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41. 发明授权

US09755458B2 Bus recovery after overload 有权
公开(公告)号：US09755458B2
公开(公告)日：2017-09-05
申请号：US14134786
申请日：2013-12-19
申请人： Kohler Co.
发明人： Isaac S. Frampton
IPC分类号： H02J9/08 , H02H7/06 , H02J3/48 , H02J3/38
CPC分类号： H02J9/08 , H02H7/062 , H02J3/38 , H02J3/381 , H02J3/48 , Y10T307/555
摘要： A set of generators are connected in parallel using a generator bus. At least one of the generators is associated with a controller. The controller detects an overload condition on the generator bus caused by a load and disconnects an initial generator from the generator bus in response to the overload condition. The initial generator continues to run during the overload condition after disconnecting from the generator bus but alternator excitation may be removed from the initial generator. The controller initiates starting one or more additional generator without alternator excitation. The controller also initiates connecting the initial generator and the one or more additional generators to the generator bus connected to the load. Alternator excitation is applied to the initial generator and the one or more additional generator so that adequate power may be applied to the load.

42. 发明申请

US20140359351A1 SYSTEMS AND METHODS FOR PROTECTION OF COMPONENTS IN ELECTRICAL POWER DELIVERY SYSTEMS 有权
标题翻译：用于保护电力输送系统中组件的系统和方法
公开(公告)号：US20140359351A1
公开(公告)日：2014-12-04
申请号：US14444295
申请日：2014-07-28
申请人： Schweitzer Engineering Laboratories, Inc.
发明人： Saurabh B. Shah , Kamal Garg , Scott M. Manson
IPC分类号： G06F1/30 , G06F11/07
CPC分类号： G06F1/30 , G06F11/0793 , H02H7/00 , H02H7/062 , H02H7/261
摘要： Various embodiments disclosed herein provide protection to monitored equipment at both a local level and a system level, in order to offer more comprehensive protection. In one particular embodiment, the protected equipment may include one or more generators. The protection system may utilize time-synchronized data in order to analyze data provided by systems having disparate sampling rates, that are monitored by different equipment, and/or equipment that is geographically separated. Various embodiments may be configured to utilize a variety of sampling rates.
摘要翻译：为了提供更全面的保护，本文公开的各种实施例在本地级和系统级都提供对被监视设备的保护。在一个具体实施例中，被保护设备可以包括一个或多个发电机。保护系统可以利用时间同步的数据来分析由具有不同设备监视的不同采样率的系统和/或地理上分离的设备提供的数据。各种实施例可以被配置为利用各种采样率。

43. 发明授权

US08792217B2 Systems and methods for protection of components in electrical power delivery systems 有权
标题翻译：用于保护电力输送系统中组件的系统和方法
公开(公告)号：US08792217B2
公开(公告)日：2014-07-29
申请号：US12882521
申请日：2010-09-15
申请人： Saurabh B. Shah , Kamal Garg , Scott M. Manson
发明人： Saurabh B. Shah , Kamal Garg , Scott M. Manson
IPC分类号： H02H7/00
CPC分类号： G06F1/30 , G06F11/0793 , H02H7/00 , H02H7/062 , H02H7/261
摘要： Various embodiments disclosed herein provide protection to monitored equipment at both a local level and a system level, in order to offer more comprehensive protection. In one particular embodiment, the protected equipment may include one or more generators. The protection system may utilize time-synchronized data in order to analyze data provided by systems having disparate sampling rates, that are monitored by different equipment, and/or equipment that is geographically separated. Various embodiments may be configured to utilize a variety of sampling rates.
摘要翻译：为了提供更全面的保护，本文公开的各种实施例在本地级和系统级都提供对被监视设备的保护。在一个具体实施例中，被保护设备可以包括一个或多个发电机。保护系统可以利用时间同步的数据来分析由具有不同设备监视的不同采样率的系统和/或地理上分离的设备提供的数据。各种实施例可以被配置为利用各种采样率。

