Patents by Inventor Enrico Ragaini
Enrico Ragaini has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20220341992Abstract: Described herein is a method for determining a presence of anomalous conditions in a switching apparatus installed in an electric line of an electric power distribution grid. The method includes a sequence of steps for adjusting a lumped-parameter model describing, for each electric phase, the behavior of the switching apparatus during the opening maneuvers of the switching apparatus. Simulation values provided by the lumped-parameter model are used for calculating estimation values indicative of the amounts of arc energy released by the breaking components of the switching apparatus during the opening maneuvers of the switching apparatus.Type: ApplicationFiled: April 6, 2022Publication date: October 27, 2022Inventors: Pierantonio Arrighetti, Enrico Ragaini
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Patent number: 11451042Abstract: A method for identifying a fault event in an electric power distribution grid sector including one or more electric loads and having a coupling node with a main grid, at which a grid current adsorbed by said electric loads is detectable. The method allows determining whether a detected anomalous variation of the grid current, adsorbed at the electric coupling node, is due to the start of a characteristic transitional operating period of an electric load or is due to an electric fault.Type: GrantFiled: April 24, 2018Date of Patent: September 20, 2022Assignee: ABB S.PA.Inventors: Enrico Ragaini, Daniele Angelosante, Lorenzo Fagiano
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Patent number: 10527657Abstract: An electrical quantity measuring system includes an electrical circuit of an electrical distribution network and an electrical quantity measuring apparatus. The apparatus includes a synchronization module structured to generate a synchronization signal; and a first measurement apparatus connectable to an electrical circuit and structured to receive the synchronization signal and provide a first Fourier transform coefficients representing a first electrical quantity associated with the electrical circuit and a first delay value depending on a time offset between a measurement instant associated with the measure of the first electrical quantity and a reception instant of the synchronization signal at the first measurement apparatus. The measuring apparatus also comprises a processing module structured to process the first Fourier transform coefficients and the first delay value and provide first time-shifted Fourier transform coefficients representing a first synchronized measured electrical quantity.Type: GrantFiled: April 30, 2018Date of Patent: January 7, 2020Assignee: ABB S.P.A.Inventors: Enrico Ragaini, Emilio Locatelli
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Patent number: 10424926Abstract: Method for controlling an electric power distribution micro-grid, the micro-grid comprising: an electric coupling node that said micro-grid is electrically disconnectable from an electric power distribution main grid; one or more electric loads, each consuming a corresponding amount of electric power provided by the micro-grid, the electric loads including one or more disconnectable loads electrically disconnectable from the micro-grid; and at least an electric power source including one or more electric power generators.Type: GrantFiled: December 5, 2017Date of Patent: September 24, 2019Assignee: ABB S.p.A.Inventors: Antonio Fidigatti, Enrico Ragaini, Fabio Monachesi, Fabio D'Agostino, Federico Silvestro
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Patent number: 10352985Abstract: The invention relates to a method (100) for detecting faults in a LVDC electric line (500) characterized in that it comprises the following steps: acquiring (101) a first detection signal (VLOW) indicative of low-frequency components of an unbalancing current (IG) between a plurality of conductors of said electric line, said first detection signal being obtained by means of a low-pass filtering of a corresponding measuring signal (VM1) indicative of said unbalancing current; acquiring (102) a second detection signal (VHIGH) indicative of high-frequency components of an unbalancing current (IG) between a plurality of conductors of said electric line, said second detection signal being obtained by means of a high-pass filtering of a corresponding measuring signal (VM2) indicative of said unbalancing current; obtaining (103) a third detection signal (RT) by calculating the ratio between said first and second detection signals (VLOW, VHIGH); checking (104) whether a DC current (IF) is present by comparing saidType: GrantFiled: August 4, 2016Date of Patent: July 16, 2019Assignee: ABB S.P.A.Inventors: Enrico Ragaini, Marco Carminati
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Publication number: 20180316176Abstract: A method for identifying a fault event in an electric power distribution grid sector including one or more electric loads and having a coupling node with a main grid, at which a grid current adsorbed by said electric loads is detectable. The method allows determining whether a detected anomalous variation of the grid current, adsorbed at the electric coupling node, is due to the start of a characteristic transitional operating period of an electric load or is due to an electric fault.Type: ApplicationFiled: April 24, 2018Publication date: November 1, 2018Inventors: Enrico Ragaini, Daniele Angelosante, Lorenzo Fagiano
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Publication number: 20180246149Abstract: An electrical quantity measuring system includes an electrical circuit of an electrical distribution network and an electrical quantity measuring apparatus. The apparatus includes a synchronization module structured to generate a synchronization signal; and a first measurement apparatus connectable to an electrical circuit and structured to receive the synchronization signal and provide a first Fourier transform coefficients representing a first electrical quantity associated with the electrical circuit and a first delay value depending on a time offset between a measurement instant associated with the measure of the first electrical quantity and a reception instant of the synchronization signal at the first measurement apparatus. The measuring apparatus also comprises a processing module structured to process the first Fourier transform coefficients and the first delay value and provide first time-shifted Fourier transform coefficients representing a first synchronized measured electrical quantity.Type: ApplicationFiled: April 30, 2018Publication date: August 30, 2018Inventors: Enrico Ragaini, Emilio Locatelli
