風(fēng)電場(chǎng)戶(hù)外35kv交流高壓跌落式熔斷器故障分析及改進(jìn)措施

1、內(nèi)蒙古電力技術(shù)INNERM0NG()LIA1412ECTI／1CPOWER2013年第31卷第1icIjdoi：lO3969~issn10086218201301001風(fēng)電場(chǎng)戶(hù)外35kV交流高壓跌落式熔斷器故障分析及改進(jìn)措施劉尚偉，盧晗，蘇國(guó)成(內(nèi)蒙古大唐國(guó)際風(fēng)電開(kāi)發(fā)有限公司，內(nèi)蒙古呼和浩特OLOO5O)摘要：內(nèi)蒙古大唐國(guó)際風(fēng)電開(kāi)發(fā)有限公司紅牧風(fēng)電場(chǎng)35kV集電線路終端桿處跌落式熔斷器的靜觸頭頻繁燒毀，嚴(yán)重影響了供電可靠性。對(duì)故障的原因

2、進(jìn)行分析后認(rèn)為，由于跌落式熔斷器采用上觸頭彈簧施壓接觸模式，上動(dòng)觸頭與靜觸頭咬合松動(dòng)，造成上觸頭發(fā)熱甚至燒紅，彈性下降，加劇松動(dòng)，“3高壓熔斷管被風(fēng)吹掉，在動(dòng)、靜觸頭分離瞬間產(chǎn)生電弧，導(dǎo)致靜觸頭燒毀。將老式單一跌落式熔斷器改為隔離開(kāi)關(guān)一熔斷器組合設(shè)備，改造后設(shè)備運(yùn)行正常，再未發(fā)生上述故障。關(guān)鍵詞：風(fēng)電場(chǎng)；跌落式熔斷器；靜觸頭；彈簧施壓接觸模式；隔離開(kāi)關(guān)一熔斷器組合設(shè)備文獻(xiàn)標(biāo)志碼：B中圖分類(lèi)號(hào)：TM563文章編號(hào)：1008—6218(20

3、13)O1—0090—03AnalysisandImprovementMeasurestoWindFarm35kVOutdoorACHighvoltageDropTypeFuseFailureIiuShangwei，LuHan，SuGuocheng(InnerMongoliaDatangInternationalWindPowerDevelopmentCo，LtdInnerMongoliaHohhot010050)Abstract：In

4、HongmuWindFarmofInnerMongoliaDatangInternationalWindPowerDevelopmentCo，Ltd，thestaticcontactofdrop—outfuseswhichsettle35kVcollectorlineterminalrodwereburnedfrequently，itimpactedthepowersupplyreliabilityseriouslyThroughthe

5、faultanalysis，itwasfoundthatthemodelofdrop—outfusesiscontactspringDressureIfthedynamiccontactandstaticcontactocclusaltouchbecameloose，dynamicc0ntactWouldburnredelasticityofdynamiccontactwoulddecrease，whichwouldaggravatel

6、ooseWhenhighvoltagefusewasblewoffarcwouldemergewhenthedynamicandstaticcontactseparate，resultinginstaticcontactburnedAdoptnewmethodthatusingisolatingswitchandfusecombinationequipmentreplacesingledrop——outfusecouldsolvethe

7、problemKeywords：windfarm；dropoutfuse；staticcontact；springpressurecontactmode；isolatingswitchandfusecombinationequipment0引言跌落式熔斷器裝配在配電變壓器高壓側(cè)或配電線分支線路上，起到輸電線路、電力變壓器過(guò)流和短路保護(hù)以及分合額定負(fù)荷電流的作用，是風(fēng)電場(chǎng)35kv集電線路保護(hù)的必備元件。跌落式熔斷器f收稿日期12012—0