公开(公告)号：US06510436B1

公开(公告)日：2003-01-21

申请号：US09522200

申请日：2000-03-09

申请人： David G. Hart

发明人： David G. Hart

IPC分类号： G06F1730

CPC分类号： G06F17/30705 ,  Y10S707/99943

摘要： A system and method for clustering data from a server computer and sent to a client computer. The server computer obtains a requested cluster size for the client computer. The requested cluster size includes the optimal size cluster the client computer can handle and the largest manageable cluster size that can be handled by the client. Fuzzy logic computations are performed on the data to determine an optimal cluster size and an optimal point at which to split the data for the particular client. Part of the cluster computations are based upon the affinity of individual data items to adjacent data items in the clustered list. The server computer also checks the affinity between the item with the largest score and the first item in the next cluster. If this affinity is higher than other affinity scores within the cluster, the cluster split is moved accordingly. Once an optimal cluster is determined, the data is transmitted from the server computer to the client computer.

摘要翻译： 用于从服务器计算机聚集数据并发送到客户端计算机的系统和方法。 服务器计算机为客户端计算机获取所请求的群集大小。 所请求的群集大小包括客户端计算机可以处理的最佳大小群集以及可由客户端处理的最大可管理群集大小。 对数据执行模糊逻辑计算，以确定最佳的群集大小和为特定客户端分割数据的最佳点。 集群计算的一部分基于各个数据项与聚类列表中相邻数据项的亲和度。 服务器计算机还检查具有最大分数的项与下一个集群中的第一个项之间的关联性。 如果此亲和力高于群集中的其他亲和度分数，则相应地移动群集拆分。 一旦确定了最佳集群，数据就从服务器计算机发送到客户端计算机。

公开(公告)号：US07545285B2

公开(公告)日：2009-06-09

申请号：US11355690

申请日：2006-02-16

申请人： Kenneth C. Shuey ,  Andrew J. Borleske ,  Robert T. Mason, Jr. ,  David G. Hart

发明人： Kenneth C. Shuey ,  Andrew J. Borleske ,  Robert T. Mason, Jr. ,  David G. Hart

IPC分类号： G08C19/16

CPC分类号： G01D4/004 ,  Y02B90/242 ,  Y02B90/244 ,  Y02B90/246 ,  Y04S20/322 ,  Y04S20/327 ,  Y04S20/42

摘要： A load control system that communicates with existing automated meter reading communications systems to interrupt and shed loads at a customer location. The system includes a master controller that listens to communications between a utility meter and the reading system. The controller receives tier and/or pricing information and will instruct a load control unit to interrupt certain loads based on the information. In addition, the system may be employed as a load shedding system where a command may be forwarded to the master controller to disconnect loads based on action levels. The command may be sent via a TCP/IP communications system to a node in the reading system and the forwarded via a radio network to the master controller to reduce latency. Predictive shedding may be performed based on forecast loads.

摘要翻译： 与现有的自动抄表通信系统通信的负载控制系统，以在客户位置中断和流出负载。 该系统包括主控制器，用于监听公用事业电表和读取系统之间的通信。 控制器接收层和/或定价信息，并将指示负载控制单元根据该信息中断某些负载。 此外，该系统可以用作卸载系统，其中命令可以被转发到主控制器以基于动作级别断开负载。 该命令可以通过TCP / IP通信系统发送到读取系统中的节点，并通过无线电网络转发到主控制器以减少延迟。 预测脱落可以基于预测负荷进行。

公开(公告)号：US06867958B2

公开(公告)日：2005-03-15

申请号：US09749192

申请日：2000-12-27

申请人： Graeme N. McClure ,  Jeffrey L. McElray, Sr. ,  Robert A. Smith ,  Carl LaPlace ,  David G. Hart ,  William M. Egolf

发明人： Graeme N. McClure ,  Jeffrey L. McElray, Sr. ,  Robert A. Smith ,  Carl LaPlace ,  David G. Hart ,  William M. Egolf

