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    Systems and methods for islanding detection
    1.
    发明授权
    Systems and methods for islanding detection 有权
    用于孤岛检测的系统和方法

    公开(公告)号：US09142968B2

    公开(公告)日：2015-09-22

    申请号：US13103721

    申请日：2011-05-09

    申请人： Michael Ropp

    发明人： Michael Ropp

    IPC分类号： G06F1/30 ,  H02J3/38 ,  H02J3/40 ,  H02J13/00

    CPC分类号： H02J3/40 ,  H02J3/383 ,  H02J13/0006 ,  H02J2003/388 ,  Y02E10/563 ,  Y02E40/72 ,  Y02E60/723 ,  Y02P80/23 ,  Y04S10/123 ,  Y04S10/16 ,  Y10T307/729

    摘要： A solar power inverter that detects islanding conditions includes a power generation component that generates alternating current (AC) from direct current produced by photovoltaic cells. The inverter generates AC for a load or an electrical power grid. The inverter also includes a component that generates synchrophasors from characteristics of electrically proximate AC. The inverter further includes a component that receives grid synchrophasors transmitted from a location on the electrical power grid (e.g., a transmission substation). The inverter further includes a controller that uses the inverter synchrophasors and the grid synchrophasors to calculate a degree of correlation between the electrical power grid AC frequency and the frequency of the electrically proximate AC. If the degree of correlation dips below a predefined value or exhibits certain patterns or behaviors that are indicative of a loss of mains (e.g., a loss of main power along the electrical power grid), the controller can cause the power generation component to stop generating AC or cause the inverter to intentionally island by electrically disconnecting from the electrical power grid.

    摘要翻译： 检测孤岛状态的太阳能逆变器包括从由光伏电池产生的直流产生交流电的发电部件。 逆变器为负载或电力电网生成交流电。 逆变器还包括从电接近AC的特性产生同步相容器的部件。 逆变器还包括接收从电网（例如，变电站）上的位置发送的电网同步信号的部件。 逆变器还包括控制器，其使用逆变器同步器和电网同步器来计算电力电网AC频率与电接近AC的频率之间的相关程度。 如果相关程度降低到预定值以下，或表现出指示电力损失的某些模式或行为（例如，沿着电网的主电力损失），则控制器可以使发电部件停止产生 交流或通过与电网电气断开使故障岛故障。

    Systems and methods for dynamic power compensation, such as dynamic power compensation using synchrophasors
    2.
    发明授权
    Systems and methods for dynamic power compensation, such as dynamic power compensation using synchrophasors 有权
    动态功率补偿的系统和方法，如使用同步器的动态功率补偿

    公开(公告)号：US08907615B2

    公开(公告)日：2014-12-09

    申请号：US13160970

    申请日：2011-06-15

    申请人： Michael A. Mills-Price ,  Michael Ropp

    发明人： Michael A. Mills-Price ,  Michael Ropp

    IPC分类号： H01M10/44 ,  G06F1/26 ,  G05F1/70 ,  H02M7/44 ,  H02J7/00 ,  H02J3/18 ,  H02J3/38

    CPC分类号： H02J3/1821 ,  H02J3/383 ,  Y02E10/563 ,  Y02E40/30

    摘要： An electrical power generation system, such as a solar power inverter, can provide dynamic real-time power compensation, so as to mitigate the effects of voltage sags and swells (e.g., on a utility grid) and thereby provide voltage support functionality to a local grid. The electrical power generation system can do so by receiving first synchrophasor measurements that are taken at a point on the utility grid and transmitted to the electrical power generation system and by taking second synchrophasor measurements. The first and second synchrophasors indicate voltage magnitude and frequency of the alternating current (AC) at their respective measurement points. The electrical power generation system can compare the first synchrophasors with the second synchrophasors and based upon the comparison, vary the power factor of the power the electrical power generation system generates (e.g., by either supplying or absorbing reactive power).

