公开(公告)号：US09007733B2

公开(公告)日：2015-04-14

申请号：US14355449

申请日：2011-11-01

申请人： Jianping Wang ,  Jiuping Pan ,  Reynaldo Nuqui

发明人： Jianping Wang ,  Jiuping Pan ,  Reynaldo Nuqui

IPC分类号： H02H3/00 ,  G01R31/08 ,  H02H7/26

CPC分类号： G01R31/088 ,  G01R31/085 ,  H02H7/265

摘要： An improved method of fault detection in a high-voltage direct current (HVDC) power transmission line is provided. The fault detection is based on fault-induced travelling waves. The method comprises estimating an amplitude of fault-induced travelling waves at the fault location, and calculating a fault resistance (Rf) based on the estimated amplitude, an estimated pre-fault voltage at the fault location, and a surge impedance of the transmission line. The estimated fault amplitude and the estimated pre-fault voltage are calculated from voltage measurements performed at both ends of the transmission line. Further, a fault detection device is provided.

摘要翻译： 提供了一种改进的高压直流（HVDC）输电线路故障检测方法。 故障检测基于故障引起的行波。 该方法包括估计故障位置处的故障诱发的行波的振幅，以及基于估计的振幅，故障位置处的估计的故障前电压和传输线的浪涌阻抗来计算故障电阻（Rf） 。 估计的故障振幅和估计的故障前电压由传输线两端执行的电压测量计算。 此外，提供故障检测装置。

公开(公告)号：US20140254053A1

公开(公告)日：2014-09-11

申请号：US14355449

申请日：2011-11-01

申请人： Jianping Wang ,  Jiuping Pan ,  Reynaldo Nuqui

发明人： Jianping Wang ,  Jiuping Pan ,  Reynaldo Nuqui

IPC分类号： G01R31/08 ,  H02H7/26

CPC分类号： G01R31/088 ,  G01R31/085 ,  H02H7/265

摘要： An improved method of fault detection in a high-voltage direct current (HVDC) power transmission line is provided. The fault detection is based on fault-induced travelling waves. The method comprises estimating an amplitude of fault-induced travelling waves at the fault location, and calculating a fault resistance (Rf) based on the estimated amplitude, an estimated pre-fault voltage at the fault location, and a surge impedance of the transmission line. The estimated fault amplitude and the estimated pre-fault voltage are calculated from voltage measurements performed at both ends of the transmission line. Further, a fault detection device is provided.

摘要翻译： 提供了一种改进的高压直流（HVDC）输电线路故障检测方法。 故障检测基于故障引起的行波。 该方法包括估计故障位置处的故障诱发的行波的振幅，以及基于估计的振幅，故障位置处的估计的故障前电压和传输线的浪涌阻抗来计算故障电阻（Rf） 。 估计的故障振幅和估计的故障前电压由传输线两端执行的电压测量计算。 此外，提供故障检测装置。

公开(公告)号：US20150222122A1

公开(公告)日：2015-08-06

申请号：US14428630

申请日：2012-10-09

申请人： Reynaldo NUQUI ,  Yao CHEN ,  Jiuping PAN

发明人： Reynaldo F. Nuqui ,  Cathy Yao Chen ,  Jiuping Pan

IPC分类号： H02J3/40 ,  H02P9/00

CPC分类号： H02J3/40 ,  H02H7/067 ,  H02P1/029 ,  H02P9/006 ,  H02P9/10 ,  Y10T307/729 ,  Y10T307/735

摘要： Methods, systems, and computer readable media for adaptive out of step protection for power generators with load resynchronization capability are disclosed. According to one method, when a fault condition occurs in a load being supplied by a power generator, a number of pole slips expected to occur in the generator due to the fault before resynchronization is estimated. It is determined whether the estimated number of pole slips exceeds a threshold. An offline or online status of the generator is controlled based on the determination as to whether the estimated number of pole slips exceeds the threshold.

