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公开(公告)号：US20110282514A1
公开(公告)日：2011-11-17
申请号：US13103629
申请日：2011-05-09
申请人： Michael Ropp , Steven G. Hummel
发明人： Michael Ropp , Steven G. Hummel
CPC分类号： G01W1/10 , F24S2201/00 , H02J3/14 , H02J3/383 , H02J7/35 , H02M3/156 , H02S40/32 , Y02E10/563 , Y02E10/566 , Y04S20/224
摘要： A solar power forecasting system can provide forecasts of solar power output by photovoltaic plants over multiple time frames. A first time frame may be several hours from the time of the forecast, which can allow utility personnel sufficient time to make decisions to counteract a forecasted shortfall in solar power output. For example, the utility personnel can decide to increase power production and/or to purchase additional power to make up for any forecasted shortfall in solar power output. A second time frame can be several minutes from the time of the forecast, which can allow for operations to mitigate effects of a forecasted shortfall in solar power output. Such mitigation operations can include directing an energy management system to shed noncritical loads and/or ramping down the power produced by the photovoltaic plants at a rate that is acceptable to the utility to which the photovoltaic plants provide power.
摘要翻译： 太阳能发电预测系统可以在多个时间范围内提供光伏电站太阳能输出的预测。 第一时间框架可能是从预测时间开始的几个小时，这可以使公用事业人员有足够的时间作出决定，以抵消预计的太阳能发电量的不足。 例如，公用事业人员可以决定增加电力生产和/或购买额外的电力来弥补任何预测的太阳能发电量的不足。 第二时间段可以从预测时间开始几分钟，这可以使操作减轻预测的太阳能发电量不足的影响。 这样的缓解操作可以包括指导能量管理系统以光伏电站提供电力的公用设施可接受的速率引导非临界负载和/或降低光伏电站产生的功率。
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2.发明授权公开(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
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。
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3.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。
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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
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。
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5.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
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）。
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6.发明授权公开(公告)号：US10985568B1
公开(公告)日：2021-04-20
申请号：US15926971
申请日：2018-03-20
摘要： The present invention relates to systems and methods that use separation of time scales to mitigate interaction between unintentional islanding detection schemes and GSFs.
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公开(公告)号：US10326279B2
公开(公告)日：2019-06-18
申请号：US15213191
申请日：2016-07-18
摘要： Systems and methods for identifying an island condition in a power distribution system and disconnecting distributed generators in the case of islanding. The systems and methods are used to enable reliable detection of island formation with high false-trip immunity, for any combination of distributed energy resources, and for distributed energy resources using grid support functions.
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8.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
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）。
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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
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。
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10.发明授权公开(公告)号：US09742192B2
公开(公告)日：2017-08-22
申请号：US15066703
申请日：2016-03-10
申请人： Michael Ropp
发明人： Michael Ropp
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.
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