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產(chǎn)品簡(jiǎn)介
PC-0085-001
PC-0085-001
產(chǎn)品價(jià)格:¥1
上架日期:2019-09-10 18:27:39
產(chǎn)地:PC-0085-001
發(fā)貨地:福州
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    PC-0085-001現(xiàn)貨 in stock! 歡迎來(lái)電咨詢~??!

    PC-0085-001,

    PC-0085-001

    PC-0085-001


    分散控制系統(tǒng)(DCS)已在大型火力發(fā)電廠廣泛應(yīng)用,并取得諸多經(jīng)驗(yàn);對(duì)于中小型的企業(yè)自備火電廠或區(qū)域熱電廠,DCS系統(tǒng)的應(yīng)用正在逐步推廣,但其設(shè)計(jì)、施工及維護(hù)經(jīng)驗(yàn) 尚有欠缺,需要不斷摸索和總結(jié)。
      其DCS系統(tǒng)面臨的重要問(wèn)題之一就是如何有效地抑制干擾,提高控制系統(tǒng)的安全性、穩(wěn)定性與可靠性,由于技術(shù)儲(chǔ) 備不夠完善和人員運(yùn)行經(jīng)驗(yàn)欠缺,中小型火電廠更應(yīng)重視此 點(diǎn)。電源穩(wěn)定供應(yīng)、信號(hào)正確分類及電纜合理敷設(shè)、接地有效 實(shí)施作為抑制干擾、提高系統(tǒng)可靠性的有效方法,值得廣泛探討與研究。
      通過(guò)分析中小型火發(fā)廠DCS系統(tǒng)對(duì)電源、信號(hào)、接地的抗干擾要求,結(jié)合工程經(jīng)驗(yàn),闡述了這三方面的抗干擾設(shè)計(jì)方 案,提出了施工及維護(hù)中的一些注意事項(xiàng),供項(xiàng)目設(shè)計(jì)、施工 以及維護(hù)參考,以便實(shí)現(xiàn)DCS的有效投入,保證電廠安全穩(wěn) 定運(yùn)行。
      2 DCS系統(tǒng)抗干擾要求
      為提高電廠DCS系統(tǒng)的測(cè)量水平和控制精度,保證控制 系統(tǒng)的安全、穩(wěn)定、可靠運(yùn)行,熱控專業(yè)在設(shè)計(jì)、施工、維護(hù)階段必須合理考慮DCS系統(tǒng)在電源、信號(hào)、接地方面的抗干擾要求。
      2.1 電源要求
      電源安全性是任何供電系統(tǒng)必須滿足的最基本條件。首先在前期設(shè)計(jì)中在沒(méi)選擇電源和開(kāi)關(guān)型號(hào)時(shí),充分考慮所有設(shè)備最大工作電流,并留出足夠余量,方便日后增加設(shè)備。其次在選擇電源線路時(shí),不僅要求根據(jù)電流容量選擇合適線徑,而 且要求有足夠機(jī)械強(qiáng)度,具有防腐性,并且能夠阻燃。
      電源可靠性和連續(xù)性是DCS穩(wěn)定運(yùn)行的前提。DCS供電 系統(tǒng)除給DCS供電外,不應(yīng)再接入其他系統(tǒng)和設(shè)備,如果無(wú) 法實(shí)現(xiàn)獨(dú)立電源,那么可以通過(guò)加裝電源隔離裝置的方法(常 用UPS不間斷電源)來(lái)實(shí)現(xiàn)。供電電源應(yīng)有兩路電源供電,一路應(yīng)采用交流不問(wèn)斷電源(UPS),另一路來(lái)自廠用低壓工 作段電源。兩路電源宜設(shè)自動(dòng)電源切投裝置,切投時(shí)間應(yīng)確保 不影響控制系統(tǒng)的運(yùn)行。任何一路電源失去或故障不應(yīng)引起控 制系統(tǒng)任何部分的故障、數(shù)據(jù)丟失或異常動(dòng)作;任何一路電源 失去都應(yīng)在控制系統(tǒng)獲得報(bào)警。
