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1. 发明申请

WO2021178104A1 ELECTRIC POWER SYSTEM VOLTAGE MONITORING AND CONTROL WITH ENERGY PACKETS 审中-公开
公开(公告)号：WO2021178104A1
公开(公告)日：2021-09-10
申请号：PCT/US2021/016794
申请日：2021-02-05
申请人： SCHWEITZER ENGINEERING LABORATORIES, INC.
发明人： SCHWEITZER, III, Edmund O. , ZWEIGLE, Gregary C. , BLOOD, Ellery A.
IPC分类号： G01R21/00 , G01D4/00 , G06Q50/06 , H02J3/00
摘要： Electric power system voltage control and voltage stability may be calculated using energy packets. Sets of negative energy packet sets normalized by a set of positive and negative energy packet sets may be used for voltage control by adding or removing capacitive units. Energy packet voltage indicators may be calculated using energy packets, and used to determine voltage stability. Control actions may be taken depending on the determined voltage stability.

2. 发明申请

WO2021076323A1 RELIABLE POWER MODULE FOR IMPROVED SUBSTATION DEVICE AVAILABILITY 审中-公开
公开(公告)号：WO2021076323A1
公开(公告)日：2021-04-22
申请号：PCT/US2020/053356
申请日：2020-09-30
申请人： SCHWEITZER ENGINEERING LABORATORIES, INC.
发明人： SCHWEITZER, III, Edmund O. , WHITEHEAD, David E. , LEE, Tony J. , CASEBOLT, David J. , GUBBA RAVIKUMAR, Krishnanjan , WADE, Austin Edward , HALL, Bruce A. , LOUGHLIN, Kelsey M. , ROBERTSON, Sean D.
IPC分类号： H02J9/04 , H02H3/00 , H02J4/00 , H02J9/00
摘要： Disclosed herein are systems for maintaining protection of electric power delivery systems in the event of a control power failure or other anomaly. A reliable power module conditions electric power from multiple independent sources and provides electrical operational power to electric power delivery system protective loads. The reliable power module includes a power storage device for providing operational power even upon loss of all control power sources. The power storage may be sufficient to ride through expected losses such as a time to start up backup generation. The power storage may be sufficient to power a trip coil. Thus, electric power system protection is maintained even upon loss of control power.

3. 发明申请

WO2021076322A1 SYSTEMS, METHODS AND APPARATUSES FOR FREQUENCY TRACKING 审中-公开
公开(公告)号：WO2021076322A1
公开(公告)日：2021-04-22
申请号：PCT/US2020/053355
申请日：2020-09-30
申请人： SCHWEITZER ENGINEERING LABORATORIES, INC.
发明人： MANSON, Scott, M. , BLOOD, Ellery, A. , ZWEIGLE, Gregary, C.
IPC分类号： G01D5/34 , H02K11/25 , H02P29/024
摘要： A frequency tracking system may use shaft speed and electrical frequency to estimate a frequency of a monitored machine. The frequency tracking system may convert shaft speed to a mechanical frequency and blend the electrical frequency and the mechanical frequency together to determine an estimated frequency. The frequency tracking system may blend the frequencies based on an operating state of the monitored machine and the frequency sensors.

4. 发明申请

WO2019160650A1 POINT ON WAVE SWITCHING USING SLOW SPEED PROCESSING 审中-公开
公开(公告)号：WO2019160650A1
公开(公告)日：2019-08-22
申请号：PCT/US2019/014464
申请日：2019-01-22
申请人： SCHWEITZER ENGINEERING LABORATORIES, INC.
发明人： HAES, Dennis
IPC分类号： H02B13/035 , H01H11/00
摘要： An intelligent electronic device (IED) may provide point on wave switching. The IED may receive a control operation request, and determine when to issue a control command to cause a switch to change positions. The actuation of the switch may occur at a target point on an alternating current. An IED may have a processor that is too slow to implement a switch when a desired point on an alternating current first occurs. Accordingly, some embodiments may compensate for the processing speed of an IED by determining a number of processor cycles needed (in advance) to issue a control command so that the resulting action results in the desired point on wave open or close.

