公开(公告)号：US20150333504A1

公开(公告)日：2015-11-19

申请号：US14278832

申请日：2014-05-15

申请人： ABB Technology AG

发明人： Li Qi ,  Jiaqi Liang ,  Jiuping Pan

IPC分类号： H02H7/26

CPC分类号： H02H3/087 ,  H02H3/18 ,  H02H7/268

摘要： A protection device includes a diode having its forward direction in a normal power flow of a region of a DC collection system, a first switch in parallel with the diode, a second switch in series with the diode and a control unit for controlling the switches. The first switch can be opened so that current can flow through the diode in the forward direction without the first switch bypassing the diode, and closed if no current is flowing through the diode in the forward direction and power is needed upstream of the diode. The second switch can be closed so that current can flow through the diode in the forward direction to an AC grid interface of the DC collection system, and opened if no current is flowing through the diode in the forward direction due to a fault in a DC feeder to which the device is coupled.

摘要翻译： 一种保护装置包括二极管，其二极管在直流回路系统的区域的正常功率流中具有正向，与二极管并联的第一开关，与二极管串联的第二开关和用于控制开关的控制单元。 可以打开第一开关，使得电流可以在正向方向上流过二极管而不使第一开关旁路二极管，并且如果没有电流正向流过二极管并且在二极管的上游需要功率，则闭合。 可以关闭第二开关，使得电流可以正向流过二极管，直到DC收集系统的AC电网接口，如果没有电流由于DC中的故障而在正向流过二极管，则开路 馈送器，设备耦合到该馈线。

公开(公告)号：US09748762B2

公开(公告)日：2017-08-29

申请号：US14255674

申请日：2014-04-17

申请人： ABB Technology AG

发明人： Li Qi ,  Jiuping Pan

IPC分类号： H02H7/26 ,  H02H3/087 ,  H02H3/093 ,  H02H7/28

CPC分类号： H02H7/268 ,  H02H3/087 ,  H02H3/0935 ,  H02H7/28

摘要： While transient current magnitudes at different locations within a DC distribution system themselves are not a reliable indicator of fault location, it is recognized herein that accumulating energy or pseudo energy values provides a reliable basis for tripping the protection element at a fault location. Thus, in one aspect of the teachings herein, pseudo energy values are accumulated independently during a fault condition, for each of one or more protected branch circuits and the protection element for each such branch circuit is tripped responsive to the accumulated pseudo energy values reaching a defined pseudo energy threshold. The pseudo energy thresholds are defined so that the protection element in the branch circuit where the fault is located will trip first.

公开(公告)号：US20150260163A1

公开(公告)日：2015-09-17

申请号：US14490311

申请日：2014-09-18

申请人： ABB Technology AG

发明人： Debrup Das ,  Jiaqi Liang ,  Darren Tremelling ,  Jiuping Pan

IPC分类号： F03D9/00 ,  H02M5/22 ,  H02J3/38

CPC分类号： H02M5/22 ,  F03D9/257 ,  F03D15/10 ,  H02J3/34 ,  H02J3/38 ,  H02J3/386 ,  Y02E10/763 ,  Y10T307/664

摘要： According to one aspect of the teachings herein, a system for obtaining electricity from wind turbines provides advantageous operation with respect to offshore wind turbines where the size and weight of electricity generation and collection equipment are key considerations. The contemplated system includes an apparatus that is configured for collecting wind-generated electricity at a fixed low frequency and at a desired collection voltage, based on the advantageous configuration and use of a modular multilevel converter or MMC.

摘要翻译： 根据本文的教导的一个方面，用于从风力涡轮机获得电力的系统提供了关于发电和收集设备的尺寸和重量是关键考虑的海上风力涡轮机的有利操作。 所设想的系统包括一种被配置为基于模块化多电平转换器或MMC的有利配置和使用以固定的低频和期望的收集电压收集风力发电的装置。

公开(公告)号：US20150260162A1

公开(公告)日：2015-09-17

申请号：US14253590

申请日：2014-04-15

申请人： ABB TECHNOLOGY AG

发明人： Jiuping Pan ,  Debrup Das ,  Xiaoming Feng

IPC分类号： F03D9/00 ,  H02J3/38

CPC分类号： H02J3/38 ,  F03D9/257 ,  H02J3/34 ,  H02J3/386 ,  Y02E10/725 ,  Y02E10/727 ,  Y02E10/763 ,  Y10T307/664

摘要： According to one aspect of the teachings herein, various feeder connection arrangements and architectures are disclosed, for collecting electricity from wind turbines in an offshore collection grid that operates at a fixed low frequency, e.g., at one third of the targeted utility grid frequency. Embodiments herein detail various feeder arrangements, such as the use of parallel feeder connections and cluster-based feeder arrangements where a centralized substation includes a common step-up transformer for outputting electricity at a stepped-up voltage, for low-frequency transmission to onshore equipment. Further aspects relate to advantageous generation arrangements, e.g., tower-based arrangements, for converting wind power into electrical power using, for example, medium-speed or high-speed gearboxes driving generators having a rated electrical frequency for full-power output in a range from about 50 Hz to about 150 Hz, with subsequent conversion to the fixed low frequency for off-shore collection.