      2.2信號(hào)要求
      DCS的輸入、輸出信號(hào)線是干擾信號(hào)進(jìn)入DCS的途徑之一,一般來(lái)說(shuō)信號(hào)越弱受干擾的影響越大。首先應(yīng)對(duì)信號(hào)分類 如下:
     ?、買類信號(hào):熱電阻信號(hào)、熱電偶信號(hào)、毫伏信號(hào)、應(yīng)變信號(hào)等低電平信號(hào)。
     ?、冖蝾愋盘?hào):0~5 V、1~5 V、4~20 mA、0~10 mA模 擬量輸入信號(hào);4~20 mA、0~10 mA模擬量輸出信號(hào);電平型/觸點(diǎn)型開(kāi)關(guān)量輸入信號(hào);脈沖量輸入信號(hào);24VDC小于50 mA的阻性負(fù)載開(kāi)關(guān)量輸出信號(hào)。
     ?、邰箢愋盘?hào):24V~48VDC感性負(fù)載或電流大于50 mA 的阻性負(fù)載的開(kāi)關(guān)量輸出信號(hào)。
     ?、堍纛愋盘?hào):110VAC或220VAC開(kāi)關(guān)量輸出信號(hào),此類信號(hào)的饋線可視作電源線處理布線的問(wèn)題。
      其中,I類信號(hào)很容易被干擾,Ⅱ類信號(hào)容易被干擾,而Ⅲ和Ⅳ類信號(hào)在開(kāi)關(guān)動(dòng)作瞬間會(huì)成為強(qiáng)烈的干擾源,通過(guò)空間環(huán)境干擾附近的信號(hào)線。
      為了有效減小各個(gè)信號(hào)之間的干擾,不同類型的信號(hào)電纜與DCS相連時(shí),信號(hào)電纜的設(shè)計(jì)和布置應(yīng)滿足以下原則:
     ?、賹?duì)于I類信號(hào)電纜,最好采用屏蔽雙絞電纜。
    ?、趯?duì)于Ⅱ類信號(hào),盡可能采用屏蔽電纜,其中Ⅱ類信號(hào)中用于控制、聯(lián)鎖的模入/模出信號(hào)、開(kāi)入信號(hào),必須采用屏蔽 電纜。
     ?、蹖?duì)于Ⅳ類信號(hào)嚴(yán)禁與I、Ⅱ類信號(hào)捆在一起走線,應(yīng)作為220 V電源線處理,與電源電纜一起走線,有條件時(shí)建議采 用屏蔽雙絞電纜。
     ?、軐?duì)于Ⅲ類信號(hào),允許與220 V電源線一起走線(即與Ⅳ類信號(hào)相同),也可以與I、Ⅱ類信號(hào)一起走線。但在后者情 況下Ⅲ類信號(hào)必須采用屏蔽電纜,最好為屏蔽雙絞電纜,且與 I、Ⅱ類信號(hào)電纜相距15cm以上。
      ⑤屏蔽電纜的屏蔽層必須只有一點(diǎn)接地,并且要接地 良好。
     ?、藿^對(duì)禁止大功率的開(kāi)關(guān)量輸出信號(hào)線、電源線、動(dòng)力線等電纜與直接進(jìn)入DCS系統(tǒng)的I、Ⅱ類信號(hào)電纜并行捆綁。
     ?、呓^對(duì)禁止采用一根多芯電纜中的部份芯線用于傳輸I類 或Ⅱ類的信號(hào),另外部分芯線用于傳輸Ⅲ類或Ⅳ類信號(hào)。
     ?、鄧?yán)禁同一信號(hào)的幾芯線分布在不同的幾條電纜中(如三線制的熱電阻)。

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    HP 64708-66505 , HP E1693A , TRICONEX TRICON 238718 , 115-1200-512-2K

