描述

BENTLYNEVADA 330016-11-01-03-00-00-01

我國北方地區(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)場參數(shù)的采集、調(diào)度室與各換熱站的數(shù)據(jù)實時通訊就顯得至關(guān)重要。在這里，本文提出一種先進(jìn)的無線監(jiān)控方案：各換熱站中安裝北京和利時系統(tǒng)工程股份有限公司的HOLLiAS-PLCG5完成對現(xiàn)場參數(shù)采集、設(shè)備控制，現(xiàn)場HOLLiAS-PLCG5通過GPRS網(wǎng)絡(luò)與調(diào)度中心控制計算機(jī)建立可靠、穩(wěn)定的通訊，在調(diào)度中心可對現(xiàn)場所有換熱站完成監(jiān)視、控制。

我國北方地區(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（以下簡稱一次網(wǎng)）中的熱水與進(jìn)居室暖氣片（以下簡稱二次網(wǎng)）的熱水通過換熱器交換熱量。經(jīng)過換熱后，二次網(wǎng)中熱水流入各居室中。

在以上過程中，供熱調(diào)度部門需要對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)集中實時監(jiān)視，控制換熱站中各設(shè)備的運(yùn)行。同時，根據(jù)從現(xiàn)場監(jiān)測到的各換熱站運(yùn)行參數(shù)，調(diào)節(jié)熱電廠運(yùn)行工況，保證冬季整個供暖的穩(wěn)定運(yùn)行。

因此，各換熱站現(xiàn)場參數(shù)的采集、調(diào)度室與各換熱站的數(shù)據(jù)實時通訊就顯得至關(guān)重要。在這里，筆者提出一種先進(jìn)的無線監(jiān)控方案：各換熱站中安裝北京和利時系統(tǒng)工程股份有限公司的HOLLiAS-PLCG5完成對現(xiàn)場參數(shù)采集、設(shè)備控制，現(xiàn)場HOLLiAS-PLCG5通過GPRS網(wǎng)絡(luò)與調(diào)度中心控制計算機(jī)建立可靠、穩(wěn)定的通訊，在調(diào)度中心可對現(xiàn)場所有換熱站完成監(jiān)視、控制。沈陽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HOLLiAS-PLCG5CP240RS-232模塊完成與GPRSDTU的數(shù)據(jù)交互。PLC定時將數(shù)據(jù)發(fā)送給GPRSDTU，同時PLC實時接收DTU發(fā)來的數(shù)據(jù)完成相應(yīng)控制功能。GPRSDTU在收到PLC發(fā)來的數(shù)據(jù)會立即轉(zhuǎn)發(fā)到數(shù)據(jù)中心。根據(jù)換熱站的實際情況，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。

產(chǎn)品承諾：
保?證?全新原裝進(jìn)口,
保?證?安全準(zhǔn)時發(fā)貨，
保?證售后服務(wù)質(zhì)量，
優(yōu)勢價格，大量現(xiàn)貨。

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BENTLYNEVADA 330016-11-01-03-00-00-01

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