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    • 2. 发明申请
    • DC CONNECTION SYSTEM FOR RENEWABLE POWER GENERATORS
    • 用于可再生发电机的直流连接系统
    • WO2016018783A1
    • 2016-02-04
    • PCT/US2015/042184
    • 2015-07-27
    • ABB TECHNOLOGY AGPAN, JiupingBALA, Sandeep
    • PAN, JiupingBALA, Sandeep
    • H02J3/36H02J3/38
    • H02J3/386H02J3/36H02J3/381H02J2001/008Y02E10/763Y02E60/60
    • A DC connection system for renewable power generators includes a first monopole DC collection network (112), a second monopole DC collection network (114) and a first bipole transmission system (116). The first monopole DC collection network (112) aggregates positive-valued DC voltage outputs of a first cluster of renewable power generators (100) onto a positive terminal (Udc+) of the first monopole DC collection network (112). The second monopole DC collection network (114) aggregates negative-valued DC voltage outputs of a second cluster of renewable power generators (102) onto a negative terminal (Udc-) of the second monopole DC collection network (114). The first bipole transmission system (116) is coupled to the positive and negative terminals (Udc+, Udc-) of the monopole DC collection networks (112, 114), for transferring the aggregated power to a power grid substation (104).
    • 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(112),第二单极DC收集网络(114)和第一双极传输系统(116)。 第一单极DC收集网络112将可再生发电机组(100)的第一簇的正值DC电压输出聚合到第一单极DC收集网络(112)的正极端子(Udc +)上。 第二单极DC收集网络(114)将第二可再生能量发电机组(102)的负值DC电压输出聚合到第二单极DC收集网络(114)的负极端子(Udc-)上。 第一双极传输系统(116)耦合到单极DC收集网络(112,114)的正极和负极(Udc +,Udc-),用于将聚集的功率传送到电网变电站(104)。
    • 3. 发明申请
    • TURBINE-BASED ENERGY GENERATION SYSTEM WITH DC OUTPUT
    • 基于涡轮机的直流输出能量发电系统
    • WO2014109992A1
    • 2014-07-17
    • PCT/US2014/010360
    • 2014-01-06
    • ABB TECHNOLOGY AGBALA, SandeepPAN, JiupingCARR, Joseph A.
    • BALA, SandeepPAN, JiupingCARR, Joseph A.STEIMER, PeterAPELDOORN, OscarLINDER, Stefan
    • H02J3/38H02M7/483
    • H02K47/02H02J3/386H02M7/483H02M2007/4835Y02E10/763
    • An energy generation system includes a turbine (102), an electric generator (100), a step-up transformer (106), and a converter (104). The turbine (102) is operable to extract energy from a fluid flow and convert the extracted energy into mechanical energy. The electric generator (100) is operable to convert the mechanical energy from the turbine (102) into AC electrical energy. The step-up transformer (106) is operable to transfer the AC electrical energy at a lower voltage from the electric generator (100) to a higher voltage. The converter (104) is operable to convert the AC electrical energy at the higher voltage to DC electrical energy. The converter (104) includes a converter leg (110) for a phase of the AC electrical energy. The converter leg (110) has an upper arm with a first plurality of sub-modules (112) and a lower arm with a second plurality of sub-modules (114). Each sub-module (112, 114) is operable to function as a controlled voltage source.
    • 能量生成系统包括涡轮机(102),发电机(100),升压变压器(106)和转换器(104)。 涡轮(102)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(100)可操作以将来自涡轮(102)的机械能转换成AC电能。 升压变压器(106)可操作以将来自发电机(100)的较低电压的交流电能传递到更高的电压。 转换器(104)可操作以将较高电压处的AC电能转换成DC电能。 转换器(104)包括用于AC电能的相位的转换器支脚(110)。 转换器支脚(110)具有具有第一多个子模块(112)的上臂和具有第二多个子模块(114)的下臂。 每个子模块(112,114)可操作以用作受控电压源。
    • 5. 发明申请
    • PROTECTION DEVICE FOR DC COLLECTION SYSTEMS
    • 直流收集系统的保护装置
    • WO2015175346A1
    • 2015-11-19
    • PCT/US2015/029954
    • 2015-05-08
    • ABB TECHNOLOGY AGQI, LiLIANG, JiaqiPAN, Jiuping
    • QI, LiLIANG, JiaqiPAN, Jiuping
    • H02H3/087H02H3/18H02H7/26
    • H02H3/087H02H3/18H02H7/268
    • A protection device (100/300) includes a diode (102) having its forward direction in a normal power flow of a region of a DC collection system, a first switch (104) in parallel with the diode (102), a second switch (106) in series with the diode (102) and a control unit (108) for controlling the switches (104, 106). The first switch (104) can be opened so that current can flow through the diode (102) in the forward direction without the first switch (104) bypassing the diode (102), and closed if no current is flowing through the diode (102) in the forward direction and power is needed upstream of the diode (102). The second switch (106) can be closed so that current can flow through the diode (102) in the forward direction to an AC grid interface of the DC collection system, and opened if no current is flowing through the diode (102) in the forward direction due to a fault in a DC feeder ('Feeder 1', 'Feeder 2') to which the protection device (100/300) is coupled.
