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1. 发明授权

US10019024B2 Methods and apparatus for detecting and correcting instabilities within a power distribution system 有权
公开(公告)号：US10019024B2
公开(公告)日：2018-07-10
申请号：US15136201
申请日：2016-04-22
申请人： Mehta Tech, Inc.
发明人： Steve Chan
IPC分类号： G05F1/66 , H02J3/24 , G05B15/02
CPC分类号： G05F1/66 , G05B15/02 , H02J3/24 , Y02E60/728 , Y02E60/74 , Y04S10/265 , Y04S10/30
摘要： Disclosed are methods and apparatus to improve the stability of power distribution systems. The methods and apparatus include using edge processing to decrease the detection and reaction times associated with disturbances within the power distribution system. The edge processor can compare sampled phasor data with center of inertia data associated with the power distribution system.

2. 发明授权

US09909940B2 System and method for non-invasive generator damping torque estimation 有权
公开(公告)号：US09909940B2
公开(公告)日：2018-03-06
申请号：US14697284
申请日：2015-04-27
申请人： General Electric Company
发明人： Naresh Acharya , Nilanjan Ray Chaudhuri , Chaitanya Ashok Baone
IPC分类号： G01L3/00 , H02J3/24 , H02P9/10 , H02J3/00
CPC分类号： G01L3/00 , H02J3/24 , H02J2003/007 , H02P9/105 , Y02E60/728 , Y02E60/76 , Y04S10/265 , Y04S40/22
摘要： A stability analysis system (SAS) for non-invasive estimation of damping torque associated with a power generator in an electric power network includes a processor in communication with a PMU associated with the generator. The processor is configured to receive a first data sample set from the PMU. The first data set is substantially representative of at least one measurement of the generator. The processor is also configured to determine an estimated torque of the generator based at least in part on the first data set. The processor is further configured to determine an estimated average torque and one or more estimated torque components based at least in part on the estimated torque. The processor is also configured to output the estimated average torque and the one or more estimated torque components to an operator for use in stability analysis of one or more of the generator and the network.

3. 发明授权

US09829880B2 System and method for modelling load in an electrical power network 有权
公开(公告)号：US09829880B2
公开(公告)日：2017-11-28
申请号：US14548699
申请日：2014-11-20
申请人： General Electric Company
发明人： Chaitanya Ashok Baone , William James Premerlani , Yan Pan , Jing Dai , Santosh Sambamoorthy Veda , Zhenyu Tan
IPC分类号： G06F19/00 , G05B19/406 , G01R19/25 , H02J3/00
CPC分类号： G05B19/406 , G01R19/2513 , G05B2219/32021 , H02J3/008 , H02J2003/007 , Y02E60/728 , Y02E60/76 , Y04S10/265 , Y04S40/22 , Y04S50/10
摘要： A method for modelling load in a power grid is provided. The method includes obtaining measurement data from a measurement device in the power grid, identifying one or more voltage adjustment events in the power grid from the measurement data, and generating a load model based on one or more voltage factors computed using the one or more voltage adjustment events.

4. 发明授权

US09753066B2 Methods and apparatus of analyzing electrical power grid data 有权
公开(公告)号：US09753066B2
公开(公告)日：2017-09-05
申请号：US13928108
申请日：2013-06-26
申请人： Battelle Memorial Institute
发明人： Ryan P. Hafen , Terence J. Critchlow , Tara D. Gibson
IPC分类号： G06F19/00 , G01R21/133 , G01R19/25 , H02J13/00 , H02J3/00
CPC分类号： G01R21/133 , G01R19/2513 , H02J13/0086 , H02J2003/001 , H02J2003/007 , Y02E60/728 , Y02E60/76 , Y04S10/265 , Y04S10/525 , Y04S40/22
摘要： Apparatus and methods of processing large-scale data regarding an electrical power grid are described. According to one aspect, a method of processing large-scale data regarding an electrical power grid includes accessing a large-scale data set comprising information regarding an electrical power grid; processing data of the large-scale data set to identify a filter which is configured to remove erroneous data from the large-scale data set; using the filter, removing erroneous data from the large-scale data set; and after the removing, processing data of the large-scale data set to identify an event detector which is configured to identify events of interest in the large-scale data set.