5. 发明申请

WO2019060765A1 HIGH-FIDELITY VOLTAGE MEASUREMENT USING A CAPACITANCE-COUPLED VOLTAGE TRANSFORMER 审中-公开
公开(公告)号：WO2019060765A1
公开(公告)日：2019-03-28
申请号：PCT/US2018/052275
申请日：2018-09-21
申请人： SCHWEITZER ENGINEERING LABORATORIES, INC.
发明人： SCHWEITZER, Edmund O., III , KASZTENNY, Bogdan Z. , SKENDZIC, Veselin
IPC分类号： G01R19/00 , G01R15/06
摘要： The present disclosure pertains to systems and methods for detecting traveling waves in electric power delivery systems. In one embodiment, a system comprises a capacitance-coupled voltage transformer (CCVT) in electrical communication with the electric power delivery system, the CCVT comprising a stack of capacitors and an electrical contact to a first ground connection. A current transformer is disposed between the stack of capacitors and the first ground connection. The current transformer provides an electrical signal corresponding to a current associated with the CCVT. An intelligent electronic device (IED) in electrical communication with the first current measurement device generates a voltage signal based on the electrical signal from the current transformer. The IED detects a traveling wave based on the first voltage signal; and analyzes the traveling wave to detect a fault on the electric power delivery system.

6. 发明申请

WO2019060712A1 DISTANCE PROTECTION USING TRAVELING WAVES IN AN ELECTRIC POWER DELIVERY SYSTEM 审中-公开
公开(公告)号：WO2019060712A1
公开(公告)日：2019-03-28
申请号：PCT/US2018/052204
申请日：2018-09-21
申请人： SCHWEITZER ENGINEERING LABORATORIES, INC.
发明人： SCHWEITZER, Edmund O., III , KASZTENNY, Bogdan Z.
IPC分类号： G01R31/08 , H02H7/30
摘要： The present disclosure pertains to systems and methods to detect faults in electric power delivery systems. In one embodiment, a data acquisition system may acquire a plurality of electric power delivery system signals from an electric power transmission line. A traveling wave system may detect a traveling wave based on the plurality of electric power delivery system signals received from the data acquisition system. The traveling wave may be analyzed using a first mode to determine a first mode arrival time and using a second mode to determine a second mode arrival time. A time difference between the first mode arrival time and the second mode arrival time may be determined. A fault location system may estimate or confirm a location of the fault based on the time difference. A protection action module may implement a protective action based on the location of the fault.

7. 发明申请

WO2019060706A3 SECURE TRAVELING WAVE DISTANCE PROTECTION IN AN ELECTRIC POWER DELIVERY SYSTEM 审中-公开
公开(公告)号：WO2019060706A3
公开(公告)日：2019-03-28
申请号：PCT/US2018/052196
申请日：2018-09-21
申请人： SCHWEITZER ENGINEERING LABORATORIES, INC.
发明人： SCHWEITZER, Edmund O., III , KASZTENNY, Bogdan Z.
IPC分类号： G01R31/28 , G01R31/08 , G05B9/02
摘要： The present disclosure pertains to systems and methods for monitoring traveling waves in an electric power system. In various embodiments, a data acquisition subsystem may acquire electric power system signals. A traveling wave detection subsystem may detect two or more traveling waves based on the electric power system signals and determine a location of an event triggering the traveling waves. A traveling wave security subsystem may selectively generate a restraining signal based on the location of the event as within a blocking zone. A protection action subsystem may implement a protective action when the location is outside of a blocking zone. In various embodiments, a protective action will not be implemented for traveling waves launched from known locations of switching devices operating normally. Further, protective actions may be restrained if a magnitude of a traveling wave differs from an expected value based on a pre-fault voltage.

8. 发明申请

WO2017218600A1 OVERCURRENT ELEMENT IN TIME DOMAIN 审中-公开
标题翻译：时域中的过流元素
公开(公告)号：WO2017218600A1
公开(公告)日：2017-12-21
申请号：PCT/US2017/037345
申请日：2017-06-13
申请人： SCHWEITZER ENGINEERING LABORATORIES, INC.
发明人： GUZMAN-CASILLAS, Armando , KASZTENNY, Bogdan , MYNAM, Venkata Mynam , FISCHER, Normann
IPC分类号： G01R19/00 , G01R21/00 , G01R31/02 , G01R31/08 , G01R31/28 , G05B9/02
CPC分类号： H02H3/02 , H02H1/0007 , H02H1/0084 , H02H3/30 , H02H7/26 , H02H7/263 , H02H7/265
摘要： The present disclosure pertains to systems and methods for supervising protective elements in electric power systems. In one embodiment, a system may be configured to selectively enable a protective action an electric power system. The system may include a data acquisition subsystem receive a plurality of representations of electrical conditions associated with at least a portion of the electric power delivery system. An incremental quantities module may calculate incremental quantities from the plurality of representations. A protective module may be configured to detect an event, to determine an incremental quantities value during the event, and to determine a time-varying threshold. The incremental quantities value during the event may be compared with the time-varying threshold, and a protective action module may be enabled to implement a protective action when the value of the incremental quantities value during the event exceeds the time-varying threshold.
摘要翻译：本公开涉及用于监督电力系统中的保护元件的系统和方法。在一个实施例中，系统可以被配置为选择性地启用电力系统的保护动作。该系统可以包括数据采集子系统，其接收与电力输送系统的至少一部分相关联的电条件的多个表示。增量模块可以从多个表示中计算增量。保护模块可以被配置为检测事件，确定事件期间的增量量值，并确定时变阈值。可以将事件期间的增量量值与时变阈值进行比较，并且当事件期间增量量值的值超过时变阈值时，可以启用保护动作模块以实施保护动作。 p>