摘要翻译： 根据本文的教导的一个方面，公开了各种馈线连接装置和架构，用于从海上采集电网中的风力涡轮机收集电力，其以固定的低频（例如，目标公用电网频率的三分之一）运行。 本文中的实施例详细描述了各种馈送器布置，例如使用平行馈线连接和基于群集的馈线布置，其中集中式变电站包括用于以升压电压输出电力的公共升压变压器，用于对陆上设备的低频传输 。 另外的方面涉及有利的生成布置，例如基于塔架的布置，用于使用例如具有在一个范围内的全功率输出的额定电频率的中速或高速齿轮箱驱动发电机将风力转换成电力 从约50Hz到约150Hz，随后转换到固定的低频用于离岸收集。

公开(公告)号：US20140197639A1

公开(公告)日：2014-07-17

申请号：US13740359

申请日：2013-01-14

申请人： ABB TECHNOLOGY AG

发明人： Sandeep Bala ,  Jiuping Pan ,  Joseph A. Carr ,  Peter Steimer ,  Oscar Apeldoorn ,  Stefan Linder

IPC分类号： H02K47/02

CPC分类号： H02K47/02 ,  H02J3/386 ,  H02M7/483 ,  H02M2007/4835 ,  Y02E10/763

摘要： An energy generation system includes a turbine, an electric generator, a step-up transformer, and a converter. The turbine is operable to extract energy from a fluid flow and convert the extracted energy into mechanical energy. The electric generator is operable to convert the mechanical energy from the turbine into AC electrical energy. The step-up transformer is operable to transfer the AC electrical energy at a lower voltage from the electric generator to a higher voltage. The converter is operable to convert the AC electrical energy at the higher voltage to DC electrical energy. The converter includes a converter leg for a phase of the AC electrical energy. The converter leg has an upper arm with a first plurality of sub-modules and a lower arm with a second plurality of sub-modules. Each sub-module is operable to function as a controlled voltage source.

摘要翻译： 能量发生系统包括涡轮机，发电机，升压变压器和转换器。 涡轮可操作以从流体流提取能量并将提取的能量转换成机械能。 发电机可操作以将来自涡轮机的机械能转换为交流电能。 升压变压器可操作地将来自发电机的较低电压的交流电能传递到更高的电压。 转换器可操作以将较高电压处的AC电能转换为DC电能。 该转换器包括用于AC电能的相位的转换器支路。 转换器支腿具有具有第一多个子模块的上臂和具有第二多个子模块的下臂。 每个子模块可操作以用作受控电压源。

公开(公告)号：US09859806B2

公开(公告)日：2018-01-02

申请号：US14490311

申请日：2014-09-18

申请人： ABB Technology AG

发明人： Debrup Das ,  Jiaqi Liang ,  Darren Tremelling ,  Jiuping Pan

IPC分类号： H02M5/22 ,  H02J3/38 ,  H02J3/34 ,  F03D9/25

CPC分类号： H02M5/22 ,  F03D9/257 ,  F03D15/10 ,  H02J3/34 ,  H02J3/38 ,  H02J3/386 ,  Y02E10/763 ,  Y10T307/664

摘要： According to one aspect of the teachings herein, a system for obtaining electricity from wind turbines provides advantageous operation with respect to offshore wind turbines where the size and weight of electricity generation and collection equipment are key considerations. The contemplated system includes an apparatus that is configured for collecting wind-generated electricity at a fixed low frequency and at a desired collection voltage, based on the advantageous configuration and use of a modular multilevel converter or MMC.

公开(公告)号：US09735581B2

公开(公告)日：2017-08-15

申请号：US14253590

申请日：2014-04-15

申请人： ABB Technology AG

发明人： Jiuping Pan ,  Debrup Das ,  Xiaoming Feng

IPC分类号： H02J3/38 ,  F03D9/00 ,  H02J3/34 ,  F03D9/25

CPC分类号： H02J3/38 ,  F03D9/257 ,  H02J3/34 ,  H02J3/386 ,  Y02E10/725 ,  Y02E10/727 ,  Y02E10/763 ,  Y10T307/664

摘要： According to one aspect of the teachings herein, various feeder connection arrangements and architectures are disclosed, for collecting electricity from wind turbines in an offshore collection grid that operates at a fixed low frequency, e.g., at one third of the targeted utility grid frequency. Embodiments herein detail various feeder arrangements, such as the use of parallel feeder connections and cluster-based feeder arrangements where a centralized substation includes a common step-up transformer for outputting electricity at a stepped-up voltage, for low-frequency transmission to onshore equipment. Further aspects relate to advantageous generation arrangements, e.g., tower-based arrangements, for converting wind power into electrical power using, for example, medium-speed or high-speed gearboxes driving generators having a rated electrical frequency for full-power output in a range from about 50 Hz to about 150 Hz, with subsequent conversion to the fixed low frequency for off-shore collection.

