公开(公告)号：US20210303016A1

公开(公告)日：2021-09-30

申请号：US16833955

申请日：2020-03-30

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Austin Edward Wade ,  Dennis Haes

IPC: G05F1/66 ,  G06F11/14 ,  H02H7/28 ,  H02H3/26

Abstract: Systems and methods to isolate faults and restore power are described herein. For example, an intelligent electronic device (IED) may receive a blocking signal indicating a fault is detected on a power line. The IED may obtain one or more current measurements of the power line. The IED may determine that a fault is not present on the power line at the IED based on the one or more current measurements. The IED may trip a first current interruption device of the IED The IED may send a close permissive signal to another IED indicating that the other IED is permitted to permitted to close an open current interruption device of the other IED to restore power to one or more loads.

公开(公告)号：US20190267797A1

公开(公告)日：2019-08-29

申请号：US16411494

申请日：2019-05-14

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Balasubramanian Sridharan ,  Kamal Garg ,  Dennis Haes ,  Hong Chun

IPC: H02H7/26 ,  G01R31/02 ,  G01R31/08 ,  G01R19/12 ,  H02H5/10

Abstract: A location of a broken electrical conductor of an electric power delivery system may be detected by monitoring a rate of change of phase voltage and/or a rate of change of zero-sequence voltage at various points on the conductor. Intelligent electronic devices (IEDs) such as phasor measurement units may be used to obtain measurements and calculate synchrophasors. The synchrophasors may be used by a central controller to determine which two continuous IEDs measure rates of change of voltages of opposite polarities, where the broken conductor is between the two continuous IEDs. The synchrophasors may be used by a central controller to determine which two continuous IEDs where one exhibits a zero-sequence voltage magnitude that exceeds a predetermined threshold for a predetermined time, wherein the zero-sequence voltage magnitude of the other of the continuous IEDs does not exceed the predetermined threshold.

公开(公告)号：US20160308349A1

公开(公告)日：2016-10-20

申请号：US15097036

申请日：2016-04-12

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： Balasubramanian Sridharan ,  Kamal Garg ,  Dennis Haes ,  Hong Chun

IPC: H02H7/26 ,  G01R19/12 ,  G01R31/08

CPC classification number: H02H7/26 ,  G01R19/12 ,  G01R31/021 ,  G01R31/026 ,  G01R31/083 ,  G01R31/085 ,  H02H5/10

Abstract: A location of a broken electrical conductor of an electric power delivery system may be detected by monitoring a rate of change of phase voltage and/or a rate of change of zero-sequence voltage at various points on the conductor. Intelligent electronic devices (IEDs) such as phasor measurement units may be used to obtain measurements and calculate synchrophasors. The synchrophasors may be used by a central controller to determine which two continuous IEDs measure rates of change of voltages of opposite polarities, where the broken conductor is between the two continuous IEDs. The synchrophasors may be used by a central controller to determine which two continuous IEDs where one exhibits a zero-sequence voltage magnitude that exceeds a predetermined threshold for a predetermined time, wherein the zero-sequence voltage magnitude of the other of the continuous IEDs does not exceed the predetermined threshold.

Abstract translation: 可以通过监测导体上各个点处的相电压变化率和/或零序电压变化率来检测电力输送系统断电导体的位置。 可以使用诸如相量测量单元的智能电子设备（IED）来获得测量并计算同步相容器。 中心控制器可以使用同步电极来确定哪两个连续IED测量相反极性的电压变化率，其中断开的导体在两个连续的IED之间。 中心控制器可以使用同步相位器来确定在预定时间内哪个两个连续IED呈现超过预定阈值的零序电压幅度的两个连续IED，其中连续IED中的另一个的零序电压幅度不 超过预定阈值。

公开(公告)号：US09257833B2

公开(公告)日：2016-02-09

申请号：US14225796

申请日：2014-03-26

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： William F. Allen ,  Dennis Haes ,  Bryan J. Fazzari

