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1. 发明授权

US07567881B2 Self-adjusting voltage filtering technique compensating for dynamic errors of capacitive voltage transformers 有权
标题翻译：自适应电压滤波技术补偿电容式电压互感器的动态误差
公开(公告)号：US07567881B2
公开(公告)日：2009-07-28
申请号：US11694588
申请日：2007-03-30
申请人： Bogdan Z. Kasztenny , William James Premerlani , Iulian Raducanu
发明人： Bogdan Z. Kasztenny , William James Premerlani , Iulian Raducanu
IPC分类号： G01R35/00
CPC分类号： H03H17/04 , G01R15/16 , H03H2017/0477
摘要： A method of digitally correcting the raw output voltage from a Capacitive Voltage Transformer (CVT) with the intent to remove transient components impacting on transient accuracy of protection function. A typical CVT is represented using three parameters in the linear CVT model. A digital filter designed based on the three parameters and incorporating a dedicated mechanism to ensure numerical stability of the former. A method of self-adjusting the said filter based on system events and performed after the method has been deployed in the field and supplied from a specific CVT.
摘要翻译：一种从电容式电压互感器（CVT）数字校正原始输出电压的方法，旨在消除影响保护功能的瞬态精度的瞬态分量。典型的CVT用线性CVT模型中的三个参数表示。基于三个参数设计的数字滤波器，并结合了专门的机构来确保前者的数值稳定性。一种基于系统事件自动调整所述过滤器的方法，并且在所述方法已被部署在现场并从特定CVT提供之后执行。

2. 发明授权

US08675327B2 Fast impedance protection technique immune to dynamic errors of capacitive voltage transformers 有权
标题翻译：快速阻抗保护技术免于电容式电压互感器的动态误差
公开(公告)号：US08675327B2
公开(公告)日：2014-03-18
申请号：US11694420
申请日：2007-03-30
申请人： Bogdan Z. Kasztenny , Dale S. Finney , Iulian Raducanu
发明人： Bogdan Z. Kasztenny , Dale S. Finney , Iulian Raducanu
IPC分类号： H02H3/38
CPC分类号： H02H3/402
摘要： The present invention relates to methods for providing impedance protection differentiating between in-zone and out-of-zone faults based on instantaneous, digitally derived operating and polarizing distance comparator signals. The method uses a pair of fast orthogonal filters to derive D and Q components of the input voltages and currents. Two sets of operating and polarizing signals are derived for better speed of response under varying fault moment with respect to the peaks and zero crossings of power signals. Three stages of comparison between the operating and polarizing impedance terms are used. These comparator stages use half a cycle averaging windows, and three-quarters-of-a-cycle windows. The first stage of comparison is based on energy comparator responding to both magnitude and phase information in the signals. Stages 2 and 3 are of phase comparison type, responding mostly at the phase information and neglecting the magnitude information for better immunity to noise and signal distortions.
摘要翻译：本发明涉及提供阻抗保护的方法，其基于瞬时的，数字导出的操作和偏振距离比较器信号来区分区域内和区域外故障。该方法使用一对快速正交滤波器来导出输入电压和电流的D和Q分量。导出两组操作和极化信号，以在相对于功率信号的峰值和过零点的变化故障时刻获得更好的响应速度。使用操作和极化阻抗项之间的三个比较阶段。这些比较器级使用半周期平均窗口和四分之三的四周窗口。比较的第一阶段是基于能量比较器来响应信号中的幅度和相位信息。阶段2和3是相位比较类型，主要响应于相位信息，并且忽略幅度信息以更好地抵抗噪声和信号失真。

