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31. 发明授权

US08655608B2 Symmetrical component amplitude and phase comparators for line protection using time stamped data 有权
标题翻译：对称分量幅度和相位比较器，用于使用时间戳数据进行线路保护
公开(公告)号：US08655608B2
公开(公告)日：2014-02-18
申请号：US12239615
申请日：2008-09-26
申请人： Armando Guzman-Casillas
发明人： Armando Guzman-Casillas
IPC分类号： G01R31/02
CPC分类号： G01R31/088 , G01R31/085 , H02H7/263 , Y02E60/728 , Y04S10/265
摘要： A set of current measurements may be transmitted from a remote Intelligent Electronic Device (IED) to a local IED. The current measurements may comprise a timestamp and/or be associated with timestamp information to allow the local IED to time align the local current measurement with the remote current measurement. The local IED may detect a fault within the power system segment defined by the local and remote IEDs by comparing an operating current to a scaled restraint current. A fault may also be detected by comparing the operating current to a scaled nominal current. The operating and restraint currents may be derived from the local and remote current measurements. The restraint current scale may be derived from the characteristics of the local and/or remote IED. The current measurements may correspond to a negative-sequence component and/or a zero-sequence component of a three-phase current measurement set.
摘要翻译：一组当前测量可以从远程智能电子设备（IED）传输到本地IED。当前测量可以包括时间戳和/或与时间戳信息相关联，以允许本地IED将局部电流测量与远程电流测量进行时间对准。本地IED可以通过将工作电流与缩放的约束电流进行比较来检测由本地和远程IED定义的电力系统段内的故障。也可以通过将工作电流与缩放的额定电流进行比较来检测故障。操作和约束电流可以从本地和远程电流测量中得出。约束电流刻度可以从本地和/或远程IED的特性导出。电流测量可对应于三相电流测量集合的负序分量和/或零序分量。

32. 发明申请

US20110264388A1 FAULT LOCATION IN ELECTRIC POWER DELIVERY SYSTEMS 有权
标题翻译：电力输送系统中的故障位置
公开(公告)号：US20110264388A1
公开(公告)日：2011-10-27
申请号：US12764342
申请日：2010-04-21
申请人： Yanfeng Gong , Armando Guzman-Casillas
发明人： Yanfeng Gong , Armando Guzman-Casillas
IPC分类号： G01R31/42
CPC分类号： G01R31/086 , G01R31/088 , Y04S10/522
摘要： Accurately calculating location of a fault even on a branched, non-homogenous, radial electric power distribution system. The calculation includes determining a calculated reactance or impedance to the fault, and uses the line parameters to determine locations on the system that match the calculated reactance to the fault. The calculation may further include a determination of faulted phase and eliminate fault location possibilities based on absence of the faulted phase at those locations. The calculation may further use data reported from line monitors such as faulted circuit indicators (FCIs).
摘要翻译：即使在分支的，非均匀的径向配电系统上，也能准确计算故障位置。该计算包括确定对故障的计算电抗或阻抗，并使用线路参数来确定与计算出的故障电抗匹配的系统上的位置。该计算还可以包括确定故障相位并且基于在那些位置处的故障相位的不存在来消除故障定位可能性。该计算还可以使用从线路监视器报告的数据，例如故障电路指示器（FCI）。

