配電網(wǎng)潮流計(jì)算 基于前推回代法的配電網(wǎng)潮流計(jì)算

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1、配電網(wǎng)潮流計(jì)算基于前推回代法的配電網(wǎng)潮流計(jì)算導(dǎo)讀：就愛閱讀網(wǎng)友為您分享以下“基于前推回代法的配電網(wǎng)潮流計(jì)算”的資訊，希望對(duì)您有所幫助，感謝您對(duì)92to.com的支持!哈爾濱理工大學(xué)畢業(yè)設(shè)計(jì)（論文）任務(wù)書基于前推回帶法的配電網(wǎng)潮流計(jì)算的研究摘要電力系統(tǒng)的潮流計(jì)算在電力系統(tǒng)穩(wěn)態(tài)分析和電力系統(tǒng)設(shè)計(jì)中有很重要的作用，潮流計(jì)算也是電力系統(tǒng)暫態(tài)分析的基礎(chǔ)。潮流計(jì)算是根據(jù)給定的系統(tǒng)運(yùn)行條件來(lái)計(jì)算系統(tǒng)各個(gè)部分的運(yùn)行狀況，主要包括電壓和功率的計(jì)算。配電網(wǎng)潮流計(jì)算是配電管理系統(tǒng)高級(jí)應(yīng)用軟件功能組成之一。本課題在分析配電網(wǎng)元件模型的基礎(chǔ)上，建立了配電網(wǎng)潮流計(jì)算的數(shù)

2、學(xué)模型。由于配電網(wǎng)的結(jié)構(gòu)和參數(shù)與輸電網(wǎng)有很大的區(qū)別，因此配電網(wǎng)的潮流計(jì)算必須采用相適應(yīng)的算法。配電網(wǎng)的結(jié)構(gòu)特點(diǎn)呈輻射狀，在正常運(yùn)行時(shí)是開環(huán)的；配電網(wǎng)的另一個(gè)特點(diǎn)是配電線路的總長(zhǎng)度較輸電線路要長(zhǎng)且分支比較多，配電線路的線徑比輸電網(wǎng)細(xì)導(dǎo)致配電網(wǎng)的R/X較大，且線路的充電電容可以忽略。配電網(wǎng)的潮流計(jì)算采用的方法是前推回代法，文中對(duì)前推回代法的基本原理、收斂性及計(jì)算速度等進(jìn)行了理論分析比較。經(jīng)過(guò)C語(yǔ)言編程，運(yùn)行算例表明，前推回代法具有編程簡(jiǎn)單、計(jì)算速度快、收斂性好的特點(diǎn)，此方法是配電網(wǎng)潮流計(jì)算的有效算法，具有很強(qiáng)的實(shí)用性。關(guān)鍵詞：電力系統(tǒng)；配電網(wǎng)；潮

3、流計(jì)算；前推回代法StudyondistributionnetworkpowerflowcalculationAbstractPowerflowcalculationhasaveryimportantroleinpowersystemsteady-stateanalysisandpowersystemdesign,anditisalsothebasisoftransientanalysisinpowersystem.Flowcalculationisbasedongivenconditionsofthepowersystemandcalcul

4、atestheoperationalstatusofeverypartofthesystem,includingvoltageandpower.Withthedevelopmentandapplicationofthepowerelectronicsinstallations,thepollutionoftheharmonicsbecomesmoreandmoreseriousinthenetwork.Thereactivesourceisusedwidelyinmanyfields.Manykindsofmethodsbasedonthea

5、ctivefiltertorestraintheharmonicsandtocompensatethereactivepoweraretakenintothisfield.Andthedetectionofharmonicsandreactivecurrentisverycrucialtoharmonicrestraintandreactivecompensation.ThisthesisstartswiththedefinitionoftheFryzetime-domaintheoryandtheinstantaneousreactivep

6、owertheory,andthemethodsforharmonicsdetectingandreactivecurrentbasedonthesetheoriesisalsodiscussedrespectivelyinthisthesis.Thereafter,takingthethree-phasethree-wiresymmetricalcircuitsasresearchobject,usingthesoftwarewhichnamedPSCAD/EMTDC,simulationmodelthroughwhichwecanmake

7、computersimulationisbuiltbasedonFryzetheoryandinstantaneousreactivepowertheory.Fromtheinterrelatedwavewegotfromsimulation,thefundamentalreactivecurrentwegotfromcalculationandgeneralizedinstantaneousreactivecurrentwegotfromdetection.Thosetheorieshavetheadvantageoftheirownind

8、etectingtheharmonicandreactivecurrent.AftertheCprogramminglanguage,runexample,ther