ABB 3HAC026271-001

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ABB 3HAC026271-001

我國(guó)北方地區(qū)冬季目前普遍采用集中供暖方式進(jìn)行供熱。因此，各換熱站現(xiàn)場(chǎng)參數(shù)的采集、調(diào)度室與各換熱站的數(shù)據(jù)實(shí)時(shí)通訊就顯得至關(guān)重要。在這里，本文提出一種先進(jìn)的無(wú)線監(jiān)控方案：各換熱站中安裝北京和利時(shí)系統(tǒng)工程股份有限公司的HOLLiAS-PLCG5完成對(duì)現(xiàn)場(chǎng)參數(shù)采集、設(shè)備控制，現(xiàn)場(chǎng)HOLLiAS-PLCG5通過(guò)GPRS網(wǎng)絡(luò)與調(diào)度中心控制計(jì)算機(jī)建立可靠、穩(wěn)定的通訊，在調(diào)度中心可對(duì)現(xiàn)場(chǎng)所有換熱站完成監(jiān)視、控制。

我國(guó)北方地區(qū)冬季目前普遍采用集中供暖方式進(jìn)行供熱。熱電廠通過(guò)城市高溫供熱管道將熱水送至各居民小區(qū)、企業(yè)中的換熱站。在換熱站，高溫管道（以下簡(jiǎn)稱一次網(wǎng)）中的熱水與進(jìn)居室暖氣片（以下簡(jiǎn)稱二次網(wǎng)）的熱水通過(guò)換熱器交換熱量。經(jīng)過(guò)換熱后，二次網(wǎng)中熱水流入各居室中。在以上過(guò)程中，供熱調(diào)度部門需要對(duì)分散在不同地理位置換熱站中溫度、壓力、流量、液位等參數(shù)集中實(shí)時(shí)監(jiān)視，控制換熱站中各設(shè)備的運(yùn)行。同時(shí)，根據(jù)從現(xiàn)場(chǎng)監(jiān)測(cè)到的各換熱站運(yùn)行參數(shù)，調(diào)節(jié)熱電廠運(yùn)行工況，保證冬季整個(gè)供暖的穩(wěn)定運(yùn)行。因此，各換熱站現(xiàn)場(chǎng)參數(shù)的采集、調(diào)度室與各換熱站的數(shù)據(jù)實(shí)時(shí)通訊就顯得至關(guān)重要。在這里，筆者提出一種先進(jìn)的無(wú)線監(jiān)控方案：各換熱站中安裝北京和利時(shí)系統(tǒng)工程股份有限公司的HOLLiAS-PLCG5完成對(duì)現(xiàn)場(chǎng)參數(shù)采集、設(shè)備控制，現(xiàn)場(chǎng)HOLLiAS-PLCG5通過(guò)GPRS網(wǎng)絡(luò)與調(diào)度中心控制計(jì)算機(jī)建立可靠、穩(wěn)定的通訊，在調(diào)度中心可對(duì)現(xiàn)場(chǎng)所有換熱站完成監(jiān)視、控制。沈陽(yáng)皇姑熱電有限公司供暖監(jiān)控系統(tǒng)如圖1所示由三部分組成：現(xiàn)場(chǎng)換熱站HOLLiAS-PLCG5控制部分、GPRS數(shù)據(jù)傳輸部分、調(diào)度室數(shù)據(jù)中心。通過(guò)HOLLiAS-PLCG5CP240RS-232模塊完成與GPRSDTU的數(shù)據(jù)交互。PLC定時(shí)將數(shù)據(jù)發(fā)送給GPRSDTU，同時(shí)PLC實(shí)時(shí)接收DTU發(fā)來(lái)的數(shù)據(jù)完成相應(yīng)控制功能。GPRSDTU在收到PLC發(fā)來(lái)的數(shù)據(jù)會(huì)立即轉(zhuǎn)發(fā)到數(shù)據(jù)中心。根據(jù)換熱站的實(shí)際情況，此次換熱站PLC每次向DTU發(fā)送幀格式數(shù)據(jù)量為140字節(jié)，包括所有模擬量和開關(guān)量。