33. 发明申请

US20100264749A1 DIFFERENTIAL ELEMENT WITH HARMONIC BLOCKING AND HARMONIC RESTRAINT OPERATING IN PARALLEL 有权
标题翻译：具有谐波阻塞和谐波约束并联运算的差分元件
公开(公告)号：US20100264749A1
公开(公告)日：2010-10-21
申请号：US12424705
申请日：2009-04-16
申请人： Armando Guzman-Casillas , Normann Fischer
发明人： Armando Guzman-Casillas , Normann Fischer
IPC分类号： H02J1/02 , H03H7/01
CPC分类号： H02J3/01 , H02M1/12 , Y02E40/40
摘要： An intelligent electronic device (IED) provides harmonic blocking and harmonic restraint differential protection operating in parallel. The IED includes a harmonically-blocked differential element supervised by one or more even harmonics of a raw operating current (a current comprising the fundamental operating current and the harmonics thereof). The IED also includes a parallel, harmonically-restrained differential element, which is restrained by harmonics of the raw operating current. Tripping signals output by the parallel harmonically-blocked differential element and the harmonically-restrained differential element may be selectively combined into a single tripping signal output. An additional harmonic blocking element may supervise both differential elements and/or the combined tripping signal. The additional harmonic blocking element may provide odd-harmonic blocking, such as harmonic blocking based on a fifth harmonic of the raw operating current.
摘要翻译：智能电子设备（IED）提供并联运行的谐波阻塞和谐波抑制差动保护。 IED包括由原始工作电流（包括基波工作电流及其谐波的电流）的一个或多个偶次谐波监控的谐波阻塞的差分元件。 IED还包括一个并联的，谐波抑制的差分元件，其受原始工作电流的谐波的约束。由并联谐波阻塞的差分元件和谐波抑制的差分元件输出的跳闸信号可以选择性地组合成单个跳闸信号输出。附加谐波阻塞元件可以监控差分元件和/或组合跳闸信号。附加谐波阻塞元件可以提供奇次谐波阻塞，例如基于原始工作电流的五次谐波的谐波阻塞。

34. 发明申请

US20070086134A1 Apparatus and method for estimating synchronized phasors at predetermined times referenced to an absolute time standard in an electrical system 有权
标题翻译：在电气系统中参考绝对时间标准的预定时间估计同步相量的装置和方法
公开(公告)号：US20070086134A1
公开(公告)日：2007-04-19
申请号：US11504788
申请日：2006-08-15
申请人： Gregary Zweigle , Luther Anderson , Armando Guzman-Casillas
发明人： Gregary Zweigle , Luther Anderson , Armando Guzman-Casillas
IPC分类号： H02H3/00
CPC分类号： G01R19/2513 , Y02E60/728 , Y04S10/265
摘要： An apparatus and method estimates a plurality of synchronized phasors at predetermined times referenced to an absolute time standard in an electrical power system. The method includes acquiring and determining a frequency of a power system signal, sampling the power system signal at a sampling interval rate based on a frequency of the power system signal to form signal samples, and generating a plurality of acquisition time values based on an occurrence of each of the signal samples at a corresponding plurality of different times referenced to the absolute time standard. The method further includes adjusting a phasor of each of the signal samples based on a time difference between a corresponding selected acquisition time value and a predetermined time referenced to an absolute time standard to form the plurality of synchronized phasors.
摘要翻译：装置和方法以参考电力系统中的绝对时间标准的预定时间估计多个同步相量。该方法包括获取和确定电力系统信号的频率，基于电力系统信号的频率以采样间隔速率对功率系统信号进行采样以形成信号采样，以及基于发生时产生多个采集时间值以相对于绝对时间标准的相应多个不同时间的每个信号样本。该方法还包括基于相应的所选采集时间值和参考绝对时间标准的预定时间之间的时间差来调整每个信号样本的相量，以形成多个同步相量。

35. 发明授权

US5731943A Protective relay having out-of-step logic capability 失效
标题翻译：具有超出逻辑能力的保护继电器
公开(公告)号：US5731943A
公开(公告)日：1998-03-24
申请号：US582770
申请日：1996-01-04
申请人： Jeffrey B. Roberts , Daqing Hou , Armando Guzman-Casillas
发明人： Jeffrey B. Roberts , Daqing Hou , Armando Guzman-Casillas
IPC分类号： H02H1/04 , H02H3/40 , H02H3/44 , H02H3/18
CPC分类号： H02H3/402 , H02H1/04 , H02H3/44
摘要： An out-of-step blocking circuit is established with two additional zones in the impedance plane, with the circuit determining the time that the positive sequence impedance takes to move between the two zones. The distance elements for selected zones of protection for the relay are blocked if the impedance moves between the two zones at a rate less than a first threshold. However, a trip signal results if the rate of change is greater than the first threshold but less than a second threshold, indicating an unstable swing. Further, an inner blinder zone is established in the impedance plane within the additional two zones of protection. If the positive sequence impedance entering that zone does not move from that zone within a certain time during an otherwise out-of-step condition, the blocking signals are terminated.
摘要翻译：在阻抗平面中建立了两个附加区域的失步阻塞电路，电路确定正序阻抗在两个区域之间移动的时间。如果阻抗以小于第一阈值的速率在两个区域之间移动，则继电器的所选保护区域的距离元件将被阻止。然而，如果变化率大于第一阈值但小于第二阈值，则表示不稳定的摆动，则产生跳闸信号。此外，在额外的两个保护区内的阻抗平面内建立内部阻挡区。如果进入该区域的正序阻抗在另外的不合格条件下在一定时间内不会从该区域移动，则阻塞信号被终止。

