公开(公告)号：US5367426A

公开(公告)日：1994-11-22

申请号：US960763

申请日：1992-10-14

申请人： Edmund O. Schweitzer, III

发明人： Edmund O. Schweitzer, III

IPC分类号： H02H7/26 ,  H02H3/26

CPC分类号： H02H7/26

摘要： Voltage and current on a power transmission line are first obtained, filtered and converted to digital representations. The positive sequence components of the voltage and current are determined and the impedance at the relay is then calculated from those positive sequence voltages and currents. The positive sequence impedance is converted into a magnitude and phase angle representation and then compared against a load pattern which is also represented by magnitude and phase angle representations. If the calculated impedance at the relay is within the load impedance pattern, the distance relay is prevented, i.e. blocked, from sending an output signal to trip a circuit breaker protecting the transmission line.

摘要翻译： 电力传输线上的电压和电流首先被获得，滤波并转换为数字表示。 确定电压和电流的正序分量，然后从那些正序电压和电流计算继电器的阻抗。 正序阻抗被转换为幅度和相位角表示，然后与也由幅度和相位角表示的负载模式进行比较。 如果在继电器处的计算阻抗在负载阻抗模式内，则距离继电器被阻止，即阻止发送输出信号以跳闸保护传输线路的断路器。

公开(公告)号：US5349490A

公开(公告)日：1994-09-20

申请号：US961260

申请日：1992-10-15

申请人： Jeffrey B. Roberts ,  Edmund O. Schweitzer, III

发明人： Jeffrey B. Roberts ,  Edmund O. Schweitzer, III

IPC分类号： H02H3/08 ,  H02H3/40 ,  H02H7/26 ,  H02H3/26

CPC分类号： H02H3/402 ,  H02H3/081 ,  H02H7/26

摘要： A directional element measures the negative sequence voltage and the negative sequence current and from those quantities produces a scalar quantity related to the negative sequence impedance of a power transmission line relative to the location of the directional element. The scalar quantity is then compared against two threshold quantity settings, one to determine a forward fault, the other to determine a reverse fault. The scalar quantity must be less than the forward threshold quantity for a forward fault and greater than the reverse threshold quantity for a reverse fault.

摘要翻译： 方向元件测量负序电压和负序电流，并且从那些量产生与电力传输线相对于方向元件的位置的负序阻抗相关的标量。 然后将标量与两个阈值设置进行比较，一个用于确定正向故障，另一个用于确定反向故障。 标量必须小于正向故障的正向阈值，大于反向故障的反向阈值。

公开(公告)号：US5208545A

公开(公告)日：1993-05-04

申请号：US676099

申请日：1991-03-27

申请人： Edmund O. Schweitzer, III

发明人： Edmund O. Schweitzer, III

IPC分类号： H02H1/00

CPC分类号： H02H1/0007

摘要： In one embodiment, the sampling order of voltage/current data channels from a power transmission line is controlled so that the average sampling instant for each channel is the same. In one example involving a six-channel system, the sampling order will alternate between 1,2,3,4,5,6 and 6,5,4,3,2,1. The sampled data is applied through a digital filter which averages the sampling instant for each channel. In another embodiment, low-pass filters are positioned on each channel, the low-pass filter introducing a predetermined delay for each channel which compensates for the sampling delay on each channel where the channels are sampled in a particular sequential order, i.e. 1,2,3,4 . . . n. The shortest delay will be present in the low-pass filter associated with the first channel, a slightly longer delay will be present in the low-pass filter associated with the second channel and so on through the nth channel.

