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11. 发明申请

WO2012176954A1 무접점 스위칭 소자를 이용한 과부하 보호기능이 구비된 능동형 영상고조파 필터 审中-公开
标题翻译：具有无接触开关元件的过载保护功能的主动零相位谐波滤波器
公开(公告)号：WO2012176954A1
公开(公告)日：2012-12-27
申请号：PCT/KR2011/006482
申请日：2011-08-31
申请人： (주)엘지산업 , 김경탁
发明人： 김경탁
IPC分类号： H02J3/01 , H02H3/52
CPC分类号： H02H3/52 , H02J3/01 , Y02E40/40
摘要： 본 발명은 무접점 스위칭 소자를 이용한 과부하 보호기능이 구비된 능동형 영상고조파 필터에 관한 것으로서, 보다 상세하게는 3상4선식 배전 계통의 중성선에서 발생하는 과다한 영상고조파를 감쇄하는 영상고조파 필터에 있어서 상기 영상고조파 필터로 유입되는 영상고조파를 제어함으로써 과부하가 걸리는 것을 최대한 방지하여 안정성을 높임과 동시에 효율적으로 영상고조파 감쇄 기능을 수행할 수 있게 한 무접점 스위칭 소자를 이용한 과부하 보호기능이 구비된 능동형 영상고조파 필터에 관한 것이다.
摘要翻译：本发明涉及一种具有使用非接触式开关元件的过载保护功能的有源零相谐波滤波器，其中有源零相位谐波滤波器控制引入零相位谐波滤波器的零相位谐波以最大限度地防止发生过载从而提高安全性，同时有效地执行零相位谐波衰减功能，更具体地说，涉及一种零相谐波滤波器，其衰减由三相四线分配系统的中性线产生的过零的零相位谐波。

12. 发明申请

WO2012012426A2 CONTINUOUS UNINTERRUPTABLE AC GROUNDING SYSTEM FOR POWER SYSTEM PROTECTION 审中-公开
标题翻译：连续的不间断交流接地系统用于电力系统保护
公开(公告)号：WO2012012426A2
公开(公告)日：2012-01-26
申请号：PCT/US2011/044536
申请日：2011-07-19
申请人： EMPRIMUS, INC. , FAXVOG, Frederick, R. , JENSEN, Wallace , NORDLING, Gale , FUCHS, Greg , JACKSON, David, Blake , VOLKMANN, Terry, Lee , RUEHL, James, Nicholas , GROH, Brian
发明人： FAXVOG, Frederick, R. , JENSEN, Wallace , NORDLING, Gale , FUCHS, Greg , JACKSON, David, Blake , VOLKMANN, Terry, Lee , RUEHL, James, Nicholas , GROH, Brian
IPC分类号： H02H9/00 , H02H3/00 , H02H3/52 , H02H7/04
CPC分类号： H02H3/52 , H02H1/04 , H02H5/005 , H02H7/04 , Y10T307/625 , Y10T307/707 , Y10T307/735 , Y10T307/832
摘要： A continuous grounding system for use in an alternating current system including a transformer is disclosed. The system includes a switch assembly connected between a transformer neutral of a transformer and a ground, the switch assembly having an open position and a closed position, the open position disrupting the path through the switch assembly between the electrical connection and the transformer neutral, and the closed position establishing a path connecting the electrical connection to the transformer neutral through the switch assembly, wherein in normal operation of the alternating current electrical device the switch assembly remains in a closed position. The system also includes a DC blocking component positioned in parallel with the switch assembly and connected between the transformer neutral and the ground. The system further includes a control circuit configured to control the switch assembly, the control circuit including a sensor configured to actuate the switch assembly to an open position upon detection of a predetermined harmonic signal threshold at one of the transformer phases or a predetermined threshold of DC current between the transformer neutral and ground.
摘要翻译：公开了用于包括变压器的交流系统的连续接地系统。该系统包括连接在变压器的变压器中性点与地之间的开关组件，开关组件具有打开位置和闭合位置，打开位置中断通过电气连接与变压器中性线之间的开关组件的路径，以及闭合位置建立了通过开关组件将电气连接连接到变压器中性线的路径，其中在交流电气装置的正常操作中，开关组件保持在闭合位置。该系统还包括与开关组件并联定位并连接在变压器中性线和地之间的DC阻断部件。该系统进一步包括配置成控制开关组件的控制电路，该控制电路包括传感器，该传感器配置成在检测到变压器相位之一处的预定谐波信号阈值或DC的预定阈值时将开关组件致动到打开位置变压器中线和地之间的电流。

