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    • 4. 发明公开
    • DIRECT CURRENT POWER TRANSMISSION GRID
    • 直流电力传输网格
    • EP3267544A1
    • 2018-01-10
    • EP16178684.3
    • 2016-07-08
    • General Electric Technology GmbH
    • BRIFF, PabloBARKER, Carl DavidKING, RosemaryMORENO MUNOZ, Francisco Jose
    • H02J1/08H02J1/10H02J3/36
    • H02J1/08H02J1/102H02J3/36Y02E60/60
    • A power transmission network comprises:
      a plurality of converters (10, 12, 14) interconnected via a plurality of electrical elements;
      at least one power flow router (16), the or each power flow router (16) being operatively connected to at least one of the plurality of electrical elements, the or each power flow router (16) being configured to be controllable to selectively control current flow (I 1 , I 2 , I 3 , I 12 , I 13 , I 23 ) in at least one of the plurality of electrical elements so as to direct power between two or more of the plurality of converters (10, 12, 14); and
      a controller (38) configured to selectively control the plurality of converters (10, 12, 14) and the or each power flow router (16) to control power flow in the power transmission network;
      wherein the controller (38) is configured to:
      carry out a first mathematical optimisation to determine one or more optimal operating set points of one or more of the converters;
      after carrying out the first mathematical optimisation, carry out a second mathematical optimisation to determine one or more optimal current flows (I 1 , I 2 , I 3 , I 12 , I 13 , I 23 ) in the plurality of electrical elements; and
      control the one or more of the converters in accordance with the or each determined optimal operating set point, and control the power flow router (16) or at least one of the power flow routers (16) to achieve the or each determined optimal current flow(I 1 , I 2 , I 3 , I 12 , I 13 , I 23 ) in the plurality of electrical elements.
    • 一种电力传输网络,包括:经由多个电气元件互连的多个转换器(10,12,14) 至少一个电力电量路由器(16),所述电力电量路由器或每个电力电量路由器(16)可操作地连接到所述多个电气元件中的至少一个,所述或每个电力电量路由器(16)被配置为可控制以选择性地控制 在所述多个电气元件中的至少一个电气元件中的电流(I1,I2,I3,I12,I13,I23),以便在所述多个变换器(10,12,14)中的两个或更多个之间引导电力。 以及控制器(38),其被配置为选择性地控制所述多个转换器(10,12,14)和所述或每个电力潮流路由器(16)以控制所述电力传输网络中的电力流动; 其中所述控制器(38)配置成:执行第一数学优化以确定一个或多个所述转换器的一个或多个最佳操作设定点; 在执行第一数学优化之后,执行第二数学优化以确定所述多个电气元件中的一个或多个最佳电流流动(I1,I2,I3,I12,I13,I23) 并且根据所述或每个确定的最优操作设定点来控制所述一个或多个转换器,并且控制所述电力电量路由器(16)或所述电力电量路由器(16)中的至少一个以实现所述或每个确定的最优电流 在多个电气元件中流动(I1,I2,I3,I12,I13,I23)。
    • 5. 发明公开
    • POWER TRANSMISSION NETWORK
    • 电力传输网络
    • EP3070806A1
    • 2016-09-21
    • EP15275078.2
    • 2015-03-19
    • General Electric Technology GmbH
    • ADAMCZYK, AndrzejBARKER, Carl DavidWHITEHOUSE, Robert Stephen
    • H02J3/36H02M7/757
    • A power transmission network, for interconnecting at least one variable power source (28) and at least one AC electrical network (30), comprises:
      at least one DC transmission link (20) for DC power transmission between at least one network side converter (24) and at least one source side converter (24);
      at least one AC transmission link (26) for AC power transmission from the or the respective variable power source (28) to at least one source side converter (24);
      at least one source side converter (24) including: a DC connecting point operably connected to the or the respective DC transmission link (20); and an AC connecting point operably connected to the or the respective AC transmission link (26);
      at least one network side converter (22) including: an AC connecting point for connection to the or the respective AC electrical network (30); and a DC connecting point operably connected to the or the respective DC transmission link (20); and
      a control system (32a,32b,34),
      wherein at least one network side converter (22) is designated as a first converter, and the control system (32a,32b,34) is configured to operate the or each first converter in a DC voltage control mode as a DC slack bus to vary a DC voltage at its DC connecting point with respect to the power generated by the or the respective variable power source (28).