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Publication number: 20180159327Abstract: Method for controlling an electric power distribution micro-grid, the micro-grid comprising: an electric coupling node that said micro-grid is electrically disconnectable from an electric power distribution main grid; one or more electric loads, each consuming a corresponding amount of electric power provided by the micro-grid, the electric loads including one or more disconnectable loads electrically disconnectable from the micro-grid; and at least an electric power source including one or more electric power generators.Type: ApplicationFiled: December 5, 2017Publication date: June 7, 2018Inventors: Antonio Fidigatti, Enrico Ragaini, Fabio Monachesi, Fabio D'Agostino, Federico Silvestro
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Patent number: 9887531Abstract: Method of protecting a distribution network with a line interconnecting busbars, each busbar being connectable, by means of switching devices adjacent to the busbar, to the line and to loads and/or generators. The method divides the distribution network in multiple protection areas, each comprises a busbar, a protection device and an area controller. Upon a change in connect status of a distribution feeder line, load or generator connectable to one of the busbar, the logic controller in this protection area re-calculates the short circuit level of the areas. Based on the recalculated short circuit levels, the protection settings of the areas may be adapted. The embodiment also provides a system and computer program product adapted to perform the method.Type: GrantFiled: April 30, 2014Date of Patent: February 6, 2018Assignee: ABB Research LTDInventors: Alexandre Oudalov, Antonio Fidigatti, Dmitry Ishchenko, Enrico Ragaini, James Stoupis, Luca Milani
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Patent number: 9787095Abstract: The invention relates to a method for managing the load profile of a low or medium voltage electric network that is supplied by at least an electric power source. The electric network comprises one or more electric loads and one or more controllable switching devices for disconnecting/connecting said electric loads from/with said electric power source. The method comprises the step of measuring a time window from a reference instant, the step of determining at least a check instant comprised in said time window and the step of executing a load profile control procedure at said check instant. In a further aspect, the invention relates to a control system for executing the above described method.Type: GrantFiled: March 15, 2012Date of Patent: October 10, 2017Assignee: ABB S.p.A.Inventors: Enrico Ragaini, Antonio Fidigatti, Federico Silvestro, Andrea Morini, Alessandro De Danieli
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Publication number: 20170038423Abstract: The invention relates to a method (100) for detecting faults in a LVDC electric line (500) characterised in that it comprises the following steps: acquiring (101) a first detection signal (VLOW) indicative of low-frequency components of an unbalancing current (IG) between a plurality of conductors of said electric line, said first detection signal being obtained by means of a low-pass filtering of a corresponding measuring signal (VM1) indicative of said unbalancing current; acquiring (102) a second detection signal (VHIGH) indicative of high-frequency components of an unbalancing current (IG) between a plurality of conductors of said electric line, said second detection signal being obtained by means of a high-pass filtering of a corresponding measuring signal (VM2) indicative of said unbalancing current; obtaining (103) a third detection signal (RT) by calculating the ratio between said first and second detection signals (VLOW, VHIGH); checking (104) whether a DC current (IF) is present by comparing saidType: ApplicationFiled: August 4, 2016Publication date: February 9, 2017Inventors: Enrico RAGAINI, Marco CARMINATI
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Publication number: 20160223599Abstract: Electrical quantity measuring apparatus, comprising: a synchronization module structured to generate a synchronization signal; and a first measurement apparatus connectable to an electrical circuit and structured to receive the synchronization signal and provide a first Fourier transform coefficients representing a first electrical quantity associated with the electrical circuit and a first delay value depending on a time offset between a measurement instant associated with the measure of the first electrical quantity and a reception instant of the synchronization signal at the first measurement apparatus. The measuring apparatus also comprises a processing module structured to process the first Fourier transform coefficients and the first delay value and provide first time-shifted Fourier transform coefficients representing a first synchronized measured electrical quantity.Type: ApplicationFiled: January 19, 2016Publication date: August 4, 2016Inventors: Enrico Ragaini, Emilio Locatelli
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Publication number: 20160190790Abstract: Method of protecting a distribution network with a line interconnecting busbars, each busbar being connectable, by means of switching devices adjacent to the busbar, to the line and to loads and/or generators. The method divides the distribution network in multiple protection areas, each comprises a busbar, a protection device and an area controller. Upon a change in connect status of a distribution feeder line, load or generator connectable to one of the busbar, the logic controller in this protection area re-calculates the short circuit level of the areas. Based on the recalculated short circuit levels, the protection settings of the areas may be adapted. The embodiment also provides a system and computer program product adapted to perform the method.Type: ApplicationFiled: April 30, 2014Publication date: June 30, 2016Inventors: Alexandre OUDALOV, Antonio FIDIGATTI, Dmitry ISHCHENKO, Enrico RAGAINI, James STOUPIS, Luca MILANI
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Publication number: 20150028671Abstract: The invention relates to a method for managing the load profile of a low or medium voltage electric network that is supplied by at least an electric power source. The electric network comprises one or more electric loads and one or more controllable switching devices for disconnecting/connecting said electric loads from/with said electric power source. The method comprises the step of measuring a time window from a reference instant, the step of determining at least a check instant comprised in said time window and the step of executing a load profile control procedure at said check instant. In a further aspect, the invention relates to a control system for executing the above described method.Type: ApplicationFiled: March 15, 2012Publication date: January 29, 2015Applicant: ABB S.p.A.Inventors: Enrico Ragaini, Antonio Fidigatti, Federico Silvestro, Andrea Morini, Alessandro De Danieli