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UNYCSPSPUEZBG
UNYCSPSPUEZBG
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     廣州地鐵三號(hào)線(xiàn)集中冷站系統(tǒng)構(gòu)成及特點(diǎn)
      廣州地鐵三號(hào)線(xiàn)集中冷站采用了施耐德高端PL C QUANTUM 控制器系列,對(duì)集中冷站和車(chē)站進(jìn)行控制,各車(chē)站與集中冷站之間采用多模光纖以太網(wǎng)通訊方式,通訊協(xié)議為MODBUS TCP .大大保證了通訊速率和通訊信息量的要求,同時(shí)也保證了通訊距離和系統(tǒng)的安全可靠性。送排風(fēng)及空調(diào)系統(tǒng)采用變頻器調(diào)節(jié)風(fēng)量,水系統(tǒng)二次泵也均采用變頻器調(diào)節(jié)。變頻器與通過(guò)Modbus通訊接口接入就地遠(yuǎn)程I/O箱的遠(yuǎn)程通訊模塊上,大大減少了通訊線(xiàn)的距離,避免了干擾。
      ● 集中冷站系統(tǒng)構(gòu)成
      ○ 集中冷站供冷系統(tǒng)由集中冷站,傳輸管道和末端設(shè)備構(gòu)成
      ○ 其中供冷系統(tǒng)圖如圖1-1,冷站系統(tǒng)圖如圖1-2
    集中冷站系統(tǒng)特點(diǎn)
      與分站供冷方式相比,集中冷站供冷系統(tǒng)需要為多個(gè)車(chē)站供冷,在供冷范圍和數(shù)量上都要大得多,有以下幾個(gè)主要特點(diǎn):
      ● 冷凍水傳輸距離長(zhǎng)。一般地鐵站距在1000米左右,本系統(tǒng)為6個(gè)車(chē)站供冷,冷凍水傳輸距離將達(dá) 2000~3000米。長(zhǎng)距離傳輸,管路的阻力大為增加,并且系統(tǒng)的熱惰性加大,增大了系統(tǒng)的調(diào)節(jié)難度
      ● 末端設(shè)備數(shù)量多,供冷管路形成網(wǎng)絡(luò)。由于各站的負(fù)荷情況不同,系統(tǒng)調(diào)節(jié)時(shí)易導(dǎo)致出現(xiàn)相互影響,需考慮整個(gè)網(wǎng)絡(luò)的整體水力平衡
      ● 集中冷站供冷系統(tǒng)的制冷部分,通常采用多機(jī)組,二級(jí)泵的形式。這種形式適應(yīng)了長(zhǎng)距離管路輸送阻力較大的情況,能夠減小末端系統(tǒng)對(duì)冷機(jī)的影響。但是增加了泵的數(shù)量和管路復(fù)雜性,使調(diào)節(jié)控制的難度加大
      調(diào)節(jié)控制方法與策略
      調(diào)節(jié)控制手段
      ● 廣州地鐵三號(hào)線(xiàn)集中供冷系統(tǒng)中,PLC采用的調(diào)節(jié)控制手段有:
      ○ 風(fēng)機(jī)變頻變風(fēng)量(末端設(shè)備)
      ○ 水泵變頻變水量
     ○ 水閥調(diào)水量
      ○ 質(zhì)調(diào)節(jié)
      調(diào)控手段的選擇
      由于管路很長(zhǎng),冷凍水從集中冷站到末端設(shè)備需要運(yùn)行數(shù)十分鐘,如果采用質(zhì)調(diào)節(jié),則調(diào)節(jié)時(shí)滯太大。因此在實(shí)時(shí)控制中,主要采用量調(diào)節(jié)的方式(包括風(fēng)量調(diào)節(jié)和水量調(diào)節(jié))。質(zhì)調(diào)節(jié)則采用開(kāi)環(huán)方式,根據(jù)外溫或季節(jié)確定冷凍水溫,并在一定時(shí)間內(nèi)(比如1天內(nèi))保持相對(duì)穩(wěn)定。
      二級(jí)泵管路長(zhǎng),阻力大,且流量直接受末端負(fù)荷的影響,因此二級(jí)泵采用變頻調(diào)節(jié),可以達(dá)到較好的節(jié)能效果。同時(shí)為了保證通過(guò)冷水機(jī)組的水量,一級(jí)泵采用定速泵,并與冷機(jī)對(duì)應(yīng)運(yùn)行,不進(jìn)行變頻調(diào)節(jié)。
      從節(jié)能的角度考慮,優(yōu)先考慮節(jié)能效果較好的風(fēng)機(jī)變頻和水泵變頻調(diào)節(jié),盡量少使用水閥調(diào)水量的方法。
      控制調(diào)節(jié)的策略
      初調(diào)節(jié)
      集中冷站供冷的管路復(fù)雜,不同支路之間的阻力差距大,因此需要進(jìn)行認(rèn)真的系統(tǒng)初調(diào)節(jié),以免系統(tǒng)水力失調(diào),導(dǎo)致運(yùn)行調(diào)節(jié)無(wú)法正常進(jìn)行。
      ● 初調(diào)節(jié)目標(biāo):
      ○ 驗(yàn)證系統(tǒng)可以達(dá)到設(shè)計(jì)工況
      ○ 實(shí)現(xiàn)系統(tǒng)的水力平衡,為運(yùn)行調(diào)節(jié)準(zhǔn)備條件。
      ● 調(diào)節(jié)步驟
      經(jīng)多次調(diào)整,使系統(tǒng)內(nèi)各機(jī)組的流量基本相同(如機(jī)組型號(hào)不同,則各機(jī)組的流量比值應(yīng)基本相同。流量比值=實(shí)際流量/設(shè)計(jì)流量)。且至少1個(gè)機(jī)組的閥門(mén)為全開(kāi)狀態(tài)。
      1、調(diào)整一級(jí)泵系統(tǒng)水力平衡
      2、設(shè)計(jì)頻率整定

