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1. 发明授权

US5365396A Negative sequence directional element for a relay useful in protecting power transmission lines 失效
标题翻译：用于保护输电线路的继电器的负序定向元件
公开(公告)号：US5365396A
公开(公告)日：1994-11-15
申请号：US83454
申请日：1993-06-28
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 magnitude of the negative sequence impedance is calculated from the magnitude of the negative sequence voltage and magnitude of the negative sequence current. The scalar quantity is then compared against two threshold quantity settings, one to determine a forward fault and the other to determine a reverse fault. The threshold quantity settings include, respectively, a selected fraction of preselected basic threshold values and a selected fraction of the magnitude of the negative sequence impedance. 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。负序阻抗的大小根据负序电压的大小和负序电流的大小计算。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。阈值设置分别包括预选基本阈值的选定分数和负序阻抗幅度的选定分数。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。

2. 发明授权

US5262679A Polarizing potential transfer switch circuit for use with power transmission lines 失效
标题翻译：用于输电线路的极化电位转换开关电路
公开(公告)号：US5262679A
公开(公告)日：1993-11-16
申请号：US737373
申请日：1991-07-29
申请人： Edmund O. Schweitzer, III , Jeffrey B. Roberts , William D. Hawbaker
发明人： Edmund O. Schweitzer, III , Jeffrey B. Roberts , William D. Hawbaker
IPC分类号： H02B1/24 , H02H1/04 , H02J3/04
CPC分类号： H02J3/04 , H02B1/24 , H02H1/04 , Y10T307/826 , Y10T307/839
摘要： The polarizing potential transfer switch system takes advantage of an existing loss-of-potential (LOP) circuit (32) in a power transmission line protective system to differentiate between a trip signal produced by the distance elements in a protective relay (22) due to the operation of the transfer switch and a true fault condition. This is accomplished by a logic circuit (40) which includes a first timer (58) which permits the operator of the transfer switch (10) five seconds to complete the potential transfer operation between two buses (14 and 16) and a second timer (68) which gives the LOP circuit (32) a selected number of cycles in which to block a trip signal produced by the distance elements in the relay (22).
摘要翻译：极化电位转移开关系统利用电力传输线路保护系统中的现有的电位（LOP）电路（32）来区分由于保护继电器（22）中的距离元件产生的跳闸信号，由此转换开关的操作和真实的故障状态。这是通过逻辑电路（40）实现的，逻辑电路（40）包括第一定时器（58），其允许转换开关（10）的操作者五秒钟以完成两条总线（14和16）和第二计时器（14和16）之间的潜在转移操作 68）给LOP电路（32）选择数量的周期，以阻止由继电器（22）中的距离元件产生的跳闸信号。

3. 发明授权

US5349490A Negative sequence directional element for a relay useful in protecting power transmission lines 失效
标题翻译：用于保护输电线路的继电器的负序定向元件
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。

4. 发明授权

US06608742B2 Voltage and current source selection system for use in the protection, automation and control of an electric power system 有权
标题翻译：电压和电流源选择系统用于电力系统的保护，自动化和控制
公开(公告)号：US06608742B2
公开(公告)日：2003-08-19
申请号：US09899961
申请日：2001-07-06
申请人： Edmund O. Schweitzer, III , Jeffrey B. Roberts , Armando Guzman-Casillas , Joseph B. Mooney , Luther S. Anderson
发明人： Edmund O. Schweitzer, III , Jeffrey B. Roberts , Armando Guzman-Casillas , Joseph B. Mooney , Luther S. Anderson
IPC分类号： H02H300
CPC分类号： H02H1/063 , H02H3/00 , H02H7/261
摘要： The system includes a plurality of protection application elements to accomplish various power system protection functions, including for example line protection, line fault location, current direction determination, breaker protection and synchronism check, among others. The system includes local sources of current and voltage information for the protective functions as well as a receiving section for receiving such current and voltage values from a remote source, such as another protection device, as well as other necessary input information for the protective functions. A selection logic section is responsive to the output of the protective function elements, as well as the local and remote data to determine whether the primary or local sources are to be used. The outputs of the protective function elements are used by an output section to control circuit breakers and the like and are also transmitted, with the local and remote source quantities, to other protective devices.
摘要翻译：该系统包括多个保护应用元件，以实现各种电力系统保护功能，包括例如线路保护，线路故障定位，电流方向确定，断路器保护和同步检查等。该系统包括用于保护功能的本地电流和电压信息源以及用于从远程源（例如另一保护装置）接收这种电流和电压值的接收部分以及用于保护功能的其它必要的输入信息。选择逻辑部分响应于保护功能元件的输出以及本地和远程数据，以确定是使用主源还是本地源。保护功能元件的输出由输出部分用于控制断路器等，并且还将本地和远程源数据传输到其他保护装置。