數(shù)據(jù)經(jīng)DTU發(fā)送到移動(dòng)GPRS網(wǎng)絡(luò)上的CGSN后，移動(dòng)的GPRS網(wǎng)絡(luò)與Internet有通道接口，因此，移動(dòng)CGSN服務(wù)器可將數(shù)據(jù)經(jīng)Internet再轉(zhuǎn)發(fā)到數(shù)據(jù)中心服務(wù)器或者是路由器上。為了保證數(shù)據(jù)在移動(dòng)網(wǎng)絡(luò)到數(shù)據(jù)中心路由器之間傳輸?shù)陌踩裕P者使用了VPN功能。該功能在數(shù)據(jù)中心路由器和移動(dòng)出口網(wǎng)關(guān)服務(wù)器之間建立VPN的GRE隧道，保證這兩點(diǎn)之間數(shù)據(jù)傳輸?shù)陌踩?，不被他人在中途進(jìn)行信息竊取、修改。
移動(dòng)GPRS網(wǎng)絡(luò)傳輸送來(lái)的各換熱站數(shù)據(jù)經(jīng)Internet，通過(guò)ADSLModem信號(hào)解調(diào)經(jīng)防火墻檢測(cè)后送達(dá)路由器VPN解密后，再將解密后的數(shù)據(jù)包轉(zhuǎn)發(fā)到指定的數(shù)據(jù)中心服務(wù)器上進(jìn)行數(shù)據(jù)接收處理，與此同時(shí)數(shù)據(jù)中心服務(wù)器擔(dān)負(fù)著向各換熱站發(fā)送相應(yīng)控制指令數(shù)據(jù)的任務(wù)。各客戶機(jī)從數(shù)據(jù)中心服務(wù)器上取得數(shù)據(jù)在各自的人機(jī)界面軟件上完成對(duì)各換熱站的監(jiān)視控制、報(bào)警、歷史曲線等功能。
此外，在調(diào)度中心網(wǎng)絡(luò)中，網(wǎng)關(guān)機(jī)與全廠MIS網(wǎng)絡(luò)連接，負(fù)責(zé)把熱網(wǎng)的各種運(yùn)行參數(shù)送到MIS網(wǎng)上，供上一級(jí)相應(yīng)MIS軟件完成數(shù)據(jù)分析、數(shù)據(jù)挖掘等功能，大大提高熱網(wǎng)運(yùn)行的經(jīng)濟(jì)性。在這里，網(wǎng)關(guān)機(jī)與MIS網(wǎng)數(shù)據(jù)服務(wù)器的數(shù)據(jù)接口選用OPC，該接口使用方便、調(diào)試配置十分簡(jiǎn)單。

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FOXBORO 202S-10-SSSFSNS?NSSN USPP 202S10SSSFSNSNS?S

FOXBORO P0972PP NSFP P0972PP

FOXBORO 230SE USPP 230SE

4 Tickets New England Patriots Cowboys 10/16/11 Gillet
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4 Tickets New England Patriots Cowboys 10/16/11 Gillet
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FOXBORO D0147KE USPP D0147KE

FOXBORO 13A-VS1 NSPP 13AVS1

FOXBORO 130K-N5-ECRB USPP 130KN5ECRB

FOXBORO P0913ED USPP P0913ED

6 Zone J Tickets (10/9) New England Patriots vs Jets

Foxboro Dual Nodebus Module P0971WV DNBT

3 Tickets New England Patriots Cowboys 10/16/11 Gillet
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4 Tickets New England Revolution United 7/13/11 Gillet

