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1. 发明申请

US20100026317A1 IMPEDANCE-BASED ARC FAULT DETERMINATION DEVICE (IADD) AND METHOD 有权
标题翻译：基于阻抗的ARC故障确定装置（IADD）和方法
公开(公告)号：US20100026317A1
公开(公告)日：2010-02-04
申请号：US12573084
申请日：2009-10-02
申请人： Edward Randolph Collins, JR. , Timothy Lee Smith , Randall J. Emanuel
发明人： Edward Randolph Collins, JR. , Timothy Lee Smith , Randall J. Emanuel
IPC分类号： G01R27/28
CPC分类号： G01R27/16 , G01R19/2513 , G01R31/025
摘要： Embodiments according to the present invention provide an Impedance-based Arc-Fault Determination Device (IADD) and method that, when attached to an electrical node on the power system and through observations on voltage, current and phase shift with a step load change, determine the effective Thevenin equivalent circuit or Norton equivalent circuit at the point of test. The device and method determine the expected bolted fault current at the test location of interest, which enables calculation of incident energy and the assignment of a flash-hazard risk category.
摘要翻译：根据本发明的实施例提供了一种基于阻抗的电弧故障确定装置（IADD）和方法，当其连接到电力系统上的电节点上时，并且通过对步进负载变化的电压，电流和相移进行观测，确定有效的戴维宁等效电路或诺顿等效电路在测试点。该装置和方法确定感兴趣的测试位置处的预期螺栓故障电流，这使得能够计算入射能量和分配闪电危险风险类别。

2. 发明授权

US08362789B2 Impedance-based arc fault determination device (IADD) and method 有权
公开(公告)号：US08362789B2
公开(公告)日：2013-01-29
申请号：US12573084
申请日：2009-10-02
申请人： Edward Randolph Collins, Jr. , Timothy Lee Smith , Randall J. Emanuel
发明人： Edward Randolph Collins, Jr. , Timothy Lee Smith , Randall J. Emanuel
IPC分类号： G01R27/28 , H02H3/00
CPC分类号： G01R27/16 , G01R19/2513 , G01R31/025
摘要： Embodiments according to the present invention provide an Impedance-based Arc-Fault Determination Device (IADD) and method that, when attached to an electrical node on the power system and through observations on voltage, current and phase shift with a step load change, determine the effective Thevenin equivalent circuit or Norton equivalent circuit at the point of test. The device and method determine the expected bolted fault current at the test location of interest, which enables calculation of incident energy and the assignment of a flash-hazard risk category.

3. 发明授权

US07598751B2 Impedance-based arc fault determination device (IADD) and method 有权
标题翻译：基于阻抗的电弧故障确定装置（IADD）和方法
公开(公告)号：US07598751B2
公开(公告)日：2009-10-06
申请号：US11838831
申请日：2007-08-14
申请人： Edward Randolph Collins, Jr. , Timothy Lee Smith , Randall J. Emanuel
发明人： Edward Randolph Collins, Jr. , Timothy Lee Smith , Randall J. Emanuel
IPC分类号： G01R27/28 , H02H3/00
CPC分类号： G01R27/16 , G01R19/2513 , G01R31/025
摘要： Embodiments according to the present invention provide an Impedance-based Arc-Fault Determination Device (IADD) and method that, when attached to an electrical node on the power system and through observations on voltage, current and phase shift with a step load change, determine the effective Thevenin equivalent circuit or Norton equivalent circuit at the point of test. The device and method determine the expected bolted fault current at the test location of interest, which enables calculation of incident energy and the assignment of a flash-hazard risk category.
摘要翻译：根据本发明的实施例提供了一种基于阻抗的电弧故障确定装置（IADD）和方法，当其连接到电力系统上的电节点上时，并且通过对步进负载变化的电压，电流和相移进行观测，确定有效的戴维宁等效电路或诺顿等效电路在测试点。该装置和方法确定感兴趣的测试位置处的预期螺栓故障电流，这使得能够计算入射能量和分配闪电危险风险类别。

