公开(公告)号：US20130062957A1

公开(公告)日：2013-03-14

申请号：US13669638

申请日：2012-11-06

Applicant: EATON CORPORATION

Inventor： VIJAY BHAVARAJU ,  RICHARD P. PEPLINSKI ,  ANISH PRASAI ,  UDAY MHASKAR

IPC: H02J1/00

CPC classification number: H02J3/38 ,  H02J3/383 ,  H02J2003/388 ,  Y02E10/563 ,  Y10T307/707 ,  Y10T307/729

Abstract: An area electric power system includes a number of direct current power sources, and a number of inverters operatively associated with the number of direct current power sources. Each of the number of inverters is structured to provide real power and controlled reactive power injection to detect islanding. An output is powered by the number of inverters. A number of electrical switching apparatus are structured to electrically connect the number of inverters to and electrically disconnect the number of inverters from a utility grid. A number of devices are structured to detect islanding with respect to the utility grid responsive to a number of changes of alternating current frequency or voltage of the output.

Abstract translation: 区域电力系统包括多个直流电源，以及与多个直流电源可操作地相关联的多个逆变器。 逆变器中的每一个被构造成提供实际功率和可控的无功功率注入来检测孤岛。 输出由逆变器的数量供电。 多个电气开关装置被构造成将逆变器的数量电连接到电力电网上并使电力断开。 多个装置被构造成响应于输出的交流频率或电压的多个变化来检测关于公用电网的孤岛。

公开(公告)号：US20150109078A1

公开(公告)日：2015-04-23

申请号：US14059621

申请日：2013-10-22

Applicant: EATON CORPORATION

Inventor： GERALD ZHENG ,  JACK GU ,  BRUCE WU ,  VIJAY BHAVARAJU ,  XIN ZHOU

IPC: G01R19/00 ,  H01H71/12

CPC classification number: G01R19/0092 ,  G01R15/18 ,  G01R19/18 ,  H01H71/125 ,  H02H1/0007 ,  H02H3/087

Abstract: A circuit for sensing a direct current includes a first resistance and a second resistance. A first portion of the direct current flows through the first resistance and a second portion of the direct current flows through the second resistance. The circuit further includes a current sensor having an opening, first and second conductors inductively coupled with the current sensor, and a switching circuit having a pair of switches structured to alternatingly switch in order that the second portion of the direct current alternatingly flows through the first and second conductors. The second portion of the direct current flowing through the first conductor passes through the opening of the current sensor in a first direction and the second portion of the direct current flowing through the second conductor passes through the opening of the current sensor in a second direction opposite to the first direction.

Abstract translation: 用于感测直流电路的电路包括第一电阻和第二电阻。 直流电流的第一部分流经第一电阻，第二部分直流电流流过第二电阻。 电路还包括电流传感器，其具有开口，与电流传感器感应耦合的第一和第二导体，以及开关电路，其具有一对开关，其被构造为交替地切换，以便直流的第二部分交替地流过第一 和第二导体。 流过第一导体的直流电流的第二部分沿着第一方向穿过电流传感器的开口，并且流过第二导体的直流的第二部分在相反的第二方向上穿过电流传感器的开口 到第一个方向。

公开(公告)号：US20160190810A1

公开(公告)日：2016-06-30

申请号：US14585835

申请日：2014-12-30

Applicant: EATON CORPORATION

Inventor： VIJAY BHAVARAJU ,  QIANG FU ,  YAKOV L. FAMILIANT ,  CHRISTOPHER S. THOMPSON

IPC: H02J3/38 ,  H02J3/28

CPC classification number: H02J3/383 ,  H02J3/16 ,  H02J3/28 ,  H02J3/382 ,  Y02E10/563 ,  Y02E10/566 ,  Y02E40/34 ,  Y02E70/30

Abstract: An energy system includes renewable energy sources each including an inverter. The renewable source inverters are coupled to a distribution line in a manner wherein power combines additively. The system also includes an energy storage source including an energy storage inverter coupled to the distribution line between the point of interconnection and the renewable source inverters. Finally, a control system is structured to: (i) control a voltage at the point of interconnection by controlling a renewable source reactive power output by the renewable source inverters and an energy storage reactive power output by the energy storage inverter, and (ii) provide power ramp rate control for the renewable energy system by controlling at least one of a renewable source real power output by each of the renewable source inverters and a first energy storage real power output by the energy storage inverter.

Abstract translation: 能源系统包括可再生能源，每个能源包括逆变器。 可再生能源逆变器以其中功率组合的方式耦合到配电线路。 该系统还包括能量存储源，其包括耦合到互连点与可再生能源逆变器之间的配电线路的能量存储逆变器。 最后，控制系统的结构是：（i）通过控制由可再生能源逆变器输出的可再生能源无功功率和由储能逆变器输出的能量存储无功功率来控制互连点处的电压，以及（ii） 通过控制由每个可再生能源逆变器输出的可再生能源实际功率和由能量存储逆变器输出的第一能量存储有功功率中的至少一个来为可再生能源系统提供功率斜坡率控制。

公开(公告)号：US20140200722A1

公开(公告)日：2014-07-17

申请号：US13743631

申请日：2013-01-17

Applicant: EATON CORPORATION

Inventor： VIJAY BHAVARAJU

IPC: G05B13/02

CPC classification number: H02J13/0006 ,  H02J3/381 ,  H02J2003/388 ,  Y02E40/72 ,  Y02P80/14 ,  Y04S10/12

Abstract: A system for detecting islanding of a microgrid includes a number of power sources to output real power and controlled reactive power injection; a number of controllers each controlling one of the number of power sources; and an output from the microgrid powered by the number of power sources. A number of electrical switching apparatus electrically connect the output from the microgrid to a grid and electrically disconnect the output from the microgrid from the grid. A microgrid controller detects islanding of the microgrid with respect to the grid, and sends a number of commands to a number of the number of controllers in order to control reactive power injection by a number of the number of power sources. A communication channel is between the microgrid controller and the number of controllers. A number of microgrid loads are powered by the output from the microgrid.

Abstract translation: 用于检测微电网孤岛的系统包括输出有功功率和受控无功功率注入的多个电源; 多个控制器，每个控制多个电源中的一个; 以及由电源数量供电的微电网输出。 一些电气开关装置将来自微电网的输出电连接到电网，并将微电网的输出与电网电断开。 微电网控制器相对于电网检测微电网的孤岛，并且将多个命令发送给多个控制器，以便控制多个电源的无功功率注入。 通信通道位于微电网控制器和控制器数量之间。 许多微电网负载由微电网的输出供电。