IPC分类号： H02H3/06 ,  H02H7/26 ,  H02H3/00

CPC分类号： H02H7/266 ,  H02H3/063

摘要： A system and methods that enable a restoration scheme for power distribution systems that is independent of power distribution system component configuration, the number of power distribution system components, and component settings are provided. In a power distribution system, a number of intelligent reclosers having restoration control modules are deployed that execute a restoration scheme. The intelligent reclosers constantly poll cooperating power distribution lines to determine changes in current or voltage provided by the power distribution lines. In the event of a power distribution system fault, the reclosers act in accordance to a predefined restoration scheme to reanimate the unaffected portions of the failing power distribution system.

摘要翻译： 提供了独立于配电系统组件配置，配电系统组件数量和组件设置的配电系统的恢复方案的系统和方法。 在配电系统中，部署了具有执行恢复方案的具有恢复控制模块的多个智能重合器。 智能重合器不断轮询合作配电线路以确定配电线路提供的电流或电压的变化。 在发生配电系统故障的情况下，重合器根据预定义的恢复方案起作用以重新启动故障配电系统的未受影响部分。

公开(公告)号：US06747373B1

公开(公告)日：2004-06-08

申请号：US10034063

申请日：2001-12-26

申请人： Yi Hu ,  Luciano Di Maio ,  Fabio Gatelli ,  William M. Egolf ,  David G. Hart

发明人： Yi Hu ,  Luciano Di Maio ,  Fabio Gatelli ,  William M. Egolf ,  David G. Hart

IPC分类号： G05F300

CPC分类号： H02M1/12 ,  Y10T307/826

摘要： System and methods for coordinating the control system of a switched power capacitor with an integrated resonance protection function. The coordination system coordinates the function of a switched power capacitor's primary control system and resonance protection system to avoid duplication of tasks and on/off operation deadlock. The coordination system adjusting calculations made by the primary control system in response to a determination of a harmonic resonance condition by the resonance protection system.

摘要翻译： 用于协调具有集成谐振保护功能的开关式电力电容器的控制系统的系统和方法。 协调系统协调开关电源电容器的主控制系统和共振保护系统的功能，以避免重复任务和开/关操作死锁。 协调系统根据由谐振保护系统确定的谐波共振状态来调整主控系统进行的计算。

公开(公告)号：US06735534B2

公开(公告)日：2004-05-11

申请号：US09810810

申请日：2001-03-16

申请人： Graeme N. McClure ,  Carl J. LaPlace ,  David G. Hart ,  William M. Egolf

发明人： Graeme N. McClure ,  Carl J. LaPlace ,  David G. Hart ,  William M. Egolf

IPC分类号： G01R3100

CPC分类号： H02H3/06

摘要： A recloser trips on one phase for single-phase only fault conditions, or all phases for multi-phase fault conditions. During power delivery, the recloser monitors the three phases of a power line (e.g., phases A, B, and C). If a fault is detected on one phase, then a timer is started and subsequently decremented. If the timer finishes counting down while the fault is still present, then it is determined if any of the other two phases are timing a fault. If so, then all three phases are tripped; otherwise, only the faulted phase is tripped.

摘要翻译： 重合器在单相故障条件的一相中跳闸，或多相故障条件的所有相。 在电力输送期间，重合器监测电力线（例如，相A，B和C）的三相。 如果在一个相位上检测到故障，则启动定时器并随后递减。 如果定时器在故障仍然存在时完成倒计时，则确定其他两个相位中是否存在故障定时。 如果是这样，那么所有三个阶段都会跳闸; 否则，只有故障相位跳闸。

公开(公告)号：US06397156B1

公开(公告)日：2002-05-28

申请号：US09192851

申请日：1998-11-17

申请人： Bernhard Bachmann ,  David G. Hart ,  Yi Hu ,  Damir Novosel ,  Murari M. Saha