摘要翻译： 公开了用于具有负载再同步能力的发电机的自适应失步保护的方法，系统和计算机可读介质。 根据一种方法，当在由发电机提供的负载中发生故障状况时，估计由于再同步之前的故障而在发电机中发生的极滑数量。 确定估计的极滑数是否超过阈值。 基于关于所估计的极滑数是否超过阈值的确定来控制发电机的离线或在线状态。

公开(公告)号：US07203622B2

公开(公告)日：2007-04-10

申请号：US10744743

申请日：2003-12-23

申请人： Jiuping Pan ,  Reynaldo Nuqui ,  Le Tang

发明人： Jiuping Pan ,  Reynaldo Nuqui ,  Le Tang

IPC分类号： G06F11/30 ,  G06F15/00

CPC分类号： G06Q10/06 ,  H02J3/00 ,  Y04S10/54

摘要： A systematic approach is presented for the development and implementation of cost-effective transmission asset maintenance strategies. The overall concept and methodology are based on transmission reliability and risk management and address the value of preventive maintenance activities. This may help electric network utilities conduct maintenance policy assessment, region-wide criticality analysis, and optimal maintenance resource allocation and task scheduling.

摘要翻译： 介绍了开发和实施具有成本效益的传输资产维护策略的系统方法。 总体概念和方法是基于传输可靠性和风险管理，并解决预防性维护活动的价值。 这可能有助于电力公司进行维护策略评估，全区域关键性分析以及最优维护资源分配和任务调度。

公开(公告)号：US09197068B2

公开(公告)日：2015-11-24

申请号：US13085949

申请日：2011-04-13

申请人： Reynaldo Nuqui ,  Jiuping Pan ,  Kailash Srivastava ,  Tomas Jonsson

发明人： Reynaldo Nuqui ,  Jiuping Pan ,  Kailash Srivastava ,  Tomas Jonsson

IPC分类号： H02J3/36 ,  H02H7/125 ,  G06F1/26 ,  H02J13/00

CPC分类号： H02J3/36 ,  G06F1/26 ,  H02H7/125 ,  H02J13/0062 ,  Y02E60/60 ,  Y02E60/7838 ,  Y04S40/124

摘要： Multi-terminal HVDC systems and control methods therefore are disclosed. Methods for controlling multi-terminal HVDC systems having a plurality of converter stations may include receiving a plurality of measurements from a plurality of measurement units disposed on the HVDC system, identifying from the measurements a disruption within the HVDC system, monitoring the measurements to identify a steady-state disrupted condition for the HVDC system, calculating a new set point for at least one of the plurality of converter stations, which new set point may be based on the steady-state disrupted condition and the measurements, and transmitting the new set point to the at least one of the plurality of converter stations. In some examples, the HVDC systems may include an HVDC grid interconnecting the plurality of converter stations and a controller communicatively linked to the plurality of measurement units and the plurality of converter stations.

摘要翻译： 因此，公开了多端子HVDC系统和控制方法。 用于控制具有多个转换器站的多端子HVDC系统的方法可以包括从设置在HVDC系统上的多个测量单元接收多个测量值，从测量中识别HVDC系统内的中断，监视测量结果以识别 用于HVDC系统的稳态中断条件，为多个转换站中的至少一个转换站计算新的设定点，该新的设定点可以基于稳态中断条件和测量，并且传输新的设定点 到所述多个转换站中的至少一个。 在一些示例中，HVDC系统可以包括互连多个转换器站的HVDC网格和通信地链接到多个测量单元和多个转换器站的控制器。

公开(公告)号：US07272516B2

公开(公告)日：2007-09-18

申请号：US10745122

申请日：2003-12-23

申请人： Zhenyuan Wang ,  Jiuping Pan ,  David Lubkeman ,  Richard E. Brown

发明人： Zhenyuan Wang ,  Jiuping Pan ,  David Lubkeman ,  Richard E. Brown

IPC分类号： G01R21/00

CPC分类号： H02J3/00 ,  H02J2003/007 ,  Y02E60/76 ,  Y04S40/22

摘要： Methodologies adjust a component failure rate for electric power network reliability analysis. A component may include subcomponents and the failure of each subcomponent may be feature dependent. Features are measurable or observable inputs, which can affect the life of one or more subcomponents. The failure rate of a particular component may be obtained according to its real conditions. The methodologies can be used to do condition-based reliability analysis for electric power networks, in order to obtain a maintenance/replacement/operation strategy.

