Energy and Environmental
WhatsApp :+86-18144100983
NameDescriptionContent
  • Products related to categories: servo, frequency conversion, HMI, driver, distributed DCS, IPC (PC bus industrial computer), PLC (programmable control system), DCS (distributed control system), FCS (field bus system), robot and other products and technical services.
  • Applications: Wind energy, automobile, ship, transportation, manufacturing, aviation, petroleum, natural gas, thermal power, thermal power, nuclear energy, steel, metallurgy, mining, power and other industries
  • Controller PLC\Robot servo drive Electro-hydraulic servo valve\DCS system/Distributed control systemSystem rack\Communication adapter\Analog output\Analog input\
  • \Multi-meter energy meter\Ignition\circuit board\Crimp terminal\Electric ac drive\Low voltage DC power module\Electro-hydraulic\servo valve\Automatic control system\exchange\Network communication module
    controller\Processor module\dynamo\Electric machine\Servo drive\Touch screen\Input/output module\Water treatment monitoring system\Automobile\manufacturing system\Thermoelectric control system\
  • Digital output\Digital input\Mechanical protection system\High speed CPU
  • Electric power system\Chemical testing system\Petroleum control system\Tension monitoring system
  • DCS Distributed\control system\Steel control system\Steam\turbine system\Power generation system\
  • Thermal power generation system\Wind power system\Medium and high voltage frequency\conversion system\Precision motion system\Programmable control system\

E-mail

Password

Register Forgot password?
  • Singapore New Energy Corporation
  • Geylang Bahru Industrial Estate
  • การทางหลวงแห่งประเทศไทย
  • American Petroleum Group
  • Indian shipping works
  • Pakistan Gas Company
  • Russian Automotive Industry Corporation
  • Brazilian Mining Company
  • Bangladesh Hydro power Plant
  • Egyptian Iron and Steel Manufacturing Co
  • Groupe d’exploitation du métro français
  • Für meinen vater
  • BYD
  • Mongolia Wind Farm
  • Empresa venezolana de procesamiento de petróleo
  • alibaba
  • Sichuan Huayingshan Power Plant
  • Huadian Datong Power Plant
  • Guodian Shuangyashan Power Generation Co., Ltd.
  • Baosteel Group Xinjiang Bayi Steel Co., Ltd.
  • Guodian Changzhou Power Plant
  • Xingtai Iron and Steel Co., Ltd.
  • Guodian Fee County Power Generation Co., Ltd.
  • Yangzhou Second Power Plant
  • Sichuan Jintang Power Plant
  • Xingcheng Special Steel Co., Ltd.
  • Quzhou Yuanli Metal Products Co., Ltd.
  • Zijin Mining Group
  • (Bangladesh) Metro Construction Company
  • WuHan steel co., ltd.
  • MaAnShan  steel co., ltd.

DCS控制系统工程应用的抗干扰设计

From: | author:kongjiangauto | Release :2021-11-22 | 288 view: | Share:

DCS控制系统工程应用的抗干扰设计


   为了保证系统在工业电磁环境中免受或减少内外电磁干扰,必须从设计阶段开始便采取三个方面抑制措施:抑制干扰源;切断或衰减电磁干扰的传播途径;提高装置和系统的抗干扰能力。这三点就是抑制电磁干扰的基本原则。


   DCS控制系统的抗干扰是一个系统工程,要求制造单位设计生产出具有较强抗干扰能力的产品,且有赖于使用部门在工程设计、安装施工和运行维护中予以全面考虑,并结合具有情况进行综合设计,才能保证系统的电磁兼容性和运行可靠性。进行具体工程的抗干扰设计时,应主要以下两个方面。


  1 设备选型


   在选择设备时,首先要选择有较高抗干扰能力的产品,其包括了电磁兼容性(EMC),尤其是抗外部干扰能力,如采用浮地技术、隔离性能好的DCS系统;其次还应了解生产厂给出的抗干扰指标,如共模拟制比、差模拟制比,耐压能力、允许在多大电场强度和多高频率的磁场强度环境中工作;另外是靠考查其在类似工作中的应用实绩。在选择国外进口产品要注意:我国是采用220V高内阻电网制式,而欧美地区是110V低内阻电网。由于我国电网内阻大,零点电位漂移大,地电位变化大,工业企业现场的电磁干扰至少要比欧美地区高4倍以上,对系统抗干扰性能要求更高,在国外能正常工作的DCS产品在国内工业就不一定能可靠运行,这就要在采用国外产品时,按我国的标准(GBT13926)合理选择。