    • 保护装置(100/300)包括二极管(102),其二极管(102)具有在DC收集系统的区域的正常功率流中的正向,与二极管(102)并联的第一开关(104),第二开关 (106)和二极管(102)串联的控制单元(108),用于控制开关(104,106)。 可以打开第一开关(104),使得电流可以在正向方向上流过二极管(102),而不会绕过二极管(102)的第一开关(104),并且如果没有电流流经二极管(102),则闭合 )并且在二极管(102)的上游需要功率。 第二开关(106)可以被关闭,使得电流可以在正向方向上流过二极管(102)到DC收集系统的AC电网接口,并且如果没有电流流经二极管(102) 由于保护装置(100/300)耦合到的直流馈线(“馈线1”,馈线2“)发生故障的正向。
    • 6. 发明申请
    • DC CONNECTION SCHEME FOR WINDFARM WITH INTERNAL MVDC COLLECTION GRID
    • 具有内部MVDC收集网的WINDFARM直流连接方案
    • WO2013116586A3
    • 2014-07-10
    • PCT/US2013024254
    • 2013-02-01
    • ABB RESEARCH LTDPAN JIUPINGQI LILI JUNREZA MUHAMADSRIVASTAVA KAILASH
    • PAN JIUPINGQI LILI JUNREZA MUHAMADSRIVASTAVA KAILASH
    • H02J3/38
    • H02J3/386H02J3/36Y02E10/763Y02E60/60Y10T307/707
    • Connection schemes for offshore power generation with an internal collection grid include a power generation system (22) which includes a plurality of generator-rectifier subsystems (23). The scheme further includes a medium voltage DC (MVDC) collection network with positive pole cables (42) and negative pole cables (44) connected to the DC outputs of the generator-rectifier subsystems (23). At least one offshore substation (50) includes a positive bus bar (54) and a negative bus bar (56) correspondingly connected to the positive pole cables (42) and negative pole cables (44) of the MVDC collection network and a plurality of main DC-DC converters (58). Each main DC-DC converter (58) includes modules connected to the MVDC bus bars (54, 56) and each module has a positive and a negative output with the modules' outputs serially connected to one another. The schemes may also include a high voltage DC transmission system connected to the modules' outputs and at least one DC/AC converter at a substation.
    • 具有内部收集网格的用于海上发电的连接方案包括:发电系统(22),其包括多个发电机 - 整流器子系统(23)。 该方案还包括一个具有正极电缆(42)和连接到发电整流器子系统(23)的直流输出的负极电缆(44)的中压DC(MVDC)收集网络。 至少一个离岸变电站(50)包括相应地连接到MVDC收集网络的正极电缆(42)和负极电缆(44)的正母线(54)和负母线(56),并且多个 主DC-DC转换器(58)。 每个主DC-DC转换器(58)包括连接到MVDC母线(54,56)的模块,并且每个模块具有正和负输出,模块的输出彼此串联连接。 这些方案还可以包括连接到模块输出的高压DC传输系统和变电站处的至少一个DC / AC转换器。
    • 9. 发明申请
    • METHOD AND APPARATUS FOR THE PROTECTION OF DC DISTRIBUTION SYSTEMS
    • 用于保护直流分布系统的方法和装置
    • WO2015143215A1
    • 2015-09-24
    • PCT/US2015/021565
    • 2015-03-19
    • ABB TECHNOLOGY AGQI, LiPAN, Jiuping
    • QI, LiPAN, Jiuping
    • H02H3/087H02H7/28H02H3/093
    • H02H7/268H02H3/087H02H3/0935H02H7/28
    • 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.
    • 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,在这里的教导的一个方面,对于一个或多个受保护的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。