id21高压电缆Lg=0.14km，电阻Rg=0.247/km，电抗Xg=0.075/km变压器一次侧电压为10000V，二次侧电压为690V，容量为630kVA，变比Kb=14.5，电阻Rb=0.005，电抗Xb=0.0301系统短路容量按100MVA计算，则系统电抗Xx=0.0048低压电缆L21=0.02km，电阻R21=0.23/km，电抗X21=0.075/kmL34=0.02km，电阻R34=0.0448/km，电抗X34=0.081/kmL35=0.005km，电阻R35=0.0448/km，电抗X35=0.081/kmL36=0.005km，电阻R36=0.0448/km，电抗X36=0.081/km 22、Id22高压电缆Lg=0.14km，电阻Rg=0.247/km，电抗Xg=0.075/km变压器一次侧电压为10000V，二次侧电压为690V，容量为630kVA，变比Kb=14.5，电阻Rb=0.005，电抗Xb=0.0301系统短路容量按100MVA计算，则系统电抗Xx=0.0048低压电缆L21=0.02km，电阻R21=0.23/km，电抗X21=0.075/kmL22=0.2km，电阻R22=0.23/km，电抗X22=0.075/kmL32=0.005km，电阻R32=0.0448/km，电抗X32=0.081/km 23、Id23高压电缆Lg=0.14km，电阻Rg=0.247/km，电抗Xg=0.075/km变压器一次侧电压为10000V，二次侧电压为690V，容量为630kVA，变比Kb=14.5，电阻Rb=0.005，电抗Xb=0.0301系统短路容量按100MVA计算，则系统电抗Xx=0.0048低压电缆L21=0.02km，电阻R21=0.23/km，电抗X21=0.075/kmL22=0.2km，电阻R22=0.23/km，电抗X22=0.075/kmL32=0.005km，电阻R32=0.0448/km，电抗X32=0.081/kmL33=0.005km，电阻R33=0.0448/km，电抗X33=0.081/km 24、Id24高压电缆Lg=0.14km，电阻Rg=0.247/km，电抗Xg=0.075/km变压器一次侧电压为10000V，二次侧电压为690V，容量为630kVA，变比Kb=14.5，电阻Rb=0.005，电抗Xb=0.0301系统短路容量按100MVA计算，则系统电抗Xx=0.0048低压电缆L21=0.02km，电阻R21=0.23/km，电抗X21=0.075/kmL22=0.2km，电阻R22=0.23/km，电抗X22=0.075/kmL23=0.3km，电阻R23=0.23/km，电抗X23=0.075/kmL24=0.3km，电阻R24=0.23/km，电抗X24=0.075/kmL25=0.3km，电阻R25=0.23/km，电抗X25=0.075/kmL26=0.3km，电阻R26=0.23/km，电抗X26=0.075/kmL27=0.3km，电阻R27=0.23/km，电抗X27=0.075/kmL28=0.005km，电阻R28=0.448/km，电抗X28=0.081/km 25、Id25高压电缆Lg=0.14km，电阻Rg=0.247/km，电抗Xg=0.075/km变压器一次侧电压为10000V，二次侧电压为690V，容量为630kVA，变比Kb=14.5，电阻Rb=0.005，电抗Xb=0.0301系统短路容量按100MVA计算，则系统电抗Xx=0.0048低压电缆L21=0.02km，电阻R21=0.23/km，电抗X21=0.075/kmL22=0.2km，电阻R22=0.23/km，电抗X22=0.075/kmL23=0.3km，电阻R23=0.23/km，电抗X23=0.075/kmL24=0.3km，电阻R24=0.23/km，电抗X24=0.075/kmL25=0.3km，电阻R25=0.23/km，电抗X25=0.075/kmL26=0.3km，电阻R26=0.23/km，电抗X26=0.075/kmL27=0.3km，电阻R27=0.23/km，电抗X27=0.075/kmL28=0.005km，电阻R28=0.448/km，电抗X28=0.081/kmL29=0.005km，电阻R29=0.448/km，电抗X29=0.081/kmL30=0.005km，电阻R30=0.448/km，电抗X30=0.081/km 