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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
Inventor： MAJUMDER, Ritwik , MARINOPOULOS, Antonis
IPC: H02J3/38
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。
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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
Inventor： MAJUMDER, Ritwik , MARINOPOULOS, Antonis
CPC classification number: H02J13/0006 , H02J3/38 , H02J2003/388 , Y02E40/72 , Y02P80/14 , Y04S10/12
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。
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公开(公告)号：WO2021001785A1
公开(公告)日：2021-01-07
申请号：PCT/IB2020/056264
申请日：2020-07-02
Applicant: ABB SCHWEIZ AG
Inventor： BERGGREN, Bertil , MAJUMDER, Ritwik , SAERS, Robert , DIJKHUIZEN, Frans
Abstract: One embodiment is a system comprising a medium voltage direct current (MVDC) link electrically coupling a first AC-DC converter and a second AC -DC converter. The first AC -DC converter is electrically coupled with a first alternating current (AC) feeder. The second AC-DC converter electrically coupled with a second AC feeder. A battery charger electrically coupled with the MVDC link via a converterless connection. A first electronic controller is operatively coupled with the first AC-DC converter. A second electronic controller is operatively coupled with the second AC-DC converter. During operation of the battery charger to charge a battery the first electronic controller is configured to control power flow between the first AC feeder and the second AC feeder and the second electronic controller is configured to control the voltage of the MVDC link.
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公开(公告)号：WO2020198561A1
公开(公告)日：2020-10-01
申请号：PCT/US2020/025151
申请日：2020-03-27
Applicant: ABB SCHWEIZ AG , PAN, Jiuping
Inventor： PAN, Jiuping , YUAN, Chunming , YANG, Xiaobo , MAJUMDER, Ritwik , BERGGREN, Bertil , DIJKHUIZEN, Frans
Abstract: Unique systems, methods, techniques and apparatuses of a distribution system are disclosed. One exemplary embodiment is an alternating current (AC) distribution system including a first substation including a first transformer and a protective device; a first distribution network portion coupled to the first transformer; a second substation; a second distribution network portion; a DC interconnection system coupled between the first distribution network portion and the second distribution network portion; and a control system. The control system is structured to detect a fault in the first transformer or the transmission network, isolate the first distribution network from the fault, determine a set point of the DC interconnection system, and operate the DC interconnection system using the set point so as to transfer a portion of the MV AC from the second distribution network portion to the first distribution network portion.
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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
Inventor： MAJUMDER, Ritwik , MARINOPOULOS, Antonis
CPC classification number: H02J3/14 , H02J3/381 , H02J2003/388 , Y02B70/3225 , Y04S20/222
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）
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Patent Agency Ranking
公开(公告)号：WO2021139896A1
公开(公告)日：2021-07-15
申请号：PCT/EP2020/050566
申请日：2020-01-10
Applicant: ABB SCHWEIZ AG
Inventor： BERGGREN, Bertil , MAJUMDER, Ritwik , ZHANG, Lidong
Abstract: A method for transfer of power between medium voltage, MV, feeders via a MV direct current, MVDC, link in a power distribution network is presented. The method is performed in a controller (1) in the power distribution network and comprises setting (S100) an iteration step value for each of a set of power reference quantitiesof the MVDC link, and setting an initial value of each of the set of power reference quantities, iteratively changing values of each of the set of power reference quantities, and selecting one changed value of the set of power reference quantities by: changing (S120) a present value of each of the set of power reference quantities, one at a time, with the set iteration step value, respectively, into a new value, and measuring a total active power at a substation of the power distribution network for each of the new value, one at a time, and selecting (S140) the new value of the one of the set of power reference quantities that provides the lowest measured total active power at the substation, wherein a next iteration is performed with the selected new value as present value for the one of the set of power reference quantities and with the present value for the other of the set of power reference quantities. A controller for transfer of power between MV feeders via a MVDC link in a power distribution network is also presented.