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    1769-L33ERM , IC220DEM011 , IC647MOAM , IC693PTM101

    6GK7 543-1AX00-0XE0 , BMXAMO0210 , 1944605B1 , DFU1514W-A2

    UDK5114N , 3HAB2241-1/06B , 5SDA06P3836 , A26R-30-11-84

    DSDXB001 , GNT0153800R0001 , NKLS01 , S202-K15

    YT221001-LS , Bosch 830ES , VSX55-1.29 , REXROTH DPR-10

    MKD090B-058-KG0-KN , CAB-SFP-50CM , 6046H46 , EDH2200

    CPS100480DAC , 92-00803-00 , 1480R6501 , HP 1660CP

    HP 85046A-P , HP L699728990A , XYCOM 4117T , GP377SC4124V

    XYCOM GP2500TC41 , CIMR-G7B4022 , JAMSC-B1074-1 , SGD-01AN

    SGMPH-15AAA6CD-OY , 5TI5-25863-24 , TEXAS INSTRUMENTS 505-4032 , 1756-TBSH

    IC200TBX264 , IC647AUR001 , IC690CDP002 , 1FL6066-1AC61-0LB1

    TLXADGY23M , 07BT62R1 , BXM5120-GFH2 , PK599AW-A6

    3E032176 , 5731-0290-BR , 715000AAAA2 , DLA12-30-84

    GJR2267600R1 , NBRA659C , R58113972 , YL261001-AL

    Bosch 0265202438000 , 048479-207401 , 4WE10D40/0FCW110N9DA/V , PPCR022N-N-NN-NN-NN-FW

    SGE2010P , TDR132E-S , FDB3020 , D500-CPU25

    A10DGOAB , HLDB3400 , HP 10073C , HP 81142A

    HP E4440-60213 , Triconex 3504E , XYCOM 3512KPM , XYCOM CA-CABLE-050M

    CDBR-4220 , ETC740012S1019 , JZRCR-XPU05B , SGMGH-13ACA61

    Yaskawa AI-14B , TEXAS INSTRUMENTS 46198-2 , 1756-A10K , IC200ACC304

    IC646PME050 , IC660EBR101 , 6ES7422-1BH11-0AA0 , TSXMCPC224K

    ABB 9981522 , A6216-9412K , PK266-01A-C103 , 3BSE004985R1

    57120001-PC/6 , 6634045J1 , C501/0200/STD , EHDBRC130-2

    KLI23T3 , PSR25-600-70 , XR301960-A , PCI-1721

    HBL5750UC , 9510290025 REXROTH , Rexroth VT1803 , OPB-SCE-MM

    ME40BW13B , HFD3045 , DH-361NWK , AN16GNOAB

    10316H-17D , XTSC063DDTD-JW1 , HP 5508A , HP E1497-61601

    TRICONEX 3721 , 97728-001 , XYCOM AGP3510-T1-AF-CA1M , CACR-SR10SZ

    DF8100285 , jrmsi-bi026 , SGMAH-04AAA41-Y2 , USASEM-10HS22

    TEXAS INSTRUMENTS 30502B , 1734-IE2V , 1792D-4BV0D , IC646MBLS99

    IC647TUTM , 6ES7 222-1BF22-0XA0 , 140DAI75300C , 170XTS01200

    4GK5K-D9 , PH26SL-04 , 3BHT300002R1 , 4891-059-ED

    6248BP10831A , ASC25H216A , DSTD131 , IMCOM-03

    PCM15 , TB52510100 , PCL-818LS , GKF400