发明人： Bernhard Bachmann ,  David G. Hart ,  Yi Hu ,  Damir Novosel ,  Murari M. Saha

IPC分类号： G01R2500

CPC分类号： H02H3/40 ,  H02H1/04

摘要： An accurate impedance measurement method for a power system transmission line is disclosed for improving various protection functions, i.e., distance protection and/or fault location estimation. The method is less sensitive to harmonics and other transient problems introduced to power systems by series capacitance and the like, and is easily incorporated into existing protective relays. In the method, a number (n) of current and voltage samples (Ik, Vk) representative of values of current and voltage waveforms are measured, respectively, at successive instants of time on a conductor in a power system. The number n is an integer greater than I and the index k takes on values of 1 to n. Resistance (R) and inductance (L) values are computed in accordance with an equation in which R and L are related to sums of differences in values of successive current and voltage samples. A prescribed power system function is then performed based on the computed R and L values.

摘要翻译： 公开了一种用于电力系统传输线路的精确阻抗测量方法，用于改进各种保护功能，即距离保护和/或故障位置估计。 该方法对通过串联电容等引入电力系统的谐波和其他瞬态问题较不敏感，并且容易地并入现有的保护继电器中。 在该方法中，分别在电力系统中的导体上的连续时刻分别测量表示电流和电压波形值的电流和电压样本数（Ik，Vk）的数量（n）。 数字n是大于I的整数，索引k取值为1到n。 电阻（R）和电感（L）值根据其中R和L与连续电流和电压样本的值的差的和相关的方程式来计算。 然后根据计算的R和L值执行规定的电力系统功能。

公开(公告)号：US4489358A

公开(公告)日：1984-12-18

申请号：US423330

申请日：1982-09-24

申请人： William R. Davis ,  David G. Hart

发明人： William R. Davis ,  David G. Hart

IPC分类号： G11B33/02 ,  G11B33/12 ,  G11B33/14 ,  H05K7/16 ,  H05K7/18 ,  H05K7/20 ,  H02B1/02

CPC分类号： G11B33/02 ,  G11B33/12 ,  G11B33/1406 ,  H05K7/16 ,  H05K7/18 ,  H05K7/20009

摘要： To mimimize the weight of a magnetic tape recorder chassis and cabinet assembly, a wire frame chassis (18) carrying printed circuit board guides (20) and connectors (22) is mounted to one side of a sand cast bezel (24), and polyurethane wall panels (16) are secured to the wire frame. A cabinet cover and underlying tape transport assembly are hinged to the bezel to enable pivoting away from the wire frame, exposing circuit boards for servicing. The "open air flow" characteristic of the wire frame chassis (18) helps cool critical electrical components.

摘要翻译： 为了模拟磁带录音机机架和机柜组件的重量，承载印刷电路板引导件（20）和连接器（22）的线框底架（18）安装在砂铸表圈（24）的一侧，聚氨酯 墙板（16）固定在线框上。 机柜盖和下层带运输组件铰接到挡板上以使得能够远离线框架转动，露出用于维修的电路板。 线框架底架（18）的“露天气流”特性有助于冷却关键的电气部件。

公开(公告)号：US20100278187A1

公开(公告)日：2010-11-04

申请号：US12433400

申请日：2009-04-30

申请人： David G. Hart ,  Edward J. Beroset ,  Carl J. LaPlace

发明人： David G. Hart ,  Edward J. Beroset ,  Carl J. LaPlace

IPC分类号： H04J3/16 ,  H04L12/56

CPC分类号： H04L45/00 ,  H04L67/12 ,  H04L69/18

摘要： Techniques for using an Advanced Metering Infrastructure (AMI) system for Utility Automation (UA) purposes in a utility distribution system are disclosed herein. In an AMI system, a metering node often includes a communications option board for connecting to a wide area network (WAN), which can be shared between the AMI system and a UA system. The metering node may be near other devices that can be controlled by a utility company to monitor and control components of the utility distribution system. A data packet is received in a communication device. The communication device determines whether the received data packet is formatted according to a first protocol employed by the AMI system. If so, then the data packet is forwarded to a first device in communication with the AMI system. If not, then the data packet is forwarded to a second device in communication with the UA system.

