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1. 发明申请

US20080112102A1 Sampling frequency control method and protective relay 有权
标题翻译：采样频率控制方法和保护继电器
公开(公告)号：US20080112102A1
公开(公告)日：2008-05-15
申请号：US11976567
申请日：2007-10-25
申请人： Shigetoo Oda
发明人： Shigetoo Oda
IPC分类号： H02H3/00 , G01R21/00
CPC分类号： G01R19/2509 , G01R19/2513
摘要： A sampling frequency control method includes a difference calculating step ST1 of calculating the difference between sampled values obtained through sampling of an AC quantity of electricity of a power system at time points that are separated by a prescribed time period of the AC quantity of electricity; an effective value calculating step ST2 of calculating an effective value of the AC quantity of electricity and an effective value of the difference; a ratio calculating step ST3 of calculating the ratio K of the effective value of the difference to the effective value of the AC quantity of electricity; and a control step of controlling the sampling frequency by controlling the sampling period on the basis of the calculated ratio K so that it follows the frequency of the AC quantity of electricity.
摘要翻译：采样频率控制方法包括：差分计算步骤ST1，计算通过在交流电量的规定时间间隔分开的时间点对电力系统的交流电量进行采样而获得的采样值之间的差; 计算交流电量的有效值和差的有效值的有效值计算步骤ST2; 比率计算步骤ST3，计算该差异的有效值与AC电量的有效值的比率K; 以及控制步骤，通过基于计算的比率K控制采样周期，使得其遵循交流电量的频率来控制采样频率。

2. 发明申请

US20150171621A1 CURRENT DIFFERENTIAL RELAY 有权
标题翻译：当前差分继电器
公开(公告)号：US20150171621A1
公开(公告)日：2015-06-18
申请号：US14409311
申请日：2012-06-26
申请人： Shigetoo Oda
发明人： Shigetoo Oda
IPC分类号： H02H7/26
CPC分类号： H02H7/263 , G01R19/2513 , H02H3/006 , H02H3/30
摘要： MUs and IEDs are included. Each of the IEDs includes a signal control unit that derives the time difference between the sampling timings in the MUs on the basis of digital data from one end of a protection area and digital data from the other end of the protection area, controls the cycle of a sampling-timing control signal to eliminate this time difference, and outputs this controlled sampling-timing control signal to a merging unit corresponding to each computation unit. Each of the MUs includes a control-signal output circuit that generates a sampling signal synchronized with the sampling-timing control signal from the IEDs and outputs this sampling signal as a control signal, and a data output unit that converts an electrical input to digital data and outputs the digital data.
摘要翻译：包括MU和IED。每个IED包括信号控制单元，其根据来自保护区域的一端的数字数据和来自保护区域的另一端的数字数据，导出MU中的采样定时之间的时间差，控制周期采样定时控制信号，以消除该时间差，并将该受控采样定时控制信号输出到与每个计算单元对应的合并单元。每个MU包括控制信号输出电路，其产生与来自IED的采样定时控制信号同步的采样信号，并输出该采样信号作为控制信号;以及数据输出单元，其将电输入转换为数字数据并输出数字数据。

3. 发明授权

US08923361B2 Protection control apparatus 有权
标题翻译：保护控制装置
公开(公告)号：US08923361B2
公开(公告)日：2014-12-30
申请号：US14350574
申请日：2011-10-13
申请人： Shigetoo Oda
发明人： Shigetoo Oda
IPC分类号： H04B1/713 , H04L7/00
CPC分类号： H04L7/0016 , H02H7/30
摘要： A protection control apparatus includes a control-signal output circuit configured to generate a sampling signal in synchronization with a 1PPS signal and output, as a control signal, data numbers cyclically counted up every time the sampling signal is generated and the sampling signal and a data output unit configured to convert a system electrical quantity into digital data based on the control signal and output the digital data. The control-signal output circuit includes a number-of-clocks calculating circuit configured to calculate a second number of clocks and a third number of clocks and a synchronization control unit configured to calculate a difference between a first number of clocks and a second number of clocks, control a cycle of the sampling signal based on the difference and the third number of clocks, and synchronize generation timing of the sampling signal with the 1PPS signal.
摘要翻译：保护控制装置包括：控制信号输出电路，被配置为与1PPS信号同步地生成采样信号，并且作为控制信号输出在每次产生采样信号时循环计数的数据数和采样信号和数据输出单元，被配置为基于所述控制信号将系统电量转换为数字数据并输出所述数字数据。控制信号输出电路包括：时钟数计算电路，被配置为计算第二数量的时钟和第三数量的时钟;以及同步控制单元，被配置为计算第一数量的时钟和第二数量的时钟之间的差时钟，基于差和第三数量的时钟控制采样信号的周期，并且使采样信号的生成定时与1PPS信号同步。