4. 发明授权

US08762085B2 Method of estimating short circuit current available by analysis of DC charging circuit 有权
标题翻译：通过直流充电电路分析估算短路电流的方法
公开(公告)号：US08762085B2
公开(公告)日：2014-06-24
申请号：US12903540
申请日：2010-10-13
申请人： Timothy Lee Smith
发明人： Timothy Lee Smith
IPC分类号： G01R27/00 , G01R31/00 , G01R1/36 , H02H3/00
CPC分类号： G01R31/025 , G01R19/2513 , G01R31/12
摘要： A system and method of dynamically estimating the short circuit current availability (SCCA) at a node in an alternating current electrical distribution system by examining the spectral composition of current drawn by a direct current charging circuit connected to the node. A correlative relationship between the total harmonic current distortion (THDi) in the current drawn by the charging circuit and the SCCA at the node is established for a particular charging circuit. An estimation of the SCCA at the node is accomplished by taking current measurements of current drawn by the charging circuit, analyzing those current measurements to determine the THDi, and estimating a corresponding value of SCCA based on the determined THDi. A method is also provided for calibrating a particular charging circuit to have a reactance and resistance suitable for use in estimating SCCA.
摘要翻译：一种通过检查由连接到节点的直流充电电路吸取的电流的频谱组成来动态地估计交流电配电系统中节点处的短路电流可用性（SCCA）的系统和方法。对于特定的充电电路，建立由充电电路抽出的电流和节点处的SCCA之间的总谐波电流失真（THDi）之间的相关关系。通过对充电电路绘制的电流进行当前测量，分析这些电流测量值来确定THDi，并根据确定的THDi估计相应的SCCA值，来实现节点处SCCA的估计。还提供了一种用于校准特定充电电路以具有适合用于估计SCCA的电抗和电阻的方法。

5. 发明申请

US20130066478A1 OPTIMIZED PROTECTION COORDINATION OF ELECTRONIC-TRIP CIRCUIT BREAKER BY SHORT CIRCUIT CURRENT AVAILABILITY MONITORING 有权
标题翻译：短路保护协调电子线路断路器电流可用性监测
公开(公告)号：US20130066478A1
公开(公告)日：2013-03-14
申请号：US13227614
申请日：2011-09-08
申请人： Timothy Lee Smith
发明人： Timothy Lee Smith
IPC分类号： G06F1/28
CPC分类号： H02H3/006
摘要： Centralized coordination of setting and adjusting trip settings of electronic circuit breakers in an electrical distribution system by monitoring short circuit current availability (SCCA) and adjusting trip settings based on received SCCA estimates from SCCA monitoring devices installed at main, feeder, and branch nodes of the distribution system. The SCCA monitoring devices are capable of automatically estimating the SCCA in the circuit or node at which the SCCA device is installed and transmitting SCCA estimates to a controller, which uses the SCCA estimates to coordinate adjustments to trip settings for the various circuit breakers. Depending on the node position of the circuit breaker and the corresponding SCCA at that node, the controller adjusts in real-time the short-circuit trip settings for the circuit breakers so that they are below the SCCA value. Optional user-inputted settings can affect the trip setting adjustments, such as transient loading conditions that can influence the SCCA estimates.
摘要翻译：通过监控短路电流可用性（SCCA）和调整跳闸设置，根据安装在主，馈线和分支节点上的SCCA监控设备的接收到的SCCA估计值，集中协调配电系统中电子断路器的跳闸设置分发系统。 SCCA监视设备能够自动估计安装SCCA设备的电路或节点中的SCCA，并将SCCA估计值发送给控制器，控制器使用SCCA估计来协调各种断路器的跳闸设置的调整。根据断路器的节点位置和该节点处的相应SCCA，控制器实时调整断路器的短路跳闸设置，使其低于SCCA值。可选的用户输入设置可以影响跳闸设置调整，例如可能影响SCCA估计的瞬态负载条件。