5. 发明授权

US5602707A Detection of transformer high side fuse operations in a power transmission system 失效
标题翻译：变压器高侧保险丝检测在输变电系统中的运行
公开(公告)号：US5602707A
公开(公告)日：1997-02-11
申请号：US546481
申请日：1995-10-20
申请人： Edmund O. Schweitzer, III , Jeffrey B. Roberts
发明人： Edmund O. Schweitzer, III , Jeffrey B. Roberts
IPC分类号： H02H3/04 , H02H3/05 , H02H7/04
CPC分类号： H02H3/046 , H02H3/05 , H02H7/04
摘要： Voltage comparisons are made for each of the phase-phase voltages on a low side of a distribution transformer in a power system against a threshold, approximately 0.7 nominal secondary voltage, which is less than the value of at least one phase-phase voltage when only one high side fuse has operated. High outputs result when the phase-phase voltages exceed the threshold. At the same time voltage comparisons are made of each of the phase-phase low side voltages and a second threshold, approximately 0.2 nominal secondary voltage, which is substantially less than the first threshold. High outputs result when the voltages are below the threshold. A circuit output is provided which can be used to trip a low side circuit breaker when at least one output of the first comparisons is high and at least one output of the second comparisons is high.
摘要翻译：对于电力系统中配电变压器的低侧的每个相电压进行电压比较，阈值约为0.7，标称次级电压小于当仅仅至少一相相电压时的值一个高边保险丝已经运行。当相电压超过阈值时，会产生高输出。同时，对每个相位低侧电压和第二阈值进行电压比较，其大约为0.2标称次级电压，其大大小于第一阈值。当电压低于阈值时，会产生高输出。提供电路输出，当第一比较的至少一个输出为高并且第二比较的至少一个输出为高时，该输出可用于跳闸低侧断路器。

6. 发明授权

US5515227A Fault identification system for use in protective relays for power transmission lines 失效
标题翻译：用于输电线路保护继电器的故障识别系统
公开(公告)号：US5515227A
公开(公告)日：1996-05-07
申请号：US492890
申请日：1995-06-20
申请人： Jeffrey B. Roberts , Edmund O. Schweitzer, III
发明人： Jeffrey B. Roberts , Edmund O. Schweitzer, III
IPC分类号： H02H3/34 , H02H3/26
CPC分类号： H02H3/343
摘要： The angle between the negative sequence and zero sequence currents for a power signal on a transmission line is measured and compared against a plurality of successive angle ranges from 0.degree. to 360.degree.. If the angle is 0.degree..+-.30.degree., an AG fault is indicated and a first section output is produced blocking ground elements BG and CG and phase-to-phase elements AB and CA. An angle of 120.degree..+-.30.degree. indicates a BG fault, resulting in a second output blocking ground elements AG and CG and phase-to-phase elements AB and BC, while a phase angle of 240.degree..+-.30.degree. indicates a CG fault, resulting in a third output blocking ground elements AG and BG and phase-to-phase elements BC and CA. If the phase angle is not covered by the above three primary ranges, then a second stage of comparisons are made, including determining the magnitudes of the phase-to-phase distance elements, and then comparing the phase-to-phase resistance of the lowest of those with the apparent resistance of the one ground element, i.e. AG, BG or CG, associated with the non-primary (secondary) range of angles which includes the measured phase angle. If selected criteria are met, then an output is asserted to block the ground and phase-to-phase elements noted above associated with that ground element.
摘要翻译：测量传输线上的功率信号的负序和零序电流之间的角度，并与0°至360°的多个相继的角度范围进行比较。如果角度为0°+/- 30°，则表示AG故障，产生阻挡接地元件BG和CG以及相间元件AB和CA的第一段输出。 120°±30°的角度表示BG故障，导致第二输出阻塞接地元件AG和CG以及相间元件AB和BC，而相位角为240°±30°表示 CG故障，导致第三输出阻塞接地元件AG和BG以及相间元件BC和CA。如果相位角未被上述三个主要范围覆盖，则进行第二阶段的比较，包括确定相间距离元件的幅度，然后比较最低相位的相位电阻具有与包括测量的相位角的非初级（次级）角度范围相关联的一个接地元件即AG，BG或CG的视在电阻的那些。如果满足选择的标准，则输出被断言以阻止上述与该接地元件相关联的接地和相间元件。

