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公开(公告)号：US20230099025A1
公开(公告)日：2023-03-30
申请号：US17491410
申请日：2021-09-30
发明人： Srinivas VARADAN , William RUTZ
摘要： Resource-constrained, multi-period scheduling model for asset investment planning. In an embodiment, asset-related tasks for physical equipment are received, along with a time window. Each of the asset-related tasks is associated with parameter values for each time period within the time window. A resource-constrained project scheduling model is executed to identify an optimal portfolio of the asset-related tasks that satisfies a set of constraints, according to an objective, based on the parameter values for the asset-related tasks. In the optimal portfolio, each asset-related task is assigned to a time span comprising one or more time periods in the time window. The optimal portfolio may then be used to schedule the asset-related tasks in the optimal portfolio, in order to facilitate repair, maintenance, and capital tasks, for example, by automatically dispatching work orders or resources, automatically configuring a state of the physical equipment, informing an asset management system, and/or the like.
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公开(公告)号：US20220148826A1
公开(公告)日：2022-05-12
申请号：US17614657
申请日：2020-05-18
发明人： Bengt-Olof STENESTAM , Lars JONSSON
IPC分类号： H01H9/00 , G01R31/333
摘要： The present invention relates to a method and a monitoring system, for monitoring a vacuum on-load tap changer. The tap changer includes a housing with insulating fluid, a diverter switch inside of the housing and including at least one movable contact and at least two vacuum interrupters, and at least one pressure sensor which measures the pressure in the housing. The method, which is performed by a processing circuitry in the system, includes determining a pressure signature, including two succeeding peaks within a time interval, continuously measuring the pressure, detecting when the measured pressure shows the pressure signature, determining, based on the measured pressure within the pressure signature, the time between the first rise in pressure and the second drop, and setting the determined time to represent the switch time of the diverter switch.
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公开(公告)号：US20220148786A1
公开(公告)日：2022-05-12
申请号：US17438424
申请日：2020-03-10
发明人： Yong WANG , Jens TEPPER , Jiahua WENG
摘要： An arrangement to cool a coil, comprising an enclosure, which at least partially incorporates or houses the coil, and a device to create an airflow to cool the coil, wherein the coil comprises at least one cooling channel to guide the airflow through the windings of the coil and an outer air duct lying radially in the outer circumference area of the coil or lying radially inside below an outer part of the coil, characterized in that an air guidance plate is placed at or near one longitudinal end of the outer air duct and/or of the coil to prevent bypasses of the airflow and/or to block at least partially the airflow through and/or along the outer air duct, achieves the object to cool a coil, especially a coil of a transformer, in an efficient manner using space-saving means.
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公开(公告)号：US20220102058A1
公开(公告)日：2022-03-31
申请号：US17488577
申请日：2021-09-29
发明人： Ion Radu , Parag Upadhyay , Alberto Prieto
IPC分类号： H01F27/28 , H01F41/063
摘要： A split winding assembly for a transformer is configured to extend along a main limb of a transformer core between a first end and a second end. The split winding assembly includes a first split winding section extending from the first end toward a midpoint of the split winding assembly and a second split winding section extending from the second end toward the midpoint of the split winding assembly along the main limb of a transformer core. The first split winding section includes a first inner winding section configured to surround the main limb of the transformer core and a first outer winding section surrounding the first inner winding section. The second split winding section includes a second inner winding section configured to surround the main limb of the transformer core and a second outer winding section surrounding the second inner winding section.
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公开(公告)号：US20220102049A1
公开(公告)日：2022-03-31
申请号：US17436363
申请日：2020-03-05
发明人： Stephane Isler , Valter Porcellato
摘要： A transformer assembly includes an electric transformer a temperature sensor system, and a computation unit for determining a thermal state of the electric transformer. The electric transformer includes a cooling device having at least one liquid coolant channel absorb exhaust heat from the electric transformer a heat spreader for transferring heat from the liquid coolant to a heat dissipation surface of the heat spreader, and an air blower configured to effect an airstream along the heat dissipation surface. The temperature sensor system includes an entering coolant sensor for providing an entering coolant temperature signal, a leaving coolant sensor for providing a leaving coolant temperature signal, an entering airstream sensor for providing an entering airstream temperature signal, and a leaving airstream sensor for providing a leaving airstream temperature signal. The computation unit is configured to determine a thermal state of the transformer.
