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集散控制系統(tǒng)(Distributed Control System-DCS)集計(jì)算機(jī)技術(shù)、控制技術(shù)、通信技術(shù)、CRT技術(shù)于一體,廣泛應(yīng)用于生產(chǎn)過程控制系統(tǒng)。隨著計(jì)算機(jī)和網(wǎng)絡(luò)技術(shù)的飛速發(fā)展,產(chǎn)生了一種新型的控制系統(tǒng)———現(xiàn)場總線控制系統(tǒng)(Fieldbus Control System-FCS)。但國內(nèi)生產(chǎn)企業(yè)的情況是:大多數(shù)企業(yè)還處于模擬儀表和人工控制的階段,采用DCS控制系統(tǒng)的企業(yè)仍是少數(shù)。由于DCS應(yīng)用廣泛、技術(shù)成熟,在現(xiàn)有的技術(shù)條件和市場條件下,F(xiàn)CS還不能完全取代DCS,而且目前現(xiàn)場總線設(shè)備和系統(tǒng)還十分昂貴。因此,除了新建企業(yè)外,國內(nèi)企業(yè)在較長時(shí)間不可能全面采用現(xiàn)場總線技術(shù),而必須走逐步發(fā)展、過渡的道路。 ??我們在上海石化股份公司環(huán)保部水質(zhì)凈化廠監(jiān)控系統(tǒng)的改造項(xiàng)目中,對3個(gè)生產(chǎn)單元已有的DCS和PLC進(jìn)行改造,增加通信功能,實(shí)現(xiàn)總調(diào)度室對各生產(chǎn)裝置的集中監(jiān)控。 2?系統(tǒng)改造方案?? 根據(jù)水質(zhì)凈化廠各生產(chǎn)單元的功能和建設(shè)階段,分為廠外調(diào)節(jié)池、污水一段、氧化溝、四期污水處理、污泥脫水、污泥干化6個(gè)生產(chǎn)單元。另外,在廠部設(shè)有總調(diào)度室,但是總調(diào)度室的監(jiān)控水平較為落后,改造之前基本上不能對各個(gè)生產(chǎn)單元進(jìn)行監(jiān)控。為了適應(yīng)生產(chǎn)需要,提高生產(chǎn)效率,改善操作條件,加強(qiáng)監(jiān)控手段,確保各生產(chǎn)裝置的正常運(yùn)行,急需對各生產(chǎn)單元和總調(diào)度室進(jìn)行技術(shù)和設(shè)備的更新改造,從而能在總調(diào)度室對各裝置進(jìn)行監(jiān)視管理,及時(shí)了解各裝置的運(yùn)行情況,達(dá)到指揮及時(shí)和調(diào)度準(zhǔn)確的目的。 2.1?現(xiàn)場監(jiān)控系統(tǒng)的改造 ??現(xiàn)場監(jiān)控系統(tǒng)的改造要充分利用原有儀表和設(shè)備,主要考慮可靠性和實(shí)時(shí)性。首先對自控程度較高的3個(gè)單元進(jìn)行改造(系統(tǒng)結(jié)構(gòu)見圖2—1): ??四期污水處理生產(chǎn)單元控制設(shè)備配置了兩套ALLEN-BRADELY公司PLC設(shè)備。25塊開關(guān)量輸入信號卡,可采集384點(diǎn)信號;7塊開關(guān)量輸出信號卡,可輸出112點(diǎn)信號;3塊模擬量輸入信號卡,可采集24點(diǎn)信號。兩套AB—PLC通過DH+(數(shù)據(jù)高速通道)實(shí)現(xiàn)數(shù)據(jù)共享。在原有的現(xiàn)場控制計(jì)算機(jī)上分別增加以太網(wǎng)卡,通過以太網(wǎng)將實(shí)時(shí)數(shù)據(jù)送到總調(diào)度室處理。??輸出192點(diǎn)信號;1塊模擬量輸入信號卡,可采集8點(diǎn)信號。系統(tǒng)運(yùn)行采用遙控開關(guān)操作與全模擬流程盤顯示。在原有的Siemens S5-115UPLC上增加RS-232通訊模塊(CP524)和1臺現(xiàn)場操作站,用點(diǎn)對點(diǎn)方法連接,使PLC的數(shù)據(jù)通過現(xiàn)場操作站送到以太網(wǎng)上,與總調(diào)度室監(jiān)控計(jì)算機(jī)通信。但RS-232傳輸速率只有9600bps,操作站僅對現(xiàn)場起到監(jiān)視作用。
BUSSMANN 170M6688/6698/6699/6700/6701/6689/6690/6691BUSSMANN 170M3658/3659/3660/3661/3662/3663/3664/3665
BUSSMANN 170M6766/6767/6768/6769/6770/6771
BUSSMANN 170M3716/3717/3718/3719/3720/3721/3722/3723
BUSSMANN 170M6696/6749/6697/6750/6751
BUSSMANN 170M4708/4709/4710/4711/4712/4713/4714/4715
BUSSMANN FWP-3A14Fa
Bussmann 170L3158 00T/80 80A660V 170L4213/5266/5714
