FORCED SYMMETRY INSULATION MONITORING DEVICE AND METHOD

    公开(公告)号:WO2023007253A1

    公开(公告)日:2023-02-02

    申请号:PCT/IB2022/051949

    申请日:2022-03-04

    Applicant: ABB SCHWEIZ AG

    Abstract: The present disclosure provides a forced symmetry IMD and a method to control the forced symmetry IMD. The system comprises an electric system power source configured to deliver electrical power to a bus, the bus including a first bus bar and a second bus bar; a common node connected across the first bus bar and the second bus bar, the common node having a common voltage; and a forced symmetry insulation monitoring device (IMD) disposed along an IMD node connected to at least one of the first bus bar and the second bus bar, the forced symmetry IMD comprising a connection to ground and one or more IMD power sources, wherein the one or more IMD power sources of the forced symmetry IMD is configured to control the common voltage on the common node based on a currently detected common voltage and a reference voltage signal.

    绝缘检测电路及检测方法、电池管理系统

    公开(公告)号:WO2020177639A1

    公开(公告)日:2020-09-10

    申请号:PCT/CN2020/077269

    申请日:2020-02-28

    Abstract: 一种绝缘检测电路及检测方法、电池管理系统,该绝缘检测电路包括:第一开关模块(K1),第一分压模块(F1)、第二分压模块(F2)、隔离模块(C1)、第三分压模块(F3)、信号发生器(Y1)和处理器(P1);其中,第一开关模块(K1)、第一分压模块(F1)和第二分压模块(F2)串联设置于待测电池组的正极和参考基准电压端(GND)之间;隔离模块(C1)、第三分压模块(F3)和信号发生器(Y1)串联设置于待测电池组的正极和参考基准电压端(GND)之间。采用方法,能够单独检测到待测电池组所在侧正极高压电路相对于参考基准电压端的绝缘阻值和待测电池组所在侧负极高压电路相对于参考基准电压端的绝缘阻值,从而能够实现高压正对地压低以及高压负对低压地的独立报警,避免出现误报警的风险。

    SYSTEM FOR CHECKING THE ELECTRICAL INSULATION IN CONVERTERS FOR ELECTRIC CARS

    公开(公告)号:WO2020053771A1

    公开(公告)日:2020-03-19

    申请号:PCT/IB2019/057635

    申请日:2019-09-11

    Inventor: LASAGNI, Cesare

    Abstract: The system (S) for checking the electrical insulation in converters for electric cars comprises at least one voltage generator (G, G1, G2) connected to at least one line (L1-Ln) to be monitored of a high-voltage converter (CNV) for electric vehicles and connected to the ground (C) of said converter (CNV), and at least one current detection unit (U, U1, U2) operatively connected to said voltage generator (G, G1, G2) and configured to detect any current possibly present on the voltage generator (G, G1, G2) and to generate a warning signal in the event of detection of the current.

    FAULT LOCATION FOR PARALLEL TRANSMISSION LINES WITH ZERO SEQUENCE CURRENTS ESTIMATED FROM FAULTED LINE MEASUREMENTS

    公开(公告)号:WO2019229638A1

    公开(公告)日:2019-12-05

    申请号:PCT/IB2019/054393

    申请日:2019-05-28

    Applicant: ABB SCHWEIZ AG

    Abstract: The invention provides a method for fault location in a power transmission system, with two terminals connected by parallel transmission lines. The fault is located in a first transmission line. The method comprises obtaining measurements of post-fault voltages and currents at one terminal, and measurements of post-fault currents at another terminal of the first transmission line. The post-fault measurements are used to calculate voltage and current phasors for various fault location values. For estimating the phasors for a fault location value, positive, negative and zero sequence voltage and current phasors are calculated for the fault location value. Here, the zero sequence phasors are calculated from the first line measurements, and zero sequence currents estimated for the second transmission line. The zero sequence currents for the second line are estimated with the zero sequence quantities of the first line measurements and line impedance parameters associated the two lines.