3. 发明申请

US20080239602A1 FAST IMPEDANCE PROTECTION TECHNIQUE IMMUNE TO DYNAMIC ERRORS OF CAPACITIVE VOLTAGE TRANSFORMERS 有权
标题翻译：快速阻抗保护技术免受电容式电压互感器的动态误差
公开(公告)号：US20080239602A1
公开(公告)日：2008-10-02
申请号：US11694420
申请日：2007-03-30
申请人： Bogdan Z. Kasztenny , Dale S. Finney , Iulian Raducanu
发明人： Bogdan Z. Kasztenny , Dale S. Finney , Iulian Raducanu
IPC分类号： H02H3/16
CPC分类号： H02H3/402
摘要： The present invention relates to methods for providing impedance protection differentiating between in-zone and out-of-zone faults based on instantaneous, digitally derived operating and polarizing, distance comparator signals. The method uses a pair of fast orthogonal filters to derive D and Q components of the input voltages and currents. Two sets of operating and polarizing signals are derived for better speed of response under varying fault moment with respect to the peaks and zero crossings of power signals. Three stages of comparison between the operating and polarizing impedance terms are used. These comparator stages use half a cycle averaging windows, and three-quarters-of-a-cycle windows. The first stage of comparison is based on energy comparator responding to both magnitude and phase information in the signals. Stages 2 and 3 are of phase comparison type, responding mostly at the phase information and neglecting the magnitude information for better immunity to noise and signal distortions.
摘要翻译：本发明涉及提供阻抗保护的方法，其基于瞬时的，数字导出的操作和极化距离比较器信号来区分区域内和区域外故障。该方法使用一对快速正交滤波器来导出输入电压和电流的D和Q分量。导出两组操作和极化信号，以在相对于功率信号的峰值和过零点的变化故障时刻获得更好的响应速度。使用操作和极化阻抗项之间的三个比较阶段。这些比较器级使用半周期平均窗口和四分之三的四周窗口。比较的第一阶段是基于能量比较器来响应信号中的幅度和相位信息。阶段2和3是相位比较类型，主要响应于相位信息，并且忽略幅度信息以更好地抵抗噪声和信号失真。

4. 发明申请

US20080243413A1 SELF-ADJUSTING VOLTAGE FILTERING TECHNIQUE COMPENSATING FOR DYNAMIC ERRORS OF CAPACITIVE VOLTAGE TRANSFORMERS 有权
标题翻译：自适应电压滤波技术补偿电容式变压器动态误差
公开(公告)号：US20080243413A1
公开(公告)日：2008-10-02
申请号：US11694588
申请日：2007-03-30
申请人： Bogdan Z. Kasztenny , William J. Premerlani , Iulian Raducanu
发明人： Bogdan Z. Kasztenny , William J. Premerlani , Iulian Raducanu
IPC分类号： G01R15/18 , G01R35/00
CPC分类号： H03H17/04 , G01R15/16 , H03H2017/0477
摘要： A method of digitally correcting the raw output voltage from a Capacitive Voltage Transformer (CVT) with the intent to remove transient components impacting on transient accuracy of protection function. A typical CVT is represented using three parameters in the linear CVT model. A digital filter designed based on the three parameters and incorporating a dedicated mechanism to ensure numerical stability of the former. A method of self-adjusting the said filter based on system events and performed after the method has been deployed in the field and supplied from a specific CVT.
摘要翻译：一种从电容式电压互感器（CVT）数字校正原始输出电压的方法，旨在消除影响保护功能的瞬态精度的瞬态分量。典型的CVT用线性CVT模型中的三个参数表示。基于三个参数设计的数字滤波器，并结合了专门的机构来确保前者的数值稳定性。一种基于系统事件自动调整所述过滤器的方法，并且在所述方法已被部署在现场并从特定CVT提供之后执行。

5. 发明申请

US20100194323A1 ROBUST ON LINE STATOR TURN FAULT IDENTIFICATION SYSTEM 有权
标题翻译：稳定的在线定时器故障识别系统
公开(公告)号：US20100194323A1
公开(公告)日：2010-08-05
申请号：US12365114
申请日：2009-02-03
申请人： William James Premerlani , Somakumar R. , Arvind Kumar Tiwari , Bhaskar Sen , Bogdan Z. Kasztenny , Arijit Banerjee
发明人： William James Premerlani , Somakumar R. , Arvind Kumar Tiwari , Bhaskar Sen , Bogdan Z. Kasztenny , Arijit Banerjee
IPC分类号： H02H7/08
CPC分类号： G01R31/343
摘要： A system and method for identifying turn faults in a stator of a motor are provided. The method includes determining a normalized cross-coupled impedance from the symmetrical components of measured voltages and currents of the motor. Additionally, the normalized cross-coupled impedance may be normalized to a negative sequence impedance. The negative sequence impedance may be determined through a regression analysis using parameters of the motor, such as line-to-line voltage, horsepower, and number of poles. A system is provided that includes a device having a memory and processor configured to determine a normalized cross-coupled impedance, compare the normalized cross-coupled impedance to one or more thresholds, and trigger and alarm and/or trip the motor.
摘要翻译：提供了一种用于识别电动机定子中的匝故障的系统和方法。该方法包括根据测量的电压和电流的电流的对称分量来确定归一化的交叉耦合阻抗。此外，标准化的交叉耦合阻抗可以归一化为负序阻抗。负序阻抗可以通过使用马达参数的回归分析来确定，例如线对线电压，马力和极数。提供了一种系统，其包括具有存储器和处理器的设备，其被配置为确定归一化的交叉耦合阻抗，将标准化的交叉耦合阻抗与一个或多个阈值进行比较，并触发和报警和/或跳闸电动机。