    XYCOM APL3600-ATP69X0-01 , CACR-SR-15SZ1SS-Y125 , DF9200674-D0 , JUSP-DCP

    SGMAS-02ACA221 , UTOPH-81AWF , TEXAS INSTRUMENTS 3051NIM , 1746-FIO4V

    1794-ID2 , IC646MPS101 , IC655APU500 , 6ES7 223-1PL22-0XA8

    140CPU67160C , 170ANR12090 , 5GK18KA , PH5913H-NBA

    3BSC950004R1 , 503284-890 , 660W-MISC-3311 , B75S-1F

    DSTUA3 , IMMFP02 , PGM01 , TC530

    PCLD-8712 , BOSCH 1070081259-100 , REXROTH 262-380-400-1 , REXROTH 9-810-161-167

    WS-C4948-10GE , AN16DN0BB , HMCPS003A0C , E30-EF

    C10-CN30A , 1492D82G03 , 14977H32A CUTLER HAMMER , HP 5087-7137

    HP AD7451A , TRICON TRICONEX 3608E , IC1500T-ABNOS06 , XYCOM 9450-0622514010000

    CACR-PR05BC , CPCR-MR-152G , JEFMC-C027-007E , SGM-02A316D

    USAGED-09AS2KE , TEXAS INSTRUMENTS 2497991 , TMS320C31PQL40 , 1785-L20B

    IC600LX612 , IC647PRCUMK , IC697CMM711 , NWBM85S232

    STBACI1230K , 2668180-89/3 , OSSG40D , 35416AB1

    3HAC5978-1 , 614B842U01 , ACS350-03U-01A2-4 , DSQC-266C

    HSEG332084R0001 , OB99CO , SNAT7090 , MIC-3753

    1070078691-103 , 109-0942-4B5-09 , R165141320 , 2821-V3PN/K9

    D26MR4O4A , LIT01958 , E57-12LE10-A , CCH2100

    511H1150-5 , PCC-0030H , HP 37900D , HP 8924C

    HP E4419B , 9406ACT , XYCOM 3115-0113111015003 , 69ZBM095HCRZB

    CIMR-VGU4015 , JANCD-GSP01 , SGDM-01BDA , UGJMED-80MA20F

    PM550-924 , TEXAS INSTRUMENTS 545-2501 , 1771-CD , IC610MDL107

    IC647NDT000 , IC694MDL635 , 6ES7131-6BH00-0BA0 , BMXFTW501

    1N050TL , FBLD120CW-K4 , UHG100-2B , 3HAB7215-1

    5SGA25H2501 , ABB 5692435L , DSPC-150 , HEDT300371R1

    NKTU0175FT , S5H400EWS4 , cPCI-R3700A , BOSCH 0513300202

    A10VD45DRG/52RPUC64NOO , R900912557 , GS-020051-00440 , ASA5520-AIP40-K9

    10337H178-66EO , ECN1614AAA , CN15-DN3AB , 9-1518-22

    10250T-B63 , HP 1990-1295 , HP 85330-60006 , HP N8973A

    PM9403T/9403T , ST401-AG41-24V , XYCOM GP570-SC21-24VP , CIMR-JUBA0002BAA

    JAMSC-B2806V , SGD-A04AS , SGMSH-30DCA61 , 6MT13-F05L

    TEXAS INSTRUMENTS 505-4732 , 1762-IF2OF2 , IC200UEC208 , IC647DMC010