摘要翻译： 本文公开了在公用设施分配系统中使用用于实用自动化（UA）的高级计量基础设施（AMI）系统的技术。 在AMI系统中，计费节点通常包括用于连接到可以在AMI系统和UA系统之间共享的广域网（WAN）的通信选件板。 计量节点可能靠近可由公用事业公司控制以监视和控制公用设施分配系统的组件的其他设备。 在通信设备中接收数据分组。 通信设备确定接收到的数据分组是否根据AMI系统采用的第一协议进行格式化。 如果是，则将数据分组转发到与AMI系统通信的第一设备。 如果不是，则将数据分组转发到与UA系统通信的第二设备。

公开(公告)号：US06687573B2

公开(公告)日：2004-02-03

申请号：US09803839

申请日：2001-03-12

申请人： William M. Egolf ,  David G. Hart ,  Carl J. LaPlace ,  Graeme N. McClure

发明人： William M. Egolf ,  David G. Hart ,  Carl J. LaPlace ,  Graeme N. McClure

IPC分类号： H02H3093

CPC分类号： H02H3/07 ,  H02H3/006 ,  H02H3/063 ,  H02H7/30

摘要： An automatic power restoration device has a modifiable end point. The end point is indicative of the operational parameters of the automatic power restoration device. A user can modify the end point and thus the operational parameters of the automatic power restoration device. The end point can be modified according to the protection characteristics of other fault protection devices within a power system.

摘要翻译： 自动电源恢复装置具有可修改的端点。 终点表示自动电力恢复装置的运行参数。 用户可以修改终点，从而修改自动电源恢复装置的操作参数。 终点可以根据电力系统内其他故障保护装置的保护特性进行修改。

公开(公告)号：US06584417B1

公开(公告)日：2003-06-24

申请号：US09425661

申请日：1999-10-22

申请人： Yi Hu ,  Damir Novosel ,  David G. Hart

发明人： Yi Hu ,  Damir Novosel ,  David G. Hart

IPC分类号： G01R3108

CPC分类号： G01R31/085 ,  H02H3/081 ,  H02H3/405

摘要： An electrical power system includes a transmission line for transmitting electrical power, series capacitance compensation series-coupled to the transmission line adjacent one end thereof, where the series compensation includes a capacitance having a value (−j XCAP), and a protective relay at the one end of the transmission line for monitoring line voltages and line currents on the transmission line. Upon sensing a fault, an impedance Z of the line is calculated based on the monitored line voltages and line currents. The calculated impedance Z is adjusted according to the value of the capacitance of the series compensation (−j XCAP) to result in a modified impedance ZMOD, and the phasor angle Of ZMOD is examined to determine the direction of the sensed fault. The fault is in a first direction if the phasor angle is between X and X+180 degrees and is in a second direction opposite the first direction if the phasor angle is between X+180 and X+360 degrees.

摘要翻译： 电力系统包括用于发送电力的传输线，串联耦合到其一端附近的传输线的串联电容补偿，其中串联补偿包括具有值（-j XCAP）的电容，以及保护继电器 传输线的一端用于监测传输线上的线路电压和线路电流。 在检测到故障时，根据被监测的线路电压和线路电流计算线路的阻抗Z。 根据串联补偿（-j XCAP）的电容值调整计算阻抗Z，得到修正的阻抗ZMOD，并检查ZMOD的相量角以确定感测故障的方向。 如果相量角在X和X + 180度之间，并且如果相量角在X + 180和X + 360度之间，并且处于与第一方向相反的第二方向，则故障处于第一方向。