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1. 发明公开

EP0769150A1 MONITORING OF INTERNAL PARTIAL DISCHARGES ON A POWER TRANSFORMER 失效
标题翻译：局部放电的电力变压器监测
公开(公告)号：EP0769150A1
公开(公告)日：1997-04-23
申请号：EP96913760.0
申请日：1996-04-29
申请人： ABB RESEARCH LTD.
发明人： ERIKSSON, Thomas , LEIJON, Mats
IPC分类号： G01R31
CPC分类号： G01R31/027 , G01R31/1227
摘要： In a method for monitoring of partial discharges in an electric power transformer (1) under normal operating conditions, the magnetic field at a high-voltage bushing (2) on the power transformer is sensed with an inductive sensor (6) comprising at least one coil (6a, 6b) arranged at the bushing, and the electric field at the bushing is sensed with a capacitive sensor (5). The output signals from said sensors are supplied to a signal processing unit (3) in which each one of the output signals is filtered in a separate bandpass filter (101, 102), whereupon the filtered output signals from said sensors are multiplied by each other. An output signal (PDI) from the signal processing unit is formed in dependence on the result of said multiplication for the purpose of detecting internal partial discharges in the transformer.

2. 发明公开

EP2279548A1 ARC DETECTOR AND ASSOCIATED METHOD FOR DETECTING UNDESIRED ARCS 有权
标题翻译：电弧检测和方法，了解关于此次ARC通知出现多余的检测中
公开(公告)号：EP2279548A1
公开(公告)日：2011-02-02
申请号：EP09735382.5
申请日：2009-04-21
申请人： ABB Research Ltd.
发明人： ERIKSSON, Thomas , HALÈN, Stefan , HEDBERG, Jonas
IPC分类号： H02H1/00 , H02H7/055
CPC分类号： H02H1/0015 , H02H7/055
摘要： It is presented an arc detector for detecting undesired arcs. The arc detector comprises: an antenna for receiving an electromagnetic signal representing an arc; and a discriminator for analysing a signal from the antenna, the discriminator comprising a spectrum analyser arranged to detect whether the signal represents a normal arc or an undesired arc. The discriminator is arranged to detect whether the signal represents a normal arc or an undesired arc by comparing signal levels at frequencies of a spectrum of the signal corresponding to at least one partial reference spectrum, and determining the arc to be a normal arc if a deviation from the reference spectrum is less than a threshold deviation. A corresponding method is also presented.

3. 发明授权

EP2577699B1 A DC SWITCHING DEVICE 有权
标题翻译： DC控制器
公开(公告)号：EP2577699B1
公开(公告)日：2015-02-25
申请号：EP10721509.7
申请日：2010-05-28
申请人： ABB Research Ltd.
发明人： ERIKSSON, Thomas , BÅNGHAMMAR, Lars
IPC分类号： H01H9/40 , H01H9/44
CPC分类号： H01H33/182 , H01H1/20 , H01H9/36 , H01H9/40 , H01H9/443 , H01H33/08 , H01H33/596 , H01H71/1045

4. 发明公开

EP2057642A1 HIGH VOLTAGE SHIELD 审中-公开
标题翻译：高压保护
公开(公告)号：EP2057642A1
公开(公告)日：2009-05-13
申请号：EP07808855.6
申请日：2007-08-31
申请人： ABB Research Ltd.
发明人： HARTINGS, Ralf , GÄFVERT, Uno , EKEROTH REIJM, Kerstin M. , ERIKSSON, Thomas , LARSSON, Tommy L.
IPC分类号： H01B17/26 , H01B17/44
CPC分类号： H01B17/44
摘要： A high voltage corona shield comprises a body portion made of a polymer material.

5. 发明授权

EP2279548B1 ARC DETECTOR AND ASSOCIATED METHOD FOR DETECTING UNDESIRED ARCS 有权
标题翻译：电弧检测和方法，了解关于此次ARC通知出现多余的检测中
公开(公告)号：EP2279548B1
公开(公告)日：2015-09-16
申请号：EP09735382.5
申请日：2009-04-21
申请人： ABB Research Ltd.
发明人： ERIKSSON, Thomas , HALÈN, Stefan , HEDBERG, Jonas
IPC分类号： H02H1/00 , H02H7/055
CPC分类号： H02H1/0015 , H02H7/055

6. 发明公开

EP2577699A1 A DC SWITCHING DEVICE 有权
标题翻译： DC控制器
公开(公告)号：EP2577699A1
公开(公告)日：2013-04-10
申请号：EP10721509.7
申请日：2010-05-28
申请人： ABB Research Ltd.
发明人： ERIKSSON, Thomas , BÅNGHAMMAR, Lars
IPC分类号： H01H9/40 , H01H9/44
CPC分类号： H01H33/182 , H01H1/20 , H01H9/36 , H01H9/40 , H01H9/443 , H01H33/08 , H01H33/596 , H01H71/1045
摘要： The present invention relates to a DC switching device (2) comprising a plurality of arc-extinguishing chambers (50, 50', 51, 51', 52, 52') and a plurality of contacting units (70, 71, 72) conductively connected in series to each other, each of the contacting units including a stationary contact (61, 61') and a movable contact (32) movable between a rest position and a working position, an air gap is formed between the contacts when the movable contact is moved from the working position to the rest position and each of the chambers (50, 50', 51, 51', 52, 52') enclosing a contacting unit (70, 71, 72) and comprising a splitter plate unit including one or more splitter plates (101-107) arranged for splitting and cooling an arc occurring in the air gap between the contacts. At least one of the chambers (50, 50', 52, 52) includes a permanent magnet (80, 80') for generating a magnetic field between the contacting unit (70, 72) and the splitter plate unit and the splitter plates are made of non-ferromagnetic material, and the splitter plates of at least one of the chambers (51, 51') are made of ferromagnetic material.