    IC693ALG391 , 6ES7 223-3BD30-0XB0 , TSXCBRY2500 , 07ZE40E

    C7045-9012 , PX-245-01AA , 3HAA3560-GTA , 57360001-EB/1

    7526A83G23 , DSAI-130 , GJR5240400R105 , NDPI-04

    RINT5611C , YPQ104C , SHE68E05UC , A10VSO18DR/31R-PKC62N00-S0169

    VT 5002-25/R5E , MHD112C-058-PGO-BN , N7K-M132XP-12L , SPX003A1-4A1B1

    FC3100 , D26MR40-T , 9656H402AX , BF55F

    HP 11667A , HP 83410C , HP E6403A , Triconex 5481

    XYCOM 86864-002-B , XYCOM EXM-DDO8UT , CIMR-F7U25P5 , GPD315/V7

    MC-1000VS , SGML-08AF12 , YPET31001-1-0 , TEXAS INSTRUMENTS 500-5024

    1756-IB16D , IC200CPU005 , IC646TDV915 , IC660SLA104

    6ES7153-1AA03-0XB0 , TSXDEY16A3C , ABB 57772280 , ASM46AA-H100

    PK299-03AA-A2 , 3BSE012632R1 , 57160001-LF , 6637033A3

    CM30/100S0E0/STD , EV900-1670-22 , M2AA071B , PVM02

    YB161102-AK , USB-4716 , HZF1.1-W25N , VT11025-16

    A11VO60DRG/10L-NSC62N00 , WS-C3560-24PS-S , XTCF200G00B , GHB3090

    D80JE10A , AA33P , 10250T-463-3 , SNT4LP03K

    HP 66101A , HP E2078-62101 , TRICONEX TRICON 7400169-310 , PM101323

    XYCOM AST3301B1D245PK , CACR-SR20GB1BF , DI-16H2 , JUSP-NS500

    SGMAS-A5A2AJ161 , UUX000061 , TEXAS INSTRUMENTS 30522P , 1746-IH16

    1794-IH16 , IC646MRC075 , IC655MDL512 , 6ES7 313-5BF03-0AB0

    140CPU43412A , 170INT11003C , 5GN25KA , PK233PB

    3BSC980002R336 , 50VM1000 , 6615592K1 , BC25-30-10-01

    DT450/A185 , IMSDO01 , PHBAIN2200S100 , TG30

    PCL-10251 , AA6VM107HA1T/63W-VSD517A , REXROTH 272-021-681-0 , 1605-704-31

    WS-C3750X-24P-L , AE16AGY2GB , HMCP250W5 , E29-TM

    C1000K3A , 1360-3 , M3SRG0800 , HP 53131A

    HP C9264CB , TRICON TRICONEX 840119 , XVME-600 , XYCOM 9457CAP

    cacr-pr44bc3csy728 , CPCR-MR374 , JEPMC-CM210A , SGM-02B212

    USAGED-20L22K , TEXAS INSTRUMENTS 25876818005 , VPU500-3104 , 1786-FS10

    IC600PM542 , IC647SCL001 , IC697CPU731 , 140XSM00200

    STBART0200 , 2668184-554/1 , PH2610-E2.9B , 35EK90

    3HAC7404-1 , 6200DP10800E , ACS501-005-4-00P2 , DSQC332(3HAB9669-1)

