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公开(公告)号：US20240348047A1
公开(公告)日：2024-10-17
申请号：US18298892
申请日：2023-04-11
CPC分类号： H02J3/0012 , G01R19/2513 , H02J13/00002
摘要： The present application provides a system for malicious control detection in power grids. The system includes at least one node configured to detect power grid parameters for each power phase and generate a signal indicative of time-series sensor measurements for each power phase. A controller in communication with the node may be configured to receive from the at least one node, the respective signals, extract at least one feature from the respective signals, provide the at least one feature as an input to a deep-learning model, receive an output from the deep-learning model indicative of a relationship between the power grid parameters and a node health associated with the at least one node, generate a status tag associated with the at least one node based at least in part on the output, wherein the status tag is normal or malicious, and generate a status signal indicative of the status tag.
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公开(公告)号：US20240319252A1
公开(公告)日：2024-09-26
申请号：US18188219
申请日：2023-03-22
发明人： Hengxu HA , Xiaoming Li
IPC分类号： G01R31/08
CPC分类号： G01R31/088 , G01R31/086
摘要： The present application provides a method for determining a distance to a fault in a power systems network. The method may involve determining, based on a set of measured voltage samples, a set of processed voltage samples; determining, based on a set of measured current samples, a set of processed reactive current samples, a set of processed resistive current samples, a set of processed negative sequence current samples, and a set of processed zero sequence current samples; selecting, based on an indication from a faulty phase indicator, a selected processed voltage sample, a selected processed reactive current sample, a selected processed resistive current sample, and a selected processed negative or zero sequence current sample; determining, based on the selected processed reactive current sample, that no distortion has occurred due to current transformer (CT) saturation; and calculating, based on the determination that no distortion has occurred, the distance to the fault.
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公开(公告)号：US12100960B2
公开(公告)日：2024-09-24
申请号：US17430271
申请日：2020-02-05
CPC分类号： H02J3/36 , H02H1/0015 , H02H7/10 , H02M1/32 , H02M7/003 , H02M7/4835 , H02M7/5387
摘要： An electrical assembly comprises a plurality of modules (36), each module (36) including at least one switching element (38) and at least one energy storage device (40), the or each switching element (38) and the or each energy storage device (40) in each module (36) arranged to be combinable to selectively provide a voltage source, wherein each module (36) includes a respective sensor (46) that is configured to monitor at least one other of the plurality of modules (36), each sensor (46) configured to selectively detect an occurrence of an operational hazard in the or each corresponding monitored module (36).
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公开(公告)号：US20240243582A1
公开(公告)日：2024-07-18
申请号：US18563042
申请日：2022-05-16
摘要： There is provided an assembly for use in electrical power transmission. The assembly includes a building for housing an electrical power transmission component, a charging circuit, a grounding circuit for electrical connection to ground, and at least one transformer located outside the building. The or each transformer including mutually coupled first and second transformer windings, the or each first transformer winding for electrical connection to an AC network, the or each second transformer winding for electrical connection to the electrical power transmission component, the or each transformer further including phase and neutral bushings electrically connected to respective terminals of the corresponding second transformer winding, the or each phase bushing extending into the building for electrical connection to the electrical power transmission component, the charging circuit electrically interconnecting the or each neutral bushing and the grounding circuit.
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5.发明授权公开(公告)号：US12027843B2
公开(公告)日：2024-07-02
申请号：US17475033
申请日：2021-09-14
摘要： Systems, methods, and computer-readable media are disclosed for high-speed falling conductor protection in electric distribution systems. An example method may include calculating, by a processor, at a first time, and for each phase, one or more first impedance values associated with one or more terminals of a transmission line. The example method may also include calculating, by the processor, at a second time, and for each phase, one or more second impedance values associated with the one or more terminals. The example method may also include determining, by the processor, that a rate of change of an impedance of the one or more terminals is greater than a threshold rate of change. The example method may also include determining, by the processor and based on the determination that the rate of change of the one or more terminals is greater than the threshold rate of change, that the transmission line has broken. The example method may also include sending, by the processor and based on the determination that the transmission line has broken, a signal to de-energize the transmission line before a broken conductor reaches a ground surface.
