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1.发明公开公开(公告)号：US20240361374A1
公开(公告)日：2024-10-31
申请号：US18308109
申请日：2023-04-27
发明人： JINLIANG HE , JUN HU , YONG OUYANG , YI LIU , SHANXIANG WANG , RONG ZENG , ZHANQING YU
CPC分类号： G01R31/085 , H04B3/54
摘要： Disclosed are a power transmission line monitoring system and a power transmission line monitoring method. The monitoring method comprises: acquiring, by means of a functional node, monitoring data related to a power transmission line, and transmitting the monitoring data to an edge node; and receiving the monitoring data by means of the edge node, transmitting the monitoring data to a collection node by means of an edge node chain type communication network, and sending, by the collection node, the data to a master station server. In the application, a self-organized edge node chain type network is formed by means of edge nodes, and data transmission is performed by means of the edge node chain type network, so that problem of poor data transmission caused by impossible coverage of a cellular network can be solved.
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公开(公告)号：US12130322B2
公开(公告)日：2024-10-29
申请号：US18061118
申请日：2022-12-02
IPC分类号： G01R31/08
CPC分类号： G01R31/088 , G01R31/085 , G01R31/086
摘要： Systems may include a first data acquisition subsystem, a second data acquisition subsystem, and a traveling wave analysis subsystem. The traveling wave analysis subsystem may be configured to analyze measured traveling wave data from the first data acquisition subsystem and the second data acquisition subsystem. Additionally, methods of analyzing traveling wave data resulting from a fault on an electric power delivery system may involve analyzing measured electrical properties of at least one traveling wave.
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公开(公告)号：US12123907B2
公开(公告)日：2024-10-22
申请号：US17729886
申请日：2022-04-26
申请人： Dell Products L.P.
发明人： Ching-Huei Chen , Bhyrav Mutnury , Chun-Lin Liao , Chi-Hsiang Hung , Pei-Ju Lin
CPC分类号： G01R31/2812 , G01R1/07
摘要： A flying probe includes a test module and a processor. The test module measures a plurality of delta capacitances associated with a plurality of vias in a printed circuit board. The plurality of vias include first, second, third and fourth vias. Each different delta capacitance is measured between a different pair of the vias. The processor compares all the delta capacitances to a threshold value. In response to multiple delta capacitances associated with the first via being greater than or equal to the threshold value, the processor detects a possible via stripping issue for the first via.
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公开(公告)号：US20240348088A1
公开(公告)日：2024-10-17
申请号：US18611466
申请日：2024-03-20
CPC分类号： H02J13/00034 , G01R31/088 , G01R31/2836 , H02H3/042 , H02J13/00002
摘要： A system for estimating faulted area in an electric distribution system. The system includes a database storing input data, a fault detection module to estimate, based on the input data, if a new faulted area estimation process is required, a condition estimation module to estimate condition of metered protective devices, un-metered protective devices, and metered devices (PMDs), an upstream to downstream module to assess condition of each metered protective device, un-metered protective device, and metered device (PMD), starting from a feeder circuit breaker towards feeder downstream, to estimate a tripped protective device and a last metered device upstream of a fault, and a downstream to upstream module configured to assess outaged electric loads or elements towards network upstream to find the common interrupting protective device.
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公开(公告)号：US20240345178A1
公开(公告)日：2024-10-17
申请号：US18299655
申请日：2023-04-12
发明人： John Zhuo Liu , Jasper Hao Yang , Julie Haihui Lu , Yujia Cui , Kadir Liano , Tim Liu , George Cheng , Navid Zargari , Bijan SayyarRodsari , Jiangang Hu
CPC分类号： G01R31/52 , G01R31/088
摘要： For transformer fault detection, a method generates a transition region that separates a health region and a fault region in a two-dimensional feature space of two feature indicators for a plurality of operation conditions using a fault detection model for a power transformer type. The method determines the feature indicators of a given power transformer of the power transformer type. The method determines whether the feature indicators in the transition region satisfy a fault condition. The method predicts an inter-turn short fault for the given power transformer in response to satisfying the fault condition or the feature indicators being in the fault region.