13. 发明申请

WO2010130275A3 ELEKTRISCHER ENERGIEZÄHLER 审中-公开
公开(公告)号：WO2010130275A3
公开(公告)日：2010-11-18
申请号：PCT/EP2009/003465
申请日：2009-05-12
申请人： SIEMENS AKTIENGESELLSCHAFT , STÄHLE, Samuel, Thomas
发明人： STÄHLE, Samuel, Thomas
IPC分类号： G01R19/25 , H02H3/52
摘要： Die Erfindung bezieht sich auf einen elektrischen Energiezähler (14) zur Messung einer von einem Endverbraucher an einem Übergabepunkt (12) zwischen einem elektrischen Energieverteilungsnetz (11) und einem elektrischen Gebäudeverteilungsnetz (13) bezogenen elektrischen Energie mit - einer Messwerterfassungseinrichtung (20), die zur Messung von Strommesswerten und Spannungsmesswerten eingerichtet ist, die an dem Übergabepunkt (12) vorliegende Phasenströme und Phasenspannungen angeben; und - einer Messwertverarbeitungseinrichtung (21), die zur Ermittlung eines Elektroenergiemesswertes aus den Strommesswerten und Spannungsmesswerten eingerichtet ist, der die an dem Übergabepunkt (12) übertragene elektrische Energie angibt. Um die Sicherheit beim Betrieb eines elektrischen Gebäudeverteilungsnetzes zu erhöhen und insbesondere Risiken durch Überlastungen elektrischer Leitungen zu vermindern, wird vorgeschlagen, dass die Messwertverarbeitungseinrichtung (21) zur Ermittlung eines Oberschwingungsmesswertes eingerichtet ist, der einen Oberschwingungsgehalt der Phasenströme und/oder Phasenspannungen in den elektrischen Leitungen des Gebäudeverteilungsnetzes (13) angibt. Die Erfindung betrifft auch ein Verfahren zum Betrieb eines elektrischen Energiezahlers (14).

14. 发明申请

WO2006053567A9 COMPENSATION OF SIMPLE FIBEROPTIC FARADAY EFFECT SENSORS 审中-公开
标题翻译：简单的光纤法拉第效应传感器的补偿
公开(公告)号：WO2006053567A9
公开(公告)日：2006-06-29
申请号：PCT/DK2005000737
申请日：2005-11-18
申请人： NESA AS , BJOERN LARS NOERGAARD
发明人： BJOERN LARS NOERGAARD
IPC分类号： G01R31/02 , H02H3/52 , H02J13/00
CPC分类号： H04W4/14 , G01R1/00 , G01R15/246 , G01R19/2513 , G01R31/025 , G01R33/0322 , H04L67/12
摘要： The present invention relates to a monitoring system for detecting earth faults in an electrical power supply grid. The system may comprise a plurality of monitoring devices mounted in a number of monitoring locations, each of the monitoring devices may include a detector for detecting level of harmonics in the electrical power. The level of harmonics is preferably detected in a specific frequency range. The monitoring devices may further include a memory device for storing a harmonics reference value and may still further include a processor for comparing the level of harmonics with the reference level. The monitoring device may even still further include a communication device for transmitting an alarm provided the level of harmonics is above the reference level for a specific period of time.
摘要翻译：本发明涉及一种用于检测供电电网中的接地故障的监测系统。该系统可以包括安装在多个监控位置中的多个监控装置，每个监控装置可以包括用于检测电力中的谐波水平的检测器。谐波的电平最好在特定的频率范围内检测。监测设备还可以包括用于存储谐波参考值的存储器设备，并且还可以包括用于将谐波水平与参考水平进行比较的处理器。只要谐波水平高于参考水平一段特定时间，监测设备甚至可以进一步包括用于发送警报的通信设备。