摘要翻译： 在一个实施例中，控制来自电力传输线的电压/电流数据信道的采样顺序，使得每个通道的平均采样时刻相同。 在涉及六通道系统的一个示例中，采样顺序将在1,2,3,4,5,6和6,5,4,3,2,1之间交替。 采样数据通过数字滤波器进行施加，数字滤波器对每个通道的采样时刻进行平均。 在另一个实施例中，低通滤波器位于每个通道上，低通滤波器为每个通道引入预定的延迟，其补偿每个信道上的采样延迟，其中信道以特定的顺序进行采样，即1,2 ，3,4。 。 。 n。 最短的延迟将存在于与第一通道相关联的低通滤波器中，在与第二通道相关联的低通滤波器中存在略长的延迟，等等通过第n个通道。

公开(公告)号：US5160926A

公开(公告)日：1992-11-03

申请号：US682395

申请日：1991-04-04

申请人： Edmund O. Schweitzer, III

发明人： Edmund O. Schweitzer, III

IPC分类号： G01R31/08 ,  H02H3/04

CPC分类号： G01R31/08 ,  H02H3/04

摘要： A display transducer adapter for obtaining and displaying power system information from a protective relay. The information includes watt, voltage, current, reactive power, and fault location information. The information may be converted from a digitized format into analog signals and those signals may be provided as outputs, the functions of which are user selectable. The user may also selectively scale the outputs to cover a specified range.

摘要翻译： 一种用于从保护继电器获取和显示电力系统信息的显示换能器适配器。 信息包括瓦特，电压，电流，无功功率和故障位置信息。 信息可以从数字化格式转换为模拟信号，并且这些信号可以被提供为输出，其功能是用户可选择的。 用户还可以选择性地缩放输出以覆盖指定的范围。

公开(公告)号：US08793767B2

公开(公告)日：2014-07-29

申请号：US13599927

申请日：2012-08-30

申请人： Edmund O. Schweitzer, III ,  David E. Whitehead ,  Rhett Smith ,  Mark Weber

发明人： Edmund O. Schweitzer, III ,  David E. Whitehead ,  Rhett Smith ,  Mark Weber

IPC分类号： H04L29/06 ,  G06F21/60 ,  G06F21/82

CPC分类号： G06F21/606 ,  G06F21/82 ,  H04L63/0428 ,  H04L63/18 ,  H04W12/02 ,  H04W12/08 ,  Y04S40/164 ,  Y04S40/24

摘要： The present disclosure provides for selectively enabling a primary communication channel upon receipt of enablement instructions received via a secondary communication channel. In some embodiments, a first intelligent electronic device (IED) may be connected to a second IED via a primary communication channel. In various embodiments, the primary communication channel may be selectively and/or temporarily enabled by transmitting an enablement instruction via a secondary communication channel. The secondary communication channel may be relatively more secure than the primary communication channel. In some embodiments, the secondary communication channel may also connect the first and second IEDs. Accordingly, the first IED may transmit an enablement instruction to the second IED in order to temporarily enable communication via the primary communication channel between the first and second IEDs.

摘要翻译： 本公开提供了在接收到经由次要通信信道接收的启用指令时选择性地启用主要通信信道。 在一些实施例中，第一智能电子设备（IED）可以经由主通信信道连接到第二IED。 在各种实施例中，主通信信道可以通过经由辅助通信信道发送启用指令来选择性地和/或临时地使能。 次要通信信道可以比主要通信信道相对更安全。 在一些实施例中，辅助通信信道也可以连接第一和第二IED。 因此，第一IED可以向第二IED发送启用指令，以便暂时使能通过第一和第二IED之间的主要通信信道进行通信。

公开(公告)号：US20130163132A1

公开(公告)日：2013-06-27

申请号：US13333012

申请日：2011-12-21

申请人： Edmund O. Schweitzer, III

发明人： Edmund O. Schweitzer, III

IPC分类号： H02H3/02

CPC分类号： H02H7/263 ,  H02H1/0061

摘要： A high-speed signaling device on a branch of an electric power distribution system modulates the signal from the branch and communicates the signal to an intelligent electronic device on a feeder to the branch at speeds sufficient for the intelligent electronic device to modify protection algorithms based on the signal from the high-speed signaling device. The intelligent electronic device may be a recloser control that controls protective equipment such as a recloser. The signal may be sent via infrared and/or radio frequency. The signal may be modulated so as to communicate information such as the phase with which it is associated. The high-speed signaling device may further communicate current information to the intelligent electronic device.