9. 发明申请

WO2017039796A1 COMMUNICATION DEVICE FOR IMPLEMENTING SELECTIVE ENCRYPTION IN A SOFTWARE DEFINED NETWORK 审中-公开
标题翻译：在软件定义的网络中实现选择性加密的通信设备
公开(公告)号：WO2017039796A1
公开(公告)日：2017-03-09
申请号：PCT/US2016/039582
申请日：2016-06-27
申请人： SCHWEITZER ENGINEERING LABORATORIES, INC.
发明人： SMITH, Rhett , GRUSSLING, Barry Jakob
IPC分类号： H04L29/06
CPC分类号： H04L63/0471 , H04L45/38 , H04L45/42 , H04L45/64 , H04L63/06 , H04L63/162
摘要： The present disclosure pertains to systems and methods for selectively encrypting data flows within a software defined network (SDN). In one embodiment, a communication device may be configured to receive a plurality of unencrypted data packets. The communication device may receive from an SDN controller a criterion used to identify at least one of the unencrypted data flows to be encrypted. Based on the criterion, an encryption subsystem may generate an encrypted data flow the unencrypted data packets based on an encryption key. In some embodiments, the encryption system may parse the packets and encrypt the data payloads without encrypting the routing information associated with the packet. In other embodiments, the encryption subsystem may be configured to encapsulate and encrypt the entire unencrypted data packet. In some embodiments, the encryption subsystem may further be configured to authenticate a sending device and/or to verify the integrity of a message.
摘要翻译：本公开涉及用于选择性地加密软件定义网络（SDN）内的数据流的系统和方法。在一个实施例中，通信设备可以被配置为接收多个未加密的数据分组。通信设备可以从SDN控制器接收用于识别要加密的未加密数据流中的至少一个的标准。基于该标准，加密子系统可以基于加密密钥生成未加密数据分组的加密数据流。在一些实施例中，加密系统可以解析分组并加密数据有效载荷，而不加密与分组相关联的路由信息。在其他实施例中，加密子系统可以被配置为对整个未加密的数据分组进行封装和加密。在一些实施例中，加密子系统还可被配置为认证发送设备和/或验证消息的完整性。

10. 发明申请

WO2016118582A1 MULTILINGUAL POWER SYSTEM PROTECTION DEVICE 审中-公开
标题翻译：多电源系统保护装置
公开(公告)号：WO2016118582A1
公开(公告)日：2016-07-28
申请号：PCT/US2016/014059
申请日：2016-01-20
申请人： SCHWEITZER ENGINEERING LABORATORIES, INC.
发明人： D'AVERSA, Angelo , LEE, Man Lung , HOWELL, Matthew J. , STANLEY, Thomas Allen
IPC分类号： G06F3/00
CPC分类号： H02J13/001 , G10L15/22 , Y02E60/724 , Y04S10/18 , Y04S10/40
摘要： A multilingual power system protection device to facilitate communications in different human languages over different communication ports is described herein. In one embodiment, an electric power system device may include communication ports configured to receive inputs in different human languages and a monitored equipment interface in communication with a component of an electric power system. The electric power system device may receive an input on one of the communication ports and may associate the input with a function implemented by the component of the electric power system. The electric power system device may further generate a response in a pre-selected human language, and may transmit the response using the communication ports.
摘要翻译：本文描述了一种多语言电力系统保护装置，用于促进在不同通信端口上以不同人类语言进行通信。在一个实施例中，电力系统设备可以包括被配置为接收不同人类语言的输入的通信端口和与电力系统的部件通信的被监视的设备接口。电力系统装置可以在一个通信端口上接收输入，并且可以将输入与由电力系统的部件实现的功能相关联。电力系统设备还可以以预先选择的人类语言生成响应，并且可以使用通信端口发送响应。

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