METHOD AND AREA ELECTRIC POWER SYSTEM DETECTING ISLANDING BY EMPLOYING CONTROLLED REACTIVE POWER INJECTION BY A NUMBER OF INVERTERS
    1.
    发明申请
    METHOD AND AREA ELECTRIC POWER SYSTEM DETECTING ISLANDING BY EMPLOYING CONTROLLED REACTIVE POWER INJECTION BY A NUMBER OF INVERTERS 有权
    方法和区域电力系统通过使用多台逆变器进行控制反应动力注入来检测岛屿

    公开(公告)号:US20110115301A1

    公开(公告)日:2011-05-19

    申请号:US12617994

    申请日:2009-11-13

    IPC分类号: H02J3/38 G06F19/00

    摘要: 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.

    摘要翻译: 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。

    PROTECTION, MONITORING OR INDICATION APPARATUS FOR A DIRECT CURRENT ELECTRICAL GENERATING APPARATUS OR A PLURALITY OF STRINGS
    3.
    发明申请
    PROTECTION, MONITORING OR INDICATION APPARATUS FOR A DIRECT CURRENT ELECTRICAL GENERATING APPARATUS OR A PLURALITY OF STRINGS 有权
    用于直流电生成装置或多条线的保护,监视或指示装置

    公开(公告)号:US20110301772A1

    公开(公告)日:2011-12-08

    申请号:US12795032

    申请日:2010-06-07

    IPC分类号: G06F1/28

    摘要: A protection apparatus is for a direct current electrical generating apparatus. The protection apparatus includes a first terminal; a second terminal; a third terminal; a fourth terminal; at least one current sensor structured to sense current flowing between the first and second terminals or between the third and fourth terminals; a voltage sensor structured to sense a voltage between the first terminal and the third terminal; at least one switch structured to interrupt the current flowing between the first and second terminals or between the third and fourth terminals; and a processor cooperating with the at least one current sensor, the voltage sensor and the at least one switch, and being structured to provide feed forward fault protection for the direct current electrical generating apparatus.

    摘要翻译: 保护装置用于直流发电装置。 保护装置包括:第一终端; 第二个终端 第三个终端; 第四个终端; 至少一个电流传感器,其被构造为感测在所述第一和第二端子之间或所述第三和第四端子之间流动的电流; 电压传感器,被构造为感测第一端子和第三端子之间的电压; 至少一个开关,被构造成中断在第一和第二端子之间或第三和第四端子之间流动的电流; 以及处理器,其与所述至少一个电流传感器,所述电压传感器和所述至少一个开关配合,并被构造成为所述直流发电设备提供前馈故障保护。