基于模型辨識(shí)的靈活接地有源配電系統(tǒng)故障選線算法

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引用格式：，等.基于模型辨識(shí)的靈活接地有源配電系統(tǒng)故障選線算法[J].現(xiàn)代電子技術(shù)，2025，48（10）：135-141.

中圖分類號(hào)：TN957.52-34 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1004-373X（2025）10-0135-07

Abstract：Inalusion tothefault lineselectionproblemofflexiblegrounding distributionsystemwithdistributed generation，alineselectionalgorithmusing transientzero-sequencenetworkmodelidentification isproposed.Thetransientzero sequencenetworkcomposedoftheinitialenergystoragedischargeofteacsuppresioncoilafterthesmallneutralesistanceis put intooperation is established.Thechangeruleofthemain frequencyofthetransient processandthetimedomainmodelof thetransientcurrentofthesoundlineandthefaultylineareanalyzed.Thetransientmainfrequencycurrentofanysoundlineis linearlyexpressedbythefirstderivativeofthetransientzero-sequencevoltageanditsowncapacitancetotheground，thatis，the soundlineequivalentisequivalenttoacapacitancemodel.Incomparisonwiththesoundline，thelinearexpresionoftransient zero-sequencevoltageandtransitionresistanceareaddedtothefaultline.Basedonthelinecapacitance model，thetransient currentofeachlineiscalculatedbymeansofthetransientzero-sequencevoltageandthecapacitanceparametersofeachline. Theoreticallthecalulatedtransietcurentisonsistetwiththeacualmeasureduent，hichndicatesthatteactualline isacapacitance modelandisjudgedtobeasoundline.Otherwise，itisjudgedasafault line.Thefaultlineselectioncriterion isconstructedbasedonthediferencebetweenthetransientcalculationcurrentandthemeasuredcurrent.Matlabsimulation softwareisusedtoverifytheapplicabilityoftheshemeindiferent transitionresistance，faultlocationandotherfaultsituations. The simulation resultsverify the feasibility of theproposed method.

Keywords：flexiblegroundingsystem；active distributionsystem；single-phaseground fault;transient voltage；model identification; fault line selection

0 引言

分布式電源的接入使得配電網(wǎng)從傳統(tǒng)無源網(wǎng)絡(luò)轉(zhuǎn)變成為有源網(wǎng)絡(luò)，這對(duì)其單相接地故障的處理能力提出了更高要求。（剩余7054字）