LOAD SHEDDING IN A MICROGRID
    1.
    发明申请
    LOAD SHEDDING IN A MICROGRID 审中-公开
    在MICROGRID中加载SHEDDING

    公开(公告)号:WO2017097379A1

    公开(公告)日:2017-06-15

    申请号:PCT/EP2015/079441

    申请日:2015-12-11

    Applicant: ABB SCHWEIZ AG

    Abstract: A method and a microgrid controller (4) for controlling load shedding in a microgrid (1), which microgrid (1) comprises a plurality of loads (12:1-12:5, 13:1-13:5), a plurality of power sources (2, 2A), and a point of common coupling (3) for selectively connecting the microgrid (1) to a main grid (30). The microgrid controller is provided for performing the method, which includes: - monitoring (202, 302) the power balance in the microgrid (1); - determining (204, 302) a need for load shedding in view of the power balance; and - selecting (206, 306) at least one load to be disconnected, in view of the need for load shedding. Especially, the selecting (206, 306) is performed in view of the locations of the plurality of loads (12:1-12:5, 13:1-13:5) within the microgrid (1) in relation to at least one microgrid system voltage and microgrid system frequency controlling entity (2, 3, 30) of the microgrid (1), wherein the loads (12:1-12:3; 13:1-13:2) that are closest to the microgrid system voltage and microgrid system frequency controlling entity, or entities, (2, 30) are prioritized for disconnection, and subsequently disconnecting (208) the selected load, or loads (12:1-12:3; 13:1-13:2).

    Abstract translation: 一种用于控制微电网(1)中的负载脱落的方法和微电网控制器(4),所述微电网(1)包括多个负载(12:1-12:5,13:1 -13:5),多个电源(2,2A)以及用于选择性地将微电网(1)连接到主电网(30)的公共耦合点(3)。 微电网控制器被提供用于执行该方法,该方法包括: - 监测(202,302)微电网(1)中的功率平衡; - 鉴于功率平衡,确定(204,302)需要减载; 以及 - 考虑到减载的需要,选择(206,306)至少一个要断开的负载。 特别地,鉴于微电网(1)内的多个负载(12:1-12:5,13:1-13:5)的位置关于至少一个负载 微电网系统电压和微电网系统频率控制实体(2,3,30),其中负载(12:1-12:3; 13:1-13:2)最接近微电网系统 电压和微电网系统频率控制实体或实体(2,31)被优先用于断开连接,随后断开(208)所选负载或负载(12:1-12:3; 13:1-13:2)

    CONTROL OF A MICROGRID
    2.
    发明申请
    CONTROL OF A MICROGRID 审中-公开
    MICROGRID的控制

    公开(公告)号:WO2017097354A1

    公开(公告)日:2017-06-15

    申请号:PCT/EP2015/079135

    申请日:2015-12-09

    Applicant: ABB SCHWEIZ AG

    CPC classification number: H02J3/381 H02J2003/388

    Abstract: The present disclosure relates to a method of controlling a microgrid arrangement (1) comprising a microgrid (6), a plurality of Distributed Generators (DGs) (2a, 2b.2c) connected to the microgrid (6), and a switch (5) for, in a closed position, connecting the microgrid (6) to a power grid(4), and for, in an open position, disconnecting the microgrid(6) from said power grid (4). The method comprises detecting instability in the microgrid(6). The method also comprises, in response to the detection, switching operating mode of a first DG (2a) of the plurality of DGs from a grid following mode to a grid forming support mode and of a second DG (2b) the plurality of DGs to a grid forming mode. The method also comprises, when the first DG(2a) is in the grid forming support mode, controlling output to the microgrid (6) from the first DG (2a) based on a first voltage reference during a transient state of the microgrid and based on a power reference during a steady state of the microgrid, and controlling output to the microgrid from the second DG (2b) based on a second voltage reference during both the transient state and the steady state.

    Abstract translation: 本公开涉及一种控制微电网布置(1)的方法,所述微电网布置(1)包括微电网(6),连接到微电网的多个分布式发电机(DG)(2a,2b.2c) (6)和开关(5),用于在关闭位置将微电网(6)连接到电网(4),并且用于在断开位置将微电网(6)从所述电网 )。 该方法包括检测微电网(6)中的不稳定性。 该方法还包括,响应于检测,将多个DG中的第一DG(2a)的操作模式从电网跟随模式切换到电网形成支持模式,并且将多个DG的第二DG(2b)的操作模式切换到 网格形成模式。 该方法还包括当第一DG(2a)处于电网形成支持模式时,在微电网的瞬态状态期间基于第一电压参考来控制从第一DG(2a)到微电网(6)的输出,并且基于 在微电网的稳定状态期间在功率参考上进行控制,并且在瞬态和稳态期间基于第二电压参考来控制从第二DG(2b)到微电网的输出。

    A METHOD TO IMPROVE MICROGRID STABILITY WITH MGC CONTROLLERS
    3.
    发明申请
    A METHOD TO IMPROVE MICROGRID STABILITY WITH MGC CONTROLLERS 审中-公开
    MGC控制器改善微生物稳定性的方法

