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公开(公告)号:WO2005045853B1
公开(公告)日:2005-09-29
申请号:PCT/SE2004001615
申请日:2004-11-05
Applicant: ABB RESEARCH LTD , LIU RONGSHENG , JOHANSSON STEFAN , HOLMGREN BJOERN , VALDEMARSSON STEFAN , LARSSON DAVID , JOHANSSON KENNETH , BENGTSSON TORD , BROSIG GERHARD , JIANG LIN , BORMANN DIERK
Inventor: LIU RONGSHENG , JOHANSSON STEFAN , HOLMGREN BJOERN , VALDEMARSSON STEFAN , LARSSON DAVID , JOHANSSON KENNETH , BENGTSSON TORD , BROSIG GERHARD , JIANG LIN , BORMANN DIERK
CPC classification number: H01B9/027 , H01B7/0291
Abstract: The invention concerns a high voltage transmission wire or cable for transmitting AC or DC power between two points. Preferably at least one point is connected to one or more power networks. The conductor of the wire or cable comprises a semiconducting outer layer (10) including distributed magnetic particles. Other embodiments include an insulation layer (12) including distributed magnetic material, micro-particles, ribbons tapes etc, and an insulation screen. The invention increases the distance over which power may be transmitted and/or eliminates the necessity for power compensation reactors partially or totally. This is achieved by increasing inductance and reducing AC capacitance leakage currents in AC lines and, when operated as a DC line, by reducing high frequency harmonics.
Abstract translation: 本发明涉及用于在两点之间传输AC或DC电力的高压传输线或电缆。 优选地,至少一个点连接到一个或多个电力网络。 电线或电缆的导体包括包括分布磁性颗粒的半导体外层(10)。 其他实施例包括包括分布磁性材料,微粒,带带等的绝缘层(12)和绝缘屏。 本发明增加了可以传输功率的距离和/或部分或全部地消除了功率补偿电抗器的必要性。 这是通过增加交流线路中的电感和减小交流电容漏电流,并通过降低高频谐波作为直流线路来实现的。
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公开(公告)号:ES2439279T3
公开(公告)日:2014-01-22
申请号:ES10195712
申请日:2010-12-17
Applicant: ABB RESEARCH LTD
Inventor: BENGTSSON TORD , ABEYWICKRAMA NILANGA
IPC: G01R31/02
Abstract: Método de diagnóstico de transformador para un transformador (100) que tiene al menos un devanado de carga(105) y un devanado de fuente (110), comprendiendo el método: recoger, (500), en un aparato de diagnóstico de transformador (700) que comprende un procesador (800), durante almenos dos cargas de transformador diferentes, mediciones de una corriente que es indicativa de la carga detransformador, y mediciones de al menos una señal adicional CA de transformador; derivar (503), en el aparato de diagnóstico de transformador a partir de las mediciones recogidas, al menos dos valoresde una cantidad que depende de al menos una propiedad de transformador así como de la carga de transformador; determinar (505), en el aparato de diagnóstico de transformador a partir de los valores derivados, un coeficiente o unconjunto de coeficientes de una relación según la cual se espera que varíe dicha cantidad con la carga detransformador; y caracterizado por que dicha relación se basa en un modelo de transformador en el que se tienen en cuenta los efectos de corrientes demagnetización en el núcleo de transformador, las inductancias de fuga y las resistencias eficaces de los devanadosprimario y secundario; y comprendiendo el método derivar, en el aparato de diagnóstico de transformador usando al menos uno de dichoscoeficientes, el valor de al menos una de las siguientes propiedades de transformador: la impedancia total de devanado,Zw; la impedancia de un devanado de fuente, Z1; la impedancia de un devanado de carga, Z2; una relación de vueltas, n,y la corriente de magnetización, I0; en el que el valor de una propiedad de transformador está relacionado con al menos un parámetro de dicho modelo detransformador.
