公开(公告)号：US09859705B2

公开(公告)日：2018-01-02

申请号：US14404273

申请日：2013-05-31

Applicant: ALSTOM Technology Ltd

Inventor： Robert Whitehouse ,  Carl David Barker

IPC: H02J1/00 ,  H02J3/36 ,  H02J1/14 ,  H02J1/10

CPC classification number: H02J1/00 ,  H02J1/14 ,  H02J3/36 ,  H02J2001/106 ,  Y02E60/60 ,  Y10T307/352

Abstract: A current flow controller (10) comprising: a plurality of terminals (12a, 12b, 14a, 14b) for connection, in use, to a plurality of DC power transmission medium (16,18) such that each DC power transmission medium (16,18) is connected to at least one of the plurality of terminals (12a, 12b, 14a, 14b); and a current flow control unit interconnecting the plurality of terminals (12a, 12b, 14a, 14b), the current flow control unit including a plurality of current flow control sub-units (20, 22, 23) each of which is, in use, connected to a respective DC power transmission medium (16, 18), each current flow control sub-unit (20, 22, 23) including at least one switching element (24, 28), the or each switching element (24, 28) of each current flow control sub-unit (20, 22, 23) being connected to the same energy storage device (26; 56) to selectively provide a voltage source, and a switching control unit (100) to control switching of each switching element (24, 28) of the current flow control unit to selectively inject a voltage drop (V1, V2), in use, into each DC power transmission medium (16,18) so as to simultaneously regulate current flow (I1, I2) in each DC power transmission medium (16, 18) and divert energy from at least one DC power transmission medium (16, 18) into at least one other DC power transmission medium (16, 18) via the current flow control unit.

公开(公告)号：US20150340859A1

公开(公告)日：2015-11-26

申请号：US14402648

申请日：2013-05-16

Applicant: ALSTOM Technology Ltd

Inventor： Carl David Barker

IPC: H02H7/22

CPC classification number: H02H7/22 ,  H02H3/07 ,  H02H7/12 ,  H02H7/268 ,  H02H11/00 ,  H02J3/36 ,  H02M2007/4835 ,  Y02E60/60

Abstract: There is a method of fault clearance for a voltage source converter that interconnects a DC network and an AC network. The voltage source converter is connected to the DC network via one or more DC circuit interruption devices. The method comprises the steps of: (a) detecting a fault in the DC network; (b) carrying out a primary protection sequence, wherein the step of carrying out the primary protection sequence involves carrying out a first sub-sequence that includes the steps of: i. opening the or each DC circuit interruption device, ii. setting a DC power order of the voltage source converter to zero, iii. controlling the voltage source converter to exchange re-circuit breaker active power with the AC network.

Abstract translation: 对于连接DC网络和AC网络的电压源转换器，存在故障排除的方法。 电压源转换器经由一个或多个DC电路中断装置连接到DC网络。 该方法包括以下步骤：（a）检测直流网络中的故障; （b）执行主保护序列，其中执行主保护序列的步骤涉及执行包括以下步骤的第一子序列：i。 打开或每个DC电路中断装置，ii。 将电压源转换器的直流电源次序设置为零，iii。 控制电压源转换器与交流网络交换断路器有功功率。

公开(公告)号：US09306384B2

公开(公告)日：2016-04-05

申请号：US14382532

申请日：2013-02-26

Applicant: ALSTOM Technology Ltd

Inventor： Robert Whitehouse ,  Carl David Barker

IPC: H02H7/00 ,  H02H7/26 ,  H02H3/06

CPC classification number: H02H7/268 ,  H02H3/06 ,  H02H7/261 ,  H02H9/02

Abstract: There is a method of fault clearance for a DC power grid (10), wherein the DC power grid (10) includes: a plurality of DC terminals (12a,12b,12c,12d); a plurality of DC power transmission media (14a,14b, 14c,14d) to interconnect the plurality of DC terminals (12a, 12b, 12c, 12d); and a plurality of DC circuit interruption device stations (18), each DC circuit interruption device station (18) being associated with a respective one of the plurality of DC power transmission media (14a,14b, 14c, 14d) and a respective one of the plurality of DC terminals (12a, 12b,12c, 12d), each DC circuit interruption device station (18) including a DC circuit interruption device (20) to selectively interrupt current flow in the associated DC power transmission medium (14a, 14b, 14c, 14d), the method comprising the steps of: (i) detecting one or more faults occurring in the plurality of DC power transmission media (14a, 14b, 14c,14d); (ii) after detecting the or each fault, opening all of the DC circuit interruption devices (20) to interrupt current flow in the plurality of DC power transmission media (14a,14b, 14c,14d); (iii) measuring electrical characteristics of each DC power transmission medium (14a, 14b, 14c,14d); (iv) identifying the or each faulty DC power transmission medium (14a, 14b, 14c, 14d), in which the or each fault is located, based on the measured electrical characteristics of the plurality of DC power transmission media (14a, 14b, 14c, 14d); and (v) after identifying the or each faulty DC power transmission medium (14a, 14b, 14c, 14d) in which the or each fault is located, inhibiting closing of the or each DC circuit interruption device (20) that is associated with the or each faulty DC power transmission medium (14a,14b, 14c,14d), in which the or each fault is located, and closing the or each DC circuit interruption device (20) that is associated with the or each non-faulty DC power transmission medium (14a, 14b, 14c, 14d), in which the or each fault is not located.

公开(公告)号：US20150116876A1

公开(公告)日：2015-04-30

申请号：US14382532

申请日：2013-02-26

Applicant: ALSTOM TECHNOLOGY LTD.

