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集散控制系统(Distributed Control System-DCS)集计算机技术、控制技术、通信技术、CRT技术于一体,广泛应用于生产过程控制系统。随着计算机和网络技术的飞速发展,产生了一种新型的控制系统———现场总线控制系统(Fieldbus Control System-FCS)。但国内生产企业的情况是:大多数企业还处于模拟仪表和人工控制的阶段,采用DCS控制系统的企业仍是少数。由于DCS应用广泛、技术成熟,在现有的技术条件和市场条件下,FCS还不能完全取代DCS,而且目前现场总线设备和系统还十分昂贵。因此,除了新建企业外,国内企业在较长时间不可能全面采用现场总线技术,而必须走逐步发展、过渡的道路。 ??我们在上海石化股份公司环保部水质净化厂监控系统的改造项目中,对3个生产单元已有的DCS和PLC进行改造,增加通信功能,实现总调度室对各生产装置的集中监控。 2?系统改造方案?? 根据水质净化厂各生产单元的功能和建设阶段,分为厂外调节池、污水一段、氧化沟、四期污水处理、污泥脱水、污泥干化6个生产单元。另外,在厂部设有总调度室,但是总调度室的监控水平较为落后,改造之前基本上不能对各个生产单元进行监控。为了适应生产需要,提高生产效率,改善操作条件,加强监控手段,确保各生产装置的正常运行,急需对各生产单元和总调度室进行技术和设备的更新改造,从而能在总调度室对各装置进行监视管理,及时了解各装置的运行情况,达到指挥及时和调度准确的目的。 2.1?现场监控系统的改造 ??现场监控系统的改造要充分利用原有仪表和设备,主要考虑可靠性和实时性。首先对自控程度较高的3个单元进行改造(系统结构见图2—1): ??四期污水处理生产单元控制设备配置了两套ALLEN-BRADELY公司PLC设备。25块开关量输入信号卡,可采集384点信号;7块开关量输出信号卡,可输出112点信号;3块模拟量输入信号卡,可采集24点信号。两套AB—PLC通过DH+(数据高速通道)实现数据共享。在原有的现场控制计算机上分别增加以太网卡,通过以太网将实时数据送到总调度室处理。??输出192点信号;1块模拟量输入信号卡,可采集8点信号。系统运行采用遥控开关操作与全模拟流程盘显示。在原有的Siemens S5-115UPLC上增加RS-232通讯模块(CP524)和1台现场操作站,用点对点方法连接,使PLC的数据通过现场操作站送到以太网上,与总调度室监控计算机通信。但RS-232传输速率只有9600bps,操作站仅对现场起到监视作用。
Bussmann 170M5460 500A 690V aR 170M5458/5459/5461Bussmann 170M1422 315A 690V aR 170M1419/1420/1421
Bussmann 170M6466 1250A 690V 170M6461/6462/6463/6464
Bussmann 50LET
Bussmann 170M2038 250A 1200VDC 170M2027~2033~2038
Bussmann / 170M5881/5882/5883/5884/5885/5886/5887/5888/5889
Bussmann BAO40 40A/50A 550V AC BS88 gG
170M4176/4177/4178/4179/4180/4181/4182/4183/4184/4185/4186
Bussmann OSD100
Bussmann 120EFMA63 / 24THMEJ63
Bussmann 170M3810D
Bussmann FWH-1200A
Bussmann 170M6204 550A
Bussmann 170M4461
Bussmann 170H1007/3003/4/5/6
Bussmann JJS-60 JJS35/40/45/50
Bussmann 170M1565D
Bussmann/ 170E9187 630A1400V aR 170E3914~2922 170E8882~8888
Bussmann 170M5989
Bussmann LPJ-300SP/400SP
Bussmann 170M3116
BUSSMANN 170M3690
Bussmann NT00 RT16-00
Bussmann 170M6814D
BUSSMANN 355MT
BUSSMANN 170M4062
Bussmann 180LETa
Bussmann 170M3462
Bussmann FWH-300A
Bussmann 170M3423
Bussmann/ 170M6083
Bussmann JJN-150
Bussmann 170M8647
Bussmann 170M6467
bussmann FWJ-50A
BUSSMANN 280MMT 280AMP 690V/700V aR
Bussmann KAC-100 100A 600V
Bussmann 170M7636
Bussmann 170M8547
Bussmann 170M6168
Bussmann 170M3461
Bussmann 170M3414
Bussmann 170M2698
Bussmann 170M3470
Bussmann 170M6012
Bussmann 170M5973
Bussmann 170M5248
FD1600/1200R17HP4_B2 FD1600/1200R17KF6C_B2
SKIIP642GB120-208CTV-F
FS225R12KE3/AGDR-71C
10000UF
EPCOS 400V4800UF B43564-S9488-M2
Bussmann 170M7066/7086/7106/7126
Bussmann 170L3161-F
BUSSMANN 170M7118/7119/7120/7121/7122/7123/7124/7125
Bussmann 170M3465
BUSSMANN 170M7083
Bussmann 170M3488/3489/ 3490/3491/3492/3493/3494/3495
Bussmann 170M5813
BUSSMANN 170M6663
Bussmann 170M3921/3922/3923/3924/3925/3926/3927/3928
BUSSMANN 170M4958/4959/4960/4928/4929/4930
170M2671
Bussmann 170M5922/5923/5924/5925/5926/5927/5928/5929
Bussmann 170M6408/6409/6410/6411/6412/6413/6415
Bussmann 170M4951/4952/4953/4954/4955/4956/4957
Bussmann 170M5508/5509/5510/5511/5512/5513/5514/5515
Bussmann 170M3959/3960/3961/3929/3930/3931
Bussmann 170M6420/6421/6470/6471/6520/6521/6570/6571
Bussmann 170M8611/8612/8613/8510/8511/8512/8513
Bussmann 170M8602/8603/8604/8605/8502/8503/8504/8505
BUSSMANN 170M3458/3459/3460/3463/3464
BUSSMANN 170M4438/4439/4440/4441/4442/4443/4444/4445
BUSSMANN 170M6538/6539/6540/6541/6542/6543/6544/6545
BUSSMANN 170M4558/4559/4560/4561/4562/4563/4564/4565
Bussmann 170M5588/5589/5590/5591/5592/5593/5594/5595
