公开(公告)号：US09548606B2

公开(公告)日：2017-01-17

申请号：US13610447

申请日：2012-09-11

申请人： Daiju Itagaki ,  Shogo Miura ,  Katsuhiko Sekiguchi ,  Satoshi Hirano

发明人： Daiju Itagaki ,  Shogo Miura ,  Katsuhiko Sekiguchi ,  Satoshi Hirano

IPC分类号： G06F1/28 ,  H02H7/26 ,  H02H3/02 ,  H02H1/00 ,  H03M3/00

CPC分类号： H02H7/26 ,  H02H1/0092 ,  H02H3/02 ,  H03M3/43 ,  H03M3/462

摘要： According to one embodiment, the A/D conversion unit includes a ΔΣ modulating device which samples the analog electric quantity provided by the electric power system with a predetermined modulation frequency and outputs a bit stream changing over time of single bit obtained by performing ΔΣ modulation, and the digital operation processing unit includes one or more digital filters which inputs the bit stream from the ΔΣ modulating device and of which frequency characteristics differ according to a type of protection control operation, and one or more operation processing elements which perform different kinds of protection control operation processing, based on the bit stream provided by the digital filter.

摘要翻译： 根据一个实施例，A / D转换单元包括ΔΣ调制装置，其以预定的调制频率对由电力系统提供的模拟电量进行采样，并且输出通过执行ΔΣ调制获得的单个位的随时间变化的比特流， 并且数字运算处理单元包括一个或多个数字滤波器，其输入来自ΔΣ调制装置的比特流，并且其频率特性根据保护控制操作的类型而不同，以及执行不同种类的保护的一个或多个操作处理单元 基于由数字滤波器提供的比特流进行控制操作处理。

公开(公告)号：US07199989B2

公开(公告)日：2007-04-03

申请号：US10669704

申请日：2003-09-25

申请人： Daiju Itagaki ,  Hiroaki Ayakawa ,  Itsuo Shuto

发明人： Daiju Itagaki ,  Hiroaki Ayakawa ,  Itsuo Shuto

IPC分类号： H02H3/00

CPC分类号： H02H7/261 ,  H02H1/0092

摘要： In a digital protection relay with a time sync function, the sampling timing of which is specified based on a reference timing transmitted from a time signal generator to a time sync unit, with a determination value. The time sync unit includes a reception circuit that receives a discrimination code and time data transmitted from the time signal generator, a code discrimination circuit that discriminates the reference timing on condition that the received discrimination code coincides with a desired code, a time calculation circuit that calculates the sampling timing on the basis of the discriminated reference timing and the time data, and a sampling sync circuit that specifies the sampling timing of a digital quantity of electricity on the basis of the calculated sampling timing.

摘要翻译： 在具有时间同步功能的数字保护继电器中，其采样定时基于从时间信号发生器发送到时间同步单元的参考定时被指定，具有确定值。 时间同步单元包括接收鉴别码和从时间信号发生器发送的时间数据的接收电路，在接收到的鉴别码与期望码一致的条件下鉴别基准定时的码鉴别电路，时间计算电路 基于所识别的基准定时和时间数据来计算采样定时，以及采样同步电路，其基于所计算的采样定时来指定数字量的采样定时。