    • 一种用于互连至少一个可变电源(28)和至少一个AC电网(30)的电力传输网络,包括:至少一个DC传输链路(20),用于在至少一个网络侧转换器 24)和至少一个源侧转换器(24); 至少一个AC传输链路(26),用于从所述或各个可变电源(28)到至少一个源侧转换器(24)的AC电力传输; 至少一个电源侧转换器(24),包括:可操作地连接到所述或各个DC传输链路(20)的DC连接点; 和可操作地连接到所述或各个AC传输链路(26)的AC连接点; 至少一个网络侧转换器(22),包括:AC连接点,用于连接到所述或各个AC电网(30); 和可操作地连接到所述或各个DC传输链路(20)的DC连接点; 和控制系统(32a,32b,34),其中至少一个网络侧转换器(22)被指定为第一转换器,并且控制系统(32a,32b,34)被配置为将所述或每个第一转换器 作为DC松弛总线的DC电压控制模式,以相对于由所述或各个可变电源(28)产生的电力在其DC连接点处改变DC电压。
    • 7. 发明公开
    • ELECTRIC PROTECTION ON AC SIDE OF HVDC
    • 电器保护交流高压直流输电的SIDE
    • EP3036813A1
    • 2016-06-29
    • EP14753249.3
    • 2014-08-19
    • General Electric Technology GmbH
    • BARKER, Carl DavidCANELHAS, Andre Paulo
    • H02J3/36H02H3/08
    • H02J3/36H02H7/1213H02H7/1252H02H7/1257H02M1/32H02M5/458Y02E60/60
    • In the field of high voltage power transmission an electrical assembly (10; 60) comprises a power converter (12) which includes first and second DC terminals (14, 16) that are connectable to a DC network (18), and an AC terminal (20) that is connectable to an AC network (22). The electrical assembly (10) also includes a grounding circuit (24) to connect the AC terminal (20) to ground (26). The grounding circuit (24) defines first and second current flow paths (28, 30) between the AC terminal (20) and ground (26). The first current flow path (28) includes a switching element (32) that is operable to selectively open and close the first current flow path (28). The second current flow path (30) includes a first current flow control element (34) that is configured to operate in a first mode in which it minimises the flow of current through the second current flow path (30) when the first current flow path (28) is open and thereby minimises the flow of current between the AC terminal (20) and ground (26) when the first current flow path (28) is open. The electrical assembly (10) additionally includes a control unit (42) operatively connected to the switching element (32), the control unit (42) being configured to operate the switching element (32) to maintain open the first current flow path (28) following an occurrence of a DC network fault. The power converter (12) is configured to continue transferring power between the DC and AC networks (18,22) throughout the DC network fault
    • 10. 发明公开
    • VOLTAGE LIMITER
    • SPANNUNGSBEGRENZER
    • EP3022815A1
    • 2016-05-25
    • EP14739135.3
    • 2014-07-10
    • General Electric Technology GmbH
    • BARKER, Carl DavidCANELHAS, Andre PauloADAMCZYK, Andrzej
    • H02H9/04H02H9/00
    • H02H9/045H02H7/268H02H9/041H02J1/06
    • A voltage limiter (40), for controlling a voltage of a DC power transmission medium (28), comprises: first and second DC terminals (42, 44), the first DC terminal (42) being operatively connectable to the DC power transmission medium (28), the second DC terminal (44) being operatively connectable to ground; a current transmission path (46) extending between the first and second DC terminals (42, 44) and including first and second current transmission path portions (48, 50), the first and second current transmission path portions (48, 50) being connected in series between the first and second DC terminals (42, 44), the first current transmission path portion (48) including a first non-linear resistive element (52), the second current transmission path portion (50) including a second non-linear resistive element (54); a current bypass limb (56) connected in parallel with the second current transmission path portion (50), the current bypass limb (56) including at least one switching element (58a); and a control unit (60) configured to control switching of the or each switching element (58a) of the current bypass limb (56) being switchable to selectively switch the current bypass limb (56), during a fault condition of the DC power transmission medium (28), from a first mode to a second mode, wherein the current bypass limb (56) in the first mode permits a current flowing between the first and second DC terminals (42, 44) to flow through the current bypass limb (56) and thereby bypass the second current transmission path portion (50); and the current bypass limb (56) in the second mode inhibits a current flowing between the first and second DC terminals (42, 44) from flowing through the current bypass limb (56) and thereby permits the current flowing between the first and second DC terminals (42, 44) to flow through the second current transmission path portion (50).
    • 电压限制器分别包括可连接到DC电力传输介质和地的第一和第二DC端子。 电压限制器还包括:(1)电流传输路径,包括串联在端子之间的两个部分,每个包括非线性电阻元件; (2)与所述第二部分并联连接并且包括至少一个开关元件的电流旁路臂; 以及(3)控制单元,被配置为控制所述开关元件或每个开关元件的切换以在故障状态期间选择性地将当前旁路臂从第一模式切换到第二模式。 在第一模式中,电流流过电流旁路支路并绕过第二电流传输路径部分。 在第二模式中,禁止DC端子之间的电流流过电流旁路臂,从而允许电流流过第二部分。