摘要翻译： 电力分配系统的分支上的高速信号装置调制来自分支的信号，并将该信号传送到馈线上的智能电子设备到支路，该速度足以使智能电子设备基于 来自高速信号装置的信号。 智能电子设备可以是重新控制控制器，其控制诸如重合器的保护设备。 信号可以通过红外线和/或射频发送。 该信号可以被调制以便传送诸如与其相关联的相位的信息。 高速信号装置还可以将当前信息传送到智能电子设备。

公开(公告)号：US20120312977A1

公开(公告)日：2012-12-13

申请号：US13590772

申请日：2012-08-21

申请人： Edmund O. Schweitzer, III ,  Veselin Skendzic ,  Gary W. Scheer ,  James R. Kesler ,  Douglas M. Trout ,  Dhruba P. Das

发明人： Edmund O. Schweitzer, III ,  Veselin Skendzic ,  Gary W. Scheer ,  James R. Kesler ,  Douglas M. Trout ,  Dhruba P. Das

IPC分类号： H01L31/0232 ,  G01D18/00

CPC分类号： H02H1/0023 ,  G01D18/00 ,  H01L31/101 ,  H02H1/0069 ,  H02H3/044

摘要： An method for automatically testing an arc flash detection system by periodically or continually transmitting electro-optical (EO) radiation through one or more transmission cables electro-optically coupled to respective EO radiation collectors. A test EO signal may pass through the EO radiation collector to be received by an EO sensor. An attenuation of the EO signal may be determined by comparing the intensity of the transmitted EO signal to an intensity of the received EO signal. A self-test failure may be detected if the attenuation exceeds a threshold. EO signals may be transmitted according to a particular pattern (e.g., a coded signal) to allow an arc flash detection system to distinguish the test EO radiation from EO radiation indicative of an arc flash event.

摘要翻译： 一种通过周期地或连续地通过电光耦合到相应的EO辐射收集器的一个或多个传输电缆来传输电光（EO）辐射来自动测试电弧闪光检测系统的方法。 测试EO信号可以通过EO辐射收集器以由EO传感器接收。 可以通过将所发送的EO信号的强度与所接收的EO信号的强度进行比较来确定EO信号的衰减。 如果衰减超过阈值，则可以检测到自检失败。 可以根据特定模式（例如，编码信号）来传输EO信号，以允许电弧闪光检测系统将测试EO辐射与指示电弧闪光事件的EO辐射区分开。

公开(公告)号：US08275487B2

公开(公告)日：2012-09-25

申请号：US12854088

申请日：2010-08-10

申请人： Edmund O. Schweitzer, III ,  David E. Whitehead ,  Gregary C. Zweigle ,  Normann Fischer ,  Robert E. Morris

发明人： Edmund O. Schweitzer, III ,  David E. Whitehead ,  Gregary C. Zweigle ,  Normann Fischer ,  Robert E. Morris

IPC分类号： G06F19/00

CPC分类号： H02J3/16 ,  H02J3/06 ,  H02J3/1821 ,  H02J13/0062 ,  Y02E40/34 ,  Y02E40/74 ,  Y02E60/724 ,  Y02E60/726 ,  Y02E60/7838 ,  Y04S10/18 ,  Y04S10/22 ,  Y04S10/24 ,  Y04S40/124 ,  Y10T307/469

摘要： A system for controlling and automating an electric power delivery system by executing time coordinated instruction sets to achieve a desired result. A communication master may implement the execution of time coordinated instruction sets in a variety of circumstances. The communication may be embodied as an automation controller in communication with intelligent electronic devices (IEDs). The communication master may also be embodied as an IED that is configured to coordinate the actions of other IEDs. The time coordinated instruction sets may include steps for checking status of power system equipment before executing. The time coordinated instruction sets may include reactionary steps to execute if one of the steps fails. The time coordinated instruction sets may also be implemented based on a condition detected in the electric power delivery system, or may be implemented through high level systems, such as a SCADA system or a wide area control and situational awareness system.