44. 发明授权

US4953052A Pole slip protection circuit for paralleled generators 失效
标题翻译：用于平行发电机的极滑保护电路
公开(公告)号：US4953052A
公开(公告)日：1990-08-28
申请号：US381855
申请日：1989-07-19
申请人： Norman Cartlidge , Luiz Andrade , James Thom
发明人： Norman Cartlidge , Luiz Andrade , James Thom
IPC分类号： H02H7/06 , H02J3/40
CPC分类号： H02H7/062 , H02J3/40 , Y10T307/735 , Y10T307/852
摘要： A protection system (80) for a first generator unit (12) connectible by a first switch (24) to a power generating system having at least one additional generator unit with the at least one additional generator unit being connectible in parallel to the first generator unit with the first switch being opened in response to a first control signal to enable the first generator unit to be disconnected from the parallel connection to the at least one additional generator unit in accordance with the invention includes a signal generator (12) for generating a reference signal having a frequency proportional to a frequency of a voltage generated by the first generator unit; a sensor (14) for sensing a common frequency at a point of reference of voltage generated by the generator units of the power generating system; and a controller (14) responsive to the signal generator and the sensor, for calculating a difference between the frequency of the reference signal and the common frequency and for generating the first control signal in response to the difference being greater than a threshold.
摘要翻译：一种用于第一发电机单元（12）的保护系统（80），其可由第一开关（24）连接到具有至少一个附加发电机单元的发电系统，所述至少一个附加发电机单元可与第一发电机并联连接单元，其中第一开关响应于第一控制信号而被打开，以使得第一发电机单元能够从与所述至少一个附加发电机单元的并联连接断开，根据本发明包括一个信号发生器（12）参考信号具有与由第一发生器单元产生的电压的频率成比例的频率; 传感器（14），用于感测由所述发电系统的发电机单元产生的电压的参考点处的公共频率; 以及响应于所述信号发生器和所述传感器的控制器（14），用于计算所述参考信号的频率与所述公共频率之间的差，并且响应于所述差大于阈值来产生所述第一控制信号。

45. 发明授权

US4225793A Arrangement for monitoring a current network 失效
标题翻译：监控当前网络的安排
公开(公告)号：US4225793A
公开(公告)日：1980-09-30
申请号：US923294
申请日：1978-07-10
申请人： Horst Philipsen
发明人： Horst Philipsen
IPC分类号： H02H3/46 , H02H7/06 , H02J9/06 , H02J9/08
CPC分类号： H02J9/066 , H02H3/46 , H02H7/062
摘要： An arrangement for monitoring a current network to which is connected at least one self-excited or separately excited three-phase synchronous machine which is operatively connected e.g. to a device which is in immediate readiness for operation and comprises an energy storage device, while between the neutral or star point of the three-phase synchronous machine and the neutral wire of the network a monitoring device is arranged for controlling the network master switch. The monitoring device includes an M.sub.P -current converter, a load following the M.sub.P -converter and a frequency relay. The frequency relay ascertains the zero axis crossings of the dropping voltage on the load. The drop of the zero axis crossing frequency below a preset value serves as a signal for a network failure and for the actuation of the network switch and/or for other switch operations desired in this connection.
摘要翻译：一种用于监测当前网络的装置，其连接至少一个自激式或单独激励的三相同步电机，其可操作地连接到例如涉及一种即时准备进行操作的设备，包括能量存储装置，在三相同步电机的中性点或星形点与网络的中性线之间，设置监控装置来控制网络主开关。监控装置包括MP电流转换器，跟随MP转换器的负载和频率继电器。频率继电器确定负载上的跌落电压的零轴交叉。零轴交叉频率低于预设值的下降用作网络故障和网络交换机的启动信号和/或用于此连接所需的其他开关操作的信号。