7. 发明授权

EP0792465B1 A DEVICE FOR SENSING OF ELECTRIC DISCHARGES IN A TEST OBJECT 失效
标题翻译： VORRICHTUNG ZUR ERFASSUNG ELEKTRISCHER ENTLADUNGEN IN EINEM TESTOBJEKT
公开(公告)号：EP0792465B1
公开(公告)日：2009-07-15
申请号：EP96930483.1
申请日：1996-09-10
申请人： ABB Research Ltd.
发明人： BENGTSSON, Tord , DAHLBERG, Lars-Gunnar , ERIKSSON, Thomas , KHEIRMAND, Akbar , LEIJON, Mats , SIBERG, Henry , RUDOLFSSON, Dick , WINKLER, Dag
IPC分类号： G01R31/12
CPC分类号： G01R31/3333 , G01R15/181 , G01R31/022 , G01R31/12 , G01R31/1227 , G01R31/1245

8. 发明授权

EP0769150B1 MONITORING OF INTERNAL PARTIAL DISCHARGES ON A POWER TRANSFORMER 失效
标题翻译：局部放电的电力变压器监测
公开(公告)号：EP0769150B1
公开(公告)日：2008-03-12
申请号：EP96913760.3
申请日：1996-04-29
申请人： ABB RESEARCH LTD.
发明人： ERIKSSON, Thomas , LEIJON, Mats
IPC分类号： G01R31/02 , G01R31/34
CPC分类号： G01R31/027 , G01R31/1227
摘要： In a method for monitoring of partial discharges in an electric power transformer (1) under normal operating conditions, the magnetic field at a high-voltage bushing (2) on the power transformer is sensed with an inductive sensor (6) comprising at least one coil (6a, 6b) arranged at the bushing, and the electric field at the bushing is sensed with a capacitive sensor (5). The output signals from said sensors are supplied to a signal processing unit (3) in which each one of the output signals is filtered in a separate bandpass filter (101, 102), whereupon the filtered output signals from said sensors are multiplied by each other. An output signal (PDI) from the signal processing unit is formed in dependence on the result of said multiplication for the purpose of detecting internal partial discharges in the transformer.

9. 发明公开

EP1007987A1 A DEVICE FOR SENSING ELECTRIC DISCHARGES IN TEST OBJECT, PREFERABLY A CABLE JOINT 失效
标题翻译： DEVICE FOR TRACKING放电而测试对象，最好是在电缆连接
公开(公告)号：EP1007987A1
公开(公告)日：2000-06-14
申请号：EP98909912.2
申请日：1998-03-09
申请人： ABB Research Ltd.
发明人： ERIKSSON, Thomas , JOHANSSON, Kenneth
IPC分类号： G01R31/12
CPC分类号： G01R31/1272
摘要： A device for sensing electric discharges in a test object (1) with two electric connection conductors (1a, 1b, 1c, 1d), preferably a cable joint, comprises at least one first and one second sensor (2a, 2b) and evaluation equipment (EVU). Each one of the sensors generates and supplies to the evaluation equipment sensor signals in dependence on current pulses through the connection conductors and the direction thereof, the first sensor a first sensor signal (v1) and the second sensor a second sensor signal (v2). The evaluation equipment generates in dependence on received sensor signals an indication signal (IND), indicating an electric discharge in the test object. The device comprises a first tuning unit (T1) associated with the first sensor and a second tuning unit (T2) associated with the second sensor, each unit, in dependence on the respective sensor signal, forming a first filter signal (SF1) and a second filter signal (SF2), respectively, periodically oscillating with a preselected period (TP), as well as a multiplying member (MU), which is supplied with, and in dependence on said filter signals, forms a product signal (SP), whereby the evaluation equipment forms the indication signal in dependence on the product signal.

10. 发明公开

EP0792465A1 A DEVICE FOR SENSING OF ELECTRIC DISCHARGES IN A TEST OBJECT 失效
标题翻译：设备技术传感放电测试物体
公开(公告)号：EP0792465A1
公开(公告)日：1997-09-03
申请号：EP96930483.0
申请日：1996-09-10
申请人： ABB RESEARCH LTD.
发明人： BENGTSSON, Tord , DAHLBERG, Lars-Gunnar , ERIKSSON, Thomas , KHEIRMAND, Akbar , LEIJON, Mats , SIBERG, Henry , RUDOLFSSON, Dick , WINKLER, Dag
IPC分类号： G01R15 , G01R31
CPC分类号： G01R31/3333 , G01R15/181 , G01R31/022 , G01R31/12 , G01R31/1227 , G01R31/1245
摘要： A device for sensing electric discharges in a test object (1) with at least two electric connection conductors (1a, 1b, 1c, 1d) comprises transducer equipment and evaluation equipment (PA, ABU, LU). The transducer equipment comprises at least one transducer (6a, 6b, 6c, 6d) for direction-sensitive sensing of current pulses through the connection conductors by sensing a magnetic field, generated by the current pulses, and the polarity thereof. The transducer delivers a transducer signal (v1', v2', v3', v4', v11', v21') to the evaluation equipment in dependence on said current pulses and their direction. The evaluation equipment generates, in dependence on received transducer signals, an indicating signal (IND) indicating an electric discharge in the test object.

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