Inventor： Robert Whitehouse ,  Carl David Barker

IPC: H02H7/26

CPC classification number: H02H7/268 ,  H02H3/06 ,  H02H7/261 ,  H02H9/02

Abstract: There is a method of fault clearance for a DC power grid (10), wherein the DC power grid (10) includes: a plurality of DC terminals (12a,12b,12c,12d); a plurality of DC power transmission media (14a,14b, 14c,14d) to interconnect the plurality of DC terminals (12a, 12b, 12c, 12d); and a plurality of DC circuit interruption device stations (18), each DC circuit interruption device station (18) being associated with a respective one of the plurality of DC power transmission media (14a,14b, 14c, 14d) and a respective one of the plurality of DC terminals (12a, 12b,12c, 12d), each DC circuit interruption device station (18) including a DC circuit interruption device (20) to selectively interrupt current flow in the associated DC power transmission medium (14a, 14b, 14c, 14d), the method comprising the steps of: (i) detecting one or more faults occurring in the plurality of DC power transmission media (14a, 14b, 14c,14d); (ii) after detecting the or each fault, opening all of the DC circuit interruption devices (20) to interrupt current flow in the plurality of DC power transmission media (14a,14b, 14c,14d); (iii) measuring electrical characteristics of each DC power transmission medium (14a, 14b, 14c,14d); (iv) identifying the or each faulty DC power transmission medium (14a, 14b, 14c, 14d), in which the or each fault is located, based on the measured electrical characteristics of the plurality of DC power transmission media (14a, 14b, 14c, 14d); and (v) after identifying the or each faulty DC power transmission medium (14a, 14b, 14c, 14d) in which the or each fault is located, inhibiting closing of the or each DC circuit interruption device (20) that is associated with the or each faulty DC power transmission medium (14a,14b, 14c,14d), in which the or each fault is located, and closing the or each DC circuit interruption device (20) that is associated with the or each non-faulty DC power transmission medium (14a, 14b, 14c, 14d), in which the or each fault is not located.

公开(公告)号：US09608436B2

公开(公告)日：2017-03-28

申请号：US14402648

申请日：2013-05-16

Applicant: ALSTOM Technology Ltd

Inventor： Carl David Barker

IPC: H02H7/22 ,  H02H3/07 ,  H02H7/12 ,  H02H7/26 ,  H02H11/00 ,  H02J3/36 ,  H02M7/483

CPC classification number: H02H7/22 ,  H02H3/07 ,  H02H7/12 ,  H02H7/268 ,  H02H11/00 ,  H02J3/36 ,  H02M2007/4835 ,  Y02E60/60

Abstract: There is a method of fault clearance for a voltage source converter that interconnects a DC network and an AC network. The voltage source converter is connected to the DC network via one or more DC circuit interruption devices. The method comprises the steps of: (a) detecting a fault in the DC network; (b) carrying out a primary protection sequence, wherein the step of carrying out the primary protection sequence involves carrying out a first sub-sequence that includes the steps of: i. opening the or each DC circuit interruption device, ii. setting a DC power order of the voltage source converter to zero, iii. controlling the voltage source converter to exchange re-circuit breaker active power with the AC network.

公开(公告)号：US20150180231A1

公开(公告)日：2015-06-25

申请号：US14404273

申请日：2013-05-31

Applicant: ALSTOM Technology Ltd

Inventor： Robert Whitehouse ,  Carl David Barker

IPC: H02J1/00

CPC classification number: H02J1/00 ,  H02J1/14 ,  H02J3/36 ,  H02J2001/106 ,  Y02E60/60 ,  Y10T307/352

Abstract: A current flow controller (10) comprising: a plurality of terminals (12a, 12b, 14a, 14b) for connection, in use, to a plurality of DC power transmission medium (16,18) such that each DC power transmission medium (16,18) is connected to at least one of the plurality of terminals (12a, 12b, 14a, 14b); and a current flow control unit interconnecting the plurality of terminals (12a, 12b, 14a, 14b), the current flow control unit including a plurality of current flow control sub-units (20, 22, 23) each of which is, in use, connected to a respective DC power transmission medium (16, 18), each current flow control sub-unit (20, 22, 23) including at least one switching element (24, 28), the or each switching element (24, 28) of each current flow control sub-unit (20, 22, 23) being connected to the same energy storage device (26; 56) to selectively provide a voltage source, and a switching control unit (100) to control switching of each switching element (24, 28) of the current flow control unit to selectively inject a voltage drop (V1, V2), in use, into each DC power transmission medium (16,18) so as to simultaneously regulate current flow (I1, I2) in each DC power transmission medium (16, 18) and divert energy from at least one DC power transmission medium (16, 18) into at least one other DC power transmission medium (16, 18) via the current flow control unit.

Abstract translation: 一种电流控制器（10），包括：多个端子（12a，12b，14a，14b），用于在使用中连接到多个DC电力传输介质（16,18），使得每个DC电力传输介质（16 ，18）连接到所述多个端子（12a，12b，14a，14b）中的至少一个端子; 和连接多个端子（12a，12b，14a，14b）的电流控制单元，所述电流控制单元包括在使用中各自的多个电流控制子单元（20,22,23） ，连接到相应的直流电力传输介质（16,18），每个电流控制子单元（20,22,23）包括至少一个开关元件（24,28），所述或每个开关元件（24,28） 每个电流控制子单元（20,22,23）连接到相同的能量存储装置（26; 56）以选择性地提供电压源;以及开关控制单元（100），用于控制每个开关 电流流量控制单元的元件（24,28），用于在每个直流电力传输介质（16,18）中选择性地注入使用中的电压降（V1，V2），以同时调节电流（I1，I2） 在每个DC电力传输介质（16,18）中并且将能量从至少一个DC电力传输介质（16,18）转移到至少一个其它 DC电力传输介质（16,18）。