公开(公告)号：US20070007943A1

公开(公告)日：2007-01-11

申请号：US11476891

申请日：2005-05-09

申请人： Yong-Cheol Kang ,  Sang-Hee Kang

发明人： Yong-Cheol Kang ,  Sang-Hee Kang

IPC分类号： G01R15/18

CPC分类号： H02H7/045

摘要： Disclosed is a compensated current differential relaying method and system for protecting a transformer more correctly by calculating and estimating an exciting current including a core-loss current and a magnetizing current, and, in particular, to a compensated current differential relaying method and system which can protect the transformer correctly irrespective of the level of remanent flux.

摘要翻译： 公开了一种补偿电流差动继电方法和系统，用于通过计算和估计包括铁心损耗电流和励磁电流的励磁电流来更正确地保护变压器，特别涉及一种补偿电流差动继电方法和系统， 正确地保护变压器，而不考虑剩余通量的水平。

公开(公告)号：US06617839B2

公开(公告)日：2003-09-09

申请号：US10204769

申请日：2002-08-23

申请人： Yong-Cheol Kang ,  Sang-Hee Kang ,  Seung-Hun Ok

发明人： Yong-Cheol Kang ,  Sang-Hee Kang ,  Seung-Hun Ok

IPC分类号： G01R3300

CPC分类号： H02H1/046

摘要： Disclosed is a method for detecting saturation of a current transformer. The method determines whether or not a change of a secondary current generated in a current transformer is due to the saturation of the current transformer.

公开(公告)号：US20050035751A1

公开(公告)日：2005-02-17

申请号：US10494870

申请日：2003-04-17

申请人： Yong-Cheol Kang ,  Sang-Hee Kang ,  Yi-Jae Lim

发明人： Yong-Cheol Kang ,  Sang-Hee Kang ,  Yi-Jae Lim

IPC分类号： H02H1/00 ,  H02H1/04 ,  G01R33/00

CPC分类号： H02H1/046 ,  H02H1/0092

摘要： The present invention relates to a method for preventing the unwanted maloperation of a protective relay system that is caused by the imprecise detection of an actual secondary current value resulting from a measured secondary current being distorted. The method comprises the steps of calculating difference values having at least second order for sampled secondary currents; comparing absolute values of the difference values with a predetermined critical value, and determining a saturation starting moment of a current transformer when one of the absolute values exceeds the predetermined critical value; obtaining a magnetizing current at the saturation starting moment using the difference values if the saturation starting moment is determined, and obtaining a magnetic flux value in a steel core of the current transformer from a magnetization curve using the magnetizing current; calculating a magnetic flux value at a time after the saturation starting moment using a secondary current value measured at that time and the magnetic flux value obtained at the saturation starting moment so as to obtain a secondary current value consistent with a current transformation ratio at that time; obtaining a magnetizing current at that time from the magnetization curve using the magnetic flux value calculated at that time; and obtaining the secondary current value consistent with the current transformation ratio by adding the obtained magnetizing current and the measured secondary current value.

摘要翻译： 本发明涉及一种用于防止由于测量的二次电流失真导致的实际二次电流值的不精确检测而导致的保护继电器系统的不期望的误动作的方法。 该方法包括以下步骤：计算具有至少二次采样二次电流的差值; 将所述差值的绝对值与预定临界值进行比较，以及当绝对值之一超过预定临界值时确定电流互感器的饱和开始时刻; 如果确定饱和起动矩，则使用差值获得在饱和起动时刻的磁化电流，并且使用磁化电流从磁化曲线获得电流互感器的钢芯中的磁通量值; 使用该时刻测定的二次电流值和饱和开始时刻得到的磁通值计算饱和开始时刻之后的时间的磁通值，以获得与当时的当前变换比一致的二次电流值 ; 使用当时计算出的磁通值，从磁化曲线获得此时的磁化电流; 并且通过将获得的磁化电流和所测量的二次电流值相加来获得与电流变换比一致的二次电流值。

公开(公告)号：US07340355B2

公开(公告)日：2008-03-04

申请号：US11476891

申请日：2005-05-09

申请人： Yong-Cheol Kang ,  Sang-Hee Kang

发明人： Yong-Cheol Kang ,  Sang-Hee Kang

IPC分类号： G01R31/00

CPC分类号： H02H7/045

摘要： Disclosed is a compensated current differential relaying method and system for protecting a transformer more correctly by calculating and estimating an exciting current including a core-loss current and a magnetizing current, and, in particular, to a compensated current differential relaying method and system which can protect the transformer correctly irrespective of the level of remanent flux.

