| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 101 | Arrester with external isolator | US394523 | 1989-08-16 | US4975797A | 1990-12-04 | Edward F. Veverka; Gary L. Goedde; Stanley S. Kershaw |
| An arrester for an under oil transformer is connected between a primary bushing lead and an insulator/isolator penetrating the wall of a housing which encloses the oil, arrester, and transformer parts. A ground wire outside the housing is removably connected to the isolator which functions as a circuit disconnector. The ground wire is removed to open circuit the arrester so that the transformer may be tested without having to disable any parts in the housing. Responsive to an arrester failure, the ground wire is blown away to give a visual indication of the failure. The blowing away of the ground wire eliminates the need for the arrester to fail in an open circuit condition. | ||||||
| 102 | Fault current limiter | US14406824 | 2012-06-12 | US09595380B2 | 2017-03-14 | Eoin Patrick Hodge; Francis Anthony Darmann |
| A fault current limiter of the type having at least one elongated core biased magnetically towards saturation by means of a surrounding magnetic field, and an AC coil surrounding the core, the fault current limiter including: an elongated core having a variable cross section along the axis of the core in the vicinity of the AC coil, providing increased saturation of the core and enhanced fault current limiting for a lower DC bias. | ||||||
| 103 | Fault current limiter | US14239131 | 2012-08-17 | US09509135B2 | 2016-11-29 | Robert Wilson; Mohinder Pannu |
| A fault current limiter is provided that comprises a magnetically saturable core. The first core includes a first leg, a second leg, with a first AC coil wound on the second leg, a third leg, with a second AC coil wound around the third leg, the first and second AC coils being wound in series and connected to a first phase AC source, and a fourth leg. The first magnetic biasing unit is arranged to produce a first closed magnetic circuit in the first leg and the second leg that has a first flux direction, and the second coil is arranged to produce a second closed magnetic circuit in the fourth leg and the third leg that has a second flux direction, wherein the first flux direction opposes the second flux direction. The first and second AC coils are arranged to produce a first closed AC magnetic circuit in the second and third legs in an AC flux direction that alternates with each AC half-cycle. | ||||||
| 104 | FAULT CURRENT LIMITER | US14406824 | 2012-06-12 | US20150248962A1 | 2015-09-03 | Eoin Patrick Hodge; Francis Anthony Darmann |
| A fault current limiter of the type having at least one elongated core biased magnetically towards saturation by means of a surrounding magnetic field, and an AC coil surrounding the core, the fault current limiter including: an elongated core having a variable cross section along the axis of the core in the vicinity of the AC coil, providing increased saturation of the core and enhanced fault current limiting for a lower DC bias. | ||||||
| 105 | FAULT CURRENT LIMITER | US14239131 | 2012-08-17 | US20140254056A1 | 2014-09-11 | Robert Wilson; Mohinder Pannu |
| A fault current limiter is provided that comprises a magnetically saturable core. The first core includes a first leg, a second leg, with a first AC coil wound on the second leg, a third leg, with a second AC coil wound around the third leg, the first and second AC coils being wound in series and connected to a first phase AC source, and a fourth leg. The first magnetic biasing unit is arranged to produce a first closed magnetic circuit in the first leg and the second leg that has a first flux direction, and the second coil is arranged to produce a second closed magnetic circuit in the fourth leg and the third leg that has a second flux direction, wherein the first flux direction opposes the second flux direction. The first and second AC coils are arranged to produce a first closed AC magnetic circuit in the second and third legs in an AC flux direction that alternates with each AC half-cycle. | ||||||
| 106 | Inductive fault current limiter with divided primary coil configuration | US14037432 | 2013-09-26 | US20140098451A1 | 2014-04-10 | Klaus Schlenga; Alexander Usoskin |
| An inductive fault current limiter (1) has a normally conducting primary coil assembly (2) with a multiplicity of turns (3) and a superconducting, short-circuited secondary coil assembly (4), wherein the primary coil assembly (2) and the secondary coil assembly (4) are at least substantially coaxial with respect to each other and at least partially interleaved in each other. The primary coil assembly (2) has a first coil section (2a) and a second coil section (2b), wherein the turns (3) of the first coil section (2a) of the primary coil assembly (2) are disposed radially inside the secondary coil assembly (4) and the turns (3) of the second coil section (2b) of the primary coil assembly (2) are disposed radially outside the secondary coil assembly (4). The fault current limiter has an increased inductance ratio. | ||||||
| 107 | CURRENT-RISE LIMITATION IN HIGH-VOLTAGE DC SYSTEMS | US14017876 | 2013-09-04 | US20140005053A1 | 2014-01-02 | Christian Schacherer; Markus Abplanalp; Markus Bujotzek; Emmanouil Panousis |