Bussmann JJN-30/50/60/70/100/125/150/350
bussmann FWA-300B 300Amp 150Vac aR 70/80/100/125/150B
KTN-R-50/60/70/75/80/90/100/110/125/150/175/200
Bussmann 20SF21
BUSSMANN FWP-125A/200A/250A/400A/600A/700A/1200A
BUSSMANN Telpower DC Power TPL-BH-200A
BUSS KRP-C-1000SP/1100/1200/1350/1400/1500/1600/2000
Bussmann JJS-110A/125A/150A/175A/200/250/400/500A (600V)
Bussmann BS88-4 80LET 400/630/900LMMT
NON-3/7/10 NON-12/15/20/25/30 NON-40/50/200/500
Buss TPN-3/25/225/600
170M1466 170M1467 170M1468 170M1469 170M1470 170M1471
BUSSMANN 170M6116/6117/6118/6266/6267/6268
Bussmann 170M3166/3167/3168/3169/3170/3171/3172/3173
Bussmann 170M6315/6316/6317/6318/6365/6366/6367/6368
BUSSMANN 170M6058/6059/6060/6061/6062/6063/6064/6065
Bussmann 170M5016/5017/5066/5067/5166/5216
Bussmann 170M5308/5309/5310/5311/5312/5313/5314/5315
Bussmann 170M4810/4811/4812/4813/4814/4815
Bussmann 170M4363/4364/4365/4366/4367/4368
Bussmann 170M1558/1559/1560/1561/1562/1563/1564/1567
BUSSMANN 170M3058/3059/3060/3061/3062/3063/3064/3065
BUSSMANN 170M4158/4159/4160/4161/4162/4163/4164/4165
Bussmann 170M1316/1317/1318/1319/1320/1321/1322/1324
Bussmann 170M2666/2667/2668/2669/2670/2671
BUSSMANN 170M3696 315A 1250V aR 170M3693/3694/3695
BUSSMANN 170M5616/5617/5618/5666/5667/5668
Bussmann 170M5812 630A 690V aR 170M2667
BUSSMANN 170M5758/5759/5760/5761/5762/5763/5764/5765
BUSSMANN 170M6744/6745/6746/6693/6694/6747/6748/6695
BUSSMANN 170M3666/3667/3668/3669/3670/3671/3672/3673
BUSSMANN 170M3708/3709/3710/3711/3712/3713/3714/3715
BUSSMANN 170M3739/3740/3741/3742/3743/3744/3745/3746
BUSSMANN 170M6608/6609/6610/6611/6612/6613/6614/6615
BUSSMANN 170M6708/6709/6710/6711
BUSSMANN 170M4758/4759/4760/4761/4762/4763/4764/4765
Bussmann FWP-32A14FI / FWP-40A14FI
BUSSMANN 170M8531/8532/8533/8534/8535/8536/8537/8538
170M6276 690V 1000A 170M6210
Bussmann FWH-40B
Bussmann 170M6814
Bussmann FWJ-70A / 100A 1000V
Bussmann 170M1420 200A 170M6808
bussmann 170M1372 315A
Bussmann 450SBMT 315SBMT
KRP-C-1900SP/2000/2001/2400/2500/3800/4500/6000SP
Bussman LPJ-200SP LPJ-500SP LPJ-225SP LPJ-250SP
BUSS KTN-R-225/250/300/350/400/450/500/600
BUSS FWP-20/25/40/50/63/80/100A22Fa
BUSSMANN FRS-R-600 FRS-R-300/400/500
Bussmann NH2-400A 500V 80NHG2B-690 250NHM2BI-690
Bussmann 170M5986
6MBI550V-120-50
6SY7000-0AD35