    DETECTION OF EARTH LEAKAGE
    6.
    发明申请

    公开(公告)号:WO2019215256A1

    公开(公告)日:2019-11-14

    申请号:PCT/EP2019/061867

    申请日:2019-05-08

    Inventor: ZALUD, Jan

    Abstract: The invention refers to a method for detecting earth leakage in the cabling of an insulated electric installation, such as an insulated railway signaling installation, the method comprising the steps of applying through a first resistor (Rel) a first voltage between cabling and ground (PE) and measuring a resulting first current (Imeas). To allow for fail-safe operation and for check of faults in earth leakage detection it is provided that independently from the first resistor (Rel) a second voltage between cabling and ground is applied through a second resistor (Rel) and that the resulting second current (Imeas) is measured, and that first and second resulting current, or variables derived from first and second resulting current, are compared, and that the first resulting current (Imeas), or a variable derived therefrom, deviates by a predefined amount from the current, or a respective variable derived therefrom, resulting from known first voltage and known first resistor (Rel), and the second resulting current (Imeas), or a variable derived therefrom, deviates by a predefined amount from the current, or a respective variable derived therefrom, resulting from known second voltage and known second resistor (Rel).

    絶縁計測装置及び絶縁計測方法
    7.
    发明申请

    公开(公告)号:WO2019187817A1

    公开(公告)日:2019-10-03

    申请号:PCT/JP2019/006384

    申请日:2019-02-20

    Abstract: 検出時の誤差要因を的確に除去して真の抵抗成分漏れ電流を精度良く求め得る絶縁計測装置及び絶縁計測方法を提供する。絶縁計測装置(10A)は、電源(1)から3相モータ(2)に接続される3相配線TRSの抵抗成分漏れ電流を計測する。3相配線TRSをそれぞれ中継する各ブスバー(11)と、貫通孔(12a)を有し、各ブスバー(11)を貫通孔(12a)に絶縁的に固定支持して貫通させ、かつ各ブスバー(11)に流れる各貫通電流を合成した零相電流を検出するZCT(12)と、少なくとも1つのブスバー(11)に流れる貫通電流を検出するCT(13)と、CT(13)にて検出した少なくとも1つの貫通電流を用いて、検出した零相電流を補正し、抵抗成分漏れ電流を計測する制御部(14)とを備えている。

    CONTINUITY TEST SYSTEM AND METHOD
    8.
    发明申请
    CONTINUITY TEST SYSTEM AND METHOD 审中-公开
    连续测试系统和方法

    公开(公告)号:WO2015164924A9

    公开(公告)日:2016-03-24

    申请号:PCT/AU2015050203

    申请日:2015-04-29

    CPC classification number: G01R31/026 G01R1/06788

    Abstract: A continuity test system (100), includes a base unit (1) and a mobile unit (9). The base unit (1) is adapted to be connected to a first portion of a test item, and, the mobile unit (9) is both interconnected to said base unit (1), and adapted to be connected to a second portion of said test item. The continuity test system (100) includes a signal generator (2), adapted to generate a dual polarity measurement signal, a measurement unit (14), adapted to measure electrical parameters of said test item (16)as said dual polarity measurement signal is applied thereto, and, a processor (13, 4), to process said measured electrical parameters and provide a resultant continuity test signal output.

    Abstract translation: 连续性测试系统(100)包括基本单元(1)和移动单元(9)。 基座单元(1)适于连接到测试项目的第一部分,并且移动单元(9)都与所述基座单元(1)互连,并且适于连接到所述基座单元 测试项目。 连续性测试系统(100)包括适于产生双极性测量信号的信号发生器(2),测量单元(14),适于测量所述测试项目(16)的电参数,因为所述双极性测量信号为 以及处理器(13,4),用于处理所述测量的电参数并提供合成的连续性测试信号输出。

    VORRICHTUNG UND VERFAHREN ZUR ÜBERWACHUNG EINER ELEKTRISCHEN ISOLATION BEI EINEM BORDNETZ
    9.
    发明申请
    VORRICHTUNG UND VERFAHREN ZUR ÜBERWACHUNG EINER ELEKTRISCHEN ISOLATION BEI EINEM BORDNETZ 审中-公开
    装置和方法监测电气隔离在电力系统