    ICMK14F1ICMK14F1-K10.0 , OESA-F200JT62SW , SNAZ-7640F , PCI-1713U-BE

    SHE43R55UC , VT5012-S20 , MS4A2.1/12V , 2811-CCME/K9

    CRDC320T53W , LGH3630NN , E51-SCN , CB000032010

    505C633G02 , 8890A-7501 , HP 4145A , HP 8970B

    HP N4256A , Xycom 9450-2486616010000 , XYCOM 340-000206001110 , 87820-10001

    CIMR-VU4A0002JAA , JANCD-I007-1 , SGDM-15ADA-R , UGQMEM-01SNQ71

    PS800201062752?10 , TEXAS INSTRUMENTS 555-1104 , 1771-IBD , IC610PER151

    IC647NGV000 , IC694MDL754 , 6ES7132-6BD20-0CA0 , BMXFCC053

    1SAX711001R0001 , FBLM5120W-10-K5 , UPD59913H-A , 3HAB8101-11

    5STB13N6500 , ABB 57520001GD1 , DSQC103 , HEIE210050R1

    NKTU11-11 , S6HQ800BWAS4 , ADAM-5017 , 0811-332-105

    109-0852-4B01-07 , ZDR6DP2-42/150YM/12 , ZDR10VB5-31/50Y , AS54-AC-RPS

    E58-30DP150-HLP , ECN-05A1AAA , CK0100E2AFB , 9-1323-53

    10250T-S24 , HP 2XV9450-1AR22 , HP 8562A , HP ProLiantDualDL380G4

    XYCOM 70957-014 , VMIVME-4941 , XYCOM GPPRO-CNT01W-P03 , CIMR-MTIII-11K

    JAMSC-C8130 , SGD-A2CPY14 , sh10va-s50a6 , 6MT33

    TEXAS INSTRUMENTS 505-5103 , 1762-L40AWA , IC200UEX010-24 , IC647DNP001

    IC693CHS397 , "6ES7 954-8LF02-0AA0 , TSXCANCA100 , 086362-001

    C7886-9012K , PX245M-03AA , 3HAA3563-AMA/0 , 57360001-MS1

    771311AAAAZWAR , DSAV-112 , GJR5251400R0101 , NDSO04

    RK318624-AN , YT212001-AM/7 , Bosch 0 608 830 123 , 4WREE10E50-22/G24K31/A1V

    Bosch 0 811 104 008 , MHD093C-058-PGO-BN , ME-3400G-12CS-A , SLDN600

    F3S03C , D26-MR112A , 9586H6171A , AR440X

    HP 11730A , HP 83447A , HP E7495-60069 , Triconex 8321

    9450-0622514010000 , XYCOM EX-VIEWER-LICENSE , CIMR-F7U4075 , GPD515C-A049

    MR5N20115 , SGMP-01A314 , 5MT11A03L , TEXAS INSTRUMENTS 5005035

    1756-IG16 , IC200EBI001 , IC646TPR300 , IC660TBA105

    6ES7972-0BB41-0XA0 , TSXDEY16D2 , ABB 58423831 , ASM66AK-T7.2

    PK543NBA , 3BSE013230R1 , 57160001-TK , 6637804C1

    CS401600432 , FDC86-UNIT1B , MD3B1SPFRG , QALE-201

    YB161102-BN , USB-5830 , HVE02.2-W018N , P-110806-0020

    P-068999-00005 , WS-C2960G-48TC-L , WMS3C13 , GFR60M

    D77A-RQ8 , A50ENO , 10250T-34Y , DH367URK

    HP 6628A , HP E2697A , TRICONEX TRICON 7400058-390 , Xycom 111266-001

    XYCOM CA3BLU1201 , CACR-SR30BE12G-C , DP9420007 , JUSP-RG002

    SGMD-22AWA-YR14 , VZA40P4BAA , TEXAS INSTRUMENTS 30552T , 1746-N2

    1794-NM1 , IC646NCN020 , IC655PWR501 , 6ES7 317-2EJ10-0AB0

    140CPS41400 , 170MCI02080 , 5GU5K , PK243A1A-SG10

    3BSC980004R800 , 51G-B204-0312222 , 6623835F3 , BHD15C2P-1

    E2N-A16 , INICT-01 , PHBRMU10010000 , TK811V050

    PCI-1610B-DE , PXMC-04-000 , GL62-4-A , REXROTH 0-822-337-110

    WS-C3750G-48PS-E , A201K5CXZ1 , HMCP050G2C , E26BPV2

    C0200-E4DFB , 1351B-6501 , LD3600FS , HP 53310A

    HP DSO3202A , TRICONEX TRICON 4328 , 70682-101 , XYCOM 9462-513316-TFT-T-F

