描述
DCS网络故障
(1)某电厂西屋WDPF控制系统,由于多次改造系统增加了大量测点和自动控制回路,系统负荷率高达70%以上,造成网络通讯堵塞,多次出现操作员进行操作、切换画面时间过长、画面黑屏等问题。后经升级改造为OVATION系统,系统正常。
(2)某电厂600MW机组负荷508MW,工况稳定,汽轮机所有调门突然大幅摆动,经检查故障原因是机组运行时M5控制器的转速信号短时间内由3000r/min变成了0r/min,又马上恢复,调门摆动的原因也是M3和M5通讯时出现掉数据现象,导致Trip Bias(跳闸偏置)信号在机组运行时由0变为1,引起所有调门大幅摆动。对该问题采取措施:对PCU控制总线的通讯信号进行多重化处理,对通讯信号增加一定延时,躲过通讯信号瞬间跳变;对重要的通讯信号采用了通讯冗余。
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主营:世界知名品牌的PLC、DCS系统备件模块
①Allen-Bradley(美国AB)系列产品》
②Schneider(施耐德电气)系列产品》
③General electric(通用电气)系列产品》
④Westinghouse(美国西屋)系列产品》
⑤SIEMENS(西门子系列产品)》
⑥销售ABB Robots.FANUC Robots、YASKAWA Robots、KUKA Robots、Mitsubishi Robots、OTC Robots、PanasonicRobots、MOTOMAN Robots。
⑦estinghouse(西屋):OVATION系统、WDPF系统、MAX1000系统备件。
⑧Invensys Foxboro(福克斯波罗):I/A Series系统,FBM(现场输入/输出模块)
顺序控制、梯形逻辑控制、事故追忆处理、数模转换、输入/输出信号处理、数
据通信及处理等。Invensys Triconex:冗余容错控制系统、基于三重模件冗余(TMR)
结构的zui现代化的容错控制器。
⑨Siemens(西门子):Siemens MOORE,Siemens Simatic C1,Siemens数控系统等。
⑩Bosch Rexroth(博世力士乐):Indramat,I/O模块,PLC控制器,驱动模块等。
◆Motorola(摩托罗拉):MVME 162、MVME 167、MVME1772、MVME177等系列。
PCB EDGE SAW CUTTING MACHINE
BASLER SR4A2B03A3E STATIC VOLTAGE REGULATOR
BARCO 5100 PHU Projector
NORDSON 296415A DISPENSING CONTROL STATION
Wild Heerbrugg Makrozoom 1:5 lense
Fine Sodick BENT-01 B0220 Board P.C.4181295
ROSS Engineering E100-NC-100-2-0 High Voltage Contacto
Performance Feeders 24-C Vibratory Bowl 24”
Acterna MMS-4305 AMPS/ PCS/ TDMA Mobile Service Test
AGILENT 79916AP-574 APS HYPERSIL HPLC CARTRIDGE
AGILENT 79923OP-584 ODP-50 ASAHIPAK HPLC CARTRIDGE
1100 Corner Post Heavy Duty Edge Protectors 3x3x44″
EBARA RAD015-95018 REV3 CONTROL BOARD
SIEMENS FXD63B225 ITE CIRCUIT BREAKER
FOXBORO P0400QL DUAL FLOPPY DRIVE
79250504BVV CIRCUIT BOARD
ADEPT EXC CONTROLLER
MODICON 140-CPU-113-03 CONTROLLER
11 802587 RUBBER SWEEPER ATTACHMENT 58”
KEPCO RA-22-6 PBX40-0.5MAT DC POWER SUPPLY
AM FAN 73-00026170 FAN HOUSING
KEPCO RA-22-6/ PBX40-0.5MAT DC POWER SUPPLY
FOXBORO 136-4-3 STB COMPUTING RELAY
73-00027430 SHAFT
KEPCO PBX40-0.5MAT DC POWER SUPPLY
Yachiyo YK-20 Bowl & Linear Feeder 12″ W/ Controls
Intergraph MDSP05608 15 IMACLR Monitor
5/8” CORRUGATED PLASTIC TUBING CABLE ORGANIZER 7000′
Brookfield RUF Viscometer
ESI 262 DB62 Resistance Comparator and Decade
WESTINGHOUSE 9966D84G01 REV28B POWER SUPPLY BOARD
36 POWERSTAT 10C VARIABLE AUTOTRANSFORMER
Exabyte 17D DLT 7000DIFF Library Hard Drive
CUTLER-HAMMER IQMESIIN1 IQ MULTIPOINT ENERGY SUBMETER
117 OMRON SRT2-VID08S REMOTE TERMINALS
110 OMRON SRT2-VOD08S REMOTE TERMINALS
7 METCAL 17829 DS1 DESOLDER TOOL
FOX BORO 8003A MAGNETIC FLOW TUBE
Cutler-Hammer PRL3a POW-R-LINE Panel Board
WESTINGHOUSE NLPL780 CRT PROGRAM LOADER
AGILENT 990967-902 ECLIPSE XDB-C18 HPLC COLUMN
SQUARE D 8502 SEO2V03 CONTACTOR 25HP
MITSUBISHI 7000 SERIES UPS 2KVA/1.4KW
PCB CUTTING MACHINE SAW
PCB CUTTING MACHINE SLICER
7 BRADY 200M 300X-PLUS LABEL PRINTER
FUJI PGM1AY01-3Y1SY DIGITAL PLOTTER
YOKOGAWA UR100 CHART RECORDER
Carl Zeiss Jena 250997 Diagnostic Microscope
Yaskawa SGDA-08AP Servo Pack
FANUC AD-H 201 Board AD-H201
FANUC A16B-1700-0130/028 Controller
HONEYWELL 4253401 RESOLVER
SIEMENS S7-200 MICRO PLC
SQUARE D 7TQ4023R2 TRANSFORMER 7.5KVA
ADEPT 90400-02700 EXTB01AD TEACH PENDANT
KEPCO ATE36-8M DC POWER SUPPLY
Teledyne HBM-1A Hasting Flowmeter
NTN NAC K16 A93-2469 Bowl Feeder 10″ with Speed Control
NTN S10/K16 Line & Bowl Feeders 9”
SPOOL WINDING MACHINE
137 GRINNELL FIG 772 RIGID FIRE COUPLING 1.25”
STEEL MELTING POT MINING SMELTER
29 Boxes Uline S-6318 Poly Bags 24 x 24″ 1 Mil
HP 423A Coaxial Crystal Detector
TEKTRONIX TDS340A 2 CH DIGITAL REAL-TIME OSCILLOSCOPE