    REXROTH 0-608-830-238 , ZDB-6-VB3-42/100V , WS-X45-SUP7L-E , C10DN3AB

    IQ230M/IQ330M , E50-AR1P4 , C320-TP2 , 1755K PMPS 1700

    6-65-4 CUTLER HAMMER , HP 5086-7539 , HP A6055A , Tricon 3004

    81987-001B , XYCOM 5019T-SS , CACR-IR15SFB , CPCR-IN02B-Y8

    JANCV-MFC05 , SGLGW-60A365AW , USAFED-20C2L2KE , TEXAS INSTRUMENTS 2462050-0001

    TEXAS INSTRUMENTS UC3823BDW , 1783-MX08S , IC600CB536 , IC647PCMS1C

    IC697ACC802 , 6ES7833-1CC00-6YX0 , STBDAI5230K , 26390603-AZ

    KXPM460GD-AB , 2GCA284633A0050 , 3HAC-17484-2/00NSPP3HAC17484200 , 6024NR14130

    ACH550-UH-072A-4 , DSQC532B , HESG447419R0001 , NTCF21

    SKD75GAL123D16L , ADAM-4012 , SHX45P06UC , VT5062-S10-R1

    Rexroth 3 842 518 050 , EVO-ALL , V48M28T45K  , MDLB3800T33W

    E58-18DP50-ELPB , CE15SE3AB , GFCB260 , QC-2FP

    HP 35670A , HP 8720ES , HP 8167B , Xycom 113120

    XYCOM 1510-3000-2000-DVDW , XYCOM XYC5015KPM MONITOR , CIMR-V7AM45P51 , JANCD-FC300B

    SGDH-08AE-SY905 , UGCMED-15-MC64 , NSFP , TEXAS INSTRUMENTS 5107105

    1769-OF4 , IC220MDL644 , IC647MQP001 , IC693UDR005

    6ES7 590-1BC00-0AA0 , BMXNOE0110H , 1946973A2 , E1002-454-E1

    UDK5128NW , 3HAB3125-1 , 5SDD48H3200 , A320-30-11-84

    DSIM2918 , GNT7045177P1 , NKLS113 , S283DS63A

    YWP-H , BOSCH 041525-105401 , RAC 2.2-250-460-A00-W1 , LFA 25 DBW2-65/200/12

    4WRAE10W60-2X/G24N9K31/A1V , C2921-VSEC/K9 , QPGF-1030 , ED3100LB02

    CP01268 , 92005401 , 1356A6501 , HP 16700B-003

    HP 85056-60007 , HP N1203C , 4150/B XYCOM , GP570-LG21-24V

    XYCOM GP270-SC21-24VP , CIMR-H2.2G2 , JAMSC-B2110A , SGD-02BE-RY110

    SGMS-10AWABF , 5TI5-5020 , TEXAS INSTRUMENTS 505-4232 , 1760-L12BBB-ND

    IC200UAL004 , IC647BSP005 , IC692MDR741 , 6ES7 278-4BD32-0XB0

    TSXCPP110C , 07CR41-c12 , C4272-9012-C2 , PMM33A-MG30

    3GAA112001 , 57330001-N/4 , 720094-1 , DO820

    GJR5136400R0001 , NBUB-61C , RC221-T11 , YL787001-B/2

    HES5053U , 25915ZW81BRX , HSR35A2SS+600L , MKD112B-024-GG0-BN

    PVDM2-8 , SVX002A1-4A1B1 , FD4060L , D40RR20A

    A10BGOA , CE15CNS4AB , HP 10833C4MIBGPIB , HP 8153A

    HP E4805B , Triconex 3601E , XYCOM 70201-002 , XYCOM CF4GB

    CIMR-11WS.P , ETP608320 , JZSP-CLN21-05 , SGMGH-30D2A61