    CACR-SR01AB1ER , CPCR-PF01A , JEPMC-MB002 , SGM-02W3TE11

    USAMED-03B21 , TEXAS INSTRUMENTS 2587681-8035 , 990010622A1 , 1786-TCT2BD1

    IC600WD005 , IC647SHR050 , IC697CSE924 , 140XBP01600C

    STBAVO0200 , 2668-170-251 , PH264-E1.5 , 390212X

    3HEA505956/00 , 6214BZ10110F , ACS-PAN-A-2 , DSQC509

    ICSI08E1-230 , OETL-NF800ASW , SR511 , PCI-1734-CE

    Bosch 0280202091 , VT-HACD-1-13/V0/1-D-0 , REXROTH IKS0540 , 2650XM-DC

    CN55BN3AB , LA2600F , E51-KT813 , CAH2200

    42-10300-02 , CH115AF , HP 41952B , HP A2363A

    HP 1157A , 9487-27B2118050000 , XYCOM 3512-03F114003101F , ADE-4C2C

    CIMR-VZBA0006BAA , JANCD-MBB02-2 , SGDM-75ADA , UGRMEM-02MSW12

    RI-CTL-W02G , TEXAS INSTRUMENTS 560-2123 , 1771-IN , IC630MDL316

    IC647NQD000 , IC695ACC302 , 6ES7134-6GF00-0AA1 , BMXFCW301S

    1SBP260150R1001 , FX250B , UPH566H-A2 , 3HAB8101-2

    5STP06D2600 , ABB 58944106 , DSQC202 , HEIE420334R1

    NLIM0-1 , SA168K03 , FSC-1621VD , BOSCH 0445020043

    ADK6530001 , ZDR10VP5-31/200YM , Rexroth Indramat DEA5.1 , AS5300-120VOIP-A

    1785T PMPS 1700 , ECN0508CAA , EHD14K , 9115H167K

    CUTLER HAMMER 3792-11 , HP 33220A , HP 8566A , HP RSVL-0107A

    9450-29H432G010000 , VMIVME 2510B , XYCOM LT3201-A1-D24-C , CIMR-P5M-43P71F

    JAMSC-IF70V , SGDA-A3CSY203 , SMC-2000-1IM , 6XV18502MH20

    TEXAS INSTRUMENTS 5056108A , 1762-OW16 , IC200UEX210 , IC647G90C

    IC693CPU340 , 6AV2124-0JC01-0AX0 , TSXCANCBDD5 , 10018LR

    C8601-9012K , PXC43-02AA-C3 , 3HAB2001-1/4 , 5751017-L

    8-061588-002 , DSBC172 , GJV3072409R1 , NF321-3PBJC

    RK671213-AA , YT204001-DF , 220 820 11 61 , R900317172

    REXROTH 0-821-100-069 , MKD112B-048-GP0-BN , IAD2421-1T1 , A10EG0

    ELKD3300X15 , D200-PSA120 , 9-584-1 , A50DNOAB

    HP 11807B-H04 , HP 8350B , HP E8251A , TRICONEX TRICON 4500

    9450-713316-T , XYCOM FANKITPAN2 , CIMR-G22AS2-2001 , HI-10E2TUT

    NSR-S307E , SGMP-02A312 , 5MT13-D03L , TEXAS INSTRUMENTS 500-5047-A

    1756-L62 , IC200MDD848 , IC646VSCEMK , IC660TSA100

    6GK1713-5FB63-3AA0 , TSXDSY16T2C , ABB 58976539 , AXH230KC-20

    PK545-NB , 3BSE015001R1 , 57160001-ZB , 6637964A1

    D-20-0-1102 , FP-1002 , MICRO-SCAN , QDCU601

    YB161102-CRC , PCI-1612C , TVM 2.2-50-220 , LFA25GWA6X/A10/12

    Rexroth 0 608 600 007 , WIC-4ESW , 2D82302G01 , GD3030

    D64RP18 , A415VN000D , 10250T-16532 , HP 8590

    HP 6643A , HP E3610A , TRICONEX TRICON 4000043-310 , XICON 271-16K

    XYCOM CA3CBLQ01 , CACR-SR30SB1BSY124 , DR2-02AC , JVOP-112

    SGME-02AF12 , XU-ACL3701 , TEXAS INSTRUMENTS 3058RLY1 , 1746-NR4

    1794-OE12 , IC646NGS000 , IC660BBA106 , 6ES7 322-1HF01-0AA0

    140CHS41020 , 170XTS04200 , 5RK40GN-AUL , PK243B1-SG7.2

    3BSE000460R1 , 52820083-AC , 6624502M1 , BN50SP-4CA

    E500DU-500 , INLIM03 , PIN-3A , TU814V1

     

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