    摘要翻译： 诸如太阳能逆变器的发电系统可以提供动态实时功率补偿，以便减轻电压骤降和膨胀的影响（例如，在公用电网上），从而向本地提供电压支持功能 格。 发电系统可以通过接收在公用电网上的一点采集并传输到发电系统并通过进行第二次同步相机测量​​的第一同步相机测量​​来实现。 第一和第二同步信号器在其各自的测量点处指示交流电（AC）的电压幅值和频率。 电力发生系统可以将第一同步物质与第二同步物质进行比较，并且基于比较，改变发电系统产生的功率的功率因数（例如，通过供应或吸收无功功率）。

    Method and system for island detection and anti-islanding protection in distributed power generation systems
    3.
    发明授权
    Method and system for island detection and anti-islanding protection in distributed power generation systems 有权
    分布式发电系统岛屿检测和防孤岛保护方法与系统

    公开(公告)号：US09287714B2

    公开(公告)日：2016-03-15

    申请号：US13689153

    申请日：2012-11-29

    申请人： Michael Ropp

    发明人： Michael Ropp

    IPC分类号： H02J4/00 ,  H02J3/38

    CPC分类号： H02J3/381 ,  G01R23/15 ,  H02J3/005 ,  H02J4/00 ,  H02J2003/388 ,  Y10T307/544

    摘要： An effective, yet relatively simple and inexpensive, method for detection of islanding in distributed power generation systems. Statistical analysis of the local line frequency, as measured at the distributed generator, is performed to detect when an island has been formed. The statistical characteristics of the local frequency are controlled by the grid when the distributed generator is not islanding. When an island is formed, however, frequency control switches to circuitry associated with the distributed generator. Because the statistical characteristics of the frequency control performed by the distributed generator are markedly different from those of the grid, the islanding condition can be detected and corrected.

    摘要翻译： 一种用于分布式发电系统中孤岛检测的有效而又相对简单和便宜的方法。 在分布式发生器处测量的局部线路频率的统计分析被执行以检测何时形成岛。 当分布式发电机不分离时，本地频率的统计特性由电网控制。 然而，当形成岛时，频率控制切换到与分布式发电机相关联的电路。 由于分布式发电机执行的频率控制的统计特性与电网的统计特性明显不同，因此可以检测和纠正孤岛状态。

    METHOD AND SYSTEM FOR ISLAND DETECTION AND ANTI-ISLANDING PROTECTION IN DISTRIBUTED POWER GENERATION SYSTEMS
    4.
    发明申请
    METHOD AND SYSTEM FOR ISLAND DETECTION AND ANTI-ISLANDING PROTECTION IN DISTRIBUTED POWER GENERATION SYSTEMS 审中-公开
    分布式发电系统中岛屿检测和防护岛防护的方法与系统

    公开(公告)号：US20130264874A1

    公开(公告)日：2013-10-10

    申请号：US13689153

    申请日：2012-11-29

    申请人： Michael Ropp

    发明人： Michael Ropp

    IPC分类号： H02J4/00

    CPC分类号： H02J3/381 ,  G01R23/15 ,  H02J3/005 ,  H02J4/00 ,  H02J2003/388 ,  Y10T307/544

    摘要： An effective, yet relatively simple and inexpensive, method for detection of islanding in distributed power generation systems. Statistical analysis of the local line frequency, as measured at the distributed generator, is performed to detect when an island has been formed. The statistical characteristics of the local frequency are controlled by the grid when the distributed generator is not islanding. When an island is formed, however, frequency control switches to circuitry associated with the distributed generator. Because the statistical characteristics of the frequency control performed by the distributed generator are markedly different from those of the grid, the islanding condition can be detected and corrected.

    摘要翻译： 一种用于分布式发电系统中孤岛检测的有效而又相对简单和便宜的方法。 在分布式发生器处测量的局部线路频率的统计分析被执行以检测何时形成岛。 当分布式发电机不孤岛时，本地频率的统计特性由电网控制。 然而，当形成岛时，频率控制切换到与分布式发电机相关联的电路。 由于分布式发电机执行的频率控制的统计特性与电网的统计特性明显不同，因此可以检测和纠正孤岛状态。

    SYSTEMS AND METHODS FOR DYNAMIC POWER COMPENSATION, SUCH AS DYNAMIC POWER COMPENSATION USING SYNCHROPHASORS
    7.
    发明申请
    SYSTEMS AND METHODS FOR DYNAMIC POWER COMPENSATION, SUCH AS DYNAMIC POWER COMPENSATION USING SYNCHROPHASORS 有权
    用于动态功率补偿的系统和方法，如使用同步器的动态功率补偿