| To limit current rise in a high voltage DC system, the current can be led through a current rise limiter. An exemplary current rise limiter can have an inductance that increases with the current I through the current rise limiter and/or with a time-derivative dI/dt of the current I. In such a system, the current rise limiter can have minor influence on normal operation, but can limit the rise rate of the current in the event of a fault to, for example, provide more time to switch off the current. | ||||||
| 108 | Superconducting fault current limiter | US13618223 | 2012-09-14 | US08600464B2 | 2013-12-03 | Huw L. Edwards; Christopher G. Bright; Stephen M. Husband |
| This invention relates to a superconducting fault current limiter, including: an input segment of an input transformer core and an output segment of an output transformer, each segment having a first end and a second end; a length of superconductor which forms a winding around the input segment and a winding around output segment, wherein the windings are connected in series to form a closed loop; a cryostat in which the superconductor is housed; wherein each end of the input and output segments are exposed to the exterior of the cryostat. | ||||||
| 109 | Core-saturated superconductive fault current limiter and control method of the fault current limiter | US12596645 | 2008-04-17 | US08582255B2 | 2013-11-12 | Ying Xin; Weizhi Gong; Xiaoye Niu; Zhengjian Cao |
| A core-saturated superconductive fault current limiter and a control method of the fault current limiter. The fault current limiter includes a superconductive magnet (2), a core (4), an AC winding (5), a cryostat system, a monitor system (7) and a DC control system (6). The output of the DC control system (6) is connected to the two terminals of the superconductive magnet (2). The DC control system (6) is also connected to the monitor system (7). The core (4) has an unequal section core structure. The control method includes: controlling the current which is flowing through the superconductive magnet (2) for limiting the fault current in the power net (1) in the case of a short circuit fault event. | ||||||
| 110 | Fault current limiter with shield and adjacent cores | US13020323 | 2011-02-03 | US08564921B2 | 2013-10-22 | Francis Anthony Darmann; Franco Moriconi; Eoin Patrick Hodge |
| In a fault current limiter (FCL) of a saturated core type having at least one coil wound around a high permeability material, a method of suppressing the time derivative of the fault current at the zero current point includes the following step: utilizing an electromagnetic screen or shield around the AC coil to suppress the time derivative current levels during zero current conditions. | ||||||
| 111 | Fault current limiter | US13215647 | 2011-08-23 | US08553384B2 | 2013-10-08 | Francis Anthony Darmann |
| A fault current limiter (FCL) includes a series of high permeability posts for collectively define a core for the FCL. A DC coil, for the purposes of saturating a portion of the high permeability posts, surrounds the complete structure outside of an enclosure in the form of a vessel. The vessel contains a dielectric insulation medium. AC coils, for transporting AC current, are wound on insulating formers and electrically interconnected to each other in a manner such that the senses of the magnetic field produced by each AC coil in the corresponding high permeability core are opposing. There are insulation barriers between phases to improve dielectric withstand properties of the dielectric medium. | ||||||
| 112 | SUPERCONDUCTING FAULT CURRENT LIMITER | US13618223 | 2012-09-14 | US20130090243A1 | 2013-04-11 | Huw L. EDWARDS; Christopher G. BRIGHT; Stephen M. HUSBAND |
| This invention relates to a superconducting fault current limiter, including: an input segment of an input transformer core and an output segment of an output transformer, each segment having a first end and a second end; a length of superconductor which forms a winding around the input segment and a winding around output segment, wherein the windings are connected in series to form a closed loop; a cryostat in which the superconductor is housed; wherein each end of the input and output segments are exposed to the exterior of the cryostat. | ||||||
| 113 | Method for current conditioning, in particular on a fault current limiter | US12923322 | 2010-09-15 | US08411401B2 | 2013-04-02 | Alexander Usoskin; Hans-Udo Klein |
| A method for current conditioning, comprising transporting a primary current (1) through a primary coil (2), coupling a secondary coil (3) to the primary coil (2) via a common magnetic flux, wherein the secondary coil (3) comprises a superconductor capable of quenching, with the quenching causing a transition of the superconductor from a low resistance superconducting state to a high resistance quenched state, and in the low resistance superconducting state of the secondary coil (3), guiding a major fraction (8) of the common magnetic flux of the primary coil (2) and the secondary coil (3) within a ferromagnetic medium (5a), is characterized by upon quenching, switching the common magnetic flux such that a major fraction (17) of the common magnetic flux is guided outside the ferromagnetic medium (5a) in the high resistance quenched state of the superconductor. An economic and efficient method for current conditioning is thereby provided which reduces harmonic distortions. | ||||||