摘要翻译： 方法调整电力网可靠性分析的组件故障率。 组件可以包括子组件，并且每个子组件的故障可以是特征相关的。 特征是可测量的或可观测的输入，可以影响一个或多个子部件的寿命。 特定部件的故障率可以根据实际情况获得。 这些方法可以用于对电力网络进行基于条件的可靠性分析，以获得维护/更换/操作策略。

公开(公告)号：US20140336833A1

公开(公告)日：2014-11-13

申请号：US14341165

申请日：2014-07-25

申请人： Antonis Marinopoulos ,  Heinz Lendenmann ,  Jiuping Pan ,  Kailash Srivastava ,  Mahyar Zarghami ,  Muhamad Reza

发明人： Antonis Marinopoulos ,  Heinz Lendenmann ,  Jiuping Pan ,  Kailash Srivastava ,  Mahyar Zarghami ,  Muhamad Reza

IPC分类号： G06N5/04 ,  G06N99/00 ,  H02P9/00

CPC分类号： G06N5/04 ,  F03D7/048 ,  F03D17/00 ,  F05B2260/821 ,  F05B2270/32 ,  F05B2270/321 ,  G01W1/10 ,  G06N20/00 ,  H02P9/008 ,  H02P2101/15 ,  Y02A90/14 ,  Y02E10/723

摘要： A system for producing electrical power based on wind energy is capable of predicting its power output. The system includes a set of wind turbine units, a first plurality of sensors each adapted to sense at least one wind characteristic at some of the wind turbine units, and a second plurality of sensors remotely located. At least one wind characteristic is estimated at the wind turbines not having one of the first plurality of sensors based on sensing by the first plurality of sensors and an estimate of changes in wind characteristic at wind turbine units caused by presence of other wind turbine units. The magnitude of electrical power production by the set of wind turbine units at at least one predefined point in time in the future is predicted based on the estimated wind characteristics and sensed wind characteristics.

摘要翻译： 基于风能生产电力的系统能够预测其功率输出。 该系统包括一组风力涡轮机单元，第一多个传感器，每个传感器适于感测一些风力涡轮机单元中的至少一个风特性，以及远程定位的第二多个传感器。 在没有基于第一多个传感器的感测的风力涡轮机中不具有第一多个传感器中的一个的风力涡轮机估计至少一个风特性，以及由其他风力涡轮机单元的存在引起的风力涡轮机单元的风特性变化的估计。 基于所估计的风特征和感测到的风特性来预测在未来的至少一个预定时间点的一组风力涡轮机组的电力产量的大小。

公开(公告)号：US09300131B2

公开(公告)日：2016-03-29

申请号：US13309201

申请日：2011-12-01

申请人： Lars Gertmar ,  Dennis Kron ,  Jiuping Pan ,  Yao Chen ,  Richard W. Vesel ,  Arash A. Babaee

发明人： Lars Gertmar ,  Dennis Kron ,  Jiuping Pan ,  Yao Chen ,  Richard W. Vesel ,  Arash A. Babaee

IPC分类号： H02J3/18 ,  H02J1/10

CPC分类号： H02J1/102 ,  H02J3/18 ,  Y10T307/336

摘要： An apparatus for use in an electrical power generation plant. The apparatus includes: at least two adjustable speed drives, each connected, on an alternating current side, to an associated auxiliary motor; at least one reactive power consuming auxiliary device connected to an alternating current bus; a controller; a converter for converting alternating current to direct current or vice versa between the alternating current bus and a direct current bus; and at least one electrical power source arranged to provide power to the direct current bus. Each of the at least two adjustable speed drive is connected, on a direct current side, to the direct current bus.