公开(公告)号：US20160036221A1

公开(公告)日：2016-02-04

申请号：US14448294

申请日：2014-07-31

申请人： ABB Technology AG

发明人： Jiuping Pan ,  Sandeep Bala

IPC分类号： H02J1/08

CPC分类号： H02J3/386 ,  H02J3/36 ,  H02J3/381 ,  H02J2001/008 ,  Y02E10/763 ,  Y02E60/60

摘要： A DC connection system for renewable power generators includes a first monopole DC collection network, a second monopole DC collection network and a first bipole transmission system. The first monopole DC collection network aggregates positive-valued DC voltage outputs of a first cluster of renewable power generators onto a positive terminal of the first monopole DC collection network. The second monopole DC collection network aggregates negative-valued DC voltage outputs of a second cluster of renewable power generators onto a negative terminal of the second monopole DC collection network. The first bipole transmission system is coupled to the positive and negative terminals of the monopole DC collection networks, for transferring the aggregated power to a power grid substation.

摘要翻译： 用于可再生能源发电机的DC连接系统包括第一单极DC收集网络，第二单极DC收集网络和第一双极传输系统。 第一单极DC收集网络将第一集群的可再生发电机的正值DC电压输出聚合到第一单极DC收集网络的正极上。 第二单极DC收集网络将第二组可再生发电机的负值DC电压输出聚合到第二单极DC收集网络的负极端子上。 第一双极传输系统耦合到单极DC收集网络的正极和负极端子，用于将聚集的电力传送到电网变电站。

公开(公告)号：US20150270704A1

公开(公告)日：2015-09-24

申请号：US14255674

申请日：2014-04-17

申请人： ABB Technology AG

发明人： Li Qi ,  Jiuping Pan

IPC分类号： H02H7/26

CPC分类号： H02H7/268 ,  H02H3/087 ,  H02H3/0935 ,  H02H7/28

摘要： While transient current magnitudes at different locations within a DC distribution system themselves are not a reliable indicator of fault location, it is recognized herein that accumulating energy or pseudo energy values provides a reliable basis for tripping the protection element at a fault location. Thus, in one aspect of the teachings herein, pseudo energy values are accumulated independently during a fault condition, for each of one or more protected branch circuits and the protection element for each such branch circuit is tripped responsive to the accumulated pseudo energy values reaching a defined pseudo energy threshold. The pseudo energy thresholds are defined so that the protection element in the branch circuit where the fault is located will trip first.

摘要翻译： 虽然在DC分配系统本身内的不同位置处的瞬态电流幅度不是故障定位的可靠指标，但是这里可以认识到，累积能量或伪能量值为故障位置处的保护元件跳闸提供了可靠的依据。 因此，在本文的教导的一个方面，对于一个或多个受保护分支电路中的每一个，在故障状态期间独立地累加伪能量值，并且对于每个这样的分支电路的保护元件响应于累积的伪能量值达到 定义的伪能量阈值。 定义伪能量阈值，使得故障所在的分支电路中的保护元件首先跳闸。

公开(公告)号：US09419428B2

公开(公告)日：2016-08-16

申请号：US14278832

申请日：2014-05-15

申请人： ABB Technology AG

发明人： Li Qi ,  Jiaqi Liang ,  Jiuping Pan

IPC分类号： H02H7/26 ,  H02H3/087 ,  H02H3/18

CPC分类号： H02H3/087 ,  H02H3/18 ,  H02H7/268

摘要： A protection device includes a diode having its forward direction in a normal power flow of a region of a DC collection system, a first switch in parallel with the diode, a second switch in series with the diode and a control unit for controlling the switches. The first switch can be opened so that current can flow through the diode in the forward direction without the first switch bypassing the diode, and closed if no current is flowing through the diode in the forward direction and power is needed upstream of the diode. The second switch can be closed so that current can flow through the diode in the forward direction to an AC grid interface of the DC collection system, and opened if no current is flowing through the diode in the forward direction due to a fault in a DC feeder to which the device is coupled.

摘要翻译： 一种保护装置包括二极管，其二极管在直流回路系统的区域的正常功率流中具有正向，与二极管并联的第一开关，与二极管串联的第二开关和用于控制开关的控制单元。 可以打开第一开关，使得电流可以在正向方向上流过二极管而不使第一开关旁路二极管，并且如果没有电流正向流过二极管并且在二极管的上游需要功率，则闭合。 可以关闭第二开关，使得电流可以正向流过二极管，直到DC收集系统的AC电网接口，如果没有电流由于DC中的故障而在正向流过二极管，则开路 馈送器，设备耦合到该馈线。