5. 发明授权

US09568513B2 Systems and methods to detect poorly damped oscillation modes 有权
标题翻译：检测差阻振荡模式的系统和方法
公开(公告)号：US09568513B2
公开(公告)日：2017-02-14
申请号：US14180631
申请日：2014-02-14
申请人： Schweitzer Engineering Laboratories, Inc.
发明人： Vaithianathan Venkatasubramanian , Zaid Tashman , Hamed Khalilinia
IPC分类号： H03B28/00 , G01R31/28 , G01R19/25
CPC分类号： G01R19/2513 , Y02E60/728 , Y04S10/265
摘要： A plurality of measurement signals may be evaluated to detect a poorly damped oscillation mode in an electric power delivery system. An oscillation mode of interest may be detected, and the oscillation mode of interest may be analyzed using a frequency transform. A plurality of amplitudes of the oscillation mode of interest in each measurement signal may be determined using a sliding window. The plurality of amplitudes may be used to calculate a damping of the oscillation mode of interest. The damping may be calculated solving a linearized system of equations. The linearized system of equations may be a least square estimate of the damping based on the logarithm of each amplitude. If the damping indicates that the oscillation mode of interest is poorly damped, a control action may be taken.
摘要翻译：可以评估多个测量信号以检测电力输送系统中的阻尼较弱的振荡模式。可以检测感兴趣的振荡模式，并且可以使用频率变换来分析感兴趣的振荡模式。可以使用滑动窗来确定每个测量信号中感兴趣的振荡模式的多个振幅。可以使用多个幅度来计算感兴趣的振荡模式的阻尼。可以求解阻尼，求解线性化方程组。线性化方程组可以是基于每个幅度的对数的阻尼的最小平方估计。如果阻尼指示感兴趣的振荡模式阻尼较差，则可以采取控制动作。

6. 发明申请

US20160253396A1 SYSTEMS FOR SYNCHROPHASOR DATA MANAGMENT 有权
标题翻译： SYNCHROPHASOR数据管理系统
公开(公告)号：US20160253396A1
公开(公告)日：2016-09-01
申请号：US15056867
申请日：2016-02-29
申请人： General Electric Company
发明人： Mitalkumar Gulabrai Kanabar , Oscar Lopez Aguirre , Rodrigo Gutierrez Argandona , Jason Antonio Rodrigues , Mark Gerard Adamiak
IPC分类号： G06F17/30 , G01R21/00 , G01R23/02 , G01R19/25
CPC分类号： G06F17/30569 , G01R19/2513 , G01R21/00 , G01R23/02 , G06F17/30321 , H04Q9/00 , Y02E60/728 , Y04S10/265
摘要： A system includes a Synchrophasor Data Management System (SDMS), in which the SDMS includes a Synchrophasor Processor System (SPS). The SPS includes a Phasor Data Concentrator (PDC) configured to receive a first plurality of inputs from a first Phasor Measurement Unit (PMU), transform at least one of the first plurality of inputs into a first time aligned output by time aligning the at least one of the first plurality of inputs. The SPS further includes a virtual PMU configured to aggregate the first time aligned output into a PMU dataset, in which the SPS is configured to transmit the PMU dataset to a second PMU, an external PDC, a super PDC, or a combination thereof.
摘要翻译：系统包括同步资源数据管理系统（SDMS），其中SDMS包括同步处理器系统（SPS）。 SPS包括被配置为从第一相量测量单元（PMU）接收第一多个输入的相量数据集中器（PDC），将至少一个第一多个输入转换为第一时间对准输出，第一批输入中的一个。 SPS还包括被配置为将第一时间对齐输出聚合到PMU数据集中的虚拟PMU，其中SPS被配置为将PMU数据集发送到第二PMU，外部PDC，超级PDC或其组合。