Bussmann 170M4266/4267/4268/4269
Bussmann 170M6108/6109/6110/6111/6112/6113/6114/6115
BUSSMANN 170M6258/6259/6260/6261/6262/6263/6264/6265
Bussmann 170M4822/4823/4824/4825/4826/4827/4828/4829
Bussmann 170M4965/4966/4967/4968/4969/4970/4971/4972
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Bussmann 170M5960/5930/5931/8600/8601/8500/8501
Bussmann 170M4973/4974/4988/4989/5966/5967/5981/5982
Bussmann 170M3266/3267/3268/3269/3270
BUSSMANN 170M7066/7086/7106/7126
Bussmann 170M5416/5417/5418/5466/5516/5517
Bussmann 170M3108/3109/3110/3111/3112/3113/3114/3115
170M2673/2674/2675/2676/2678/2679/2680/2681 170M1516
Bussmann 170M5316/6308/6309/6310/6311/6312/6313/6314
Bussmann 170M6208/6209/6210/6211/6212/6213/6214/6215
Bussmann 170M4316/4317/4318/4358/4359/4360/4361/4362
Bussmann 170M3566/3567/3568/3569/3570/3571/3572/3573
Bussmann 170M8638/8639/8640/8641/8642
BUSSMANN 170M2616/2617/2618/2619/2620
Bussmann 170M1408/1409/1410/1411/1412/1414/1415
Bussmann 170M4188/4189/4190/4191/4192/4193/4194
FZ1000R33HE3 FZ1800R17HP4-B29
Bussmann 170M5810 500A 690V aR / 170M5876
Bussmann BAO63 63A 550V BS88 gG BAO40 BAO50 BAO63M80
170M3902 125A 690V 170M3903/3904/3905/3906/3907/3908/3909
Bussmann 170M1780/1781/1802/1805/1807
Buss/BS88-4 100FE
Bussmann FWP-40A14Fa
BUSSMANN FWP-2A14Fa
Bussmann JJN-30 30A 300VAC/160VDC JJN-1~30A
BUSSMANN FWP-80Ba
Bussmann 170M5464
Bussmann FWP-150A
Bussmann 170M2073
Bussmann FRN-R-1.6
Bussmann 170M1371
Bussmann /170H0235/0236/0237/0238
Bussmann 170M8611
Bussmann FWH-60B
Bussmann JJN-60 60A 300Vac JJN60LS
Bussmann / GE 323A2433P6
Bussmann 170M3271 500A 690V aR 170M3272/3273
Bussmann 170L9578/9583 170L8880
Bussmann 170M3813D
Bussmann 170M6086
BUSSMANN 170M4445
Bussmann FWH-500A
Bussmann JKS-200
Bussmann 170M3421
Bussmann 170M6084
Bussmann FWH-300A
Bussmann 170M8545
Bussmann 170M6727
Bussmann 170M1413
BUSSMANN 170M6125
Bussmann 170M4700
BUSSMANN 170M6145
Bussmann 170L7299
Bussmann 170M5959
170M2692 16A 690V 170M2691/2693/2694/2695/2696/2697/2698
Bussmann 170M3809
Bussmann 170M8610
Bussmann 170M4016
Bussmann 170M3445
BUSSMANN 170M6464
Bussmann 170M4417
Bussmann 170M5739
Bussmann 170M6248
BUSSMANN 170M6149
BUSSMANN 170M4462
Bussmann 170M6016
Bussmann 170M3392
Bussmann 170M2667
Bussmann 170M6018
Bussmann 170M5465
Bussmann 170M6588/6589/6590/6591/6592/6593/6594/6595
Bussmann 170M3951/3952/3953/3954/3955/3956/3957/3958
Bussmann 170M4488/4489/4490/4491/4492/4493/4494/4495
Bussmann 170M6416 1250A 690V aR /170M6516/6517
Bussmann 170M5408/5409/5410/5411/5412/5413/5414/5415
BUSSMANN 170M3438/3439/3440/3441/3442/3443/3444
Bussmann 170M4243/4244/4245/4246/4247/5238/5239/524
Bussmann 170M4516/4517/4518/4519/4566/4567/4568/4569
Bussmann 170M8629/8630/8631/8632/8633/8634/8635/8636
BUSSMANN 170M6538/6539/6540/6541/6542/6543/6544/6545
Bussmann 170M3466/3467/3471/3472
Bussmann 170M5968/5969/5970/5971/5972/5974/5975
Bussmann 170M5249/5250/6246/6247/6249/6250/6251
Bussmann 170M3188/3189/3190/3191/3192/3193/3194
BUSSMANN 170M5058/5059/5060/5061/5062/5063/5064/5065
Bussmann 170M5108/5109/5110/5111/5112/5113/5114/5115
Bussmann 170M1566/1567/1568/1569/1570/1571/1572
Bussmann 170M4980/4981/4982/4983/4984/8985/4986/4987
Bussmann 170M3008/3009/3010/3011/3012/3013/3014/3015
BUSSMANN 170M4258/4259/4260/4261/4262/4263/4264/4265
BUSSMANN 170M6138/6139/6140/6141/6142/6143/6144/6145
Bussmann 170M3066/3067/3068/3069/3070/3071/3072/3073
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