15. 发明申请

WO2021259922A1 PROCÉDÉ DE DÉTECTION DE COURANTS DE FUITE OU DE DÉFAUT DANS UNE INSTALLATION ÉLECTRIQUE A PARTIR D'UN APPAREIL DE PROTECTION ASSURANT AU MOINS UNE PROTECTION DIFFÉRENTIELLE ET UN TEL APPAREIL CONVENANT A LA MISE EN ŒUVRE DUDIT PROCÉDÉ 审中-公开
公开(公告)号：WO2021259922A1
公开(公告)日：2021-12-30
申请号：PCT/EP2021/066976
申请日：2021-06-22
申请人： HAGER-ELECTRO SAS
发明人： DOLISY, Bastien , JOYEUX, Patrice , SCHNEIDER, Michel
IPC分类号： H02H3/33 , H02H3/52 , G01R15/183 , G01R19/10 , G01R31/52 , H02H3/332
摘要： La présente invention a pour objet un procédé de détection de courants de fuite ou de défaut dans une installation électrique à partir d’un appareil de protection, ladite installation électrique étant alimentée par un courant circulant dans au moins deux conducteurs d'un réseau alternatif ou continu. Il consiste à détecter une dissymétrie du signal de mesure alternatif entre son alternance, ou demi-période, positive et son alternance, ou demi-période, négative générée par la présence d’harmoniques de rang pair dans ledit signal de mesure alternatif représentatives d’un courant continu relatif à un courant de défaut survenant dans le réseau : soit en déterminant, par analyse fréquentielle du signal de mesure alternatif, une valeur de mesure représentative de l’apparition d’harmoniques de rang pair dans ledit signal de mesure alternatif, puis en comparant ladite valeur de mesure avec un seuil de référence que comprend ladite unité de traitement et de commande (3) pour émettre, selon le résultat de la comparaison, le signal de commande, soit en mesurant une première valeur d’une grandeur physique du signal de mesure alternatif dans son alternance, ou demi-période, positive et une deuxième valeur de ladite grandeur physique dans son alternance, ou demi-période, négative puis en effectuant leur différence et en la comparant à un seuil de référence pour émettre, selon le résultat de la comparaison, le signal de commande. Elle a également pour objet un tel appareil de protection convenant à la mise en œuvre dudit procédé.

16. 发明申请

WO2020069384A1 POWER GRID PROTECTION VIA TRANSFORMER NEUTRAL BLOCKING SYSTEMS AND TRIGGERED PHASE DISCONNECTION 审中-公开
公开(公告)号：WO2020069384A1
公开(公告)日：2020-04-02
申请号：PCT/US2019/053563
申请日：2019-09-27
申请人： EMPRIMUS, LLC
发明人： ANDERSON, David , FUCHS, Greg , FAXVOG, Frederick, R. , ANDERSON, George , JENSEN, Wallace
IPC分类号： H02H7/04 , H02H3/52
摘要： A protection circuit is disclosed. The protection circuit includes a direct current (DC) blocking component electrically connected between a neutral of the transformer and a ground, and an overvoltage protection device electrically connected in parallel with the DC blocking component. The overvoltage protection device is constructed to repeatably and reliably provide overvoltage protection in response to a voltage at the transformer neutral above a threshold. The DC blocking component has an impedance below a predetermined value, thereby effectively grounding the neutral of the transformer. The DC blocking component is persistently maintained in connection to the transformer neutral.

17. 发明申请

WO2019158754A4 SYSTEM AND METHOD FOR MONITORING AN OPERATING CONDITION OF AT LEAST ONE ELECTRICAL DEVICE USING A DATA SERVER ARRANGEMENT 审中-公开
公开(公告)号：WO2019158754A4
公开(公告)日：2019-08-22
申请号：PCT/EP2019/053976
申请日：2019-02-18
申请人： FARADAY PREDICTIVE LIMITED
发明人： BATES, Andrew , WALKER, Geoffrey , BOULTON, William , BANNISTER, Myles , ALFEIRAN, Bran
IPC分类号： G01R23/20 , G01R23/16 , G01R31/34 , H02H3/52 , H02H7/08
摘要： Disclosed is an electrical condition monitoring system (100) including a data server arrangement that is connectable to a monitoring unit that is configured to monitor an electrical device when in operation, wherein: the monitoring unit includes a sensing arrangement for temporally sensing electrical signals associated with the electrical device and generating corresponding sensed data; and a data processing arrangement including a data processor that is configured to: (i) process the sensed data to generate a corresponding temporally-changing Fourier spectrum including signal harmonic components; (ii) process temporal changes in magnitudes and frequencies of the signal harmonic components to generate analysis data; and (iii) communicate the analysis data to the data server arrangement to perform at least one of: (a) aggregating the analysis data received from the monitoring unit to obtain aggregated analysis data; (b) generating aggregated performance results in respect of the electrical device based on the aggregated analysis data; (c) providing control signals to the monitoring unit to monitor operation of the electrical device based on the aggregated performance results of the electrical device; (d) generating alerts relating to the electrical device when the aggregated performance results of the electrical device exceeds a threshold level; and (e) generating a condition assessment of the electrical device, wherein a condition of the at least one electrical device is assessed based on comparison between a real-time model of the electrical device generated based on the analysis data with one or more stored models of the electrical device.