7. 发明授权

US09369269B2 Communication systems and methods for distributed power system measurement 有权
标题翻译：用于分布式电力系统测量的通信系统和方法
公开(公告)号：US09369269B2
公开(公告)日：2016-06-14
申请号：US14761989
申请日：2013-12-03
申请人： Smart Energy Instruments Inc.
发明人： Donald Jeffrey Dionne , Jennifer Marie McCann
IPC分类号： H03D3/24 , H04L7/033 , H04L7/00 , G01R19/25 , H04J3/06 , H04Q9/00 , H02J13/00
CPC分类号： H04L7/033 , G01R19/2513 , H02J13/0062 , H04J3/0664 , H04L7/0012 , H04Q9/00 , Y02E60/728 , Y02E60/74 , Y02E60/7838 , Y04S10/265 , Y04S10/30 , Y04S40/124
摘要： Described are methods, devices and systems for communicating data measurements from a sampling device to a remote master device in a distributed power measurement system using high-speed isochronous data links. The sampling device receives a time-stamp packet from the master device over the isochronous data link, the time-stamp packet containing a sequence number of the time-stamp packet, and the sampling device starts a counter clocked by a local clock signal to determine an offset time since receipt of the time-stamp packet. The sampling device obtains power system data and generates and transmits framed output data to the remote master device over the isochronous data link. The framed output data includes the sequence number, the offset time, and a data payload that includes the power system data.
摘要翻译：描述了在使用高速等时数据链路的分布式功率测量系统中将数据测量从采样设备传送到远程主设备的方法，设备和系统。采样装置通过同步数据链路从主设备接收时间戳分组，时间戳分组包含时间戳分组的序列号，采样装置启动由本地时钟信号计时的计数器，以确定自接收到时间戳分组以来的偏移时间。采样装置获取电力系统数据，并通过等时数据链路产生并传送成帧的输出数据到远程主设备。成帧输出数据包括序列号，偏移时间和包括电力系统数据的数据有效载荷。

8. 发明申请

US20160154041A1 A Synchrophasor Measurement Method Applying to P Class Phasor Measurement Unit (PMU) 审中-公开
标题翻译：应用于P类相量测量单元（PMU）的同步相机测量方法
公开(公告)号：US20160154041A1
公开(公告)日：2016-06-02
申请号：US14906367
申请日：2014-04-18
申请人： NORTH CHINA ELECTRIC POWER UNIVERSITY
发明人： Tianshu BI , Hao LIU
IPC分类号： G01R29/18
CPC分类号： G01R19/00 , G01R19/2513 , G01R25/00 , G01R29/18 , Y02E60/728 , Y04S10/265
摘要： A synchrophaser measurement method applied to a P Class Phasor Measurement Unit (PMU), and is based on the dynamic phasor mathematical model. The method includes providing a low pass digital filter for phasor factors and applying Discrete Fourier Transform, so that the spectrum leakage caused by the dynamic phasor inputs is eliminated, and the raw phasor measurements after the spectrum leakage being eliminated can be obtained. In addition, the dynamic phasor inputs are fitted by using the second order Taylor series and the linear relationship between the measurement errors causing the Discrete Fourier Transform averaging effect and the second order coefficients of the Taylor series is explored. The linear relationship is used to correct for the raw measurement errors under a dynamic condition, and the accurate dynamic phasor measurements can thus be obtained. This measurement method can measure phasor accurately and rapidly under both static and dynamic conditions.
摘要翻译：应用于P相量子测量单元（PMU）的同步激光测量方法，并且基于动态相量数学模型。该方法包括提供用于相量因子的低通数字滤波器并应用离散傅立叶变换，从而消除由动态相量输入引起的频谱泄漏，并且可以获得在消除频谱泄漏之后的原始相量测量。此外，通过使用二阶泰勒级数来拟合动态相量输入，并且探索导致离散傅里叶变换平均效应的测量误差与泰勒级数的二阶系数之间的线性关系。线性关系用于在动态条件下校正原始测量误差，从而可以获得准确的动态相量测量。该测量方法可以在静态和动态条件下准确，快速地测量相量。