    公开(公告)号:WO2017067585A1

    公开(公告)日:2017-04-27

    申请号:PCT/EP2015/074311

    申请日:2015-10-21

    Applicant: ABB SCHWEIZ AG

    Abstract: A method for controlling a microgrid (1) comprising a plurality of microgrid assets (2), comprising determining (200) an individual control mode for island operation for each microgrid asset (2), which determining of individual control modes for island operation is performed when the microgrid (1) is connected. The determining (200) comprises calculating (201) the capability of each microgrid asset (2) to contribute in each of the available control modes of the microgrid asset (2), and determining (203) a specific control mode for each microgrid asset (2) in case of islanding. The method further comprises determining (110) whether a disconnection from the main grid occur. In case the microgrid (1) continues to be connected to the main grid, the method includes repeating the steps of determining (200) an individual control mode for each microgrid asset (2) as a preparation for islanding operation. In case the microgrid (1) becomes disconnected from the main grid the method includes controlling (301 ) each microgrid asset (2) in accordance with the determined control mode for the microgrid asset. Microgrid controllers 21 for distributed control of the method are also provided.

    Abstract translation: 一种用于控制包括多个微电网资产(2)的微电网(1)的方法,包括确定(200)用于每个微电网资产(2)的岛运行的单独控制模式,所述确定 当微电网(1)连接时,执行孤岛运行的单独控制模式。 确定(200)包括计算(201)每个微电网资产(2)在微电网资产(2)的每个可用控制模式中贡献的能力,以及确定(203)每个微电网资产的特定控制模式 2)在孤岛的情况下。 该方法还包括确定(110)是否发生与主电网的断开。 在微电网(1)继续连接到主电网的情况下,该方法包括重复确定(200)每个微电网资产(2)的单独控制模式作为用于孤岛运行的准备的步骤。 在微电网(1)与主电网断开的情况下,该方法包括根据确定的微电网资产的控制模式来控制(301)每个微电网资产(2)。 还提供了微电网控制器21,用于该方法的分布式控制。

    BATTERY ENERGY STORE
    4.
    发明申请

    公开(公告)号:WO2018172216A1

    公开(公告)日:2018-09-27

    申请号:PCT/EP2018/056700

    申请日:2018-03-16

    Applicant: ABB SCHWEIZ AG

    Abstract: The present invention relates to a method for enabling dynamic evaluation of performance of a battery energy store. The battery energy store comprises a plurality of batteries and the method comprises excitation of the battery energy store, including increasing (1) a current charge/discharge for one or more of the plurality of batteries, and decreasing (1) a current charge/discharge for one or more of the plurality of batteries, wherein a total current charge/discharge for the plurality of batteries is kept unchanged; measuring (2) real-time parameters (V, I, T) of the excited battery energy store (1), estimating (3) a state of charge (SOC) for the battery energy store, the estimation being based on the measured real-time parameters and offline data (4) of the energy store, identification (3) of R-C parameters for an equivalent circuit model (ECM) of the battery energy store, the identification being based on the measured real-time parameters, updating (5) a look-up table with the identified R-C parameters for different operating conditions; and simulating (5) performance of the battery energy store based on two or more operating conditions. A system, a marine vessel and a computer program product thereof are also presented.

    POWER CONTROL OF A MICROGRID
    5.
    发明申请
    POWER CONTROL OF A MICROGRID 审中-公开
    MICROGRID的功率控制

    公开(公告)号:WO2017148520A1

    公开(公告)日:2017-09-08

    申请号:PCT/EP2016/054553

    申请日:2016-03-03

    Applicant: ABB SCHWEIZ AG

    Abstract: A method (100) for controlling power in a microgrid (1) that comprises power sources (3), loads (5) and at least one connection to a main grid (2) where a transformer (4) is arranged to transfer electric power between the microgrid (1) and the main grid (2) is disclosed. The method comprises: monitoring (101 ) the power balance within the microgrid (1); monitoring (102) the transformer (4), including monitoring the transformer temperature; and detecting (103) a need for overloading the transformer (4) based on the power balance within the microgrid (1). Especially, the method comprises: determining (106) a load profile for the transformer (4) based on the power balance within the microgrid (1); determining a prognosis (107) of the transformer temperature based on the load profile; and determining (108) a schedule for power control of the microgrid (1), which determining of a schedule for power control includes analyzing (108A) the prognosis of the transformer temperature.