    公开(公告)号：US20110316480A1

    公开(公告)日：2011-12-29

    申请号：US13160970

    申请日：2011-06-15

    申请人： Michael A. Mills-Price ,  Michael Ropp

    发明人： Michael A. Mills-Price ,  Michael Ropp

    IPC分类号： H02J7/00 ,  G05F1/70 ,  G06F1/26 ,  H02M7/44

    CPC分类号： H02J3/1821 ,  H02J3/383 ,  Y02E10/563 ,  Y02E40/30

    摘要： An electrical power generation system, such as a solar power inverter, can provide dynamic real-time power compensation, so as to mitigate the effects of voltage sags and swells (e.g., on a utility grid) and thereby provide voltage support functionality to a local grid. The electrical power generation system can do so by receiving first synchrophasor measurements that are taken at a point on the utility grid and transmitted to the electrical power generation system and by taking second synchrophasor measurements. The first and second synchrophasors indicate voltage magnitude and frequency of the alternating current (AC) at their respective measurement points. The electrical power generation system can compare the first synchrophasors with the second synchrophasors and based upon the comparison, vary the power factor of the power the electrical power generation system generates (e.g., by either supplying or absorbing reactive power).

    摘要翻译： 诸如太阳能逆变器的发电系统可以提供动态实时功率补偿，以便减轻电压骤降和膨胀的影响（例如，在公用电网上），从而向本地提供电压支持功能 格。 发电系统可以通过接收在公用电网上的一点采集并传输到发电系统并通过进行第二次同步相机测量​​的第一同步相机测量​​来实现。 第一和第二同步信号器在其各自的测量点处指示交流电（AC）的电压幅值和频率。 电力发生系统可以将第一同步物质与第二同步物质进行比较，并且基于比较，改变发电系统产生的功率的功率因数（例如，通过供应或吸收无功功率）。

    SYSTEMS AND METHODS FOR ISLANDING DETECTION
    8.
    发明申请
    SYSTEMS AND METHODS FOR ISLANDING DETECTION 有权
    用于岛屿检测的系统和方法

    公开(公告)号：US20110276192A1

    公开(公告)日：2011-11-10

    申请号：US13103721

    申请日：2011-05-09

    申请人： Michael Ropp

    发明人： Michael Ropp

    IPC分类号： G06F1/30 ,  H02J3/38

    CPC分类号： H02J3/40 ,  H02J3/383 ,  H02J13/0006 ,  H02J2003/388 ,  Y02E10/563 ,  Y02E40/72 ,  Y02E60/723 ,  Y02P80/23 ,  Y04S10/123 ,  Y04S10/16 ,  Y10T307/729

    摘要： A solar power inverter that detects islanding conditions includes a power generation component that generates alternating current (AC) from direct current produced by photovoltaic cells. The inverter generates AC for a load or an electrical power grid. The inverter also includes a component that generates synchrophasors from characteristics of electrically proximate AC. The inverter further includes a component that receives grid synchrophasors transmitted from a location on the electrical power grid (e.g., a transmission substation). The inverter further includes a controller that uses the inverter synchrophasors and the grid synchrophasors to calculate a degree of correlation between the electrical power grid AC frequency and the frequency of the electrically proximate AC. If the degree of correlation dips below a predefined value or exhibits certain patterns or behaviors that are indicative of a loss of mains (e.g., a loss of main power along the electrical power grid), the controller can cause the power generation component to stop generating AC or cause the inverter to intentionally island by electrically disconnecting from the electrical power grid.

    摘要翻译： 检测孤岛状态的太阳能逆变器包括从由光伏电池产生的直流产生交流电的发电部件。 逆变器为负载或电力电网生成交流电。 逆变器还包括从电接近AC的特性产生同步相容器的部件。 逆变器还包括接收从电网（例如，变电站）上的位置发送的电网同步信号的部件。 逆变器还包括控制器，其使用逆变器同步器和电网同步器来计算电力电网AC频率与电接近AC的频率之间的相关程度。 如果相关程度降低到预定值以下，或表现出指示电力损失的某些模式或行为（例如，沿着电网的主电力损失），则控制器可以使发电部件停止产生 交流或通过与电网电气断开使故障岛故障。