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公开(公告)号：WO2019101311A1
公开(公告)日：2019-05-31
申请号：PCT/EP2017/080143
申请日：2017-11-23
Applicant: ABB SCHWEIZ AG
Inventor： MAJUMDER, Ritwik
Abstract: The present disclosure relates to a method of a microgrid control system comprised in a microgrid arrangement (l) comprising a first microgrid (2a) and a second microgrid (2b) separated by a microgrid breaker (4) and each comprising a plurality of assets (G, L, S, B), each asset being associated with a respective microgrid controller, MGC, (5) of the microgrid control system. The method comprises determining that the microgrid breaker is open; for at least one MGC of the MGCs in the first microgrid, assigning the MGC to a first group of MGCs in the first microgrid; the MGC broadcasting information to the MGCs in the first group; determining that the microgrid breaker is closed; assigning the MGC to a second group of MGCs in both the first microgrid and the second microgrid; and the MGC broadcasting information to the MGCs in the second group.
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公开(公告)号：WO2021037357A1
公开(公告)日：2021-03-04
申请号：PCT/EP2019/072986
申请日：2019-08-28
Applicant: ABB SCHWEIZ AG
Inventor： MAJUMDER, Ritwik , BERGGREN, Bertil , SCHAEFFER, David , ZHANG, Lidong , DIJKHUIZEN, Frans
Abstract: A method for restoration of a fault isolation in a medium voltage, MV, network having a plurality of feeders and a plurality of normally open, NO, switches (NO1, NO2, NO3, NO4)possibly in parallel with MV direct current, DC, links (MVDC1, MVDC2, MVDC3, MVDC4)is presented. The method is performed in a control device (1) of the MV network. The method comprises closing (S120) at least two NO switches in parallel with MVDC links of the plurality of NO switches, being connected to a fault isolated feeder of the plurality of feeders of the MV network, and opening (S150) the closed at least two NO switches in parallel with MVDC links except one.A control device, a computer program and a computer program product for restoration of a fault isolation in a MV network are also presented.
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公开(公告)号：WO2020169788A1
公开(公告)日：2020-08-27
申请号：PCT/EP2020/054592
申请日：2020-02-21
Applicant: ABB SCHWEIZ AG
Inventor： MAJUMDER, Ritwik
Abstract: Method (300) of controlling a distribution network (1) and a microgrid controller (8) adapted for the method. The distribution network (1) comprises assets (3-7) in a first part (1a) and a second part (1b) which parts (1a, 1b) are selectively connected to each other into an interconnected state at a connection point (PCC).The method comprises monitoring (301, 306) and controlling (310) the assets (3-7) of the distribution network (1). In a first control mode (310A), the first part (1a) is controlled by a distribution network controller (9) and the second part is controlled by the microgrid controller (8). Especially, the method includes selecting (303) between controlling (310) the distribution network (1) in the interconnected state in accordance with the first control mode (310A), and controlling (310) the distribution network (1) in the interconnected state in accordance with a second control mode (310B), in which second control mode (310B) the assets (3-7) of the both the first part (1a) and the second part (1b) are controlled by the distribution network controller (9).
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10.发明申请
公开(公告)号：WO2020141390A1
公开(公告)日：2020-07-09
申请号：PCT/IB2019/061045
申请日：2019-12-18
Applicant: ABB SCHWEIZ AG
Inventor： MAJUMDER, Ritwik , DIJKHUIZEN, Frans , BERGGREN, Bertil
Abstract: Systems, methods, techniques, and apparatuses of a medium voltage alternating current (MVAC) network are disclosed. One exemplary embodiment is a direct current (DC) interconnection system (160) for an MVAC distribution network (100) including an AC/AC power converter (170) including a first AC terminal (177) and a second AC terminal (179); a plurality of switching devices (163) structured to selectively couple a first AC terminal (177) to a plurality of feeder line points (122,127,132) in the MVAC network (100); and a control system (161) structured to receive a set of measurements, calculate a headroom value for each feeder line point using the set of measurements, select a first feeder line point using the calculated headroom values, operate the plurality of switching devices (163) so as to couple the first AC terminal (177) to the first feeder line point, and operate the AC/AC power converter (170) so as to transmit MVAC power from the first AC terminal (177) to the first feeder line point.
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