    Abstract translation: (1)中的功率的方法(100),所述方法包括电源(3),负载(5)和至主电网(2)的至少一个连接,其中变压器 4)被布置为在微电网(1)和主电网(2)之间传输电力。 该方法包括:监测(101)微电网(1)内的功率平衡; 监测(102)变压器(4),包括监测变压器温度; 以及基于微电网(1)内的功率平衡来检测(103)需要使变压器(4)过载。 特别地,该方法包括:基于微电网(1)内的功率平衡确定(106)变压器(4)的负载曲线; 基于所述负载分布确定所述变压器温度的预测(107); 以及确定(108)用于微电网(1)的功率控制的时间表,确定用于功率控制的时间表包括分析(108A)变压器温度的预测。

    A PHOTOVOLTAIC POWER PLANT SYSTEM
    6.
    发明申请

    公开(公告)号:WO2018162215A1

    公开(公告)日:2018-09-13

    申请号:PCT/EP2018/054062

    申请日:2018-02-20

    Applicant: ABB SCHWEIZ AG

    Abstract: A photovoltaic power plant system (1) for power generation is provided, comprising one or more photovoltaic clusters (18a, 18b, 18c, 18d) and one or more modular multilevel converters (22). Each photovoltaic cluster (18a, 18b, 18c, 18d) comprises a number of photovoltaic strings (14) connected to one or more MPPT DC/DC, converters (17a) connected to a common LVDC, bus. Each photovoltaic cluster (18a, 18b, 18c, 18d) comprises a DC/DC converter (13a) comprising an input connected to the LVDC bus, and an output connected to a MVDC collection grid (29a, 29b). Each of the one or more modular multilevel converters (22) comprises an input connected to the one or more photovoltaic clusters (18a, 18b, 18c, 18d) via the MVDC collection grid (29a, 29b) and an output connected to a transmission grid (23).

    MICROGRID SEGMENTATION
    7.
    发明申请
    MICROGRID SEGMENTATION 审中-公开
    MICROGRID分割

    公开(公告)号:WO2017097380A1

    公开(公告)日:2017-06-15

    申请号:PCT/EP2015/079451

    申请日:2015-12-11

    Applicant: ABB SCHWEIZ AG

    CPC classification number: H02J3/381 H02J3/006 H02J7/0026 H02J2003/388

    Abstract: The present disclosure relates to a method of controlling a microgrid arrangement (1) comprising a microgrid (6) comprising a plurality of switches (8), and a plurality of Distributed Generators (DGs) (2a,2b,2c) arranged for being connected to the microgrid (6). The method comprises obtaining information about the microgrid arrangement(1).The method also comprises, based on the obtained information, dynamically linking a first group of switches, of the plurality of switches (8), to each other. The method also comprises detecting an event in the microgrid (6), and in response to the detection, automatically opening closed switches in the first group, whereby a first segment (9a) of the microgrid (6) is disconnected from a second segment (9b) of the microgrid (6).

    Abstract translation: 本公开涉及一种控制包括微电网(6)的微电网布置(1)的方法,所述微电网包括多个开关(8)以及多个分布式发电机(DG)(2a, 2b,2c)布置成连接到微电网(6)。 该方法包括获得关于微电网布置(1)的信息。该方法还包括基于所获得的信息将多个开关(8)中的第一组开关动态链接到彼此。 该方法还包括检测微电网(6)中的事件,并且响应于该检测,自动打开第一组中的闭合开关,由此微电网(6)的第一部分(9a)与第二部分 9b)的微电网(6)。

    BATTERY ENERGY STORE
    8.
    发明公开

    公开(公告)号:EP3379278A1

    公开(公告)日:2018-09-26

    申请号:EP17161785.5

    申请日:2017-03-20

    Applicant: ABB Schweiz AG

    Abstract: The present invention relates to a method for enabling dynamic evaluation of performance of a battery energy store. The method comprises measuring (2) real-time parameters (V, I, T) of a battery energy store (1), estimating (3) a state of charge (SOC) for the battery energy store, the estimation being based on the measured real-time parameters and off-line data (4) of the energy store, identification (3) of R-C parameters for an equivalent circuit model (ECM) of the battery energy store, the identification being based on the measured real-time parameters, updating (5) a look-up table with the identified R-C parameters for different operating conditions, and simulating (5) performance of the battery energy store based on two or more operating conditions. A system, a marine vessel and a computer program product thereof are also presented.

    A PHOTOVOLTAIC POWER PLANT SYSTEM
    10.
    发明公开

    公开(公告)号:EP3373433A1

    公开(公告)日:2018-09-12

    申请号:EP17159484.9

    申请日:2017-03-07

    Applicant: ABB Schweiz AG

    Abstract: A photovoltaic power plant system (1) for power generation is provided, comprising one or more photovoltaic clusters (18a, 18b, 18c, 18d) and one or more modular multilevel converters (22). Each photovoltaic cluster (18a, 18b, 18c, 18d) comprises a number of photovoltaic strings (14) connected to one or more MPPT DC/DC, converters (17a) connected to a common LVDC, bus. Each photovoltaic cluster (18a, 18b, 18c, 18d) comprises a DC/DC converter (13a) comprising an input connected to the LVDC bus, and an output connected to a MVDC collection grid (29a, 29b). Each of the one or more modular multilevel converters (22) comprises an input connected to the one or more photovoltaic clusters (18a, 18b, 18c, 18d) via the MVDC collection grid (29a, 29b) and an output connected to a transmission grid (23).

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