36. 发明授权

US08942954B2 Fault location in a non-homogeneous electric power line 有权
标题翻译：非均匀电力线故障定位
公开(公告)号：US08942954B2
公开(公告)日：2015-01-27
申请号：US12883944
申请日：2010-09-16
申请人： Yanfeng Gong , Armando Guzman-Casillas , Mangapathirao Venkata Mynam , Richard M. Edge
发明人： Yanfeng Gong , Armando Guzman-Casillas , Mangapathirao Venkata Mynam , Richard M. Edge
IPC分类号： G21C17/00 , G01R31/08 , H02H7/26
CPC分类号： G01R31/085 , G01R31/088 , H02H7/261
摘要： Fault location on a non-homogeneous electric power line that includes a plurality of sections by determining a section in which negative-sequence voltage magnitude profiles calculated from each terminal of the power line intersect. The fault location may determine the faulted section and determine the location of the fault within the faulted section. To determine the fault location, the negative-sequence voltage magnitude profiles may be calculated from measurements taken at each terminal of the power line and compared to determine a point where the profiles intersect. The profiles may be calculated using power line properties and measurements from each terminal.
摘要翻译：通过确定从电力线的每个端子计算的负序电压幅度曲线相交的部分，包括多个部分的非均匀电力线上的故障位置。故障位置可以确定故障部分，并确定故障部分内故障的位置。为了确定故障位置，可以根据在电力线的每个端子处进行的测量来计算负序电压幅度分布，并进行比较以确定轮廓相交的点。可以使用来自每个终端的电力线属性和测量来计算轮廓。

37. 发明申请

US20110264389A1 Fault Location in Electric Power Delivery Systems 有权
标题翻译：电力输送系统故障定位
公开(公告)号：US20110264389A1
公开(公告)日：2011-10-27
申请号：US13154700
申请日：2011-06-07
申请人： Mangapathirao Venkata Mynam , Yanfeng Gong , Armando Guzman-Casillas
发明人： Mangapathirao Venkata Mynam , Yanfeng Gong , Armando Guzman-Casillas
IPC分类号： G06F19/00
CPC分类号： G01R31/086 , Y04S10/522
摘要： Accurately calculating location of a phase-to-phase fault even on a branched, non-homogenous, radial electric power distribution system. The calculation includes determining a calculated reactance to the fault without using positive-sequence current measurements, and uses the line parameters to determine locations on the system that match the calculated reactance to the fault. The calculation may further include a determination of faulted phase and eliminate fault location possibilities based on absence of the faulted phase at those locations.
摘要翻译：即使在分支式，非均匀的径向配电系统上，也能准确地计算出相间故障的位置。该计算包括在不使用正序电流测量的情况下确定对故障的计算电抗，并使用线路参数来确定系统上与故障的计算电抗匹配的位置。该计算还可以包括确定故障相位并且基于在那些位置处的故障相位的不存在来消除故障定位可能性。

38. 发明授权

US08031447B2 Transformer through-fault current monitor 有权
标题翻译：变压器通过故障电流监视器
公开(公告)号：US08031447B2
公开(公告)日：2011-10-04
申请号：US12247911
申请日：2008-10-08
申请人： Armando Guzman-Casillas , Normann Fischer
发明人： Armando Guzman-Casillas , Normann Fischer
IPC分类号： H02H7/04 , H02H3/08 , H02H9/02
CPC分类号： H02H7/045 , G01R19/0092 , G01R22/10 , G01R31/088
摘要： A device is provided for monitoring through-fault current in an electric transformer on an electrical power system. The device generally includes a magnitude calculator for calculating the magnitude of current (e.g., a root means square value of current or magnitude of a fundamental of current) based on the current through the electric transformer. A through-fault energy calculator is further provided which is coupled to the magnitude calculator for calculating a through-fault energy value based on the magnitude of current or the calculated current through the transformer. An accumulator is coupled to the through-fault energy calculator for accumulating a plurality of through-fault energy values, and an alarm coupled to the accumulator for indicating that the accumulated through-fault energy values exceed a selected threshold.
摘要翻译：提供一种用于监测电力系统中的电力变压器中的故障电流的装置。该装置通常包括用于基于通过电变压器的电流来计算电流的大小（例如，根指电流的电流的平方值或电流的基波的大小）的幅度计算器。还提供一个通过故障的能量计算器，其连接到幅度计算器，用于基于电流的大小或通过变压器的计算电流来计算贯穿故障能量值。累加器耦合到通过故障能量计算器以累积多个通过故障的能量值，以及耦合到累加器的用于指示累积的通过故障能量值超过所选择的阈值的警报。