IPC: H02H3/20 ,  H02H9/04 ,  H02H7/20 ,  H02H1/00 ,  H02H7/26 ,  H02J13/00 ,  H02H3/08 ,  H02H9/02

CPC classification number: H02H7/20 ,  H02H1/0061 ,  H02H1/0092 ,  H02H7/261 ,  H02J13/0006 ,  Y02E60/724 ,  Y02E60/725 ,  Y02E60/74 ,  Y04S10/18 ,  Y04S10/20 ,  Y04S10/30 ,  Y10T307/469

Abstract: Disclosed are adaptive communication assisted protection and control. Local intelligent electronic devices (IEDs) associated with local switching devices and having unique IDs may transmit switch status and unique IDs to an area IED. The area IED may calculate topology using switch status, and provide control information to local IEDs using the topology. The area IED may communicate the unique ID of the local IED calculated to be immediately upstream of each local IED and, upon detection of a fault, the local IEDs may send blocking signals that include the received unique ID of the IED immediately upstream therefrom. The area IED may communicate control commands that include the unique IDs and control commands for the local IEDs to take the control action. Upon matching of the unique ID in the control command with its own unique ID, the local IEDs may take the control action and transmit remaining actions.

Abstract translation: 披露了自适应通信辅助保护和控制。 与本地交换设备相关联并具有唯一ID的本地智能电子设备（IED）可将交换机状态和唯一ID发送到区域IED。 区域IED可以使用开关状态计算拓扑结构，并使用拓扑结构向本地IED提供控制信息。 区域IED可以传达计算为紧邻每个本地IED上游的本地IED的唯一ID，并且在检测到故障时，本地IED可以在其上游发送包括接收到的IED唯一ID的阻塞信号。 区域IED可以传达包括本地IED的唯一ID和控制命令的控制命令以采取控制动作。 在控制命令中的唯一ID与其自己的唯一ID匹配时，本地IED可以采取控制动作并发送剩余动作。

公开(公告)号：US20140293494A1

公开(公告)日：2014-10-02

申请号：US14225796

申请日：2014-03-26

Applicant: Schweitzer Engineering Laboratories, Inc.

Inventor： William F. Allen ,  Dennis Haes ,  Bryan J. Fazzari

IPC: H02H7/20 ,  H02H1/00

CPC classification number: H02H7/20 ,  H02H1/0061 ,  H02H1/0092 ,  H02H7/261 ,  H02J13/0006 ,  Y02E60/724 ,  Y02E60/725 ,  Y02E60/74 ,  Y04S10/18 ,  Y04S10/20 ,  Y04S10/30 ,  Y10T307/469

Abstract: Disclosed are adaptive communication assisted protection and control. Local intelligent electronic devices (IEDs) associated with local switching devices and having unique IDs may transmit switch status and unique IDs to an area IED. The area IED may calculate topology using switch status, and provide control information to local IEDs using the topology. The area IED may communicate the unique ID of the local IED calculated to be immediately upstream of each local IED and, upon detection of a fault, the local IEDs may send blocking signals that include the received unique ID of the IED immediately upstream therefrom. The area IED may communicate control commands that include the unique IDs and control commands for the local IEDs to take the control action. Upon matching of the unique ID in the control command with its own unique ID, the local IEDs may take the control action and transmit remaining actions.

Abstract translation: 披露了自适应通信辅助保护和控制。 与本地交换设备相关联并具有唯一ID的本地智能电子设备（IED）可将交换机状态和唯一ID发送到区域IED。 区域IED可以使用开关状态计算拓扑结构，并使用拓扑结构向本地IED提供控制信息。 区域IED可以传达计算为紧邻每个本地IED上游的本地IED的唯一ID，并且在检测到故障时，本地IED可以在其上游发送包括接收到的IED唯一ID的阻塞信号。 区域IED可以传达包括本地IED的唯一ID和控制命令的控制命令以采取控制动作。 在控制命令中的唯一ID与其自己的唯一ID匹配时，本地IED可以采取控制动作并发送剩余动作。