摘要翻译： 一种用于发电厂的设备。 该装置包括：至少两个可调速驱动器，每个在交流电侧连接到相关联的辅助马达; 连接到交流母线的至少一个无功功率辅助装置; 控制器 用于在交流母线和直流总线之间将交流电转换为直流或反之亦然的转换器; 以及至少一个电源，被布置成向直流母线提供电力。 至少两个可调速驱动器中的每一个在直流侧连接到直流总线。

公开(公告)号：US20120248874A1

公开(公告)日：2012-10-04

申请号：US13502856

申请日：2010-10-22

申请人： Jiuping Pan ,  Cathy-Yao Chen ,  Zhenyuan Wang ,  Lars Gertman

发明人： Jiuping Pan ,  Cathy-Yao Chen ,  Zhenyuan Wang ,  Lars Gertman

IPC分类号： H02J9/00

CPC分类号： H02J11/00 ,  H02J9/00 ,  Y10T307/615

摘要： Apparatus and method for controlling power in an auxiliary power system of a thermal power plant having a generator and one or more auxiliary buses. The apparatus includes adjustable speed drives and capacitance sources for connection to the one or more auxiliary buses and sensors for measuring voltage and reactive power on the one or more auxiliary buses. A controller is operable to control the adjustable speed drives and the capacitance sources to control the power factor of the auxiliary power system, while providing steady state voltage regulation and dynamic voltage support.

摘要翻译： 在具有发电机和一个或多个辅助总线的火力发电厂的辅助电力系统中控制电力的装置和方法。 该装置包括用于连接到一个或多个辅助总线和用于测量一个或多个辅助总线上的电压和无功功率的传感器的可调速驱动器和电容源。 控制器可操作以控制可调速驱动器和电容源来控制辅助电力系统的功率因数，同时提供稳态调节和动态电压支持。

公开(公告)号：US06988092B1

公开(公告)日：2006-01-17

申请号：US10037397

申请日：2001-12-21

申请人： Le Tang ,  Xiaoming Feng ,  David Lubkeman ,  Anil Pahwa ,  Jiuping Pan ,  Lan Trinh ,  Zhenyuan Wang

发明人： Le Tang ,  Xiaoming Feng ,  David Lubkeman ,  Anil Pahwa ,  Jiuping Pan ,  Lan Trinh ,  Zhenyuan Wang

IPC分类号： G06F17/30

CPC分类号： G06Q10/06 ,  G06Q10/06393 ,  Y02P90/82 ,  Y10S707/99931

摘要： A computer implemented method uses a database of detailed, comprehensive utility operating and financial information. The method comprises: (1) feature based matching or similarity based benchmark and focus group selection; (2) a performance assessment procedure comprising multi-perspective analysis; and (3) multi-attribute business profiling and performance improvement potential analysis. As part of the performance assessment step, data corresponding to different utilities in a selected benchmark group are compared with each other to find their strengths and weaknesses. Interpretation of these gaps provides the cause of such gaps. Composite ranking analysis is used so that a composite score of at least one utility business is obtained.

摘要翻译： 计算机实现的方法使用详细，综合的实用程序操作和财务信息的数据库。 该方法包括：（1）基于特征的匹配或基于相似度的基准和焦点组选择; （2）包括多角度分析的绩效评估程序; 和（3）多属性业务剖析和绩效改进潜力分析。 作为绩效评估步骤的一部分，将与所选基准组中的不同实用程序相对应的数据进行比较，以找出其优缺点。 这些差距的解释是造成这种差距的原因。 使用综合排名分析，以获得至少一个公用事业的综合得分。