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1、大連理工大學(xué)碩士學(xué)位論文摘要隨著城市建設(shè)飛速發(fā)展,節(jié)能、降耗及環(huán)保意識的增強,集中供熱成為我國北方城市供熱的大勢所趨。它是節(jié)約燃料、改善環(huán)境及實現(xiàn)城市生活現(xiàn)代化的一項重要技術(shù)措施和政策。如何有效地控制和管理整個熱力系統(tǒng),提高熱力系統(tǒng)的經(jīng)濟效益和社會效益,成為各供熱企業(yè)急需解決的重要課題。由此導(dǎo)致集中供熱網(wǎng)的運行調(diào)節(jié)和控制策略等相關(guān)問題應(yīng)運而生。本文以實驗室熱網(wǎng)裝置的控制為基礎(chǔ),旨在對集中供熱網(wǎng)的運行調(diào)節(jié)和控制方法進(jìn)行研究,主要進(jìn)行了以下幾方面的工作:對國內(nèi)外集中供熱系統(tǒng)的運行調(diào)節(jié)和控制技術(shù)進(jìn)行了概述,并從按需供熱和均勻供熱的角
2、度進(jìn)行了進(jìn)一步闡述。然后針對我國集中供熱網(wǎng)的特點和存在的問題采用了適合國情的基于溫度的流量控制方法。系統(tǒng)地討論了集中供熱系統(tǒng)流量調(diào)節(jié)的神經(jīng)網(wǎng)絡(luò)解耦控制策略,并針對集中供熱網(wǎng)這種具有大滯后、大慣性、非線性、強耦合特性的系統(tǒng),設(shè)計了基于非線性多變量的神經(jīng)網(wǎng)絡(luò)解耦控制器,并隨后深入探討了該控制器的特性和具體的設(shè)計思想。詳細(xì)介紹了實驗室熱網(wǎng)系統(tǒng)硬件裝置的組成、實時熱網(wǎng)監(jiān)控系統(tǒng)軟件平臺的設(shè)計開發(fā)、神經(jīng)網(wǎng)絡(luò)解耦控制器的具體實現(xiàn)。結(jié)果表明,該控制器能夠合理的分配各熱力子站一次網(wǎng)側(cè)的流量,使各用戶二次網(wǎng)供回水平均溫度趨于一致,進(jìn)而實現(xiàn)全網(wǎng)內(nèi)熱
3、量的合理分配,提高供熱網(wǎng)的供熱質(zhì)量,達(dá)到了集中供熱的整體目標(biāo)即穩(wěn)定供熱和均勻供熱。關(guān)鍵詞:集中供熱網(wǎng);按需供熱;均勻供熱;神經(jīng)網(wǎng)絡(luò)解耦控制ResearchofheatingnetworkcontrolbasedontheDecouplingControllerofNeuralNetworksAbstractAlongwithcities’rapiddevelopment,people’8recognitionofenergysaving,co嬲umedroppingandenvironmentprotecting,thedis
4、trictheatingsupplyhasbecomethemainheatingmodeinnorthChina.Ithasbeenusedasallimportanttechniquemanagementandpolicyinsavingfuel,improvingenvironmentandrealizingcitylife’Smodernization.Sohowtocontrolandmanagethewholeheatingsystemeffectively,improvetheheatingsystem’Seco
5、nomyandsocietybenefithavebecomethemostimportantproblemthatneedstoresolveformostheatingsupplycorporations.Alloftheseleadtothebirthofcorrelationquestionslikerunningregulationandcontrolpolicy.OnthebasisofLaboratory-scaleheatingsystemcontrol,theproblemsofrunningregulati
6、onandcontrolpolicyhavebeendiscussed.TheapplicationofNeuralNetworkstechnologytODistrictHeatingSystemtoadjustthefluxisalsodiscussed.Itmainlyincludes:Therunningregulationandcontrolpolicyarediscussedinthefirstpartofthispaper;need-basedheatingmethodandevendistributionhea
7、tingmethodarealsodiscusseddeeply.ThenbyanalyzingthecharacteristicsandpossibleproblemsofDistrictHeatingSysteminChina,theflowcontrolstrategybasedontemperatureispresented,whichadaptstothesituationofourcountry.ThemethodofmultivariabledecouplingcontrolofNeuralNetworksisd
8、iscussedinthesecondpartofthispaper.InaccordancewiththeDistrictHeatingSystemhavinglargedelay,nonlinearandstrongcouplingcharacteristic,thisp