  2 综合抗干扰设计


   主要考虑来自系统外部的几种如果抑制措施。主要内容包括:对DCS系统及外引线进行屏蔽以防空间辐射电磁干扰;对外引线进行隔离、滤波,特别是原理动力电缆,分层布置,以防通过外引线引入传导电磁干扰;正确设计接地点和接地装置,完善接地系统。另外还必须利用软件手段,进一步提高系统的安全可靠性。


  四、主要抗干扰措施


  1 采用性能优良的电源,抑制电网引入的干扰


   在DCS控制系统中,电源占有极重要的地位。电网干扰串入DCS控制系统主要通过DCS系统的供电电源(如CPU 电源、IO电源等)、变送器供电电源和与DCS系统具有直接电气连接的仪表供电电源等耦合进入的。现在,对于DCS系统供电的电源,一般都采用隔离性能较好电源,而对于变送器供电的电源和DCS系统有直接电气连接的仪表的供电电源,并没受到足够的重视,虽然采取了一定的隔离措施,但普遍还不够,主要是使用的隔离变压器分布参数大,抑制干扰能力差,经电源耦合而串入共模干扰、差模干扰。所以,对于变送器和共用信号仪表供电应选择分布电容小、抑制带大(如采用多次隔离和屏蔽及漏感技术)的配电器,以减少DCS系统的干扰。


   此外,位保证电网馈点不中断,可采用在线式不间断供电电源(UPS)供电,提高供电的安全可靠性。并且UPS还具有较强的干扰隔离性能,是一种DCS控制系统的理想电源。


  2 电缆选择的敖设


   为了减少动力电缆辐射电磁干扰,尤其是变频装置馈电电缆。笔者在某工程中,采用了铜带铠装屏蔽电力电缆,从而降低了动力线生产的电磁干扰,该工程投产后取得了满意的效果。


  不同类型的信号分别由不同电缆传输,信号电缆应按传输信号种类分层敖设,严禁用同一电缆的不同导线同时传送动力电源和信号,避免信号线与动力电缆靠近平行敖设,以减少电磁干扰。


  3 硬件滤波及软件抗干扰措施


   信号在接入计算机前,在信号线与地间并接电容,以减少共模干扰;在信号两极间加装滤波器可减少差模干扰。


   由于电磁干扰的复杂性,要根本消除迎接干扰影响是不可能的,因此在DCS控制系统的软件设计和组态时,还应在软件方面进行抗干扰处理,进一步提高系统的可靠性。常用的一些措施:数字滤波和工频整形采样,可有效消除周期性干扰;定时校正参考点电位,并采用动态零点,可有效防止电位漂移;采用信息冗余技术,设计相应的软件标志位;采用间接跳转,设置软件陷阱等提高软件结构可靠性。


  4 正确选择接地点,完善接地系统


   接地的目的通常有两个,其一为了安全,其二是为了抑制干扰。完善的接地系统是DCS控制系统抗电磁干扰的重要措施之一。


   系统接地方式有:浮地方式、直接接地方式和电容接地三种方式。对DCS控制系统而言,它属高速低电平控制装置,应采用直接接地方式。由于信号电缆分布电容和输入装置滤波等的影响,装置之间的信号交换频率一般都低于1MHz,所以DCS控制系统接地线采用一点接地和串联一点接地方式。集中布置的DCS系统适于并联一点接地方式,各装置的柜体中心接地点以单独的接地线引向接地极。如果装置间距较大,应采用串联一点接地方式。用一根大截面铜母线(或绝缘电缆)连接各装置的柜体中心接地点,然后将接地母线直接连接接地极。接地线采用截面大于22mm2的铜导线,总母线使用截面大于60mm2的铜排。接地极的接地电阻小于2Ω,接地极*好埋在距建筑物10 ~ 15m远处,而且DCS系统接地点必须与强电设备接地点相距10m以上。


