公开(公告)号：US20140175887A1

公开(公告)日：2014-06-26

申请号：US13724305

申请日：2012-12-21

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Miaolei Shao ,  Jovan Bebic ,  Owen Jannis Samuel Schelenz ,  Patrick Hammel Hart

IPC: H02J4/00

CPC classification number: H02J4/00 ,  H02J3/16 ,  H02J3/24 ,  H02J3/383 ,  Y02E10/563 ,  Y02E40/34 ,  Y10T307/658

Abstract: Systems and methods for regulating the voltage at a point of interconnection of a renewable energy plant, such as a solar plant, with a grid are provided. A voltage signal indicative of the voltage at the point of interconnection can be received and filtered with a high pass filter to generate a filtered error signal. The high pass filter can block components of the voltage signal at a frequency less than a threshold frequency. A reactive power command for the renewable energy plant can be generated based on the filtered error signal. One or more inverters of the renewable energy plant can be controlled to output reactive power based on the reactive power command. A rejection module can be implemented to prevent adverse interaction with other voltage control devices. In addition, a reset module can be implemented to preserve dynamic reactive power range of the inverters.

Abstract translation: 提供了用于调节可再生能源工厂（例如太阳能发电厂）与电网的互连点处的电压的系统和方法。 可以接收表示互连点处的电压的电压信号并用高通滤波器进行滤波，以产生滤波后的误差信号。 高通滤波器可以以小于阈值频率的频率阻挡电压信号的分量。 可以基于经滤波的误差信号产生可再生能源装置的无功功率指令。 可以控制可再生能源工厂的一个或多个逆变器，以基于无功功率命令输出无功功率。 可以实施拒绝模块以防止与其他电压控制设备的不利相互作用。 此外，可以实现复位模块以保持逆变器的动态无功功率范围。

公开(公告)号：US20140152111A1

公开(公告)日：2014-06-05

申请号：US13689897

申请日：2012-11-30

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Owen Jannis Samuel Schelenz

IPC: H02J3/46

CPC classification number: H02J3/46 ,  H02J3/383 ,  Y02E10/563 ,  Y10T307/707

Abstract: A power generation system including photovoltaic modules for generating DC power and power converters coupled to the photovoltaic modules for converting the DC power to AC power is provided. The power generation system also includes a central controller that executes the steps of determining a real time AC power generation capacity of the power converters, determining a difference between a required AC power generation capacity and the real time AC power generation capacity, identifying a real time AC voltage of each of the power converters, identifying a reserve AC current capacity of each of the power converters based on the real time AC voltage and an AC current rating of each of the power converters and using the reserve AC current capacity to generate reserve power for reducing the difference between the required AC power generation capacity and the real time AC power generation capacity.

Abstract translation: 提供了包括用于产生DC功率的光伏模块和耦合到光伏模块的功率转换器以将DC电力转换成AC电力的发电系统。 发电系统还包括中央控制器，其执行确定功率转换器的实时AC发电能力的步骤，确定所需的AC发电容量与实时AC发电能力之间的差异，识别实时 每个功率转换器的交流电压，基于实时AC电压和每个功率转换器的AC电流额定值识别每个功率转换器的备用AC电流容量，并使用备用AC电流容量产生备用电力 用于减少所需交流发电能力与实时交流发电能力之间的差异。

公开(公告)号：US09680307B2

公开(公告)日：2017-06-13

申请号：US13724305

申请日：2012-12-21

Applicant: General Electric Company

Inventor： Miaolei Shao ,  Jovan Bebic ,  Owen Jannis Samuel Schelenz ,  Patrick Hammel Hart

IPC: H02J4/00 ,  H02J3/16 ,  H02J3/24 ,  H02J3/38

CPC classification number: H02J4/00 ,  H02J3/16 ,  H02J3/24 ,  H02J3/383 ,  Y02E10/563 ,  Y02E40/34 ,  Y10T307/658

Abstract: Systems and methods for regulating the voltage at a point of interconnection of a renewable energy plant, such as a solar plant, with a grid are provided. A voltage signal indicative of the voltage at the point of interconnection can be received and filtered with a high pass filter to generate a filtered error signal. The high pass filter can block components of the voltage signal at a frequency less than a threshold frequency. A reactive power command for the renewable energy plant can be generated based on the filtered error signal. One or more inverters of the renewable energy plant can be controlled to output reactive power based on the reactive power command. A rejection module can be implemented to prevent adverse interaction with other voltage control devices. In addition, a reset module can be implemented to preserve dynamic reactive power range of the inverters.