9. 发明授权

US09330563B2 Synchronized metrology in power generation and distribution networks 有权
标题翻译：发电和配电网同步计量
公开(公告)号：US09330563B2
公开(公告)日：2016-05-03
申请号：US14220838
申请日：2014-03-20
申请人： Digimarc Corporation
发明人： Geoffrey B. Rhoads , Conrad Eustis
IPC分类号： H04Q9/00 , G08C19/12 , G06Q50/06 , G01D4/00 , H04Q9/04 , G01R19/25 , G01R29/18 , G01R22/10
CPC分类号： G08C19/12 , G01D4/002 , G01R19/2513 , G01R22/10 , G01R29/18 , G06Q50/06 , H04Q9/00 , H04Q9/04 , Y02B90/241 , Y02B90/246 , Y02B90/248 , Y02E60/728 , Y04S10/265 , Y04S20/32 , Y04S20/42 , Y04S20/48 , Y04S20/52
摘要： Phasor Measurement Units (PMUs) tend to be specialized and expensive—relegated to only key points in power distribution networks, and are generally reliant on GPS technology. The present disclosure details how any smart meter—using wireless communication—can perform sub-microsecond-grade synchrophasor measurements. Other aspects concern smart meter-based determination of A, B or C phase of the tri-phase power network. This can involve count-stamp enabling message packets sent to and/or from a smart meter, and then associating such count-stamps to local measurements of power phase by a metrology unit. Once a network of such enabled smart meters and other devices is formed, sub-microsecond metropolitan-wide and entire region-wide synchronizing time standard can calibrate local measurements of power phase, where simple A, B and C phase determination is one low hanging fruit application of such. Low cost aggregate monitoring of metropolitan-wide synchrophasors promises a next chapter of importance for that relatively recent art.
摘要翻译：相量测量单元（PMU）往往是专门的和昂贵的，仅限于配电网络的关键点，并且通常依赖于GPS技术。本公开详细描述了任何智能电表使用无线通信 - 如何执行亚微秒级同步相机测量。其他方面涉及三相电网的A，B或C相智能电表确定。这可以涉及发送到智能电表和/或来自智能电表的计数戳启用消息分组，然后将这样的计数标记与计量单元的功率相位的本地测量相关联。一旦形成这种启用的智能电表和其他设备的网络，亚微米大都市范围和整个区域范围的同步时间标准可以校准电力相位的局部测量，其中简单的A，B和C相位确定是一个低挂的水果这样的应用。大都市同步相机的低成本综合监控将为下一个关于该相对近期艺术的重要性提供依据。

10. 发明授权

US09043037B2 Monitoring and optimizing an electrical grid state 有权
标题翻译：监控和优化电网状态
公开(公告)号：US09043037B2
公开(公告)日：2015-05-26
申请号：US13293918
申请日：2011-11-10
申请人： Gopal K. Bhageria , Sri Ramanathan , Jean-Gael F. Reboul , Matthew B. Trevathan
发明人： Gopal K. Bhageria , Sri Ramanathan , Jean-Gael F. Reboul , Matthew B. Trevathan
IPC分类号： H02J13/00
CPC分类号： H02J13/0006 , Y02B70/3266 , Y02E60/728 , Y02E60/74 , Y04S10/265 , Y04S10/30 , Y04S20/242
摘要： Monitoring and optimizing a state of an electrical grid are provided. An approach for synchronizing state information and context information, associated with one or more electrical devices on an electrical grid, with time information is provided. The state information is from one or more phasor measurement units (PMUs) associated with the one or more electrical devices, and the context information is from one or more third party servers. The approach further includes notifying one or more subscribing devices of the synchronized state information and the synchronized context information such that the one or more subscribing devices monitors and controls the one or more electrical devices based on the synchronized state information and the synchronized context information.
摘要翻译：提供监控和优化电网的状态。提供了一种用于与电网上的一个或多个电气设备相关联的与时间信息相关联的状态信息和上下文信息的方法。状态信息来自与一个或多个电气设备相关联的一个或多个相量测量单元（PMU），并且上下文信息来自一个或多个第三方服务器。该方法还包括通知一个或多个订阅设备同步的状态信息和同步的上下文信息，使得一个或多个订阅设备基于同步的状态信息和同步的上下文信息监视和控制一个或多个电气设备。

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