公开(公告)号：US20140254053A1

公开(公告)日：2014-09-11

申请号：US14355449

申请日：2011-11-01

Applicant: Jianping Wang ,  Jiuping Pan ,  Reynaldo Nuqui

Inventor： Jianping Wang ,  Jiuping Pan ,  Reynaldo Nuqui

IPC: G01R31/08 ,  H02H7/26

CPC classification number: G01R31/088 ,  G01R31/085 ,  H02H7/265

Abstract: 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.

Abstract translation: 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：US20120092904A1

公开(公告)日：2012-04-19

申请号：US13085949

申请日：2011-04-13

Applicant: Reynaldo NUQUI ,  Jiuping PAN ,  Kailash SRIVASTAVA ,  Tomas JONSSON

Inventor： Reynaldo NUQUI ,  Jiuping PAN ,  Kailash SRIVASTAVA ,  Tomas JONSSON

IPC: H02J3/36

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

Abstract: 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.

Abstract translation: 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：US07203622B2

公开(公告)日：2007-04-10

申请号：US10744743

申请日：2003-12-23

Applicant: Jiuping Pan ,  Reynaldo Nuqui ,  Le Tang

Inventor： Jiuping Pan ,  Reynaldo Nuqui ,  Le Tang

IPC: G06F11/30 ,  G06F15/00

CPC classification number: G06Q10/06 ,  H02J3/00 ,  Y04S10/54

Abstract: 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.

Abstract translation: 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

Applicant: Reynaldo Nuqui ,  Jiuping Pan ,  Kailash Srivastava ,  Tomas Jonsson

Inventor： Reynaldo Nuqui ,  Jiuping Pan ,  Kailash Srivastava ,  Tomas Jonsson

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

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

Abstract: 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.

Abstract translation: 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：US20140240880A1

公开(公告)日：2014-08-28

申请号：US14354670

申请日：2012-04-16

Applicant: Yao Chen ,  Guoju Zhang ,  Jiuping Pan ,  Lars Gertmar ,  Rongrong Yu ,  Erich Suter

Inventor： Yao Chen ,  Guoju Zhang ,  Jiuping Pan ,  Lars Gertmar ,  Rongrong Yu ,  Erich Suter

IPC: H02H7/22

CPC classification number: H02H7/22 ,  H02J1/00 ,  H02J11/00

Abstract: The present invention discloses a coordinated control method for power distribution system with DC bus electrification scheme and apparatus thereof. The method comprises: detecting what kind of disturbances occurs, and at least one of following steps: restoring the voltages of the failed DC buses if power loss is detected on the DC buses due to temporary or permanent failures of upstream power supplies; controlling the voltage of the abnormal DC buses if overvoltage or under-voltage is detected on the DC buses due to internal or external disturbances; and supporting the voltages of the abnormal AC buses if overvoltage or under-voltage is detected on the AC buses due to internal or external disturbances. The methods and apparatus can further improve the fault-ride-through capability for power plant under external or internal disturbances, and facilitate smooth automatic switching process between two DC buses etc.

Abstract translation: 本发明公开了一种具有DC总线通电方案及其装置的配电系统的协调控制方法。 该方法包括：检测发生什么样的干扰，以及至少一个以下步骤：由于上游电源的暂时或永久性故障，在DC总线上检测到功率损耗时，恢复故障的直流总线的电压; 由于内部或外部干扰，在直流母线上检测到过电压或欠电压时，控制异常直流母线的电压; 并且由于内部或外部干扰，在AC总线上检测到过电压或欠压时，支持异常AC总线的电压。 该方法和装置可以进一步提高发电厂在外部或内部干扰下的故障穿越能力，并促进两台直流母线之间的平滑自动切换过程。

公开(公告)号：US20130197704A1

公开(公告)日：2013-08-01

申请号：US13363574

申请日：2012-02-01

Applicant: Jiuping PAN ,  Li QI ,  Jun LI ,  Muhamad REZA ,  Kailash SRIVASTAVA

Inventor： Jiuping PAN ,  Li QI ,  Jun LI ,  Muhamad REZA ,  Kailash SRIVASTAVA

IPC: H02J1/12 ,  G06F1/26 ,  H02J3/36

CPC classification number: H02J3/386 ,  H02J3/36 ,  Y02E10/763 ,  Y02E60/60 ,  Y10T307/707

Abstract: Connection schemes for offshore power generation with an internal collection grid include a power generation system which includes a plurality of generator-rectifier subsystems. The scheme further includes a medium voltage DC (MVDC) collection network with positive pole cables and negative pole cables connected to the DC outputs of the generator-rectifier subsystems. At least one offshore substation includes a positive bus bar and a negative bus bar correspondingly connected to the positive pole cables and negative pole cables of the MVDC collection network and a plurality of main DC-DC converters. Each main DC-DC converter includes multiple modules connected to the MVDC bus bars and each module has a positive and a negative output such that the modules' outputs are serially connected to one another. The schemes may also include a high voltage DC (HVDC) transmission system connected to the modules' outputs and at least one DC/AC converter at an onshore substation.

Abstract translation: 具有内部收集网格的海上发电连接方案包括包括多个发电机 - 整流器子系统的发电系统。 该方案还包括一个中压直流（MVDC）收集网络，其中正极电缆和负极电缆连接到发电整流器子系统的直流输出端。 至少一个离岸变电站包括正母线和负母线，其对应地连接到MVDC收集网络的正极电缆和负极电缆以及多个主DC-DC转换器。 每个主DC-DC转换器包括连接到MVDC母线的多个模块，并且每个模块具有正和负输出，使得模块的输出彼此串联。 这些方案还可以包括连接到模块的输出的高压DC（HVDC）传输系统和在岸变电站的至少一个DC / AC转换器。