4 Tickets New England Revolution United 7/13/11 Gillet

FOXBORO 135S NSFP 135S

FOXBORO 135S-C-L NSFP 135SCL

4 TIXs 6/26 Taylor Swift PIT GA Gillette Stadium

FOXBORO 230SM-S-A USPP 230SMSA

FOXBORO 202S-04-XXXX USPP 202S04XXXX

Foxboro Pressure Transmitter IDP10-DS1B01C-S?K3FBR4M1L1T

FOXBORO 2026-04-SSSS USPP 202604SSSS

Foxboro Pressure Transmitter IDP10-DS1B01C

4 Tickets New England Patriots Bills 1/1/12 Gillette S

FOXBORO 202S-07-SSSFSSE?SNF USPP 202S07SSSFSSESN?F

4 Tickets New England Patriots Colts 12/4/11 Gillette
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4 Tickets New England Patriots Giants 11/6/11 Gillette
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4 Tickets New England Patriots Colts 12/4/11 Gillette
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4 Tickets New England Patriots Giants 11/6/11 Gillette
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FOXBORO 2AT-SBU NSFP 2ATSBU

FOXBORO 111-A-L USPP 111AL

4 Tickets New England Patriots Chiefs 11/21/11 Gillett

Foxboro E96S-IA Magnetic Flow Transmitter E96SIA NEW
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FOXBORO 2AX-SUM USPP 2AXSUM

4 TAYLOR SWIFT TICKETS 6/25 GILLETTE, MA – PIT GA
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FOXBORO 130PD-N NSPP 130PDN

Foxboro LCD Replacement for VS IV 13″ Monitor

Foxboro Replacement UCM Power Supply, 120VAC

Water Quality Test Equipment , Tox-Array 2001 ,Foxboro
CLM253, CPM253 ,131VC-3t, GJL36015M03 ,Mil Ram

4 Tickets New England Patriots 12/24/11 Gillette Stadiu
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4 TIXs 6/26 Taylor Swift PIT Gillette Stadium

4 TIXs 6/25 Taylor Swift 114 Gillette Stadium

4 TIXs 6/25 Taylor Swift A4 Gillette Stadium

FOXBORO 2AX+TIM NSFP 2AXTIM

PLC模塊，可編程控制器，CPU模塊，IO模塊，AI模塊，通訊模塊。AB/施耐德/ABB/GE/本特利/西屋/英維斯/霍尼韋爾/黑馬/FU克斯波羅

15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國(guó)內(nèi)實(shí)力庫(kù)存商家


選擇深圳長(zhǎng)欣，選擇放心，售后無(wú)憂大量現(xiàn)貨，當(dāng)天順豐發(fā)貨！
主營(yíng)：本特利，英維思，伍德沃德，?？怂共_、西屋、瑞恩、施耐德莫迪康、ABB、AB、西門子、摩托羅拉、GE發(fā)那科、安川、博世力士樂(lè)，ACSO，力士樂(lè)等各大品牌的DCS系統(tǒng)配件，機(jī)器人系統(tǒng)配件，大型伺服系統(tǒng)備件。

先介紹幾點(diǎn)經(jīng)驗(yàn)。
1、先通讀一遍“系統(tǒng)手冊(cè)”（不管能不能看懂，先了解個(gè)大概，以便學(xué)習(xí)編程時(shí)查找）；
2、由位控邏輯入手，逐漸增加定時(shí)、計(jì)數(shù)等條件，把或、與、非關(guān)系理順；
3、進(jìn)而練習(xí)整數(shù)運(yùn)算、實(shí)數(shù)運(yùn)算、類型轉(zhuǎn)換；
4、量程轉(zhuǎn)換、PID調(diào)節(jié)回路的建立及P、I、D參數(shù)的理解（最好是有個(gè)物理回路驗(yàn)證，比如變頻器+電機(jī)+測(cè)速傳感器）；
5、循環(huán)、順序、跳轉(zhuǎn)等程序控制（盡量避免跳轉(zhuǎn)，非跳不可時(shí)也是跳的越近越好）；
6、中斷、通訊、位置控制....

本人以ABB工業(yè)機(jī)器人配件DSQC系列和Motorola MVME系列，GE 卡件 模塊 驅(qū)動(dòng)器系列為主攻。各位電工朋友可根據(jù)自己的條件選擇適合自己的PLC品牌，由于PLC的基本框架大同小異，學(xué)會(huì)一種至于其它的學(xué)習(xí)起來(lái)也就簡(jiǎn)單了。

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