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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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2.发明公开公开(公告)号：US20240345142A1
公开(公告)日：2024-10-17
申请号：US18638531
申请日：2024-04-17
发明人： Anamitra Pal , Behrouz Azimian , Lang Tong
IPC分类号： G01R19/25
CPC分类号： G01R19/2513
摘要： Time-synchronized state estimation for reconfigurable distribution systems is challenging because of limited real-time observability. A system addresses this challenge by formulating a deep learning (DL)-based approach for topology identification (TI) and unbalanced three-phase distribution system state estimation (DSSE). Two deep neural networks (DNNs) are trained for time-synchronized DNN-based TI and DSSE, respectively, for systems that are incompletely observed by synchrophasor measurement devices (SMDs) in real-time. A data-driven approach for judicious SMD placement to facilitate reliable TI and DSSE is also developed.
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公开(公告)号：US20240322572A1
公开(公告)日：2024-09-26
申请号：US18735348
申请日：2024-06-06
发明人： Björn Oliver Winter
CPC分类号： H02J3/388 , G01R19/2513 , H02J3/001
摘要： The disclosure is directed to an island network detection method using a voltage-impressing converter, and includes determining the frequency and phase of a voltage curve of a sub-network connected to a network connection point of the converter, and generating a voltage curve using a bridge circuit of the converter with the determined frequency. The method also includes determining a correlation between a first temporal variation and a second temporal variation of an output exchanged by the converter with the sub-network, and detecting an island network if the determined correlation undershoots a specified correlation measurement.
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4.发明授权公开(公告)号：US12051964B2
公开(公告)日：2024-07-30
申请号：US17482683
申请日：2021-09-23
发明人： Ryuunosuke Araumi , Ryuji Yamada
CPC分类号： H02M1/0009 , G01R15/16 , G01R19/10 , G01R19/14 , G01R19/2513 , H02M3/33571
摘要： A current detection circuit configured to detect a resonant current of a power supply circuit. The power supply circuit includes a resonant circuit that has an inductor and a first capacitor having a first end and a second end. The current detection circuit includes a second capacitor having a first end and a second end, and a non-linear circuit provided between the second end of the second capacitor and the second end of the first capacitor. The first end of the second capacitor is coupled to the first end of the first capacitor.
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公开(公告)号：US20240230729A1
公开(公告)日：2024-07-11
申请号：US18526193
申请日：2023-12-01
发明人： Farid Katiraei , Aghil Davari , Shadi Chuangpishit , Amin Zamani
CPC分类号： G01R19/2513 , H02J3/381 , H02J13/00002 , H02J13/00034
摘要： A local electric power system (EPS) field tester is provided for field testing of a local EPS. The local EPS has distributed energy resources (DERs) and is capable of operating in conjunction with, or independently from, an external power system while supplying load(s). The local EPS field tester comprises local EPS testing equipment deployed in and/or on mobile deployment equipment. The local EPS testing equipment includes a gateway (for relaying signaling between the local EPS field tester and a local EPS controller of the local EPS), a power distribution busbar, and various switchgear including local EPS connection switchgear, DER connection switchgear, and load connection switchgear. The local EPS testing equipment further includes load controller equipment configured to emulate or simulate a load controller of the local EPS, according to signaling from the local EPS controller or an emulated or simulated SCADA/DMS system as relayed by the gateway.
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公开(公告)号：US12007419B2
公开(公告)日：2024-06-11
申请号：US17235377
申请日：2021-04-20
CPC分类号： G01R19/2513 , H03K17/18
摘要： A power quality monitor (PQM) module includes a solid-state semi-conductor switch having a voltage input, two signal inputs and two voltage outputs. A voltage input line is electrically connected to the voltage input. A PQM signal input line is operatively connected to at least one of the two signal inputs. A voltage output line is electrically connected to one of the two voltage outputs to provide power to a load. A method of controlling a GCB includes opening a solid-state semi-conductor switch when a PQM signal is powered at a first logic voltage. The method includes closing the solid-state semi-conductor switch when a PQM signal is powered at a second logic voltage lower than the first logic voltage to allow a voltage from a GCU to go to the GCB.
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公开(公告)号：US11946982B2
公开(公告)日：2024-04-02
申请号：US17090559
申请日：2020-11-05
申请人： GRID20/20, Inc.
