1000kV特高压主变结构原理及其保护配置浅析任宾,肖迈(国网江苏省电力有限公司超高压分公司,江苏南京211100)摘要:1000kV特高压变压器采用调压变与补偿变共体、主体变与调压补偿变相互独立的结构,变压器电压等级高、结构复杂。以±800kV泰州换流站为例,分析主变主体变及调压补偿变结构原理及其保护配置,研究调压补偿变保护不同档位时的差流计算方法和CT极性问题,通过现场计算得出调压变、补偿变各侧平衡系数和电流数值,经模拟试验得出调压变和补偿变不同档位下的极性结果。关键词:特高压;调压变;补偿变;差动保护中图分类号:TM402DOI:10.19768/j.cnki.dgjs.2022.24.055StructurePrincipleandProtectionConfigurationof1000kVUHVTransformerRENBin,XIAOMai(StateGridJiangsuEHVCompany,Nanjing211100,China)Abstract:The1000kVUHVtransformeradoptstheindependentstructureofvoltageregulationandcompensationtrans-former,maintransformerandvoltageregulationandcompensationdifference,andthetransformerhashighvoltagelevelandcomplexstructure.Takingthe±800kVTaizhouconverterstationasanexample,thestructuralprincipleandprotec-tionconfigurationofthemainvariablebodyandvoltageregulationcompensationtransformerareanalyzed,andthediffer-entialcurrentcalculationmethodandCTpolarityproblemwhenthevoltageregulationcompensationvariableprotecteddif-ferentgearsarestudied.Thebalancecoefficientandc...