    Yaskawa CM091 , TEXAS INSTRUMENTS 500-2151 , 1756-BA2 , IC200ALG262

    IC646TBAPC002 , IC660ERD020 , 6ES7441-1AA04-0AE0 , TSXMRPP128K

    ABB 52614775 , AS98AC-T3.6 , PK266-E.0B , 3BSE006383R1

    57160001-A/13 , 6634231A1 , CDP-312R , EHFA301

    L700741A1-014 , PSS44/76-500F , Y2X9D0401 , PCI-1752U

    HBL5720UC , R900926346 , AA11VO260DRG , AX-SRM-T1E1

    13104AQD03 , HFC3060 , DH-321FRK , AGSHWCH120N05HS

    CUTLER HAMMER 10316 , S34N12S26 , HP 6012B, , HP E1610A

    7400165-510 , 97770-001 , XYCOM AGP3600-T1-D24-D81K , CACR-SR12TZ95MY01A

    DF8200689 , JRMSP-120CPS11100 , SGMAH-08AAN21 , USASEM-50FJ12

    TEXAS INSTRUMENTS 305-05N , 1734-OA2 , 1794-ACNR , IC646MDA300

    IC647WFLARM002 , 6ES7 235-0KD22-0XA0 , 140DAI34000C , 170ADO74050

    4GN5KA , PH533HG1-NA , 3BHT300051R1 , 48990001-MT

    6353C88H06 , AV41 , DSTD306 , IMDSO-01

    PCZ25 , TB557J3E00T15 , PCLD-785 , AA4VG125EP4DT1

    VT1600S3X , ZDR-10-DP2-54/210YM/12 , WS-X4306-GB , 3463D94G18

    868ER22 , E50-AH1 , C30EN2A , 15CLPT-1E

    505C806G18 , HP 5086-7749 , HP A6797-69101 , Tricon 3701

    XYCOM 83060C , XYCOM 82027-103-G , CACR-PR01AD4QR-Y75 , CPCR-MR05.2

    JARCR-XFL02B , SGM-01A3SU11 , USAFED-20-YR21 , TEXAS INSTRUMENTS 2490685

    TI305PROG , 1783-US5T , IC600CR610 , IC647PFL025

    IC697ALG440 , TSXMRPC007MC , STBDDI3425 , 264C901A07

    KXSMZ40H61-BC , 3-1899-58 , 3HAC3116-1 , 6053BC10000A

    ACS141-4K1-1 , DSQC-117 , HIEE300927R0101 , NTDO02

    SM1006S , AFP8551 , BOSCH DKE9405MUC , DR 30-2-32/100Y/V/5

    3WE10A11/LW120-60NZ4 , 3845-CCME/K9 , DH361NDK , MC10HN3A

    E57-LBL18A2EP , CE15-HNS-2AB , 5ACLE-150E , 92-00816-00

    HP 359645-B21 , HP 8753ES , HP 85029B , XVME 977

    XYCOM 1547-2000-512-DVDW-XP , 300262-2006 , CIMR-V7CU20P4 , JANCD-GCP01

    SGDH-50DE , UGCMEM-15-MC42 , PM550-100 , TEXAS INSTRUMENTS 520C-1102

    1769-PB4 , IC220PWR003 , IC647MT1M , IC694ALG391

    6ES7 590-0AA00-0AA0 , BMXXBP0400 ,  , EM599H-NA

    UDX5103 , 3HAB-4259-1/11 , 5SDF03D4501 , A75M-30-11-84

    DSMB144 , GVT-360-5792/CMA32 , NKPL01 , S3H-150DW

    YYT102 , SHX46L05UC , Rexroth 263991 , REXROTH DBDA 10