| 114 | DEVICE FOR LIMITING CURRENT HAVING VARIABLE COIL IMPEDANCE | US13577272 | 2010-12-21 | US20120306606A1 | 2012-12-06 | Mathias Noe; Christian Schacherer |
| A device for limiting current with variable coil impedance includes a choke coil and a cooling device. An additional coil is made of a high-temperature superconducting material and is disposed in the choke coil such that the current is limited by the device without using an iron core. | ||||||
| 115 | Apparatus for quench protection and stabilizing decay in a quasi-persistent superconducting magnet | US12525025 | 2008-02-29 | US08154830B2 | 2012-04-10 | Graham Gilgrass; M'Hamed Lakrimi; Adrian Mark Thomas |
| A superconducting magnet assembly comprises a superconducting magnet which, under working conditions, generates a magnetic field in a working volume. The superconducting magnet is connected in parallel with a series combination of a superconducting fault current limiter and a resistor, and with a DC power source. Under working conditions, the magnet can be energized by the power source to generate a desired magnetic field in the working volume. | ||||||
| 116 | Fault Current Limiter | US13215647 | 2011-08-23 | US20120040839A1 | 2012-02-16 | Francis Anthony Darmann |
| A fault current limiter (FCL) includes a series of high permeability posts for collectively define a core for the FCL. A DC coil, for the purposes of saturating a portion of the high permeability posts, surrounds the complete structure outside of an enclosure in the form of a vessel. The vessel contains a dielectric insulation medium. AC coils, for transporting AC current, are wound on insulating formers and electrically interconnected to each other in a manner such that the senses of the magnetic field produced by each AC coil in the corresponding high permeability core are opposing. There are insulation barriers between phases to improve dielectric withstand properties of the dielectric medium. | ||||||
| 117 | Fault current limiter | US12866321 | 2009-04-03 | US08027135B2 | 2011-09-27 | Francis Anthony Darmann |
| A fault current limiter (FCL) includes a series of high permeability posts (1) for collectively define a core for the FCL. A DC coil (2), for the purposes of saturating a portion of the high permeability posts (1), surrounds the complete structure outside of an enclosure in the form of a vessel (3). The vessel (3) contains a dielectric insulation medium (4). AC coils (5), for transporting AC current, are wound on insulating formers (6) and electrically interconnected to each other in a manner such that the senses of the magnetic field produced by each AC coil (5) in the corresponding high permeability core are opposing. There are insulation barriers (7) between phases to improve dielectric withstand properties of the dielectric medium. | ||||||
| 118 | COOLING ARRANGEMENT FOR AN ELECTRICAL CONNECTOR FOR A SUPERCONDUCTOR | US12992606 | 2009-05-18 | US20110061851A1 | 2011-03-17 | Stephen M. Husband; Alexander C. Smith; Stephen M. Harrison |
| A cooling arrangement for an electrical connector for a superconductor including at least one superconductor arranged in a container and the container is arranged in a vacuum chamber. A cryocooler is thermally connected to the container to cool the container and the contents of the container including the superconductor. The electrical connector extends through the vacuum chamber and the container to the at least one superconductor. The electrical connector has a thermally conducting and electrically insulating arrangement. The thermally conducting and electrically insulating arrangement comprises an electrically insulating member contacting the electrical connector. A thermally conducting member contacts the electrically insulating member and the thermally conducting member is thermally connected to the to cool the electrical connector. | ||||||
| 119 | Fault Current Limiter | US12664558 | 2007-07-09 | US20100188786A1 | 2010-07-29 | Francis Anthony Darmann |
| A method is for suppressing induced steady state and transient currents and voltages in the DC circuit and coil of a magnetically saturated core fault current limiter. The method includes the steps of: (a) providing a first current coil connected to a DC power source surrounding the core for magnetically saturating the core; and (b) providing a second resistive current coil surrounding the core and either short circuited or interconnected to the DC power source in parallel to the first current coil and wound around the core in a forward or reverse sense to the first current coil. | ||||||
| 120 | Apparatus for Quench Protection and Stabilizing Decay in a Quasi-persistent Superconducting Magnet | US12525025 | 2008-02-29 | US20100073115A1 | 2010-03-25 | Graham Gilgrass; M'Hamed Lakrimi; Adrian Mark Thomas |
| A superconducting magnet assembly comprising a superconducting magnet (1) which, under working conditions, generates a magnetic field in a working volume, the superconducting magnet being connected in parallel with a series combination of a superconducting fault current limiter (7) and a resistor (5). The magnet is further connected in parallel to a DC power source (4) whereby under working conditions, the magnet can be energised by the power source to generate a desired magnetic field in the working volume. | ||||||
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