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公开(公告)号：US12117479B2
公开(公告)日：2024-10-15
申请号：US17604823
申请日：2020-04-16
CPC分类号： G01R31/086 , G01R31/083 , G01R31/085 , H02H7/268 , H02J13/00002 , H02J3/36 , Y02E60/60 , Y04S10/20 , Y04S10/30
摘要： The invention relates to a transient based method for identifying faults in an electric power transmission and/or distribution system (100) having at least one current transmission line (L12, L13, L23) comprising the following steps: —generation of a physical model of the at least one current transmission line (L12, L13, L23), the physical model depending on the fault parameters and describing the behavior of voltage and/or current transients due to the fault in the at least one current transmission line, fault parameters comprising a fault location parameter on said current transmission line (L12, L13, L23) and a fault impedance parameter, —measurement of voltage and/or currents evolution at least at one specific location in the said power system (100), —iterative simulation of the voltage and/or current evolution by the physical model at the measurement point with a set of fault parameters where at each step of iteration, simulated and measured voltage and/or current evolutions are compared and the set of fault parameters is adapted according to a convergence criterion, —identification of a fault with its fault parameters when convergence of the measured voltage and/or current evolutions and simulated voltage and/or current evolutions is reached in a limited number of iterations.
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公开(公告)号：US12111344B2
公开(公告)日：2024-10-08
申请号：US18419589
申请日：2024-01-23
发明人： Yaakov Yahav , Nimrod Sandlerman
CPC分类号： G01R31/086 , G01R31/52
摘要： A method, and a system and/or computer program implementing the method, for predicting short circuit events in an electric grid, the method including: distributing a plurality of cable mounted sensors on each phase carrying cable of the electric grid, measuring one or more instantaneous voltage and instantaneous current by each of the plurality of cable mounted sensors, determining electricity generation sources feeding the electric grid, determining voltage output for each electricity generation source feeding the electric grid, and determining cable length from each electricity generation source where short-circuit current may be higher than permitted short circuit current.
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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：US12092680B2
公开(公告)日：2024-09-17
申请号：US18431193
申请日：2024-02-02
发明人： Josy Cohen , Louise Revault
CPC分类号： G01R31/11 , G01R31/083
摘要： A method for detecting a random transition in a conducting line, includes the steps of: making a first reference reflectometry measurement on the conducting line in order to deduce a reference time-domain reflectogram therefrom, identifying at least one characteristic of the reference time-domain reflectogram, making a second reflectometry measurement on the conducting line to obtain a second time-domain reflectogram, identifying the same at least one characteristic in the second time-domain reflectogram, and for each amplitude peak identified, determining a difference between the at least one characteristic measured on the reference time-domain reflectogram and the same characteristic measured on the second time-domain reflectogram, evaluating, from a plurality of successive measurements, whether the difference increases in absolute value, and, if this is the case, triggering a warning corresponding to the appearance of a random transition.
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公开(公告)号：US20240302421A1
公开(公告)日：2024-09-12
申请号：US18667389
申请日：2024-05-17
发明人： PETER VERNICKEL , OLIVER LIPS
CPC分类号： G01R31/083 , G01R33/36
摘要： The invention relates to the field of magnetic resonance, and in particular to determining a location of an error in a supply or signal line. Due to the rugged environment for MR systems in hospitals supply or signal lines of MR systems are error prone. For serviceability and part replacement it is important to locate the error in the supply or signal line or to identify the subunit of the supply or signal line in which the error occurred. The basic idea of the invention is to use an additional impedance, that is coupled to the supply or signal line of the MR system in the region of interconnection for locating the error in the supply or signal line. The additional impedance provides a reference impedance value. By measuring the impedance and comparing the measured impedance to the reference impedance value, the error in the supply or signal line can be located. In one embodiment the additional impedance is realized as additional capacitance and provided as a capacitor.
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