ISLANDING DETECTION IN AN ELECTRICAL POWER GRID
    1.
    发明申请
    ISLANDING DETECTION IN AN ELECTRICAL POWER GRID 审中-公开
    电网中的岛屿检测

    公开(公告)号:WO2017174797A1

    公开(公告)日:2017-10-12

    申请号:PCT/EP2017/058432

    申请日:2017-04-07

    Applicant: ABB SCHWEIZ AG

    Abstract: A method for islanding detection in an electrical power grid (18) supplied by an electrical power source (12) comprises: measuring an output voltage ( V pcc ) and a grid current ( I g ) at an interconnection point (16) of the power source (12) with the power grid (18); estimating at least one grid parameter from the output voltage ( V pcc ) and the grid current ( I g ) based on optimizing a cost function, which minimizes a difference between the measured output voltage( V pcc ) and an estimated output voltage or a difference between the measured grid current ( I g ) and an estimated grid current, which estimated output voltage or estimated output current is a function of the measured grid current ( I g ) or the measured output voltage ( V pcc ) and the least one estimated grid parameter; and detecting an islanding condition by detecting a jump (32) and/or a deviation (34) in the at least one estimated grid parameter.

    Abstract translation: 一种用于由电源(12)供应的电力电网(18)中的孤岛检测的方法包括:测量输出电压(V (16)处的电网电流(I g)和电网电流(I g) 源(12)与电网(18); 从输出电压(vpcc)和电网电流(i pcc)估计至少一个电网参数。 基于对成本函数进行优化的成本函数来最小化所测量的输出电压(Vcc_pcc) )和估计的输出电压或所测量的电网电流(I gg)与估计的电网电流之间的差值,其中 估计的输出电压或估计的输出电流是所测量的电网电流(I gg)或所测量的输出电压(V pcc )和至少一个估计的电网参数; 以及通过检测所述至少一个估计的电网参数中的跳跃(32)和/或偏差(34)来检测孤岛条件。

    HYBRID POWER SYSTEM INCLUDING GENSETS AND RENEWABLE ENERGY RESOURCES, AND METHOD OF CONTROL
    2.
    发明申请
    HYBRID POWER SYSTEM INCLUDING GENSETS AND RENEWABLE ENERGY RESOURCES, AND METHOD OF CONTROL 审中-公开
    混合动力系统,包括发电机组和可再生能源,以及控制方法

    公开(公告)号:WO2017089402A1

    公开(公告)日:2017-06-01

    申请号:PCT/EP2016/078562

    申请日:2016-11-23

    Applicant: ABB SCHWEIZ AG

    CPC classification number: H02J3/383 H02J3/46 Y02E10/563

    Abstract: A hybrid power system (1 ) is disclosed. The system comprises a plurality of dispatchable power resources (7.i; 7.j) and a first controller (12) for controlling the dispatchable power resources. The system further comprises a power resource section (5) responsive to environment conditions and a second controller (17) for controlling the power resource* section (5) responsive to environment conditions. The second controller (17) is configured and arranged for measuring a total power (∑P genset ) generated by the plurality of dispatchable power resources (7.i; 7,j) and a total power (∑P PV ) generated by the power resource section (5) responsive to environment conditions; and for generating a power curtailment signal (PV curtailment ), when required, for reducing the total power (ΣΡ PV ) generated by the power resource section (5) responsive to environment conditions.

    Abstract translation: 公开了一种混合动力系统(1)。 该系统包括多个可调度电力资源(7.i; 7.j)和用于控制可调度电力资源的第一控制器(12)。 该系统还包括响应于环境条件的功率资源部分(5)和响应于环境条件来控制功率资源部分(5)的第二控制器(17)。 第二控制器(17)被配置和布置成用于测量由多个可调度电力资源(7.i; 7,j)产生的总电力(ΣP<发电机组)和总功率(Σ 响应于环境条件由功率资源部分(5)生成的功率资源部分(PV) 并且用于在需要时生成功率削减信号(PV缩减)以用于响应于环境而减少由功率资源部分(5)产生的总功率(ΣPPV) 条件。

    DC/AC CONVERTER WITH LVRT CONTROL
    3.
    发明公开
    DC/AC CONVERTER WITH LVRT CONTROL 审中-公开
    带LVRT控制的DC / AC转换器

    公开(公告)号:EP3185407A1

    公开(公告)日:2017-06-28

    申请号:EP15202616.7

    申请日:2015-12-23

    Applicant: ABB Schweiz AG

    Abstract: DC/AC converter comprising a new control device and method for managing inrush current transients during operation without requiring additional external devices or emergency operating modes forcing the DC/AC converter to shut down. The present invention is particularly, but not exclusively, aimed at grid connected DC/AC converters, often subject to inrush current phenomena due to perturbations in the grid.

    Abstract translation: DC / AC转换器包括用于管理操作期间的浪涌电流瞬变的新控制装置和方法,而不需要额外的外部装置或紧急操作模式,迫使DC / AC转换器关闭。 本发明特别但非唯一地针对电网连接的DC / AC转换器,经常受到由于电网中的扰动引起的浪涌电流现象的影响。

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