公开(公告)号：US20160197477A1

公开(公告)日：2016-07-07

申请号：US14903562

申请日：2013-07-08

Applicant: ABB TECHNOLOGY LTD

Inventor： Ritwik MAJUMDER

IPC: H02J3/14 ,  H02J3/38

CPC classification number: H02J3/14 ,  H02J3/38 ,  H02J2003/388 ,  Y02B70/3225 ,  Y02P80/14 ,  Y04S20/222

Abstract: A method and system for controlling electrical power in a micro-grid, especially during islanding when the micro-grid is disconnected from a main grid is described. A potential load shedding for islanding is determined when the micro grid is connected to the main grid. The potential load shedding is performed when a grid switch that connects the micro-grid to a main grid opens. A frequency based load shedding and a frequency based control of power injections to the micro grid may also be performed. The frequency based load shedding is performed with a faster response than the power injection control during islanding. The frequency based power injection control is performed with a faster response than the frequency based load shedding when the micro grid is connected to the main grid. A load shedding controller, an energy storage controller and methods performed by the load shedding controller, and the energy storage controller, respectively, is also provided.

Abstract translation: 描述了一种用于控制微电网中的电力的方法和系统，特别是在微电网与主电网断开时的孤岛期间。 当微电网连接到主电网时，确定用于孤岛的潜在负载。 当将微格栅格连接到主栅格的栅格开关打开时，执行潜在的负载脱落。 还可以执行基于频率的负载脱落和对微电网的功率注入的基于频率的控制。 基于频率的负载脱落以比孤岛期间的功率注入控制更快的响应执行。 当微电网连接到主电网时，基于频率的电力注入控制以比基于频率的负载更快的响应执行。 还提供了一个卸载控制器，一个储能控制器和由卸载控制器执行的方法，以及储能控制器。

公开(公告)号：US20160285268A1

公开(公告)日：2016-09-29

申请号：US14915967

申请日：2013-09-03

Applicant: ABB TECHNOLOGY LTD

Inventor： Ritwik MAJUMDER

IPC: H02J3/38 ,  H02J3/48

CPC classification number: H02J3/381 ,  H02J3/38 ,  H02J3/48 ,  H02J2003/388 ,  Y02P80/14

Abstract: A microgrid connecting at least one distributed electricity generator includes a first switch configured for, in a closed position, connecting the microgrid to a first network line at a first point of common coupling (PCC) and for, in an open position, disconnecting the microgrid from the first network line at the first PCC; a second switch configured for, in a closed position, connecting the microgrid to a second network line at a second PCC, and for, in an open position, disconnecting the microgrid from the second network line at the second PCC; and a control unit configured for, when an islanding event has been detected when the second switch is in its closed position and the first switch is in its open position, acting to close the first switch, bringing it to its closed position.

Abstract translation: 连接至少一个分布式电力发生器的微电网包括第一开关，其构造成在关闭位置将微电网连接到公共耦合（PCC）的第一点处的第一网线，并且在打开位置，将微电网 从第一个PCC的第一个网络线; 第二开关，其构造成在关闭位置将所述微电网连接到第二PCC处的第二网络线路，并且在打开位置，在所述第二PCC处将所述微电网与所述第二网络线路断开; 以及控制单元，其被配置用于当所述第二开关处于其关闭位置并且所述第一开关处于其打开位置时检测到孤岛事件时，用于闭合所述第一开关，使其处于其闭合位置。

公开(公告)号：US20160285269A1

公开(公告)日：2016-09-29

申请号：US15031124

申请日：2013-10-22

Applicant: ABB TECHNOLOGY LTD

Inventor： Ritwik MAJUMDER

IPC: H02J3/38 ,  H02J3/16

CPC classification number: H02J3/381 ,  H02J3/16 ,  H02J3/38 ,  Y02E40/34 ,  Y02P80/14

Abstract: A distributed method is provided for controlling electrical power in a microgrid, wherein a plurality of distributed generators supply electrical power to the microgrid, and each of the distributed generators is connected to a controller for controlling the real and reactive output power from the distributed generator. The method includes the steps of measuring, for each of the distributed generators, a voltage level at a measuring point associated with that distributed generator and forwarding the measured voltage level to the controller connected to that distributed generator; determining, for each of the controllers, a parameter value related to the received measured voltage level and/or related to a reactive current injection capacity of the distributed generator connected to that controller; communicating, from each of the controllers, its determined parameter value to each other ones of the controllers; determining a sequential order in which the controllers are to control the distributed generators to inject reactive power into the microgrid based on the communicated parameter values; and controlling the distributed generators to inject reactive power into the microgrid by means of the controllers in the determined sequential order.

Abstract translation: 提供了一种用于控制微电网中的电力的分布式方法，其中多个分布式发电机向微电网提供电力，并且每个分布式发电机连接到控制器，用于控制来自分布式发电机的实际和无功输出功率。 该方法包括以下步骤：对于每个分布式发电机，测量与该分布式发电机相关联的测量点处的电压电平，并将测量的电压电平转发到连接到该分布式发电机的控制器; 为每个控制器确定与所接收的测量电压电平相关的参数值和/或与连接到该控制器的分布式发电机的无功电流注入容量有关的参数值; 从每个控制器将其确定的参数值与彼此的控制器进行通信; 确定控制器基于所传送的参数值来控制分布式发电机将无功功率注入到微电网中的顺序; 并且通过控制器以所确定的顺序控制分布式发电机将无功功率注入到微电网中。