摘要翻译： 公开了一种补偿电流差动继电方法和系统，用于通过计算和估计包括铁心损耗电流和励磁电流的励磁电流来更正确地保护变压器，特别涉及一种补偿电流差动继电方法和系统， 正确地保护变压器，而不考虑剩余通量的水平。

公开(公告)号：US07103485B2

公开(公告)日：2006-09-05

申请号：US10494870

申请日：2003-04-17

申请人： Yong-Cheol Kang ,  Sang-Hee Kang ,  Yi-Jae Lim

发明人： Yong-Cheol Kang ,  Sang-Hee Kang ,  Yi-Jae Lim

IPC分类号： G06F17/13

CPC分类号： H02H1/046 ,  H02H1/0092

摘要： A method for preventing the unwanted maloperation of a protective relay system that is caused by the imprecise detection of an actual secondary current value resulting from a measured secondary current being distorted comprises the steps of calculating difference values for sampled secondary currents; comparing absolute values of the difference values with a predetermined critical value, and determining a saturation starting moment of a current transformer when one of the absolute values exceeds the predetermined critical value; obtaining a magnetizing current at the saturation starting moment using the difference values if the saturation starting moment is determined, and obtaining a magnetic flux value in a steel core of the current transformer from a magnetization curve using the magnetizing current; calculating a magnetic flux value at a time after the saturation starting moment using a secondary current value measured at that time and the magnetic flux value obtained at the saturation starting moment so as to obtain a secondary current value consistent with a current transformation ratio at that time; obtaining a magnetizing current at that time from the magnetization curve using the magnetic flux value calculated at that time; and obtaining the secondary current value consistent with the current transformation ratio by adding the obtained magnetizing current and the measured secondary current value.

摘要翻译： 一种用于防止由测量的二次电流失真导致的实际二次电流值的不精确检测引起的保护继电器系统的不期望的误操作的方法包括以下步骤：计算采样次级电流的差值; 将所述差值的绝对值与预定临界值进行比较，以及当绝对值之一超过预定临界值时确定电流互感器的饱和开始时刻; 如果确定饱和起动矩，则使用差值获得在饱和起动时刻的磁化电流，并且使用磁化电流从磁化曲线获得电流互感器的钢芯中的磁通量值; 使用该时刻测定的二次电流值和饱和开始时刻得到的磁通值计算饱和开始时刻之后的时间的磁通值，以获得与当时的当前变换比一致的二次电流值 ; 使用当时计算出的磁通值，从磁化曲线获得此时的磁化电流; 并且通过将获得的磁化电流和所测量的二次电流值相加来获得与电流变换比一致的二次电流值。

公开(公告)号：US07602660B2

公开(公告)日：2009-10-13

申请号：US11773926

申请日：2007-07-05

申请人： Sang-Hee Kang

发明人： Sang-Hee Kang

IPC分类号： G11C29/00

CPC分类号： G11C29/838 ,  G11C29/787

摘要： A redundancy circuit in a semiconductor memory device comprises a fuse set controller configured to output a redundancy enable signal enabled according to applied address signals; a redundant selector; a spare redundant selector; and a spare fuse controller configured to be controlled by the redundancy enable signal, and to output a selection control signal that selects at least one of the redundant selector and the spare redundant selector in accordance with an internal fuse option.

摘要翻译： 半导体存储器件中的冗余电路包括：熔丝组控制器，配置为输出根据所施加的地址信号使能的冗余使能信号; 冗余选择器 备用冗余选择器; 以及备用熔丝控制器，其被配置为由所述冗余启用信号控制，并且输出选择控制信号，所述选择控制信号根据内部熔丝选项选择所述冗余选择器和备用冗余选择器中的至少一个。