18. 发明申请

WO2016143882A1 FAULT DETECTION IN INDUCTION MOTORS BASED ON CURRENT SIGNATURE ANALYSIS 审中-公开
标题翻译：基于电流签名分析的感应电动机故障检测
公开(公告)号：WO2016143882A1
公开(公告)日：2016-09-15
申请号：PCT/JP2016/057690
申请日：2016-03-04
申请人： MITSUBISHI ELECTRIC CORPORATION
发明人： LIU, Dehong
IPC分类号： H02H3/08 , H02H3/46 , H02H3/52 , H02H7/08 , H02H7/085
CPC分类号： G01R31/346 , G01R31/024 , H02H3/08 , H02H3/46 , H02H3/52 , H02H7/08 , H02H7/0833 , H02H7/0854
摘要： A method detects faults during a steady state of an operation of an induction motor. The method measures, in a time domain, a signal of a current powering the induction motor with a fundamental frequency and determines, in a frequency domain, a set of frequencies with non-zero amplitudes, such that a reconstructed signal formed by the set of frequencies with non-zero amplitudes approximates the signal measured in the time domain. The determining includes a compressive sensing via searching within a subband including the fundamental frequency of the signal subject to condition of a sparsity of the signal in the frequency domain. The method detects a fault in the induction motor if the set of frequencies includes a fault frequency different from the fundamental frequency.
摘要翻译：一种方法在感应电动机的运行的稳定状态期间检测故障。该方法在时域中测量以基频对感应电动机供电的电流的信号，并且在频域中确定具有非零幅度的一组频率，使得由所述一组具有非零幅度的频率近似于在时域中测量的信号。该确定包括通过在包括频域中的信号的稀疏度的条件的信号的基本频率的子带内搜索的压缩感测。如果频率组包括与基频不同的故障频率，则该方法检测感应电动机的故障。

19. 发明申请

WO2013066914A3 METHODS FOR DETECTING AN OPEN CURRENT TRANSFORMER 审中-公开
标题翻译：检测开路电流互感器的方法
公开(公告)号：WO2013066914A3
公开(公告)日：2013-08-01
申请号：PCT/US2012062653
申请日：2012-10-31
申请人： ABB RESEARCH LTD , BALL ROY
发明人： BALL ROY
IPC分类号： H02H3/52 , G01R31/02 , H02H3/04 , H02H7/04
CPC分类号： G01R31/027 , G01R15/18 , G01R31/026 , H02H3/044 , H02H3/52 , H02H7/042
摘要： A method for detecting an open current transformer in an electrical power system includes measuring for a voltage value on a secondary side of a current transformer. The method continues with observing the voltage value for a predetermined waveform and initiating corrective action in the electrical power system upon detection of the predetermined waveform.
摘要翻译：一种用于检测电力系统中的开路电流互感器的方法包括：测量电流互感器的次级侧上的电压值。该方法继续观察预定波形的电压值，并在检测到预定波形时开始电力系统中的校正动作。

20. 发明申请

WO2011003435A1 AN ARRANGEMENT AND A METHOD FOR MONITORING THE STATUS OF DC-SIDE REACTORS IN AN HVDC TRANSMISSION 审中-公开
标题翻译：一种用于监测直流输电直流侧反应器状态的方案和方法
公开(公告)号：WO2011003435A1
公开(公告)日：2011-01-13
申请号：PCT/EP2009/058474
申请日：2009-07-06
申请人： ABB TECHNOLOGY AG , JANSSON, Fredrik , NYBERG, Krister , JUHLIN, Lars-Erik
发明人： JANSSON, Fredrik , NYBERG, Krister , JUHLIN, Lars-Erik
IPC分类号： H02J3/36 , H02M7/757 , H02H7/122 , H02H3/52
CPC分类号： H02M7/7575 , H02J3/36 , Y02E60/60
摘要： An arrangement for monitoring the status of two smoothing reactors (7, 8) in a back-to-back-station having line-commutated thyristor converters (4, 5) and a DC-link (6) interconnecting the converters and provided with smoothing reactors (7, 8) and a grounded mid point (9), comprises means (10, 11) configured to measure the voltages across the two reactors and means (12-15) configured to filter out at least one of the dominating harmonic voltage components resulting from the commutations of said converters on the DC-side thereof from voltage values delivered by said first means for use thereof for determining the status of the smoothing reactors.
摘要翻译：一种用于监视具有线路换向晶闸管转换器（4,5）和互连转换器的直流链路（6）的背对背站中的两个平滑电抗器（7,8）的状态的布置，反应器（7,8）和接地中点（9）包括被配置为测量跨过两个电抗器的电压的装置（10,11），以及被配置为滤除至少一个主要谐波电压的装置（12-15）由所述转换器的直流侧的转换产生的电压与由所述第一装置输送的电压值一起用于确定平滑电抗器的状态。

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