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公开(公告)号：US10310003B2
公开(公告)日：2019-06-04
申请号：US15120109
申请日：2015-02-18
Applicant: General Electric technology GmbH
Inventor： Colin Davidson , David Reginald Trainer , Carl Barker , Oleg Bagleybter
Abstract: This application relates to methods and apparatus for fault protection in a DC power transmission network or grid that aid in determining the location of a fault in the network. The method involves, in the event of a fault, controlling at least one current limiting element of the network so as to limit a fault current flowing to below a first current level which is within the expected current operating range of the network in normal operation, i.e. a safe level. The fault current is then controlled to maintain a non-zero level of fault current flow and the characteristics of the fault current flow at different parts of the network are determined by fault current detection modules. The location of the fault is then determined based on the determined characteristics.
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公开(公告)号：US12143029B2
公开(公告)日：2024-11-12
申请号：US17801878
申请日：2021-03-02
Applicant: General Electric Technology GmbH
Inventor： Javier Chivite-Zabalza , John Outram , Colin Davidson
Abstract: An electrical assembly includes a number of modules, each module including at least one module switching element and at least one energy storage device, each module switching element and each energy storage device in each module arranged to be combinable to provide a voltage source, each module including a discharge circuit with a discharge switching element and a discharge resistor, each discharge switching element switchable to switch the corresponding discharge resistor into and out of the corresponding module, wherein the electrical assembly includes a controller configured to control the discharge switching elements to modulate the switching of each discharge resistor into and out of the corresponding module in a voltage balancing mode when the modules are in a blocked state so that each module emulates a resistive load profile to balance a distribution of voltages between the modules, wherein the resistive load profile includes at least one positive resistive slope.
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公开(公告)号：US12027993B2
公开(公告)日：2024-07-02
申请号：US17795683
申请日：2021-01-25
Applicant: General Electric Technology GmbH
Inventor： Colin Davidson
CPC classification number: H02M7/4835 , H02M1/322
Abstract: In the field of chain-link modules for voltage source converters, there is a need for an improved chain-link module.
Embodiments of the disclosure include a chain-link module, for connection in series with other chain-link modules to form a chain-link converter selectively operable to provide a stepped variable voltage source within a voltage source converter. The module can include a first pair of series-connected switching elements which are separated by a first connection terminal and are connected in parallel with first and second series-connected energy storage devices. The chain-link module can also include a second pair of series-connected switching elements that are separated by a second connection terminal, and which are connected in parallel with one or other of the first and second energy storage devices.-
公开(公告)号：US20170074919A1
公开(公告)日：2017-03-16
申请号：US15120109
申请日：2015-02-18
Applicant: General Electric Technology GmbH
Inventor： Colin Davidson , David Reginald Trainer , Carl Barker , Oleg Bagleybter
CPC classification number: G01R31/086 , H02H7/268 , H02H9/02 , Y04S10/522
Abstract: This application relates to methods and apparatus for fault protection in a DC power transmission network or grid that aid in determining the location of a fault in the network. The method involves, in the event of a fault, controlling at least one current limiting element of the network so as to limit a fault current flowing to below a first current level which is within the expected current operating range of the network in normal operation, i.e. a safe level. The fault current is then controlled to maintain a non-zero level of fault current flow and the characteristics of the fault current flow at different parts of the network are determined by fault current detection modules. The location of the fault is then determined based on the determined characteristics.
Abstract translation: 本申请涉及用于确定网络中的故障位置的直流输电网络或电网中的故障保护的方法和装置。 该方法涉及在发生故障的情况下控制网络的至少一个限流元件，以便限制在正常操作中流动到低于网络的预期当前工作范围内的第一电流电平的故障电流， 即一个安全的水平。 然后控制故障电流以保持非零电平的故障电流，并且故障电流流量在网络的不同部分的特性由故障电流检测模块确定。 然后基于确定的特性确定故障的位置。
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