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公开(公告)号：US12113358B2
公开(公告)日：2024-10-08
申请号：US18538514
申请日：2023-12-13
CPC分类号： H02J3/00 , H02J3/001 , H02J3/241 , H02J3/32 , H02J3/38 , H02J3/381 , H02J2203/10 , H02J2300/28
摘要： According to an aspect of the invention there is provided a method of controlling an energy storage system to provide a frequency regulation service for a power network, to which the energy storage system is connected. The energy storage system is controlled according to one or more regulations of the power network to counteract frequency deviations within a frequency contingency deadband of the power network to provide the frequency regulation service for a service period. The energy storage system is one of a plurality of energy storage systems connected to the power network, each energy storage system being operated to counteract the frequency deviations according to the one or more regulations of the power network.
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公开(公告)号：US12110866B2
公开(公告)日：2024-10-08
申请号：US17521553
申请日：2021-11-08
发明人： Christian Wessels , Nils Hoffmann
CPC分类号： F03D7/0284 , F03D15/00 , H02J3/001 , H02J3/381 , H02P9/007 , F05B2220/706 , F05B2270/337 , H02J2300/28
摘要： This disclosure is directed to a method for operating a wind turbine which includes a speed-variable drive system. The system includes an electrical machine and a pulsewidth modulation-controlled converter. The speed-variable drive system is connected to an electrical grid. In the event of a transient grid fault, a frequency of the pulsewidth modulation is determined in response to a current in an electrical circuit connected to the converter.
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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.发明公开公开(公告)号：US20240291274A1
公开(公告)日：2024-08-29
申请号：US18432332
申请日：2024-02-05
申请人： Mojdeh Hedman , Zahra Soltani
发明人： Mojdeh Hedman , Zahra Soltani
CPC分类号： H02J3/16 , H02J3/001 , H02J3/38 , H02J2203/20 , H02J2300/24
摘要： A system and associated method models behavior of an unbalanced distribution system using a current-voltage (IVACOPF) formulation. Untransposed distribution lines, shunt elements of distribution lines, and detailed representation of distribution transformers and DERs are modeled. The system provides detailed modeling of distribution system including mutual impedances, shunt elements, 3-phase to 1-phase lines. The model has multiple applications for distribution system management, planning, and operation.
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公开(公告)号：US20240281666A1
公开(公告)日：2024-08-22
申请号：US18570086
申请日：2022-06-10
发明人： Mathias Duckheim , Michael Metzger
摘要： Various embodiments of the teachings herein include a method for the reinforced learning of an artificial neural network. The neural network uses measured values associated with a supply network to determine a plurality of control values for controlling the supply network. The method may include: determining a control value so at least one limit value of a measurement variable of the supply network is violated in a time range, wherein the time range is determined in such a way that protective devices of the supply network do not trip; acquiring at least one measured value associated with the control value; and training the neural network using the calculated control value and the acquired associated measured value.
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6.发明公开公开(公告)号：US20240275166A1
公开(公告)日：2024-08-15
申请号：US18439218
申请日：2024-02-12
摘要： A computer-implemented method for a network analysis of an electrical energy network having at least one energy transmission network and at least one energy distribution network. The at least one energy transmission network has a higher rated voltage than the at least one energy distribution network. The method includes: determining a network state by use of a network analysis arrangement, taking into account a network partition data set, wherein the network partition data set provides an assignment of lines and/or equipment to the at least one energy transmission network and the at least one energy distribution network. Before a determination of the network state, by use of a network partitioning device based on a topology data set of the electric energy network, the electrical energy network is partitioned into the at least one energy transmission network and the at least one energy distribution network in the network partition data set.
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公开(公告)号：US12019436B2
公开(公告)日：2024-06-25
申请号：US18052887
申请日：2022-11-04
CPC分类号： G05B23/0283 , G05B13/02 , G05B23/0229 , G05B23/0272 , H02J3/00 , H02J3/001 , H02J3/381 , H02J2203/20 , H02J2300/20
摘要： An example method comprises receiving historical sensor data of a renewable energy asset for a first time period, identifying historical log data in one or more log sources, retrieving dates of the identified historical log data, retrieving sequences of historical sensor data using the dates, training hidden Markov models using the sequences of historical sensor data to identify probability of shifting states of one or more components of the renewable energy asset, receiving current sensor data of a second time period, identifying current log data in the one or more log sources, retrieving dates of the identified current log data, retrieving sequences of current sensor data using the dates, applying the hidden Markov models to the sequences of the current sensor data to assess likelihood of the one or more faults, creating a prediction of a future fault, and generating a report including the prediction of the future fault.
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公开(公告)号：US12003213B2
公开(公告)日：2024-06-04
申请号：US18148132
申请日：2022-12-29
申请人： SUNPOWER CORPORATION
发明人： Sandeep Narla , Brian Risi , Andrew Lutkus
摘要： The present disclosure provides systems and methods for integrating an energy control system with an electrical system having a utility meter connected to a utility grid, a photovoltaic (PV) system, an energy storage system, and a plurality of electrical loads. The systems and methods include determining a site condition of the electrical system, determining a type of backup configuration for the electrical system based on the determined site condition, and determining a location of at least one of a main circuit breaker, the PV system, a subpanel, and a site current transformer with respect to the energy control system based on the determined site condition and the determined type of backup configuration.
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9.发明授权公开(公告)号：US11977375B2
公开(公告)日：2024-05-07
申请号：US18056228
申请日：2022-11-16
发明人： Chandramouli Visweswariah , Lars Toghill , Joel Igba , Neil Desai , Younghun Kim , Yajuan Wang
IPC分类号： G05B23/02 , G06F18/214 , G06N20/00 , H02J3/00
CPC分类号： G05B23/0283 , G05B23/0227 , G06F18/214 , G06N20/00 , H02J3/001 , H02J2300/28
摘要： An example method comprises receiving historical wind turbine failure data and asset data from SCADA systems, receiving first historical sensor data, determining healthy assets of the renewable energy assets by comparing signals to known healthy operating signals, training at least one machine learning model to indicate assets that may potentially fail and to a second set of assets that are operating within a healthy threshold, receiving first current sensor data of a second time period, applying a machine learning model to the current sensor data to generate a first failure prediction a failure and generate a list of assets that are operating within a healthy threshold, comparing the first failure prediction to a trigger criteria, generating and transmitting a first alert if comparing the first failure prediction to the trigger criteria indicates a failure prediction, and updating a list of assets to perform surveillance if within a healthy threshold.
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10.发明公开公开(公告)号：US20240146053A1
公开(公告)日：2024-05-02
申请号：US17976523
申请日：2022-10-28
申请人： NXP USA, INC.
摘要： A resonance avoidance system including a resonance avoidance controller configured to insert a delay between sequential transactions on a communication interface separated by an inactive period to avoid stimulating a power distribution network resonance. The resonance avoidance controller may be configured to insert the delay by delaying a second transaction from being driven onto the communication interface after a first transaction in which the delay is sufficient to avoid stimulating the power distribution network resonance. The delay may be inserted by delaying a driver from driving the second transaction by the sufficient delay. The conflict may be detected between first and second commands in a command queue, in which the delay may be inserted by inserting no operation commands between the commands in the command queue. Operational timing values may be stored that are used to detect resonant frequency conflicts.
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