公开(公告)号：US20150007635A1

公开(公告)日：2015-01-08

申请号：US14368476

申请日：2012-12-26

Applicant: HYOSUNG CORPORATION

Inventor： Young-Min Kim ,  Sung-Jik Kim ,  Hwang-Dong Seo ,  Soo-Jin Lee

IPC: G01R31/40 ,  G01N33/26 ,  G01N33/00

CPC classification number: G01R31/40 ,  G01F1/698 ,  G01F1/72 ,  G01F25/0007 ,  G01F25/0015 ,  G01F25/0053 ,  G01N33/0004 ,  G01N33/26 ,  G01N33/2841 ,  G01R31/027 ,  H01F27/12 ,  H01F27/402

Abstract: A method for accurately diagnosing an internal fault of an oil-immersed transformer by analyzing content ratios of dissolved gases generated when the internal fault occurs in the oil-immersed transformer is provided. The method diagnoses the internal fault by analyzing the dissolved gases contained in the insulating oil of the oil-immersed transformer for internal fault diagnosis, wherein the method comprises: a first step of extracting H2, CH4, C2H4, and C2H2 from the dissolved gases; a second step of calculating a content ratio (%) of each dissolved gas from the total content of the four dissolved gases selected from the extracted five dissolved gases; and a third step of determining the internal fault of the oil-immersed transformer for diagnosis corresponding to an internal fault region according to content ratio (%) values of the calculated four dissolved gases and predetermined content ratios (%) of the four dissolved gases.

Abstract translation: 提供了一种通过分析油浸式变压器内部故障时产生的溶解气体的含量比来精确地诊断油浸式变压器的内部故障的方法。 该方法通过分析油浸式变压器绝缘油中含有的溶解气体进行内部故障诊断来诊断内部故障，其中包括：从溶解气体中提取H2，CH4，C2H4和C2H2的第一步骤; 从从所提取的五种溶解气体中选出的四种溶解气体的总含量计算每种溶解气体的含量比（％）的第二步骤; 以及根据计算出的四种溶解气体的含量比（％）值和四种溶解气体的预定含量比（％）来确定与内部故障区域相对应的用于诊断的油浸式变压器的内部故障的第三步骤。

公开(公告)号：US09535134B2

公开(公告)日：2017-01-03

申请号：US14368476

申请日：2012-12-26

Applicant: HYOSUNG CORPORATION

Inventor： Young-Min Kim ,  Sung-Jik Kim ,  Hwang-Dong Seo ,  Soo-Jin Lee

IPC: G01F25/00 ,  G01R31/40 ,  G01N33/28 ,  G01N33/00 ,  G01N33/26 ,  H01F27/12 ,  H01F27/40 ,  G01F1/72 ,  G01F1/698 ,  G01R31/02

CPC classification number: G01R31/40 ,  G01F1/698 ,  G01F1/72 ,  G01F25/0007 ,  G01F25/0015 ,  G01F25/0053 ,  G01N33/0004 ,  G01N33/26 ,  G01N33/2841 ,  G01R31/027 ,  H01F27/12 ,  H01F27/402

Abstract: A method for accurately diagnosing an internal fault of an oil-immersed transformer by analyzing content ratios of dissolved gases generated when the internal fault occurs in the oil-immersed transformer is provided. The method diagnoses the internal fault by analyzing the dissolved gases contained in the insulating oil of the oil-immersed transformer for internal fault diagnosis, wherein the method comprises: a first step of extracting H2, CH4, C2H4, and C2H2 from the dissolved gases; a second step of calculating a content ratio (%) of each dissolved gas from the total content of the four dissolved gases selected from the extracted five dissolved gases; and a third step of determining the internal fault of the oil-immersed transformer for diagnosis corresponding to an internal fault region according to content ratio (%) values of the calculated four dissolved gases and predetermined content ratios (%) of the four dissolved gases.

Abstract translation: 提供了一种通过分析油浸式变压器内部故障时产生的溶解气体的含量比来精确地诊断油浸式变压器的内部故障的方法。 该方法通过分析油浸式变压器绝缘油中含有的溶解气体进行内部故障诊断来诊断内部故障，其中包括：从溶解气体中提取H2，CH4，C2H4和C2H2的第一步骤; 从从所提取的五种溶解气体中选出的四种溶解气体的总含量计算每种溶解气体的含量比（％）的第二步骤; 以及根据计算出的四种溶解气体的含量比（％）值和四种溶解气体的预定含量比（％）来确定与内部故障区域相对应的用于诊断的油浸式变压器的内部故障的第三步骤。