6. 发明授权

US08135551B2 Robust on line stator turn fault identification system 有权
标题翻译：稳定的在线定子转向故障识别系统
公开(公告)号：US08135551B2
公开(公告)日：2012-03-13
申请号：US12365114
申请日：2009-02-03
申请人： Arvind Kumar Tiwari , William James Premerlani , Somakumar Ramachandrapanicker , Bhaskar Sen , Bogdan Z. Kasztenny , Arijit Banerjee
发明人： Arvind Kumar Tiwari , William James Premerlani , Somakumar Ramachandrapanicker , Bhaskar Sen , Bogdan Z. Kasztenny , Arijit Banerjee
IPC分类号： G01R31/00
CPC分类号： G01R31/343
摘要： A system and method for identifying turn faults in a stator of a motor are provided. The method includes determining a normalized cross-coupled impedance from the symmetrical components of measured voltages and currents of the motor. Additionally, the normalized cross-coupled impedance may be normalized to a negative sequence impedance. The negative sequence impedance may be determined through a regression analysis using parameters of the motor, such as line-to-line voltage, horsepower, and number of poles. A system is provided that includes a device having a memory and processor configured to determine a normalized cross-coupled impedance, compare the normalized cross-coupled impedance to one or more thresholds, and trigger and alarm and/or trip the motor.
摘要翻译：提供了一种用于识别电动机定子中的匝故障的系统和方法。该方法包括根据测量的电压和电流的电流的对称分量来确定归一化的交叉耦合阻抗。此外，标准化的交叉耦合阻抗可以归一化为负序阻抗。负序阻抗可以通过使用马达参数的回归分析来确定，例如线对线电压，马力和极数。提供了一种系统，其包括具有存储器和处理器的设备，其被配置为确定归一化的交叉耦合阻抗，将标准化的交叉耦合阻抗与一个或多个阈值进行比较，并触发和报警和/或跳闸电动机。

7. 发明申请

US20110063761A1 Transformer Differential Protection 有权
标题翻译：变压器差动保护
公开(公告)号：US20110063761A1
公开(公告)日：2011-03-17
申请号：US12561962
申请日：2009-09-17
申请人： Bogdan Z. Kasztenny , Normann Fischer
发明人： Bogdan Z. Kasztenny , Normann Fischer
IPC分类号： H02H7/04
CPC分类号： H02H7/045
摘要： Transformer differential protection is provided by measuring a plurality of currents corresponding to a first set of windings and a second set of windings of a transformer, and compensating the currents based on their respective flows through either the first set of windings or the second set of windings. The compensated currents may be intentionally augmented to compensate for magnetizing inrush and/or stationary overexcitation conditions associated with the transformer. Augmentation based on stationary overexcitation, for example, may be based on either harmonic restraint or an addition of a V/Hz ratio to a restraining signal. A complex current ratio is calculated corresponding to the plurality of compensated currents. The complex current ratio may be based on a two-terminal equivalent power apparatus. Then, an alpha plane analysis is applied to the complex current ratio. Based on the alpha plane analysis, a power apparatus that includes the transformer is selectively tripped.
摘要翻译：通过测量对应于变压器的第一组绕组和第二组绕组的多个电流来提供变压器差动保护，并且基于通过第一组绕组或第二组绕组的相应流量来补偿电流。可以有意地增加补偿电流以补偿与变压器相关联的磁化浪涌和/或稳定的过激励条件。例如，基于静止过激励的增强可以基于谐波抑制或者与限制信号相加的V / Hz比。对应于多个补偿电流计算复电流比。复电流比可以基于两端等效电力装置。然后，将α平面分析应用于复电流比。基于α平面分析，包括变压器的电力设备被选择性跳闸。

