专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明公开

KR1020030028670A 전압-전류 추이를 이용한 변압기 보호 계전 방법 有权
标题翻译：使用电压 - 电流转换的变压器保护继电器方法
公开(公告)号：KR1020030028670A
公开(公告)日：2003-04-10
申请号：KR1020010059361
申请日：2001-09-25
申请人： 이승재 , 최면송 , 강상희 , 주식회사프로컴시스템
发明人： 김상태 , 진보건 , 이승재 , 강상희 , 윤상현 , 이태성
IPC分类号： H02H7/045
摘要： PURPOSE: A transformer protecting relay method is provided to shorten the time required for harmonic analysis and achieve improved accuracy of analysis on the internal trouble. CONSTITUTION: A transformer protecting relay method comprises a first step(S10) of setting a trouble sign determination reference value, trouble confirmation reference value and terminal voltage RMS increase range reference value; a second step(S20) of sampling differential current value of each phase of a transformer, and obtaining value of fundamental wave of differential current; a third step(S30) of sampling primary terminal voltage of each phase of the transformer, and obtaining RMS value of the terminal voltage; a fourth step(S40) of comparing value of fundamental wave of differential current of each phase with the trouble signal determination reference value, determining as an internal trouble if value of fundamental wave of one or more phases is larger than the trouble signal determination reference value, and determining as a trouble sign if values of all phases are larger than the trouble signal determination reference value; a fifth step(S60) of comparing value of fundamental wave of differential current of each phase with the trouble confirmation reference value, and determining as an internal trouble if value of fundamental wave of differential current of one or more phases is larger than the trouble confirmation reference value; and a sixth step(S70-1,S70-2) of obtaining increase range of RMS value of the terminal voltage, and determining as an internal trouble when RMS value of the terminal voltage is increased in one or more phases, if it is not determined as an internal trouble in the fifth step.
摘要翻译：目的：提供变压器保护继电器方法，缩短谐波分析所需的时间，提高内部故障分析的准确性。构成：变压器保护继电器方法包括设置故障判定基准值，故障确认参考值和端子电压RMS增加范围参考值的第一步骤（S10）对变压器各相的差分电流值进行采样的第二步（S20），得到差动电流的基波值; 对变压器的各相的初级端子电压进行采样的第三步骤（S30），得到端子电压的RMS值; 比较各相的差分电流的基波值与故障信号判定基准值的第四步骤（S40），如果一个或多个相位的基波值大于故障信号判定基准值，则判断为内部故障并且如果所有相位的值都大于故障信号确定参考值，则确定为故障符号; 比较各相的差分电流的基波值与故障确认参考值的第五步（S60），如果一个或多个相的差动电流的基波值大于故障确认，则确定为内部故障参考值; 以及获得端子电压的RMS值的增加范围的第六步骤（S70-1，S70-2），并且如果不是在一个或多个相位中增加端子电压的RMS值，则确定为内部故障在第五步确定为内部麻烦。

2. 发明授权

KR100442506B1 전압-전류 추이를 이용한 변압기 보호 계전 방법 有权
标题翻译： 전압 - 전류추이를이용한변압기보호계전방법
公开(公告)号：KR100442506B1
公开(公告)日：2004-07-30
申请号：KR1020010059361
申请日：2001-09-25
申请人： 이승재 , 최면송 , 강상희 , 주식회사프로컴시스템
发明人： 김상태 , 진보건 , 이승재 , 강상희 , 윤상현 , 이태성
IPC分类号： H02H7/045
摘要： PURPOSE: A transformer protecting relay method is provided to shorten the time required for harmonic analysis and achieve improved accuracy of analysis on the internal trouble. CONSTITUTION: A transformer protecting relay method comprises a first step(S10) of setting a trouble sign determination reference value, trouble confirmation reference value and terminal voltage RMS increase range reference value; a second step(S20) of sampling differential current value of each phase of a transformer, and obtaining value of fundamental wave of differential current; a third step(S30) of sampling primary terminal voltage of each phase of the transformer, and obtaining RMS value of the terminal voltage; a fourth step(S40) of comparing value of fundamental wave of differential current of each phase with the trouble signal determination reference value, determining as an internal trouble if value of fundamental wave of one or more phases is larger than the trouble signal determination reference value, and determining as a trouble sign if values of all phases are larger than the trouble signal determination reference value; a fifth step(S60) of comparing value of fundamental wave of differential current of each phase with the trouble confirmation reference value, and determining as an internal trouble if value of fundamental wave of differential current of one or more phases is larger than the trouble confirmation reference value; and a sixth step(S70-1,S70-2) of obtaining increase range of RMS value of the terminal voltage, and determining as an internal trouble when RMS value of the terminal voltage is increased in one or more phases, if it is not determined as an internal trouble in the fifth step.
摘要翻译：目的：提供变压器保护继电器方法，以缩短谐波分析所需的时间，并提高分析内部故障的准确性。构成：一种变压器保护继电器方法，包括设置故障标志确定参考值，故障确认参考值和端子电压RMS增加范围参考值的第一步骤（S10）第二步骤（S20），对变压器的各相的差动电流值进行采样，得到差动电流的基波值; 第三步骤（S30），对变压器的各相的初级端子电压进行采样，并获得端子电压的RMS值; 第四步骤（S40），将各相的差动电流的基波的值与故障信号判定基准值进行比较，如果一个或多个相的基波的值大于故障信号判定基准值，则判定为内部故障并且如果所有相的值大于所述故障信号确定参考值，则将其确定为故障标记; 第五步骤（S60），将各相的差动电流的基波的值与故障确认基准值进行比较，如果一个或多个相的差动电流的基波的值大于故障确认，则判定为内部故障参考值; 和第六步骤（S70-1，S70-2），其获得所述端子电压的RMS值的增加范围，并且当所述端子电压的RMS值在一个或更多个相位增加时确定为内部故障，如果不是确定为第五步中的内部问题。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式