4. 发明授权

US09680297B2 Current differential relay 有权
公开(公告)号：US09680297B2
公开(公告)日：2017-06-13
申请号：US14409311
申请日：2012-06-26
申请人： Shigetoo Oda
发明人： Shigetoo Oda
IPC分类号： H02H7/26 , H02H3/00 , H02H3/30 , G01R19/25
CPC分类号： H02H7/263 , G01R19/2513 , H02H3/006 , H02H3/30
摘要： MUs and IEDs are included. Each of the IEDs includes a signal control unit that derives the time difference between the sampling timings in the MUs on the basis of digital data from one end of a protection area and digital data from the other end of the protection area, controls the cycle of a sampling-timing control signal to eliminate this time difference, and outputs this controlled sampling-timing control signal to a merging unit corresponding to each computation unit. Each of the MUs includes a control-signal output circuit that generates a sampling signal synchronized with the sampling-timing control signal from the IEDs and outputs this sampling signal as a control signal, and a data output unit that converts an electrical input to digital data and outputs the digital data.

5. 发明授权

US07742884B2 Sampling frequency control method and protective relay 有权
标题翻译：采样频率控制方法和保护继电器
公开(公告)号：US07742884B2
公开(公告)日：2010-06-22
申请号：US11976567
申请日：2007-10-25
申请人： Shigetoo Oda
发明人： Shigetoo Oda
IPC分类号： G01R21/00
CPC分类号： G01R19/2509 , G01R19/2513
摘要： A sampling frequency control method includes a difference calculating step ST1 of calculating the difference between sampled values obtained through sampling of an AC quantity of electricity of a power system at time points that are separated by a prescribed time period of the AC quantity of electricity; an effective value calculating step ST2 of calculating an effective value of the AC quantity of electricity and an effective value of the difference; a ratio calculating step ST3 of calculating the ratio K of the effective value of the difference to the effective value of the AC quantity of electricity; and a control step of controlling the sampling frequency by controlling the sampling period on the basis of the calculated ratio K so that it follows the frequency of the AC quantity of electricity.
摘要翻译：采样频率控制方法包括：差分计算步骤ST1，计算通过在交流电量的规定时间间隔分开的时间点对电力系统的交流电量进行采样而获得的采样值之间的差; 计算交流电量的有效值和差的有效值的有效值计算步骤ST2; 比率计算步骤ST3，计算该差异的有效值与AC电量的有效值的比率K; 以及控制步骤，通过基于计算的比率K控制采样周期，使得其遵循交流电量的频率来控制采样频率。

6. 发明申请

US20080137246A1 Relay system in substation and PCM current differential relay system 审中-公开
标题翻译：变电站继电系统和PCM电流差动继电器系统
公开(公告)号：US20080137246A1
公开(公告)日：2008-06-12
申请号：US11978625
申请日：2007-10-30
申请人： Shigetoo Oda
发明人： Shigetoo Oda
IPC分类号： H02H3/027 , H02H7/045
CPC分类号： H02H3/30
摘要： A PCM current differential relay is provided with a sampling synchronizing circuit unit which, on the basis of a deviation in sampling timing between digital current data of a local end and digital current data of a remote end inputted from the remote end, synchronizes the digital current data of the local end and the digital current data of the remote end. In accordance with the digital current data of the local end and the digital current data of the remote end synchronized by the sampling synchronizing circuit unit, relay operation of the PCM current differential relay is carried out by a relay operation unit of the PCM current differential relay.
摘要翻译： PCM电流差动继电器具有采样同步电路单元，其基于本端数字电流数据与从远端输入的远端的数字电流数据之间的采样定时偏差，同步数字电流本端的数据和远端的数字电流数据。根据本端的数字电流数据和由采样同步电路单元同步的远端数字电流数据，PCM电流差动继电器的继电器动作由PCM电流差动继电器的继电器运行单元进行。

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