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    A method for determining the operating status of a mv switching device of the electromagnetic type
    1.
    发明授权
    A method for determining the operating status of a mv switching device of the electromagnetic type 有权

    公开(公告)号：EP2998977B1

    公开(公告)日：2018-07-04

    申请号：EP14185581.7

    申请日：2014-09-19

    Applicant: ABB Schweiz AG

    Inventor： Bianco, Andrea ,  De Natale, Gabriele Valentino ,  Ricci, Andrea ,  Testa, Marco

    IPC: H01H47/00 ,  H01F7/18

    CPC classification number: H01H47/002 ,  G01R31/3274 ,  H01F2007/1855 ,  H01H47/02 ,  H01H50/20 ,  H01H50/44 ,  H01H50/54

    Abstract: A method (100) for determining the operating status a MV switching device (1), which comprises: - one or more electric poles (10), each comprising a movable contact (11) and a fixed contact (12) adapted to be coupled or uncoupled during the switching operations of said switching device; and - an electromagnetic actuator (13) comprising a magnetic core (131), a test coil (132, 134) wound around said magnetic core and a movable plunger (133) operatively coupled to the movable contact of each electric pole. The method comprises the following steps: - providing a test signal (ST) to said test coil for an observation period of time (T o ), said test signal having a waveform adapted to excite said magnetic core; - obtaining measuring data (V M , I M ) indicative of the voltage at the terminals of said test coil and of the current circulating along said test coil during said observation period of time; - calculating observation data (R N , L N ) indicative of the electric behaviour of said test coil at the end of said observation period of time on the base of said measuring data; - selecting at least a transformation function (F 1 , F 2 ) indicative of the electromagnetic behaviour of said electromagnetic actuator; - calculating first estimation data (P, T) indicative of the operating status of said electromagnetic actuator on the base of said observation data (R N , L N ) by using said transformation function, said first estimation data comprising a first estimation value (P) indicative of the position of the movable plunger of said electromagnetic actuator.

    Method and control system for controlling a switching device
    4.
    发明授权
    Method and control system for controlling a switching device 有权
    用于控制开关装置的方法和控制系统

    公开(公告)号：EP3043365B1

    公开(公告)日：2017-12-27

    申请号：EP15150502.1

    申请日：2015-01-08

    Applicant: ABB Schweiz AG

    Inventor： Bianco, Andrea ,  Ricci, Andrea ,  Mannino, Fabio ,  De Natale, Gabriele Valentino

    IPC: H01H7/16 ,  H01H9/56

    CPC classification number: H01H9/56 ,  H01H7/16

    Abstract: A method for controlling a switching device having at least one phase comprising at least one couple of contacts which can be actuated for switching between a closed condition and an open condition, comprising: - providing control means for controlling the actuation of the at least one couple of contacts, such control means being adapted to operate using time cycles; - setting the time cycles with a predetermined time duration; - detecting a difference of a value of a parameter associated to the phase with respect a preset value; - if the value of the parameter is equal to the preset value, controlling the actuation the couple of contacts through the control means using the time cycles with the predetermined time duration, so as the switching of the couple of contacts is controlled to occur at a predetermined electrical angle of a waveform of an electrical signal associated to the phase; - when the difference is detected, modifying the predetermined time duration according to the detected difference; and - controlling the actuation of the couple of contacts through said control means using the time cycles with the modified time duration, wherein the modification is such that the switching of the couple of contacts is controlled to occur at said predetermined electrical angle.

    IMPROVED DIAGNOSTIC SOLUTIONS FOR MEDIUM VOLTAGE SWITCHING APPARATUSES
    5.
    发明公开
    IMPROVED DIAGNOSTIC SOLUTIONS FOR MEDIUM VOLTAGE SWITCHING APPARATUSES 审中-公开

    公开(公告)号：EP3745433A1

    公开(公告)日：2020-12-02

    申请号：EP19177280.5

    申请日：2019-05-29

    Applicant: ABB Schweiz AG

    Inventor： Bianco, Andrea ,  Ricci, Andrea ,  Lindell, Elisabeth ,  Halén, Stefan ,  Mannino, Fabio

    IPC: H01H3/26 ,  H01H11/00 ,  H01H71/00

    Abstract: The invention relates to a control unit (7) for a medium voltage switching apparatus (1).
    The control unit is characterised in that said control unit (7) is adapted to carry out a diagnostic method (100) to check operating conditions of one or more components of said electric poles (2).
    The diagnostic method (100) comprises the following steps:
    - basing on a selected ideal position curve (C IP ), obtaining (101) one or more first curves (C Iv , C IT ) indicative of an ideal behaviour of said switching apparatus, during an opening manoeuvre or closing manoeuvre of the switching apparatus;
    - basing on detection signals (P F , v F , T F ) provided by a closed-loop control arrangement (72) of said control unit, calculating (102) one or more second curves (C Av , C AT ) indicative of an actual behaviour of said switching apparatus, during an opening manoeuvre or closing manoeuvre of said switching apparatus;
    - carrying out (103) a comparison procedure (150) among said first and second curves (C Iv , C IT , C Av , C AT ).

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