公开(公告)号：US20220341992A1

公开(公告)日：2022-10-27

申请号：US17714456

申请日：2022-04-06

Applicant: ABB S.p.A.

Inventor： Pierantonio Arrighetti ,  Enrico Ragaini

IPC: G01R31/327 ,  H02J3/38 ,  G05B13/04 ,  G01R19/165

Abstract: 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.

公开(公告)号：US10352985B2

公开(公告)日：2019-07-16

申请号：US15228404

申请日：2016-08-04

Applicant: ABB S.P.A.

Inventor： Enrico Ragaini ,  Marco Carminati

IPC: G01R31/02 ,  G01R31/08 ,  H01F38/40 ,  H02H1/00 ,  H02M7/04

Abstract: 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 said third detection signal (RT) with a first threshold value (TH1). In a further aspect, the invention relates to an electronic device (1) including processing means for carrying out said method.

公开(公告)号：US20180246149A1

公开(公告)日：2018-08-30

申请号：US15966063

申请日：2018-04-30

Applicant: ABB S.p.A

Inventor： Enrico Ragaini ,  Emilio Locatelli

IPC: G01R19/25 ,  H02J3/00 ,  G01R21/133 ,  G01R25/00

Abstract: 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.

公开(公告)号：US20160223599A1

公开(公告)日：2016-08-04

申请号：US15000091

申请日：2016-01-19

Applicant: ABB S.p.A

Inventor： Enrico Ragaini ,  Emilio Locatelli

IPC: G01R19/25 ,  G01R21/133

CPC classification number: G01R19/2506 ,  G01R21/133 ,  G01R25/00 ,  H02J3/00

Abstract: 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.

Abstract translation: 电量测量装置，包括：同步模块，被构造成产生同步信号; 以及第一测量装置，其可连接到电路并被构造为接收所述同步信号，并且提供表示与所述电路相关联的第一电量的第一傅里叶变换系数和根据与所述电路相关联的测量时刻之间的时间偏移的第一延迟值 在第一测量装置处测量第一电量和同步信号的接收时刻。 该测量装置还包括处理模块，该处理模块构造成处理第一傅里叶变换系数和第一延迟值，并提供表示第一同步测量电量的第一时移傅里叶变换系数。

公开(公告)号：US10527657B2

公开(公告)日：2020-01-07

申请号：US15966063

申请日：2018-04-30

Applicant: ABB S.p.A

Inventor： Enrico Ragaini ,  Emilio Locatelli

IPC: G01R19/25 ,  G01R21/133 ,  G01R25/00 ,  H02J3/00

Abstract: 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.

公开(公告)号：US20180316176A1

公开(公告)日：2018-11-01

申请号：US15961180

申请日：2018-04-24

Applicant: ABB S.p.A.

Inventor： Enrico Ragaini ,  Daniele Angelosante ,  Lorenzo Fagiano

IPC: H02H1/00 ,  G01R31/08 ,  G01R19/165

CPC classification number: H02H1/043 ,  G01R31/02 ,  H02H1/0092 ,  H02H3/083 ,  H02H7/26

Abstract: 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.

公开(公告)号：US11451042B2

公开(公告)日：2022-09-20

申请号：US15961180

申请日：2018-04-24

Applicant: ABB S.p.A.

Inventor： Enrico Ragaini ,  Daniele Angelosante ,  Lorenzo Fagiano

IPC: H02H1/00 ,  G01R19/165 ,  G01R31/08 ,  H02H3/08 ,  H02H7/26 ,  H02H1/04

Abstract: 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.

公开(公告)号：US10424926B2

公开(公告)日：2019-09-24

申请号：US15831877

申请日：2017-12-05

Applicant: ABB S.p.A.

Inventor： Antonio Fidigatti ,  Enrico Ragaini ,  Fabio Monachesi ,  Fabio D'Agostino ,  Federico Silvestro

IPC: H02J3/14 ,  H02J3/38

Abstract: 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. The method of controlling is carried out in response to the disconnection of the micro-grid from the main grid on a disconnection instant and comprises the following: determining whether the electric disconnection of the micro-grid from the main grid is due to a fault in the main grid; if it is determined that the disconnection of the micro-grid from the main grid is not due to a fault in the main grid, executing a load shedding procedure to disconnect in a selective manner one or more disconnectable loads; if it is determined that the disconnection of the micro-grid from the main grid is due to a fault in the main grid, determining whether a drop of a frequency of the micro-grid is in progress following the disconnection of the micro-grid; and if a drop of frequency is in progress following the disconnection of the micro-grid from the main grid, executing the load shedding procedure.

公开(公告)号：US20180159327A1

公开(公告)日：2018-06-07

申请号：US15831877

申请日：2017-12-05

Applicant: ABB S.p.A.

Inventor： Antonio Fidigatti ,  Enrico Ragaini ,  Fabio Monachesi ,  Fabio D'Agostino ,  Federico Silvestro

IPC: H02J3/14 ,  H02J3/38

Abstract: 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. The method of controlling is carried out in response to the disconnection of the micro-grid from the main grid on a disconnection instant and comprises the following: determining whether the electric disconnection of the micro-grid from the main grid is due to a fault in the main grid; if it is determined that the disconnection of the micro-grid from the main grid is not due to a fault in the main grid, executing a load shedding procedure to disconnect in a selective manner one or more disconnectable loads; if it is determined that the disconnection of the micro-grid from the main grid is due to a fault in the main grid, determining whether a drop of a frequency of the micro-grid is in progress following the disconnection of the micro-grid; and if a drop of frequency is in progress following the disconnection of the micro-grid from the main grid, executing the load shedding procedure.