26、Id26高压电缆Lg=0.14km，电阻Rg=0.247/km，电抗Xg=0.075/km变压器一次侧电压为10000V，二次侧电压为690V，容量为630kVA，变比Kb=14.5，电阻Rb=0.005，电抗Xb=0.0301系统短路容量按100MVA计算，则系统电抗Xx=0.0048低压电缆L21=0.02km，电阻R21=0.23/km，电抗X21=0.075/kmL22=0.2km，电阻R22=0.23/km，电抗X22=0.075/kmL23=0.3km，电阻R23=0.23/km，电抗X23=0.075/kmL24=0.3km，电阻R24=0.23/km，电抗X24=0.075/kmL25=0.3km，电阻R25=0.23/km，电抗X25=0.075/kmL26=0.3km，电阻R26=0.23/km，电抗X26=0.075/kmL27=0.3km，电阻R27=0.23/km，电抗X27=0.075/kmL28=0.005km，电阻R28=0.448/km，电抗X28=0.081/kmL29=0.005km，电阻R29=0.448/km，电抗X29=0.081/kmL30=0.005km，电阻R30=0.448/km，电抗X30=0.081/kmL31=0.005km，电阻R31=0.448/km，电抗X31=0.081/km 27、Id27高压电缆Lg=0.14km，电阻Rg=0.247/km，电抗Xg=0.075/km变压器一次侧电压为10000V，二次侧电压为690V，容量为630kVA，变比Kb=14.5，电阻Rb=0.005，电抗Xb=0.0301系统短路容量按100MVA计算，则系统电抗Xx=0.0048低压电缆L37=0.02km，电阻R37=0.23/km，电抗X37=0.075/kmL38=0.3km，电阻R38=0.23/km，电抗X38=0.075/kmL51=0.005km，电阻R51=0.0448/km，电抗X51=0.081/kmL52=0.005km，电阻R52=0.0448/km，电抗X52=0.081/km 28、Id28高压电缆Lg=0.14km，电阻Rg=0.247/km，电抗Xg=0.075/km变压器一次侧电压为10000V，二次侧电压为690V，容量为630kVA，变比Kb=14.5，电阻Rb=0.005，电抗Xb=0.0301系统短路容量按100MVA计算，则系统电抗Xx=0.0048低压电缆L37=0.02km，电阻R37=0.23/km，电抗X37=0.075/kmL38=0.3km，电阻R38=0.23/km，电抗X38=0.075/kmL39=0.2km，电阻R39=0.23/km，电抗X39=0.075/kmL49=0.005km，电阻R49=0.0448/km，电抗X49=0.081/km 29、Id29高压电缆Lg=0.14km，电阻Rg=0.247/km，电抗Xg=0.075/km变压器一次侧电压为10000V，二次侧电压为690V，容量为630kVA，变比Kb=14.5，电阻Rb=0.005，电抗Xb=0.0301系统短路容量按100MVA计算，则系统电抗Xx=0.0048低压电缆L37=0.02km，电阻R37=0.23/km，电抗X37=0.075/kmL38=0.3km，电阻R38=0.23/km，电抗X38=0.075/kmL39=0.2km，电阻R39=0.23/km，电抗X39=0.075/kmL49=0.005km，电阻R49=0.0448/km，电抗X49=0.081/kmL50=0.005km，电阻R50=0.0448/km，电抗X50=0.081/km 30、Id30高压电缆Lg=0.14km，电阻Rg=0.247/km，电抗Xg=0.075/km变压器一次侧电压为10000V，二次侧电压为690V，容量为630kVA，变比Kb=14.5，电阻Rb=0.005，电抗Xb=0.0301系统短路容量按100MVA计算，则系统电抗Xx=0.0048低压电缆L37=0.02km，电阻R37=0.23/km，电抗X37=0.075/kmL38=0.3km，电阻R38=0.23/km，电抗X38=0.075/kmL39=0.2km，电阻R39=0.23/km，电抗X39=0.075/kmL40=0.3km，电阻R40=0.23/km，电抗X40=0.075/kmL41=0.3km，电阻R41=0.23/km，电抗X41=0.075/kmL42=0.3km，电阻R42=0.23/km，电抗X42=0.075/kmL43=0.3km，电阻R43=0.23/km，电抗X43=0.075/kmL44=0.3km，电阻R44=0.23/km，电抗X44=0.075/km L45=0.005km，电阻R45=0.448/km，电抗X45=0.081/km 31、Id31高压电缆Lg=0.14km，电阻Rg=0.247/km，电抗Xg=0.075/km变压器一次侧电压为10000V，二次侧电压为690V，容量为630kVA，变比Kb=14.5，电阻Rb=0.005，电抗Xb=0.0301系统短路容量按100MVA计算，则系统电抗Xx=0.0048低压电缆L37=0.02km，电阻R37=0.23/km，电抗X37=0.075/kmL38=0.3km，电阻R38=0.23/km，电抗X38=0.075/kmL39=0.2km，电阻R39=0.23/km，电抗X39=0.075/kmL40=0.3km，电阻R40=0.23/km，电抗X40=0.075/kmL41=0.3km，电阻R41=0.23/km，电抗X41=0.075/kmL42=0.3km，电阻R42=0.23/km，电抗X42=0.