750kV高压并联电抗器局放检测异常分析王生杰1，吴对平1，李渊1，马国祥2，王劲松3，沈洁1，宋通3（1.国网青海省电力公司电力科学研究院，西宁810008；2.国网青海省电力公司，西宁810008；3.保定天威新域科技发展有限公司，河北保定071025）摘要：文中介绍了一起750kV高压并联电抗器局放检测异常案例，通过带电检测和综合监护系统成功捕捉到了高压电抗器内部间歇性放电信号，进一步明确了微弱乙炔状态下的缺陷类型。通过超声传感器联合定位方法确定了局放源的位置，并通过解体确定了故障原因。本次高压电抗器局部放电信号异常的原因为电抗器内部由于长期振动的原因，导致电抗器出现了螺丝脱落，悬浮颗粒造成的油隙打火，而螺丝松动的原因为锁固剂涂覆不规范、螺栓紧固力矩不符合要求。通过对该案例缺陷的处理和分析，在高压电抗器安装、验收、运维检修等方面提出相应建议防止该类缺陷再次发生。关键词：高压并联电抗器；局部放电；带电检测；局放定位AbnormalityAnalysisof750kVHighVoltageShuntReactorThroughPartialDischargeDetectionWANGShengjie1，WUDuiping1，LIYuan1，MAGuoxiang2，WANGJinsong3，SHENJie1，SONGTong3（1.ElectricPowerResearchInstituteofStateGridQinghaiElectricPowerCompany，Xining810008，China；2.StateGridQinghaiElectricPowerCompany，Xining810008，China；3.BaodingTianweiXinyuTechnologyDevelopmentCo.，Ltd.，HeibeiBaoding071025，China）Abstract:Inthispaper，apartialdischargedetectionabnormalityof750kVhighvoltageshuntreactorisintroduced.Theinternalintermittentdischargesignalofthehighvoltagereactoriscapturedthroughlivedetectionandaintegrat⁃edmonitoringsystem，andtypeofthefaultundertheweakacetyleneconditionisdefinedfurther.Thepositionofthepartialdischargesourceisdefinedthroughthejointlocationmethodoftheultrasonicsensorandthereasonofthefaultisdefinedthroughthedisassembly.Thereasonfortheabnormalpartialdischargesignalisduetolong⁃termvi⁃brationinsidethereactor，causingthescrewstopeeloffandoilgapsparkduetosuspendedparticle.While，therea⁃sonofscrewloosenessisirregularapplicationofthelockingagentandthetighteningtorqueoftheboltsnotcomply⁃ingwithrequirement.Throughouttheprocessingandanalysisofthedefectofthecase，correspondingsuggestion...