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公开(公告)号:CA2672403A1
公开(公告)日:2008-07-03
申请号:CA2672403
申请日:2007-12-21
Applicant: ABB RESEARCH LTD
Inventor: BENGTSSON TORD , THORBURN STEFAN
IPC: G01R27/16
Abstract: Arrangement to determine at least one electrical feature of an electrical device (1). The arrangement comprising a signal injection unit (8) configur ed to inject a first test signal (t1) at a first main frequency (f1) into a first electric circuit (10), and to inject a second test signal (t2) at a se cond main frequency (f2) into the first electric circuit (10) or into a seco nd electric circuit (30), a signal conversion unit (7) configured to measure a first and a second electrical quantity in the first electrical circuit re sulting from the first test signal (t1), and to measure the first and second electrical quantity in the first (10) or second electric circuit (30) resul ting from the second test signal (t2),and a processing device (18) including at least two analogue input channels (16,17) configured to receive the meas ured electrical quantities and to determine the electrical feature based on the measured electrical quantities, a mixing unit (13) configured to add the measurements (U1,U2) of the first electrical quantity from the first and se cond testsignals and based thereon generate a first mixed signal, to add the measurements (I1,I2) of the second electrical quantity from the first and s econd test signals and based thereon generate a second mixed signal, to supp ly the first mixed signal to a firstinput channel of the processing device a nd to supply the second mixed signal to a second input channel of the proces sing device. The processing device is configured to decompose the mixed sign als to obtain the measurements of the first and second electrical quantities .
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公开(公告)号:CA2660382A1
公开(公告)日:2008-02-21
申请号:CA2660382
申请日:2007-08-15
Applicant: ABB RESEARCH LTD
Inventor: LINDAHL STURE , BENGTSSON TORD , FULCZYK MAREK , OLGUIN GABRIEL , JOHANSSON STEFAN G
IPC: H02H3/17
Abstract: The present invention relates to a ground fault detection arrangement for a synchronous three-phase electrical machine, and an electrical system comp rising a ground fault detection arrangement and a synchronous three-phase el ectrical machine. The ground fault detection arrangement injects an off-nomi nal frequency voltage between a neutral point of the synchronous three-phase electrical machine and ground and measure resultant currents to detect a gr ound fault.
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公开(公告)号:SE0302966L
公开(公告)日:2005-05-08
申请号:SE0302966
申请日:2003-11-07
Applicant: ABB RESEARCH LTD
Inventor: LIU RONGSHENG , JOHANSSON STEFAN , JOHANSSON KENNETH , HOLMGREN BJOERN , BROSIG GERHARD , JIANG LIN , BORMANN DIERK , VALDEMARSSON STEFAN , BENGTSSON TORD , LARSSON DAVID
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公开(公告)号:CA2248760C
公开(公告)日:2003-06-03
申请号:CA2248760
申请日:1997-03-10
Applicant: ABB RESEARCH LTD
Inventor: MARTINSSON LARS , BENGTSSON TORD , KOLS HAKAN
IPC: H01F29/04 , G01R31/327 , G05F1/14 , G01R31/02
Abstract: A method for monitoring an on-load tap changer wherein the recording of soun d and its conversion into a sound signal are initiated at the beginning of a connection operation of the tap changer and the sound signal is rectified, converted into a signal envelope, sampled digitally and continuously evaluat ed with respect to the condition of the tap changer by comparing the envelope with at least one fixed or one continuously updated reference envelope. The comparison is carried out selectively by calculating a dimensionless comparison figure Ti which is based on a quantity measure and a variation measure.
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公开(公告)号:SE510450C2
公开(公告)日:1999-05-25
申请号:SE9600932
申请日:1996-03-11
Applicant: ABB RESEARCH LTD
Inventor: BENGTSSON TORD , KOLS HAAKAN , MARTINSSON LARS
IPC: H01F29/04 , G01R31/327 , G05F1/14
Abstract: PCT No. PCT/SE97/00402 Sec. 371 Date Nov. 12, 1998 Sec. 102(e) Date Nov. 12, 1998 PCT Filed Mar. 10, 1997 PCT Pub. No. WO97/34161 PCT Pub. Date Sep. 18, 1997A method for monitoring an on-load tap changer wherein the recording of sound and its conversion into a sound signal are initiated at the beginning of a connection operation of the tap changer and the sound signal is rectified, converted into a signal envelope, sampled digitally and continuously evaluated with respect to the condition of the tap changer by comparing the envelope with at least one fixed or one continuously updated reference envelope. The comparison is carried out selectively by calculating a dimensionless comparison figure Ti which is based on a quantity measure and a variation measure.