46. 发明授权

US4138706A Electrical power supply fault detecting system 失效
标题翻译：电源故障检测系统
公开(公告)号：US4138706A
公开(公告)日：1979-02-06
申请号：US856526
申请日：1977-12-01
申请人： Lauren L. Johnson , Robert J. Wilson
发明人： Lauren L. Johnson , Robert J. Wilson
IPC分类号： H02H7/06
CPC分类号： H02H7/06 , H02H7/062
摘要： To detect system ground faults in a dual Y-connected output winding group polyphase alternator to direct current power supply system having direct current output circuitry isolated from a selected point of reference or ground potential, an electrical potential is applied across a selected point of reference or a ground potential and the alternator output winding group neutrals. A system ground fault completes a circuit through which this potential energizes the operating coil of an electrical relay having a pair of normally closed contacts connected in series in the alternator exciting field winding energizing circuit to effect the interruption of the alternator exciting field winding energizing circuit. To detect single phase operation faults, an auxiliary polyphase full-wave rectifier circuit is provided for each of the two alternator output winding groups. A single phase operation fault results in the completion of an electrical circuit including the auxiliary rectifier circuits for effecting the interruption of the alternator exciting field winding energizing circuit.
摘要翻译：为了检测双Y连接的输出绕组组多相交流发电机中的系统接地故障，直流电源系统具有与选定的参考点或接地电位隔离的直流输出电路，在选定的参考点或地电位和交流发电机输出绕组组中性点。系统接地故障完成电路，通过该电路，该电位使具有一对在交流发电机励磁励磁绕组通电电路中串联连接的一对常闭触点的继电器的工作线圈通电，以实现交流发电机励磁励磁绕组通电电路的中断。为了检测单相运行故障，为两个交流发电机输出绕组组中的每一个提供辅助多相全波整流电路。单相操作故障导致包括用于实现交流发电机励磁励磁绕组通电电路中断的辅助整流电路的电路的完成。

47. 发明授权

US4133017A Electrical power supply fault detecting system 失效
标题翻译：电力供应故障检测系统
公开(公告)号：US4133017A
公开(公告)日：1979-01-02
申请号：US855164
申请日：1977-11-28
申请人： Lauren L. Johnson , Robert J. Wilson
发明人： Lauren L. Johnson , Robert J. Wilson
IPC分类号： H02H7/06 , H02H3/28
CPC分类号： H02H7/06 , H02H7/062
摘要： To detect system ground faults and shorted alternator output winding turn-to-turn faults, the series combination of a resistor and the operating coil of an electrical relay having a normally closed contact pair is connected between the neutrals of two parallel connected polyphase alternator output winding groups, the junction between the resistor and operating coil is connected through a resistor to ground and the normally closed relay contact pair is connected in series in the alternator exciting field winding energizing circuit. To detect open diodes in the main polyphase diode bridge type full-wave rectifier circuit, an auxiliary polyphase full-wave rectifier circuit having the operating coil and normally closed contacts of two relays in series in each leg is provided. Upon the failure of a diode of the main rectifier circuit, sufficient current to operate the corresponding relay in the auxiliary rectifier circuit is diverted therethrough. Upon the operation of one of the auxiliary rectifier circuit relays, the magnitude of the energizing potential supplied to the alternator exciting field winding is reduced and upon the operation of more than one of the auxiliary rectifier circuit relays, the alternator exciting field winding energizing circuit is interrupted.

48. 发明授权

US3631258A Dc protection and control panel with generator field excitation control 失效
标题翻译：直流保护和控制面板与发电机励磁控制
公开(公告)号：US3631258A
公开(公告)日：1971-12-28
申请号：US3631258D
申请日：1970-03-31
申请人： LEAR SIEGLER INC
发明人： EISENSTADT DAVID L
IPC分类号： H02H7/06 , H02P9/30
CPC分类号： H02P9/30 , H02H7/062 , H02P2101/30 , Y10T307/615
摘要： A system for controlling the operation of and protecting a DC generator alone and in a parallel system of DC generators. The system performs the general control functions of voltage regulation, generator paralleling, load equalization, and the general protection functions of fault detection, overvoltage protection, and including the taking of appropriate action such as disconnecting or preventing the disconnection of the controlled generator from a parallel system.

49. 发明授权

US3294978A Unbalanced current protection apparatus for parallel generator systems 失效
标题翻译：并联发电机系统不平衡电流保护装置
公开(公告)号：US3294978A
公开(公告)日：1966-12-27
申请号：US25669663
申请日：1963-02-06
申请人： WESTINGHOUSE ELECTRIC CORP
发明人： BILLINGS WILLIAM W , APFELBECK OTTO L
IPC分类号： H02H7/06
CPC分类号： H02H7/062 , Y10T307/718 , Y10T307/729

50. 发明授权

US2949568A Protection of parallel connected d.-c. sources 失效
标题翻译：并联连接保护来源
公开(公告)号：US2949568A
公开(公告)日：1960-08-16
申请号：US59778156
申请日：1956-07-13
申请人： ITE CIRCUIT BREAKER LTD
发明人： DORTORT ISADORE K
IPC分类号： H02H7/06
CPC分类号： H02H7/062 , Y10T307/74

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