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公开(公告)号：US11894771B2
公开(公告)日：2024-02-06
申请号：US17431414
申请日：2020-01-28
CPC分类号： H02M3/158 , H02M1/0058 , H02M1/0077 , H02M1/32 , H02M3/07
摘要： There is provided a current control circuit (20) for connection between a first electrical network (42) and a converter, the current control circuit (20) comprising:
first and second input terminals (24,26) for connection to the first electrical network (42);
first and second output terminals (28,30) for respective connection to converter terminals (46,48) of the converter;
first and second switching limbs, the first switching limb interconnecting the first input and output terminals (24,28), the second switching limb interconnecting the second input and output terminals (26,30), each switching limb including a respective switching element (32,34,36,38);
a director limb (76) extending between the first and second output terminals (28,30), the director limb (76) including at least one current director element (84) and at least one first resistive element (86), the director limb (76) including an intermediate terminal (82);
a second resistive element (88), a first end of the second resistive element (88) operably connected to the intermediate terminal (82), a second end of the second resistive element (88) operably connectable to ground; and
a controller (96) programmed to selectively control switching of each switching element (32,34,36,38) so as to, in use, regulate a flow of current from the first electrical network (42) to the converter.-
公开(公告)号：US11871166B2
公开(公告)日：2024-01-09
申请号：US16327532
申请日：2017-08-08
CPC分类号： H04Q9/00 , G08C25/00 , G08C2200/00 , H04Q2209/84
摘要： There is provided a sensor system for use in a high voltage direct current network. The sensor system comprises a plurality of sensor devices, each sensor device configured to obtain a respective sensor measurement, wherein the plurality of sensor devices are configured to generate a serial data unit for transmission to a recipient system, the serial data unit configured to include the plurality of sensor measurements (S1, S2, Sn), the serial data unit further configured to include a plurality of validity indicators (FCS1, FCS2, FCSn), each validity indicator (FCS1, FCS2, FCSn) configured to provide an individual validity status of a respective one of the plurality of sensor measurements (S1, S2, Sn).
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公开(公告)号：US20230344364A1
公开(公告)日：2023-10-26
申请号：US17998793
申请日：2021-05-28
发明人： Pablo BRIFF , Andrzej ADAMCZYK , Sameer SINGHAL
CPC分类号： H02M7/4835 , H02M1/0025 , H02M1/0012
摘要： A voltage source converter includes first and second DC terminals which have at least one converter limb extending therebetween. Each limb portion includes a chain-link converter that extends between an associated AC terminal and a corresponding one of the first or the second DC terminal. Each chain-link converter also includes a chain-link converter controller which is programmed to control a series of connected chain-link modules. The voltage source converter additionally includes a voltage source converter controller which is arranged in operative communication with each chain-link converter controller to coordinate operation of the chain-link converters. Each chain-link converter controller is further programmed to reconstruct from a received modulation index demand the chain-link converter voltage reference, which the chain-link converter it is controlling is required to produce, by multiplying the received modulation index demand by a total voltage sum established at a first time instant.
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公开(公告)号：US20230344257A1
公开(公告)日：2023-10-26
申请号：US18295742
申请日：2023-04-04
发明人： Colin DAVIDSON
IPC分类号： H02M3/00 , H02J7/00 , H01M50/383
CPC分类号： H02J7/007 , H01M50/383 , H02J7/0013 , H02M3/003
摘要： A DC energy storage system may include first and second DC terminals for connection to a DC link, a DC energy storage converter including a number of modules connected in series between the first and second DC terminals, each module including at least one switching element and at least one battery, the or each switching element and the or each battery in each module being combinable to selectively provide a voltage source, and at least one fire-resistant protective barrier arranged to separate the modules into converter sections, each converter section including at least one module of the number of modules.
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公开(公告)号：US20230344236A1
公开(公告)日：2023-10-26
申请号：US18295786
申请日：2023-04-04
发明人： Colin DAVIDSON , Andrzej ADAMCZYK
CPC分类号： H02J3/36 , H02H3/087 , H02J7/0016 , H02J7/0024 , H02M1/32 , H02M3/158
摘要： A DC energy storage system may include first and second DC terminals for connection to a DC link, a DC energy storage converter including a number of modules connected in series between the first and second DC terminals, each module including at least one switching element and at least one energy storage device, the or each switching element and the or each energy storage device in each module being combinable to selectively provide a voltage source, and at least one circuit interruption device connected in series with the DC energy storage converter between the first and second DC terminals, the or each circuit interruption device operable to electrically separate the DC energy storage converter from the DC link.
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