公开(公告)号：US07282986B2

公开(公告)日：2007-10-16

申请号：US11193814

申请日：2005-07-27

申请人： Sang-Hee Kang ,  Jun-Gi Choi ,  Yong-Kyu Kim

发明人： Sang-Hee Kang ,  Jun-Gi Choi ,  Yong-Kyu Kim

IPC分类号： G05F1/10

CPC分类号： H02M3/07 ,  H02M2003/071

摘要： The present invention is related to a negative voltage generating circuit for reliably providing the semiconductor integrated circuit (IC) with a negative voltage. An electric charge pumping device generates a negative voltage by pumping an electric charge to a predetermined level supplied to one of a first node and a second node. A controlling device provides first and second pumping clock signal being clocked alternately every predetermined interval in response to a level of the negative voltage. A pumping controller controls an amount of electric charge supplied to the first node and the second node in response to the first and second pumping clock signals. Further, a reset controller resets the first node and the second node of the electric charge pumping means as the level of the negative voltage when the first and second pumping clock signals are inactivated.

摘要翻译： 本发明涉及一种用于将半导体集成电路（IC）可靠地提供负电压的负电压产生电路。 电荷泵送装置通过将电荷泵送到提供给第一节点和第二节点之一的预定水平来产生负电压。 控制装置响应于负电压的电平，以预定间隔交替地提供按时钟交替的第一和第二泵送时钟信号。 泵送控制器响应于第一和第二泵送时钟信号控制提供给第一节点和第二节点的电荷量。 此外，复位控制器将电荷泵送装置的第一节点和第二节点复位为当第一和第二抽运时钟信号失活时的负电压的电平。

公开(公告)号：US07257037B2

公开(公告)日：2007-08-14

申请号：US11262105

申请日：2005-10-28

申请人： Sang-Hee Kang

发明人： Sang-Hee Kang

IPC分类号： G11C7/00

CPC分类号： G11C29/838 ,  G11C29/787

摘要： A redundancy circuit in a semiconductor memory device comprises a fuse set controller configured to output a redundancy enable signal enabled according to applied address signals; a redundant selector; a spare redundant selector; and a spare fuse controller configured to be controlled by the redundancy enable signal, and to output a selection control signal that selects at least one of the redundant selector and the spare redundant selector in accordance with an internal fuse option.

摘要翻译： 半导体存储器件中的冗余电路包括：熔丝组控制器，配置为输出根据所施加的地址信号使能的冗余使能信号; 冗余选择器 备用冗余选择器; 以及备用熔丝控制器，其被配置为由所述冗余启用信号控制，并且输出选择控制信号，所述选择控制信号根据内部熔丝选项选择所述冗余选择器和备用冗余选择器中的至少一个。

公开(公告)号：US07583134B2

公开(公告)日：2009-09-01

申请号：US12073115

申请日：2008-02-29

申请人： Sang-Hee Kang

发明人： Sang-Hee Kang

IPC分类号： G05F1/10

CPC分类号： G11C5/145

摘要： A semiconductor integrated circuit comprising: a first voltage generator configured to generate a first voltage in response to activation of a first enable signal, wherein the first enable signal is generated by detecting a level of the first voltage; and a second voltage generator configured to generate a second voltage in response to activation of at least one of the first enable signal and a second enable signal, wherein the second enable signal is generated by detecting a level of the second voltage.

摘要翻译： 一种半导体集成电路，包括：第一电压发生器，被配置为响应于第一使能信号的激活而产生第一电压，其中通过检测第一电压的电平来产生第一使能信号; 以及第二电压发生器，被配置为响应于所述第一使能信号和第二使能信号中的至少一个的激活而产生第二电压，其中通过检测所述第二电压的电平来产生所述第二使能信号。

公开(公告)号：US20080151679A1

公开(公告)日：2008-06-26

申请号：US12072600

申请日：2008-02-26

申请人： Kyoung-Nam Kim ,  Sang-Hee Kang

发明人： Kyoung-Nam Kim ,  Sang-Hee Kang

IPC分类号： G11C8/18

CPC分类号： G11C7/1072

摘要： A synchronous semiconductor memory device of the present invention includes: an operation controller for outputting a column active sense pulse in response to a column address and a column command signal; a shift register controller, activated in response to the column active sense pulse, for dividing a clock signal by N to thereby output a divided clock signal, N being a positive integer greater than 1; a plurality of shift registers connected in series and synchronized with the divided clock signal, wherein each shift register transmits the column active sense pulse to the next shift register; and a column active control signal generator for logically combining outputs of the shift registers to thereby generate a column active control signal.