IPC分类号： G01R31/62 , G01R19/165 , G01R19/25 , G01R22/06 , G01R31/00 , G01R31/40 , G01R31/42 , H02S50/00 , H04Q9/00 , H04Q9/02 , G01K13/00 , H02S50/10 , H04L67/12
CPC分类号： G01R31/62 , G01R19/16538 , G01R19/25 , G01R19/2513 , G01R22/063 , G01R31/002 , G01R31/40 , G01R31/42 , H04Q9/00 , H04Q9/02 , G01K13/00 , H02S50/00 , H02S50/10 , H04L67/12 , H04Q2209/40 , H04Q2209/60 , Y04S40/18
摘要： A transformer monitoring device has one or more voltage sensors and/or one or more current sensors integral with a housing for detecting a voltage of a power cable of a transformer. The transformer monitoring device can be configured to monitor voltage levels, and cause alerts to be issued if voltage levels drop and/or spike beyond operator-established tolerance(s). The transformer monitoring device further has one or more environmental sensors including a smoke sensor, ambient temperature sensor, external transformer temperature sensor, a fire/wildfire sensor, a humidity sensor, a noxious gases sensor, a seismic or vibration sensor, and/or a surface and/or ground temperature sensor configured to detect smoke, and/or temperature change indicators, and/or other environmental changes in an area surrounding the transformer, and a processor configured to monitor the smoke sensor, temperature sensors, and/or other environmental change sensors, the processor configured to transmit an alert if smoke, temperature and/or other environmental conditions are detected surrounding the transformer.
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公开(公告)号：US20240094268A1
公开(公告)日：2024-03-21
申请号：US17948436
申请日：2022-09-20
发明人： Brandon King , Pavan Honnegowda , Sunghoon Kim , Philipp Kratzsch
CPC分类号： G01R19/2513 , D06F34/10 , D06F34/14 , D06F58/26 , D06F58/38 , D06F2103/44
摘要： A laundry machine comprising: a drum; a motor to rotate the drum; electric heating element(s) configured to produce heat; an airflow path from the heating element(s) to the drum; an analog to digital converter (ADC) configured to sample an AC voltage from a first power line of a group of power lines connected to the machine; and a controller configured to: (a) trigger the ADC to sample an AC voltage from the first power line, (b) determine a timing of occurrence of a peak value of the sampled AC voltage from the first power line, (c) compare the timing of occurrence of the peak value to predetermined timing signatures, (d) choose one of the timing signatures based on the comparison, and (e) control power to the electric heating element based on the chosen timing signature. Methods of operating a laundry washing machine are also provided.
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公开(公告)号：US11916380B2
公开(公告)日：2024-02-27
申请号：US17502390
申请日：2021-10-15
发明人： Soorya Kuloor , Chethana Kuloor , Umang Deora , Anthony DeRubeis
CPC分类号： H02J13/00034 , G01R31/50 , H02J13/00006 , H02J13/00007 , G01R19/2513
摘要： Methods for verifying and updating connectivity information in a geographic information system may consider location information for meters and transformers and voltage data obtained by the meters. Meters that are incorrectly associated with a transformer may be flagged and candidate transformers may be evaluated to identify a correct association. The analysis may consider voltage data from multiple meters to determine correlation values. Correlation values or confidence factors may be used to identify a transformer for the correct association.
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公开(公告)号：US20240022483A1
公开(公告)日：2024-01-18
申请号：US18473181
申请日：2023-09-22
申请人： C3.ai, Inc.
发明人： Jeremy Kolter , Giuseppe Barbaro` , Mehdi Maasoumy Haghighi , Henrik Ohlsson , Umashankar Sandilya
CPC分类号： H04L41/16 , H04L67/12 , G06N20/00 , G01R19/2513 , G06N7/01
摘要： The present disclosure provides systems and methods that may advantageously apply machine learning to detect and ascribe network interruptions to specific components or nodes within the network. In an aspect, the present disclosure provides a computer-implemented method comprising: mapping a network comprising a plurality of islands that are capable of dynamically changing by splitting and/or merging of one or more islands, wherein the plurality of islands comprises a plurality of individual components; and detecting and localizing one or more local events at an individual component level as well as at an island level using a disaggregation model.
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