8. 发明申请

US20100194324A1 STATOR TURN FAULT DETECTION APPARATUS AND METHOD FOR INDUCTION MACHINE 有权
标题翻译：定子转向故障检测装置和感应电机的方法
公开(公告)号：US20100194324A1
公开(公告)日：2010-08-05
申请号：US12365118
申请日：2009-02-03
申请人： Bogdan Z. Kasztenny , Somakumar R. , Arvind Kumar Tiwari , Arijit Banerjee
发明人： Bogdan Z. Kasztenny , Somakumar R. , Arvind Kumar Tiwari , Arijit Banerjee
IPC分类号： H02H7/08
CPC分类号： G01R31/34 , G01R31/025 , G01R31/346
摘要： A system and method are provided for correction of parameters used in determination of stator turn faults of an induction motor. An embodiment may include determining a residual impedance and/or a residual voltage of the motor, and correcting a normalized cross-coupled impedance based on the residual impedance and residual voltage. Additional embodiments may include measuring an operating temperature of the motor and determining a negative sequence impedance of the motor based on the temperature. Another embodiment may include measuring voltages and currents of the motor and determining phasors for the voltages and currents using compensation for variations from a nominal frequency of the motor.
摘要翻译：提供了用于校正用于确定感应电动机的定子匝故障的参数的系统和方法。实施例可以包括确定电动机的残余阻抗和/或剩余电压，以及基于残余阻抗和残余电压校正归一化的交叉耦合阻抗。另外的实施例可以包括测量电动机的工作温度并基于温度确定电动机的负序阻抗。另一个实施例可以包括测量电动机的电压和电流，并且使用对来自电动机的额定频率的变化的补偿来确定电压和电流的相量。

9. 发明授权

US07472026B2 Multi-ended fault location system 有权
标题翻译：多端故障定位系统
公开(公告)号：US07472026B2
公开(公告)日：2008-12-30
申请号：US11615103
申请日：2006-12-22
申请人： William J. Premerlani , Bogdan Z. Kasztenny , Mark G. Adamiak
发明人： William J. Premerlani , Bogdan Z. Kasztenny , Mark G. Adamiak
IPC分类号： G06F19/00 , G01R31/00
CPC分类号： G01R31/086 , G01R27/18 , Y02E60/728 , Y04S10/265 , Y04S10/522
摘要： A system and method for locating faults on multi-terminal power system transmission lines uses synchronized phasor measurements to accurately determine fault location and fault impedance regardless of fault type, fault resistance, and coupling to other adjacent power system transmission lines.
摘要翻译：用于定位多终端电力系统传输线路故障的系统和方法使用同步相量测量来精确地确定故障位置和故障阻抗，而不管故障类型，故障电阻以及与其他相邻电力系统传输线的耦合。

10. 发明申请

US20120162843A1 LINE CURRENT DIFFERENTIAL PROTECTION UPON LOSS OF AN EXTERNAL TIME REFERENCE 有权
标题翻译：对外部时间参考的损失进行线路电流差分保护
公开(公告)号：US20120162843A1
公开(公告)日：2012-06-28
申请号：US13411780
申请日：2012-03-05
申请人： Bogdan Z. Kasztenny , Normann Fischer , Luther S. Anderson
发明人： Bogdan Z. Kasztenny , Normann Fischer , Luther S. Anderson
IPC分类号： H02H9/02
CPC分类号： H02H3/30 , H02H1/0061 , H04J3/0667
摘要： A line current differential protection system that uses an external time reference continues providing protection to a power apparatus upon the loss of the external time reference. An external time reference synchronization mode and a channel based synchronization mode may be selectively applied on a per channel basis such that only those channels in the system that are not guaranteed to stay symmetrical use external time reference synchronization. When the external time reference is lost, fallback strategies may be used such as disabling or de-sensitizing the line current differential protection function, switching from the external time reference synchronization mode to a channel based synchronization mode with appropriately selected protection settings, and/or marking the channel as unavailable to isolate the system from the consequences of synchronization errors over this channel and instead using a master-slave mode with other available channels to continue providing line protection with the current differential system.
摘要翻译：使用外部时间基准的线路电流差动保护系统在损失外部时间基准时继续为电力设备提供保护。可以在每个通道的基础上选择性地应用外部时间基准同步模式和基于信道的同步模式，使得只有系统中不能保持对称的那些通道使用外部时间基准同步。当外部时间基准丢失时，可以使用回退策略，诸如禁用或去敏感线路电流差动保护功能，从外部时间基准同步模式切换到具有适当选择的保护设置的基于频道的同步模式，和/或将通道标记为不可用，以将系统与该通道的同步错误的后果隔离开来，而不是使用具有其他可用通道的主从模式继续使用当前差分系统提供线路保护。

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