   信号源接地时,屏蔽层应在信号侧接地;不接地时,应在DCS侧接地;信号线中间有接头时,屏蔽层应牢固连接并进行绝缘处理,一定要避免多点接地;多个测点信号的屏蔽双绞线与多芯对绞总屏电缆连接时,各屏蔽层应相互连接好,并经绝缘处理。选择适当的接地处单点接点。
  • AMAT 0010-32695 Controller instrument system
  • ELMO G-TUB30/480ERSS0 480VAC GOLD TUBA DIGITAL SERVO DRIVE
  • ELMO G-TUB30/480FEHSNA2 480VAC GOLD TUBA DIGITAL SERVO DRIVE
  • ELMO G-TUB30/230EESS0 30A/230VAC GOLD TUBA DIGITAL SERVO DRIVE
  • ABB SPCU1D50 Automatic voltage regulating module
  • ABB SPAU 341 C SPAU341C Voltage regulator
  • KONGSBERG RMP420-Remote Multipurpose Input/Output
  • ABB CBI 22-P EX 3BDH000732R1 Binary Input CBI22PEX
  • ABB CTI 21-P Ex 3BDH000741R1 16/32 Inputs Ex, Temp. Input, SW Versio CTI21PEx
  • WOODWARD SPM-D10/YB Synchronizing Unit
  • AEROTECH UNIDEX100 MOTION CONTROLLER U100i
  • ROLLS-ROYCE PE9002 HELICON-X3 ETHERNET SWITCH U7
  • ABB 3BSE013175R1 GRBTU-01 PR:C Module Terminal Unit
  • ABB CT-APS.22 1SVR630180R3300 Analog I/I Signal Converter
  • Safemaster BN5930 Safety Relay
  • ABB 3BHE009017R0102 VLSCD Board XVC724BE102
  • ABB 3BHL000986P0006 controller UNIT FPX86-9377-A
  • MR627 P89627-0-2333400-300-401-601-701schneider ELAU Servo Drive
  • LDMTR-01 63940135F ABB Inverter Contro
  • ABB CHBX01R 2VAA008575R1 BASE MODUL
  • ABB CHBX01L 2VAA008574R1 BASE MODUL
  • ABB RMU610 2VAA008425R1 BASE MODUL
  • ABB 3BUS208796-501 Controller unit
  • ABB HIEE205014R1 HI220856-312/20 UNC4673AV1 Analog Measuring Card
  • ABB P8151B TMR Analog Input unit
  • ABB P8403 TMR Analog Inpu
  • ABB P8431 TMR Analog Inpu
  • ABB PPD117A3011 3BHE030410R3011 central processing unit CPU module
  • ABB PPD512A10-454000 3BHE040375R103E Control unit
  • ​ABB RET670 1MRK002816-AC 670 series
  • ABB PFCL201CE 50KN 3BSX802939108 Horizontal force measurement
  • ABB LS4000 Diode laser analyzer
  • ABB G2000A5.7ST Used for excitation drive systems G2000A57ST
  • ABB PPD513AOC-100440 3BHE039724R0C3D 800 D513 Used for excitation drive systems
  • ABB XUD194 XUD194A 3BHC018137R0001 Used for excitation drive systems
  • ABB MT-91-ARC FP A Operator Panel RS232C 14-0V 60V 0,5A
  • ​ABB REC670 Relion 670 SERIES 670 series
  • ABB Bailey Infi90 SPSED01 Provides first 16 Digital Inputs
  • ABB UAD155A0111 3BHE029110R0111 matching capacitors are used for the excitation drive system
  • ABB CDP 312R CDP312R ACS800 AC Drive Control Panel Keypad 57619414 A 1/2
  • ABB system TPPB-02 card module
  • ABB Bailey Infi90 SPNPM22 Network Processing Module
  • ABB 3HAC17346-1/01 Rotational ac motor
  • ABB MNS iS MView Human Machine Interface 1TGE120020R0614
  • ABB UFC760BE145 3BHE004573R0145 content board
  • ABB GRID BREAKER UNIT VLM70 3BHE034262R0001 PCS6000
  • ABB 3BHL000986P controller UNIT FPX86-9364-A
  • ABB S-053M 3BHB012897R0003 ACS2000 The matching capacitors are used for the excitation drive system
  • ABB Inspirational system 3BHE050077R0102 UNS0881b-PV2
  • ABB HS810 3BDH000305R0101 connection device
  • ABB PF900-NR 3BDH000357 controller products
  • ABB KUC755AE101 3BHB005245R0101 Control System
  • Abb YPP110 digital processor module 3asd573001a1 YPP110A
  • ABB GMKP2800-32IBY The matching capacitors are used for the excitation drive system
  • ABB PS203PRESPMCPS Controller unit
  • ABB 216MB66 HESG324510M1 Controller products
  • ABB SPAJ140C Earth-fault relay
  • COMPRESSOR CONTROLS CORP 17-550555-001 IOC-555-D RS-485 Card
  • Woodward AMG2 Engine/Generator Controller LR21232
  • ALSTOM E64L1 high-performance power electronic device Professional service L54E1100EC00
  • ALSTOM CARD URVIC-54-322137 L54E2900TZ00
  • ALSTOM EXCITATION FAULT DETECTION, MODEL MDEX1 L54E2900XK00