39. 发明授权

US07987059B2 Real-time power system oscillation detection using modal analysis 有权
标题翻译：使用模态分析实时电力系统振荡检测
公开(公告)号：US07987059B2
公开(公告)日：2011-07-26
申请号：US12247746
申请日：2008-10-08
申请人： Yanfeng Gong , Armando Guzman-Casillas
发明人： Yanfeng Gong , Armando Guzman-Casillas
IPC分类号： H02J3/24 , H02J3/00 , G06F19/00 , G06F17/40
CPC分类号： H02J3/24 , G01R19/2513 , Y02E60/728 , Y04S10/265
摘要： A power system oscillation detection device is provided for use in an electric power system. A plurality of sample signals are acquired from the electrical power system via a plurality of intelligent electronic devices (IEDs) in communication with the power system. The power system oscillation detection device includes a real-time modal analysis module, a real-time mode identification module, and real-time decision and control logic. The real-time modal analysis module calculates modes of at least one of the signals, each mode including mode information. The real-time mode identification module together with the real-time decision and control logic determines, from the mode information, whether there is an undesirable oscillation in the electric power system and activates a remedial action.
摘要翻译：提供一种用于电力系统的电力系统振荡检测装置。通过与电力系统通信的多个智能电子设备（IED）从电力系统获取多个采样信号。电力系统振荡检测装置包括实时模态分析模块，实时模式识别模块和实时决策与控制逻辑。实时模态分析模块计算至少一个信号的模式，每个模式包括模式信息。实时模式识别模块与实时决策和控制逻辑一起根据模式信息确定电力系统中是否存在不期望的振荡并且启动补救动作。

40. 发明申请

US20100286838A1 ISLANDING DETECTION IN AN ELECTRICAL POWER DELIVERY SYSTEM 有权
标题翻译：电力输送系统中的岛屿检测
公开(公告)号：US20100286838A1
公开(公告)日：2010-11-11
申请号：US12777128
申请日：2010-05-10
申请人： Armando Guzman-Casillas , Mangapathirao Venkat Mynam , Marcos A. Donolo
发明人： Armando Guzman-Casillas , Mangapathirao Venkat Mynam , Marcos A. Donolo
IPC分类号： G06F1/28 , G01R21/00 , G06F19/00 , G01R31/00
CPC分类号： G01R19/2513 , H02J2003/388
摘要： An intelligent electronic device is operable to use a signal derived from an electrical power delivery system to effectively detect an islanding condition. The intelligent electronic device is configured to compare a frequency deviation (from nominal frequency) and a rate-of-change of frequency of the electrical power delivery system to a protection characteristic of the intelligent electronic device to quickly and securely detect islanding conditions thereby enhancing power protection, automation, control, and monitoring performance. The intelligent electronic device uses local measurements of the electrical power deliver system to provide reliable and economical means to properly separate a generation site from the remainder of the electrical power delivery system. Such may be useful to prevent reclosing out of synchronism.
摘要翻译：智能电子设备可操作地使用从电力输送系统导出的信号来有效地检测孤岛状态。智能电子设备被配置为将电力输送系统的频率的频率偏差（与标称频率）的频率变化率和智能电子设备的保护特性进行比较，以快速且可靠地检测孤岛状况从而增强功率保护，自动化，控制和监控性能。智能电子设备使用电力输送系统的本地测量来提供可靠和经济的手段来将发电站点与电力输送系统的其余部分正确分离。这可能有助于防止重新闭合脱离同步。

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