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公开(公告)号：US20220059297A1
公开(公告)日：2022-02-24
申请号：US17404287
申请日：2021-08-17
发明人： Jakub Korbel , Matt Cuppett , Brian Christopher , Richard Thomas , Sami Kotilainen , Staffan Jacobsson , Benny Wedin , Francesco Agostini
IPC分类号： H01H3/38
摘要： Provided is a spring drive cam for a spring drive of a circuit breaker including a disc-like shape configured for rotating around a rotation axis in the spring drive, whereby the disc-like shape comprises a radius (R) that changes depending on an angle (α) of the radius (R) relative to a base angle (α0), and whereby a rate (dR/dα) defined by a change of the radius (R) per change of the angle (α) is ≤0.3 mm/°.
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7.发明申请公开(公告)号：US20220035985A1
公开(公告)日：2022-02-03
申请号：US17311785
申请日：2019-12-09
发明人： Alessandro Zanarini , Jan Poland , Philippe Stefanutti , Harry Zueger , Thomas Hertwig , Raphael Kegelin , Ming Zhang
IPC分类号： G06F30/394 , G06F30/392 , G06F30/398
摘要： To determine a three-dimensional layout of electrical connections of an electric component, a processor executes a path optimization routine to determine three-dimensional routes for a plurality of electrical connections of the electric component. A conflict management is performed to generate conflict-free three-dimensional routes for the plurality of electrical connections.
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公开(公告)号：US20220013273A1
公开(公告)日：2022-01-13
申请号：US17293626
申请日：2019-11-13
摘要： A transformer tank for a shell form transformer, for housing an active part of a three-phase transformer including transformer phases is provided. The tank includes a bottom tank part and a medium tank part comprising bottom plate and walls, a cover plate, reinforcing beams joined to the walls, interphase plates and stiffening supports for strengthening the cover plate. The interphase plates are to be arranged in a lower space of the tank, between adjacent transformer phases, extending from one wall to an opposite wall of the tank and coupled to the reinforcing beams. Each stiffening support is to be coupled to an interphase plate and extends in an upper space of the tank between the interphase plate and the cover plate, to cooperate with the cover plate. A three-phase shell form transformer and a method to assemble the transformer are also provided.
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公开(公告)号：US20220006208A1
公开(公告)日：2022-01-06
申请号：US17288895
申请日：2019-09-18
发明人： Björn Edberg , Thomas Eriksson , Peter Sjöberg
摘要： A condenser core for being positioned around a high voltage main electrical conductor, the condenser core including an electrically insulating body; a longitudinal through hole for accommodating the main electrical conductor; a plurality of electrically conductive foils encircling the through hole and being surrounded by the body such that each foil is insulated from any other of the foils; a potential electrical conductor for establishing an electrical connection between one of the foils and the main electrical conductor when the main electrical conductor is accommodated in the through hole; and a fastening device configured to mechanically connect the potential electrical conductor to the main electrical conductor when the main electrical conductor is accommodated in the through hole. A bushing, a high voltage application and a method of producing a bushing are also provided.
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公开(公告)号：US20210389358A1
公开(公告)日：2021-12-16
申请号：US17292201
申请日：2019-10-02
发明人： Nilanga ABEYWICKRAMA
IPC分类号： G01R27/26
摘要： The present invention relates to a method and monitoring device, for monitoring N number of transformer bushings operating in substantially the same environment. N being any number more than 1. The method comprises estimating an absolute value for the capacitances of each of the bushings, the absolute values for the capacitances being denoted Cx, and estimating an absolute value for the loss factor or the power factor of each of the bushings, the absolute values for the loss factors or the power factors being denoted Fx. X is a number representing which bushing the value is associated to and X larger than 1. The method further comprises calculating Δ-values for all C values and Δ-values for all F values, according to: ΔCX=CX−CX+1, for all values up to, and including, ΔCN−1, ΔCN=CN−C1, for ΔCN, ΔFX=FX−FX+1, for all values up to, and including, ΔFN−1, ΔFN=FN−F1, for ΔFN, and determining whether the Δ-values are within predefined ranges.
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