  • ALSTOM POWER CARD FOR 3PHASE REGULATOR MODEL CPRT1 L54E1100BC00
  • ALSTOM ANALOG I/O CARD MODEL ESVI1 L54E1100BB00
  • ABB DISPLAY CARD ARTN1 L54E2901TW00
  • ABB DCF803-0050 3ADT209026R0001 Excitation unit module group
  • CONTROL MODULE – DRIVE UNIT 750203/806 100–250 V AC/DC ABB
  • Woodward ESDR4 Current Differential Protection Relay ESDR405-h0018B
  • ABB 3BHB007438R0001 WE-72-10/CH POWER UNIT 64421956
  • ABB B5LA HENF327886R0001 rackmount
  • ABB P7LA HNEF105323R0002 rackmount
  • ABB PPC322 BE01 PSR-2 processor + fieldbus HIEE300900R0001
  • ABB REF620C_F NCFNAAAAABC2DNN1XF Feeder Protection and Control
  • ABB P72140-4-0788740 CTI21 Temperature Input 16/ 32 Inputs
  • ABB DYTP123A 61430001-TW Control drive board
  • ABB DYSF118B 61430001-XG Control drive board
  • ABB CI535V26 3BSE022161R1 SPA Server protocol SPA Bus
  • ABB 1MRK002133-ABr02 RED670 I/O-modules 670 series
  • ABB 3BHB019265R0410 acs6000 Controller unit
  • ABB HIEE205012R0001 UNC4672A,V1:Analog Measuring Card
  • ABB REL561 1MRK002496-AC Protection Relay
  • ABB REL551 1MRK002480-AE Protection Relay
  • ABB RED521 1MRK002003-BA Protection Relay
  • ABB REC650 1MRK008514-CB Relion® 650 series
  • ABB RER103 Bus Connection Module
  • ​ABB REF545 KB133AAAA feeder terminal
  • GE IS200JPDFG1A DC INPUT 94 V DC DC POWER DISTRIBUTION MODULE
  • ABB Bailey Infi90 IMICV01 Servo Valve Interface Module
  • ABB 3ASC25H215E DATX131-equipped Torque observer board
  • ABB DASD001 3ASC25H241 mounted on Process I/O-board
  • ABB XVC768AE102 3BHB007211R0102 Board
  • ABB 531X306LCCBAG3 Communication Card
  • ABB NDCU-33CX 3AUA0000052751 Branching unit kit
  • ABB APBU-44C 4X KIT 68242371 Branching unit kit
  • ABB inverter mainboard terminal board NAMU-01C 64702475D
  • ABB L003748-AR 3BSX108237R300 mounted on Process I/O-board
  • ABB Communication Module COM0034 2RCA023019A0004C
  • ABB REU615E_D HBUAEAADNCA1BNN1XD Voltage Protection and Control
  • ABB S-113H 3BHB018008R0003 Power unit ACS 6000 System
  • ABB PM858 3BSE093350R1 Control unit
  • abb AI02J 16-CH with HART, Quick Response
  • ABB DSCA190V 57310001-PK communication module
  • ABB XVC768115 3BHB007211R115 Board
  • ABB DAPI100 3AST000929R109 mounted on Process I/O-board
  • ABB PCD530A102 3BHE041343R0102 UNITROL processor unit
  • ABB CMA130 3DDE300410 Basic Controller Panel Unit
  • ABB PCD237A101 3BHE028915R0101 UNITROL processor unit
  • ABB CI627A 3BSE017457R1 Communication Interface
  • ABB REF543 KB127AAAA feeder terminal
  • ABB PFCA401SF 3BSE024387R4 Control Unit Millmate 400
  • ABB HIEE401807R0001 CMC910A AMC3x Flash Memory Subboard
  • ABB UNITROL1005-0011 ECO 3BHE043576R0011 Drive
  • ABB XVC769AE101 3BHE006373R0101 Pulse transformer IGCT
  • ABB UFC765AE102 3BHE003604R0102 Pulse transformer IGCT
  • ABB CI930F 3BDH001010R0002 Communication Interface, PROFIBUS DP Master
  • ABB REM620A_F NAMBBABA33E5BNN1XF Motor Protection and Control
  • ABB 1TGE120010R... Rev.A controller unit
  • ABB Bailey NSSM01 Superloop Storage 6636896 AI 15VDC 27.4VA
  • ABB Bailey IEMPU02 Digital Input Module
  • NWX511a-2/R HESG112548R12 ABB controller system card
  • ABB IISAC01 Analog Control Station (SAC)​
  • NTLS01 ABB Bailey Control and I/O TERMINATION UNIT
  • ABB 8025-235 Controller products
  • ABB Exchange PU512V2 3BUR001401R1 Real Time Accel. w/ DCN
  • ABB 216NG61A HESG441633R1 HESG216875 Controller products
  • ABB SCYC51020 58052582G Control Module
  • ABB UFD203A101 3BHE019361R0101 Signal unit module
  • ABB 3BHE012551R0001 UAD142A01 Controller products