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公开(公告)号:PE50298A1
公开(公告)日:1998-09-08
申请号:PE00090396
申请日:1996-12-12
Applicant: ABB RESEARCH LTD
Inventor: RUDOLFSSON DICK , WINKLER DAG , SIBERGV HENRY , BENGTSSON TORD , DAHLBERG LARS-GUNNAR , ERIKSSON THOMAS , KHEIRMAND AKBAR , LEIJON MATS
IPC: G01R31/02 , G01R15/18 , G01R31/12 , G01R31/333
Abstract: SIENDO UN OBJETO DE PRUEBAS ESTA PROVISTO POR LO MENOS DE DOS CONDUCTORES DE CONEXION ELECTRICA, Y COMPRENDE: A) UN EQUIPO TRANSDUCTOR Y B) UN EQUIPO DE EVALUACION, EL PRIMERO ESTA COMPUESTO POR LO MENOS DE UN TRANSDUCTOR PARA LA DETECCION DE IMPULSOS DE CORRIENTE QUE PASAN POR LOS CONDUCTORES DE CONEXION DETECTANDO UN CAMPO MAGNETICO GENERADO POR LOS IMPULSOS DE CORRIENTE Y SU POLARIDAD, TRANSMITIENDO EL REFERIDO TRASDUCTOR O TRANDUCTORES UNA SENAL TRANSDUCTIVA AL EQUIPO DE EVALUACION, SE CARACTERIZA PORQUE EL EQUIPO DE EVALUACION, DEPENDIENDO DE LAS SENALES TRANSDUCTIVAS RECIBIDAS, GENERA UNA SENAL DE INDICACION QUE INDICA UNA DESCARGA ELECTRICA EN EL OBJETO DE PRUEBAS, CUANDO EL EQUIPO TRANSDUCTOR DETECTA IMPULSOS DE CORRIENTE QUE FLUYEN EN ESENCIA SIMULTANEAMENTE BIEN SEA UNA DIRECCION HACIA AFUERA DEL OBJETO DE PRUEBAS A TRAVES DE LOS CONDUCTORES DE CONEXION O EN UNA DIRECCION HACIA EL INTERIOR DEL OBJETO DE PRUEBAS A TRAVES DE LOS CONDUCTORES DE CONEXION O EN UNA DIRECCION HACIA EL INTERIOR DEL OBJETO DE PRUEBAS A TRAVES DE TODOS LOS CONDUCTORES DE CONEXION
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公开(公告)号:NO972194D0
公开(公告)日:1997-05-13
申请号:NO972194
申请日:1997-05-13
Applicant: ABB RESEARCH LTD
Inventor: BENGTSSON TORD , DAHLBERG LARS-GUNNAR , ERIKSSON THOMAS , KHEIRMAND AKBAR , LEIJON MATS , SIBERG HENRY , RUDOLFSSON DICK , WINKLER DAG
IPC: G01R15/18 , G01R31/02 , G01R31/12 , G01R31/333
Abstract: PCT No. PCT/SE96/01126 Sec. 371 Date May 12, 1997 Sec. 102(e) Date May 12, 1997 PCT Filed Sep. 10, 1996 PCT Pub. No. WO97/10515 PCT Pub. Date Mar. 20, 1997A device for sensing electric discharges in a test object with at least two electric connection conductors comprises transducer equipment and evaluation equipment. The transducer equipment comprises at least one transducer 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 to the evaluation equipment in dependence on said current pulses and their direction. The evaluation equipment generates, in dependence on received transducer signals, an indicated signal indicating an electric discharge in the test object.
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公开(公告)号:BR112013014847A2
公开(公告)日:2016-10-18
申请号:BR112013014847
申请日:2011-11-17
Applicant: ABB RESEARCH LTD
Inventor: ABEYWICKRAMA NILANGA , BENGTSSON TORD
IPC: G01R31/02
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