    公开(公告)号:WO2015144779A1

    公开(公告)日:2015-10-01

    申请号:PCT/EP2015/056445

    申请日:2015-03-25

    Inventor: SCHMELZER, Lars

    Abstract: Offenbart wird eine Vorrichtung (V) zur Überwachung einer elektrischen Isolation bei einem Bordnetz (BN) eines Fahrzeugs, mit : - einer Spannungsquelle (SQ) zum Generieren von Gleich-Spannungen mit einem ersten (Uq1) und einem zweiten (Uq2) Spannungswert,- eine Spannungsmesseinheit (ME1) zwischen einer positiven (LP) und einer negativen (LN) Stromversorgungsleitung des Bordnetzes (BN) zum Messen einer Spannung (Ub) zwischen der positiven (LP) und der negativen (LN) Stromversorgungsleitung,- einen Strompfad (P) zwischen einem positiven Stromanschluss (AP) der Spannungsquelle (SQ) und der positiven (LP),- eine Strommesseinheit (ME2) in dem Strompfad (P) zum Messen eines durch den Strompfad (P) fließenden Stromes (I),- eine Ermittlungseinheit (EE), eingerichtet zum Ermitteln eines Isolationswiderstands (R_ISO) zwischen dem Bordnetz (BN) und elektrischer Masse (MA) aus Spannungsmesswerten (Ubl, Ub2) der Spannungsmesseinheit (MEl), Strommesswerten (II, 12) der Strommesseinheit (ME2), sowie dem ersten (Uq1) und dem zweiten (Uq2) Spannungswert.

    Abstract translation: 公开的是一种用于监测车辆的车载网络(BN)上的电绝缘的装置,包括(V): - 一个电压源(SQ),用于产生具有第一(U Q1)的DC电压和第二(Uq2)的电压值, - 电压测量单元(ME1)正(LP)之间和所述电气系统(BN)的用于测量阳性(LP)之间的张力(UB)的负(LN)电源线和所述负(LN)电源线, - 一个电流路径(P) 一个正电源端子的电压源的(AP)(SQ)和正(LP)之间, - (确定单元 - 在用于通过所述电流路径的测量的电流路径(P)的电流测量单元(ME2)(P)中流动的电流(I), EE),其适于(从电压测量单元MEL的电压测量UBL,UB2)(((II(R_ISO)(车载网络BN)和电接地MA)之间),所述电流测量单元的,电流测量值,12)(ME2),sowi检测的绝缘电阻 E中的第一(U Q1)和第二(Uq2)电压值。

    ISOLATIONSMESSVERFAHREN FÜR TRAFOLOSE WECHSELRICHTER
    10.
    发明申请
    ISOLATIONSMESSVERFAHREN FÜR TRAFOLOSE WECHSELRICHTER 审中-公开
    测量在变压器的逆变器隔离

    公开(公告)号:WO2014079775A1

    公开(公告)日:2014-05-30

    申请号:PCT/EP2013/073918

    申请日:2013-11-15

    Inventor: HERMELING, Dirk

    CPC classification number: G01R27/18 H02S50/10

    Abstract: Zur Messung des Isolationswiderstands (Riso) eines Gleichspannungseingangs (2) eines laufenden transformatorlosen Wechselrichters (1),der an einem Wechselspannungsausgang (3)mit vorgegebenem Erdbezugeinen Wechselstrom ausgibt, und von an den Gleichspannungseingang (2) angeschlossenen Gleichspannungsquellen (6)gegenüber Erde wird ein periodisches Prüfspannungssignalmit einer geringeren Frequenz als derjenigen des Wechselstroms so gegenüber dem vorgegebenen Erdbezug des Wechselspannungsausgangs (3) generiert, dass es bei dem laufendem Wechselrichter (1) auf die Spannung am Gleichspannungseingang (2) aufmoduliert wird, und ein durch das Prüfspannungssignalhervorgerufener Erdstromwird erfasst.

    Abstract translation: 对于DC电压输入的绝缘电阻(里瑟)的测定(2)的电流变压器的逆变器(1),其输出到输出交流电压(3)以预定的Erdbezugeinen交流电,和直流电压输入(2),连接到直流电压源(6)相对于地将是一个 这样生成的周期性Prüfspannungssignalmit比交流电流相反的交流电压输出端(3)的所述预定接地参考的较低频率,即它在运行逆变器(1)上的电压在直流电压输入端(2)被调制,并通过PrüfspannungssignalhervorgerufenerErdstromwird检测。

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