7. 发明授权

US6011480A Protection quality capability for protective relays used in an electric power system 失效
标题翻译：电力系统中使用的保护继电器的保护质量能力
公开(公告)号：US6011480A
公开(公告)日：2000-01-04
申请号：US898793
申请日：1997-07-23
申请人： Edmund O. Schweitzer, III , Jeffrey B. Roberts
发明人： Edmund O. Schweitzer, III , Jeffrey B. Roberts
IPC分类号： H02H3/04 , G08B21/00
CPC分类号： H02H3/04
摘要： The system for determining protection quality of a protective relay and related functions of the protection system include obtaining information concerning the output status of the various protective elements in the relay. The status of various operations in the protective element are also evaluated against specific standards. The operation of supervisory and control elements affecting the action protective elements are also evaluated. Other aspects of the relay, including the availability of the relay and the operation of the voltage and current transformers are also evaluated. In addition, associated aspects such as the status of the communication channels, the station voltage availability and the condition of the trip and close circuits are monitored. All of the above is analyzed in a summary report to provide an indication of protection quality for the relay and associated protection system functions.
摘要翻译：用于确定保护继电器的保护质量的系统和保护系统的相关功能包括获得关于继电器中各种保护元件的输出状态的信息。保护要素中各种作业的状况也按照具体标准进行评估。还对影响行动保护要素的监督和控制要素的运行情况进行了评估。还评估了继电器的其他方面，包括继电器的可用性和电压和电流互感器的操作。此外，监视诸如通信信道的状态，站电压可用性以及跳闸和关闭电路的状况等相关方面。所有上述内容都在总结报告中进行分析，以提供继电器和相关保护系统功能的保护质量指示。

8. 发明授权

US5041737A Programmable bus-tie relay having a plurality of selectable setting groups 失效
标题翻译：具有多个可选设置组的可编程总线中继继电器
公开(公告)号：US5041737A
公开(公告)日：1991-08-20
申请号：US470061
申请日：1990-01-25
申请人： Edmund O. Schweitzer, III , Jeffrey B. Roberts
发明人： Edmund O. Schweitzer, III , Jeffrey B. Roberts
IPC分类号： H02H3/00
CPC分类号： H02H3/006 , Y10T307/74 , Y10T307/826
摘要： A bus-tie relay apparatus which includes a multi-position mechanical switch (54) and a logic circuit (56) responsive to the position of the mechanical switch (54) for producing digital signals on five digital lines (58), wherein a valid digital signal comprises the presence of high conditions on two, and two only, of said digital lines (58). A sensor (80) senses the condition of the digital lines (58) and retrieves the values of a relay element setting group from memory associated with that digital signal. A plurality of such relay element setting groups are stored in the apparatus, each one of which comprises values corresponding to the characteristics of an inplace relay associated with a particular one transmission line in a group thereof.
摘要翻译：一种汇流中继装置，包括多位机械开关（54）和响应于机械开关（54）的位置的逻辑电路（56），用于在五个数字线路（58）上产生数字信号，其中有效数字信号包括在所述数字线路（58）的两个且仅两个上存在高条件。传感器（80）感测数字线（58）的状态，并且从与该数字信号相关联的存储器中检索中继元件设置组的值。多个这样的中继元件设置组被存储在该装置中，每一个包括与其组中的特定一个传输线相关联的内置继电器的特性对应的值。

9. 发明授权

US09046391B2 Arc flash protection system with self-test 有权
标题翻译：电弧闪光保护系统具有自检功能
公开(公告)号：US09046391B2
公开(公告)日：2015-06-02
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： G02B5/10 , G01D18/00 , H02H1/00 , H02H3/04 , H01L31/101
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。

10. 发明授权

US08643215B2 Mobile auxilliary power system for electrical distribution and transmission systems 有权
标题翻译：用于配电和传输系统的移动辅助电力系统
公开(公告)号：US08643215B2
公开(公告)日：2014-02-04
申请号：US12721378
申请日：2010-03-10
申请人： Edmund O. Schweitzer, III
发明人： Edmund O. Schweitzer, III
IPC分类号： H02J9/00
CPC分类号： H02P9/42 , B60L11/1842 , B60L2200/26 , H02J3/38 , H02P9/48 , Y02E60/721 , Y02T10/642 , Y02T10/7005 , Y02T10/7072 , Y02T90/121 , Y02T90/128 , Y02T90/14 , Y02T90/163 , Y04S10/126 , Y10T307/352 , Y10T307/615 , Y10T307/642
摘要： A system, apparatus and method for increasing the reliability of an electric power transmission or distribution system by injecting controlled electric power into the transmission or distribution system using mobile electric power sources. The mobile electric power source may be a locomotive engine. The mobile electric power source may be controlled using an IED. The mobile electric power source may be controlled to provide active power or reactive power or act as a governor or exciter to the electric power transmission or distribution system.
摘要翻译：一种通过使用移动电源将控制电力注入变速器或分配系统来提高电力传输或配电系统的可靠性的系统，装置和方法。移动电源可以是机车引擎。可以使用IED来控制移动电源。可以控制移动电源以提供有功功率或无功功率，或充当电力传输或分配系统的调速器或激励器。

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