資源描述：
《含風(fēng)電接入的發(fā)輸電系統(tǒng)風(fēng)險(xiǎn)評(píng)估.pdf》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫(kù)。
1、2014年2月電工技術(shù)學(xué)報(bào)VO1．29NO．2第29卷第2期TRANSACTIONSOFCHINAELECTROTECHNICALSOCIETYFeb．2014含風(fēng)電接入的發(fā)輸電系統(tǒng)風(fēng)險(xiǎn)評(píng)估2蔣程劉文霞張建華俞悅2余加喜2劉德先(1．華北電力大學(xué)新能源電力系統(tǒng)國(guó)家重點(diǎn)實(shí)驗(yàn)室北京1022062．海南電網(wǎng)公司?？?70203)摘要考慮風(fēng)速的隨機(jī)性、風(fēng)電機(jī)組的功率特性、風(fēng)機(jī)運(yùn)行條件、風(fēng)機(jī)的降額運(yùn)行狀態(tài)、風(fēng)電場(chǎng)升壓變壓器和高壓輸電線路故障率等因素的影響，建立了風(fēng)電場(chǎng)可靠性模型。針對(duì)風(fēng)電接入情況下傳統(tǒng)評(píng)估方法樣本容量大、效率低等不足，提出了基于分散抽樣蒙特卡洛算法的含風(fēng)電場(chǎng)發(fā)輸電系統(tǒng)風(fēng)
2、險(xiǎn)評(píng)估方法，此抽樣算法將[0，1]區(qū)間分成若干子區(qū)間，在抽樣后分別對(duì)每個(gè)子區(qū)間進(jìn)行系統(tǒng)狀態(tài)判斷和指標(biāo)計(jì)算，從而增加故障狀態(tài)的抽樣頻率，提高抽樣效率，在滿足精度要求下，有效地減少了抽樣次數(shù)。針對(duì)風(fēng)電的隨機(jī)性和間歇性等特點(diǎn)，給出了關(guān)于風(fēng)電接入系統(tǒng)的風(fēng)險(xiǎn)指標(biāo)，該指標(biāo)能分別反映風(fēng)電接入對(duì)發(fā)電系統(tǒng)和輸電系統(tǒng)的影響。通過(guò)對(duì)改進(jìn)IEEE—RTS79算例的計(jì)算分析驗(yàn)證了所提評(píng)估方法和指標(biāo)的有效性。關(guān)鍵詞：蒙特卡洛仿真風(fēng)險(xiǎn)評(píng)估發(fā)輸電系統(tǒng)分散抽樣風(fēng)電中圖分類號(hào)：TM712RiskAssessmentofGenerationandTransmissionSystemsConsideringWind
3、PowerPenetrationJiangChengLiuWenxiaZhangJianhuaYuPYuJiaxiLiuDexian(1．StateKeyLaboratoryofAlternateElectricalPowerSystemwithRenewableEnergySourcesNorthChinaElectricPowerUniversityBeUing102206China2．HainanPowerGridCompanyHaikou570203China)AbstractThereliabilitymodelofthewindfarmiSestablishedc
4、onsideringtherandomnessofthewindspeed，thepowercharacteristicsofthewindturbine，windturbineoperationconditions，deratingoperatingstatus，step—uptransformerandhigh—voltagetransmissionlinefailurerateandotherfactors．Becausethetraditionalassessmentmethodhaslargesamplesizeandloweficiencyforlarge-sca
5、lewindpowerpenetration，thenewassessmentmethodforgenerationandtransmissionsystemswithlarge·-scalewindpowerbasedonscatteredsamplingmonte-carlotechniqueisproposedinthispaper．Thismethodhas[0，1]intervaldividedintoseveralsub-intervalinwhichthesystemindexcanbecalculatedindependentlywhichindirectly
6、increasethesamplingfrequencyofthefaultconditionSothescatteredsamplingMonte-Carlomethodcouldreducesampletimesandenhancesamplingeficiency．Accordingtotherandomandintermittentofwindpower，theriskindexeswhichfullyreflecttheimpactofpowergenerationandtransmissionsystemsaregiven．Thecalculationandana
7、lysisofimprovedIEEE-RTS79reliabilitytestsystemsshowthattheproposedalgorithmiseffective．Keywords：Monte—Carlosimulation，riskassessment，powergenerationandtransmissionsystem，scatteredsamplingtechnique，windpower國(guó)家高技術(shù)研究發(fā)展計(jì)劃(863計(jì)劃)資助項(xiàng)目(2012AA050201)。收稿日期2013-01