Bussmann 170M3965/3966/3967/3968/3969/3970/3971/3972
Bussmann 170M6020/6070/6170/6220/6021/6071/6171/6221
Bussmann 170M5008/5009/5010/5011/5012/5014
Bussmann FWH-400A FWH-500a FWH-600A FWH-700A FWH-800A
Bussmann 170M3208/3209/3210/3211/3212/3213/3214
BUSSMANN 170M5258/5259/5260/5261/5262/5263/5264/5265
Bussmann 170M3016/3017/3018/3019/3020/3021/3022/3023
Bussmann 170M3216/3217/3218/3219/3220/3221/3222/3223
BUSSMANN 170M3158/3159/3160/3161/3162/3163/3164/3165
Bussmann 170M1366/1367/1368/1370/1371/1372
Bussmann 170M1358/1359/1360/1361/1362/1363/1364/1365
Bussmann 170M3366/3367/3368/3369/3370/3371
BUSSMANN 170M3747/4695/4696/4697/4738/4739/4740/4741
BUSSMANN 170M5690/5691/5692/5693/5694/5695/5696/5697
BUSSMANN 170M3539/3540/3541/4531/4532/4533/4534/4535
BUSSMANN 170M5698/5699/5700/5738/5740/5741/5742/5743
BUSSMANN 170M3531/3532/3533/3534/3535/3536/3537/3538
BUSSMANN 170M4716/4717/4718/4719/4766/4767/4768/4769
Bussmann 170M6414
BUSSMANN 170M4536/4537/4538/4539/4540/5531/5532/5533
BUSSMANN 170M8539/8540/8541/8542/8543/8544
BUSSMANN 170M5608/5609/5610/5611/5612/5613/5614/5615
BUSSMANN 170M6658/6659/6660/6661/6662/6664/6665
BUSSMANN 170M3608/3609/3610/3611/3612/3613/3614/3615
BUSSMANN 170M3766/3767/3768/3769/3770/3771/3772/3773
Bussmann LPJ-45SP 600V LPJ-35/40SP
Bussmann 170M6013
Bussmann 170M6276
FWH-1400A FWH-1600A
Bussmann 250FM
A50QS600-4Y A50QS700-4Y A50QS800-4Y A50QS900-4Y A50QS1000-4
Bussmann/ NH00 125A 500V120KA gG/gL 125NHG00B 315NHM2B-690
BUSSMANN 315NHG2B 80/160NHG00B 250NHG1B 500NHG3B
BUSSMANN FWP-50Ba FWP-20B/30B/35B/40B/60B/70B/80B/100B
bussmann 25/80NHG00B-690 (gG/gL) 10/50NHG000B-400
BUSSMANN FWX-100A FWX-40A/45A/70A/80A/175A FWX-1500AH
A70Q35-4 A70Q40-4 A70Q50-4 A70Q60-4 A70Q70-4 A70Q80-4
Bussmann BS88 240V 6A-900A
170M3621/4823/4981/4391/4491/4611/5142/1320
A70QS200-4 A70QS250-4 A70QS300-4 A70QS350-4 A70QS400-4
Bussmann ANN-40/50A 125VAC 10A-800A
A70P35-4TA A70P40-4TA A70P50-4TA A70P60-4TA
Bussmann 170M6205 630A 1250V /170M4983/4393/6819
BUSSMANN 315SBMT/450SBMT
A70P125-4TA A70P150-4TA A70P175-4TA A70P200-4 TA
A70P450-4 A70P500-4 A70P600-4 A70P700-4 A70P800-4 A70P900-4
A70P450-4TA A70P500-4TA A70P600-4TA A70P1000-4 A70P1200-4
FF300R12KT3 FF300R12KT4 FF300R12KE3 FF300R12KS4
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