6. 发明申请

US20120095709A1 Method of Estimating Short Circuit Current Available by Analysis of DC Charging Circuit 有权
标题翻译：通过直流充电电路分析估算短路电流的方法
公开(公告)号：US20120095709A1
公开(公告)日：2012-04-19
申请号：US12903540
申请日：2010-10-13
申请人： Timothy Lee Smith
发明人： Timothy Lee Smith
IPC分类号： G01R27/00
CPC分类号： G01R31/025 , G01R19/2513 , G01R31/12
摘要： A system and method of dynamically estimating the short circuit current availability (SCCA) at a node in an alternating current electrical distribution system by examining the spectral composition of current drawn by a direct current charging circuit connected to the node. A correlative relationship between the total harmonic current distortion (THDi) in the current drawn by the charging circuit and the SCCA at the node is established for a particular charging circuit. An estimation of the SCCA at the node is accomplished by taking current measurements of current drawn by the charging circuit, analyzing those current measurements to determine the THDi, and estimating a corresponding value of SCCA based on the determined THDi. A method is also provided for calibrating a particular charging circuit to have a reactance and resistance suitable for use in estimating SCCA.
摘要翻译：一种通过检查由连接到节点的直流充电电路吸取的电流的频谱组成来动态地估计交流电配电系统中节点处的短路电流可用性（SCCA）的系统和方法。对于特定的充电电路，建立由充电电路抽出的电流和节点处的SCCA之间的总谐波电流失真（THDi）之间的相关关系。通过对充电电路绘制的电流进行当前测量，分析这些电流测量值来确定THDi，并根据确定的THDi估计相应的SCCA值，来实现节点处SCCA的估计。还提供了一种用于校准特定充电电路以具有适合用于估计SCCA的电抗和电阻的方法。

7. 发明授权

US08718830B2 Optimized protection coordination of electronic-trip circuit breaker by short circuit current availability monitoring 有权
标题翻译：通过短路电流可用性监控优化电子跳闸断路器的保护协调
公开(公告)号：US08718830B2
公开(公告)日：2014-05-06
申请号：US13227614
申请日：2011-09-08
申请人： Timothy Lee Smith
发明人： Timothy Lee Smith
IPC分类号： G05D3/12 , G05D5/00 , G05D9/00 , G05D11/00 , G05D17/00 , H02H3/00 , H02H7/00 , H02H1/00 , H01H73/00
CPC分类号： H02H3/006
摘要： Centralized coordination of setting and adjusting trip settings of electronic circuit breakers in an electrical distribution system by monitoring short circuit current availability (SCCA) and adjusting trip settings based on received SCCA estimates from SCCA monitoring devices installed at main, feeder, and branch nodes of the distribution system. The SCCA monitoring devices are capable of automatically estimating the SCCA in the circuit or node at which the SCCA device is installed and transmitting SCCA estimates to a controller, which uses the SCCA estimates to coordinate adjustments to trip settings for the various circuit breakers. Depending on the node position of the circuit breaker and the corresponding SCCA at that node, the controller adjusts in real-time the short-circuit trip settings for the circuit breakers so that they are below the SCCA value. Optional user-inputted settings can affect the trip setting adjustments, such as transient loading conditions that can influence the SCCA estimates.
摘要翻译：通过监控短路电流可用性（SCCA）和调整跳闸设置，根据安装在主，馈线和分支节点上的SCCA监控设备的接收到的SCCA估计值，集中协调配电系统中电子断路器的跳闸设置分发系统。 SCCA监视设备能够自动估计安装SCCA设备的电路或节点中的SCCA，并将SCCA估计值发送给控制器，控制器使用SCCA估计来协调各种断路器的跳闸设置的调整。根据断路器的节点位置和该节点处的相应SCCA，控制器实时调整断路器的短路跳闸设置，使其低于SCCA值。可选的用户输入设置可以影响跳闸设置调整，例如可能影响SCCA估计的瞬态负载条件。

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