摘要翻译： 一种用于通过执行时间协调指令集来控制和自动化电力输送系统以实现期望结果的系统。 通信主人可以在各种情况下实现时间协调指令集的执行。 通信可以被实现为与智能电子设备（IED）通信的自动化控制器。 通信主机还可以被体现为被配置为协调其他IED的动作的IED。 时间协调指令集可以包括在执行之前检查电力系统设备的状态的步骤。 时间协调指令集可以包括如果其中一个步骤失败则执行的反动步骤。 时间协调指令集还可以基于在电力输送系统中检测到的条件来实现，或者可以通过诸如SCADA系统或广域控制和情境感知系统的高级系统来实现。

公开(公告)号：US20110035066A1

公开(公告)日：2011-02-10

申请号：US12854088

申请日：2010-08-10

申请人： Edmund O. Schweitzer, III ,  David E. Whitehead ,  Gregary C. Zweigle ,  Normann Fischer ,  Robert E. Morris

发明人： Edmund O. Schweitzer, III ,  David E. Whitehead ,  Gregary C. Zweigle ,  Normann Fischer ,  Robert E. Morris

IPC分类号： G06F19/00 ,  H02J4/00

CPC分类号： H02J3/16 ,  H02J3/06 ,  H02J3/1821 ,  H02J13/0062 ,  Y02E40/34 ,  Y02E40/74 ,  Y02E60/724 ,  Y02E60/726 ,  Y02E60/7838 ,  Y04S10/18 ,  Y04S10/22 ,  Y04S10/24 ,  Y04S40/124 ,  Y10T307/469

摘要： A system for controlling and automating an electric power delivery system by executing time coordinated instruction sets to achieve a desired result. A communication master may implement the execution of time coordinated instruction sets in a variety of circumstances. The communication may be embodied as an automation controller in communication with intelligent electronic devices (IEDs). The communication master may also be embodied as an IED that is configured to coordinate the actions of other IEDs. The time coordinated instruction sets may include steps for checking status of power system equipment before executing. The time coordinated instruction sets may include reactionary steps to execute if one of the steps fails. The time coordinated instruction sets may also be implemented based on a condition detected in the electric power delivery system, or may be implemented through high level systems, such as a SCADA system or a wide area control and situational awareness system.

公开(公告)号：US07856327B2

公开(公告)日：2010-12-21

申请号：US12239678

申请日：2008-09-26

申请人： Edmund O. Schweitzer, III ,  Marcos A. Donolo ,  Armando Guzman-Casillas

发明人： Edmund O. Schweitzer, III ,  Marcos A. Donolo ,  Armando Guzman-Casillas

IPC分类号： G06F19/00

CPC分类号： G01R19/2513 ,  Y02E60/728 ,  Y04S10/265

摘要： A State and Topology Processor (STP) may be communicatively coupled to one or more intelligent electronic devices (IEDs) communicatively coupled to a electrical power system to obtain one or more current measurements, voltage measurements, and dynamic topology data therefrom. The STP may receive the measurement data and may determine a current topology and a voltage topology therefrom. A current processor may use the current topology and the current measurements to refine the measurements, perform KCL, unbalance, symmetrical component, and consistency checks on the electrical power system. The voltage processor may use the voltage topology and the voltage measurements to perform similar checks on the electrical power system. One or more alarms may be generated responsive to the checks. The data may be displayed to a user in a display of a human machine interface and/or may be transmitted to a user programmable task module, and/or an external control unit.

摘要翻译： 状态和拓扑处理器（STP）可以通信地耦合到通信地耦合到电力系统的一个或多个智能电子设备（IED），以从其获得一个或多个电流测量值，电压测量值和动态拓扑数据。 STP可以接收测量数据，并且可以从其确定当前的拓扑和电压拓扑。 当前的处理器可以使用当前的拓扑结构和当前的测量来细化测量，执行KCL，不平衡，对称分量和对电力系统的一致性检查。 电压处理器可以使用电压拓扑和电压测量来对电力系统执行类似的检查。 可以响应于检查而产生一个或多个警报。 数据可以在人机接口的显示器中向用户显示和/或可以被发送到用户可编程任务模块和/或外部控制单元。