    76-168SDW , C28P-EDR-D , QBGFEP2020 , ECN2411CKEA29

    9560H1614A , 9-1891-4 , 1241D6501 , HP 1671D/030

    HP 85102A , HP N2267A , 4810ER+DC XYCOM , GPH70-SC41-24VP

    XYCOM GP377R-LG11-24V , CIMR-J7AA22P2 , JAMSC-B2602AV , SGD-08VN

    SGMS-20A6V-FJ11 , 6ES72121AA010XB0 , TEXAS INSTRUMENTS 5054332 , 1760-L18NWN-EXND

    IC200UDD110 , IC647CBL708 , IC693ACC313 , 6ES7 217-1AG40-0XB0

    TSXSCP114 , 07KR31 , C5511-9012 , PX243-01BA

    3HAA3563-AUA , 57350001-CN , 7220088-1 , DPT-63/S262-C20

    GJR-521-2300-R2 , NCPM01 , RE514 , YM316001-NB/2

    062309-405 , B20CS8NWWH , VTS06102X , TVM2.2-050-220/300-W1/220/380

    PA-MC-8T1 , SV9F50AC-5G0B00 , FD3090L , D320RIM1615A

    9996D11C03 , C300DN1B , HP 11352-66591 , HP 81633A

    HP E5071-62092 , Triconex 3636R , XYCOM 81862-103J , XYCOM EXEDV30DVD

    CIMR-E7U23P7 , ETX710003 , JZSP-CSM02-05-E , SGMGH-55ACA6E

    Yaskawa JDA003 , TEXAS INSTRUMENTS 500-5006 , 1756-DMD30K , IC200ALG431

    IC646TBLSS100 , IC660MLA101 , 6ES7460-3AA01-0AB0 , TSXRKY6EX

    ABB 57275812 , ASD13A-A , PK268-02A-C44 , 3BSE008518R1

    57160001-AU , 6635408D1 , CI540 , EI813F

    LLC14A5ASSAC , PTPGP72020E0010 , YB560103-AN , PCIE-1730

    SD-B3 068 030-00 000 , R 412 005 899 , R902066996 , RCP2-SA6-I-PM-12-300-P1-M

    LEP3600T52 , GMCP050K2CDR , DG324NRK , AE317RNS3T1

    10250T963C47-3?X , E57LBL30A2 , HP 6051A , HP E1669B-001

    TRICONEX TRICON 3000142-220 , XYCOM 3010T , XYCOM AGP4105-W1-D24 , CACR-SR15BY1SD-Y49-E

    DF8203003 , JRMSP-PS22A , SGMAH-A5BAA21 , UTC00036

    TEXAS INSTRUMENTS 305-12TLM-2 , 1734-OV2E , 1794-CE3 , IC646MPM001

    IC648MNT039 , 6ES7 214-1BD23-0XB8 , 140CRA93100 , 170ADM85010

    4LF452-MAL , PH544TG10-NB , 3BSC610042R1 , 4989-C13-A07

    6397100-RK , B204176 , DSTD197 , IMFEC11

    PEEL9900 , TB82TE1010410 , ADAM-3920 , A6VE160EP1

    4WE10E4X/CW110N9DA , REXROTH 5460025022 , WS-SVC-CMM-24FXS , AN16NN0B

    HRGCV34L , E30K-P14 , C25ENC430B , CUTLER HAMMER 1553-1

    37434 CUTLER , HP 5087-7008 , HP A7121A , TRICON?3004?

    88204-004-F , XYCOM 9000-DVDRW-USB , CACR-PR03AE3ER , CPCR-MR05C-H

     

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