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11. 发明申请

US20220381850A1 EARTH FAULT DETECTION APPARATUS 有权
公开(公告)号：US20220381850A1
公开(公告)日：2022-12-01
申请号：US17752178
申请日：2022-05-24
申请人： Yazaki Corporation
发明人： Yasuyuki MOCHIZUKI , Norio SUDO , Ryosuke ARIGAYA
IPC分类号： G01R31/52 , G01R27/26 , G01R31/12
摘要： An earth fault detection apparatus includes a switch group configured to switch between a first measurement path including a battery and a capacitor, a second measurement path including the battery, a negative-side insulation resistance, and the capacitor, a third measurement path including the battery, a positive-side insulation resistance, and the capacitor; and a control unit configured to calculate a reference value, based on each charging voltage of the capacitor in each measurement path, and configured to calculate an insulation resistance with reference to a predetermined conversion map, in which the conversion map includes a conversion map corresponding to a capacitance of the capacitor, and the control unit estimates the capacitance of the capacitor, and refers to the conversion map corresponding to the capacitance of the capacitor that has been estimated.

12. 发明授权

US11506546B2 Systems and methods for measuring internal transformer temperatures 有权
公开(公告)号：US11506546B2
公开(公告)日：2022-11-22
申请号：US16736349
申请日：2020-01-07
申请人： Schweitzer Engineering Laboratories, Inc.
发明人： Jeremy William Blair
IPC分类号： G01K13/00 , G01R31/12 , G01R15/18 , H02J13/00 , H02J50/00 , G01K1/02
摘要： A system may include a transformer that may convert a first voltage to a second voltage, such that the second voltage is output via a conductor. The system may also include a wireless current sensor that may detect current data associated with current conducting via the conductor and a processor. The processor may receive the current data, determine one or more temperature measurements associated with the transformer based on the current data, and send a signal to a component in response to the one or more temperature measurements exceeding one or more respective threshold values.

13. 发明申请

US20220365122A1 INSULATION RESISTANCE INSPECTION SYSTEM FOR BATTERY MODULE CELL POUCH 有权
公开(公告)号：US20220365122A1
公开(公告)日：2022-11-17
申请号：US17544907
申请日：2021-12-07
申请人： HYUNDAI MOTOR COMPANY , KIA CORPORATION
发明人： Kyungmo Kim , Hyunjun Yoon
IPC分类号： G01R27/02 , G01R31/385 , G01R31/12 , H01M50/105 , H01M50/569
摘要： An insulation resistance inspection system for a battery module cell pouch for inspecting an insulation resistance state of a cell pouch in the battery module configured by assembling a plurality of battery cells includes: an inspection unit bringing each of a plurality of probe modules into contact with an end surface of the cell pouch to measure an insulation resistance of the cell pouch; an interface unit connected to the inspection unit to receive a signal for the measured insulation resistance of the cell pouch; and a control unit receiving the signal for the insulation resistance of the cell pouch through the interface unit to determine whether the cell pouch is in good condition or in poor condition depending on whether the signal for the insulation resistance of the cell pouch is within a normal range that is a reference of good quality.

14. 发明申请

US20220341983A1 DC ELECTRICAL NETWORK 有权
公开(公告)号：US20220341983A1
公开(公告)日：2022-10-27
申请号：US17725647
申请日：2022-04-21
申请人： Airbus Operations SAS
发明人： Etienne FOCH
IPC分类号： G01R31/00 , G01R31/52 , G01R31/12
摘要： A DC electrical network intended to supply electricity to an electrical load via an electric power source. A first pole of the electric power source is linked to first ends of two first electrical lines, second ends of which are linked to one another, and also to a first pole of the electrical load via two stages of a contactor. A second pole of the electric power source is linked to first ends of two second electrical lines, second ends of which are linked to one another, and also to a second pole of the electrical load via two other stages of the contactor. The electrical network further comprises a processing unit configured to control the contactor to open if current measurements correspond to currents flowing in opposite directions through the two first electrical lines or through the two second electrical lines.

15. 发明申请

US20220334187A1 PHOTODETECTION SENSOR FOR MONITORING AND FAULT DETECTION 有权
公开(公告)号：US20220334187A1
公开(公告)日：2022-10-20
申请号：US17859507
申请日：2022-07-07
申请人： Rivian IP Holdings, LLC
发明人： Emil Yu-ming Chao , Charles Ed Chang
IPC分类号： G01R31/36 , G01N21/64 , H01M10/48 , H01M10/42 , G01R31/12
摘要： A battery monitoring module may be arranged in such a way as to receive a sensor signal from a light sensor configured to detect light within a battery module. The battery monitoring module may determine, using processing circuitry, a light characteristic within the battery module based on the sensor signal. The battery monitoring module may determine, using processing circuitry, a battery condition of the battery module based on the light characteristic.

16. 发明申请

US20220326293A1 DETECTION OF A PARTIAL DISCHARGE 有权
公开(公告)号：US20220326293A1
公开(公告)日：2022-10-13
申请号：US17761837
申请日：2020-08-17
申请人： SIEMENS AKTIENGESELLSCHAFT
发明人： Ulf Bormann , Martin Meyer , Dirk Scheibner , Jürgen Schimmer , Hermann-Josef Wiegand
IPC分类号： G01R31/12
摘要： With a method and a device for detecting a partial discharge at a winding of an electrical machine, electromagnetic first measuring signals are detected in a partial discharge frequency range and electromagnetic second measuring signals are detected in an interference frequency range. A time window around a first measuring signal is predefined, and an identification criterion is defined for a partial discharge signal and an interference signal criterion is defined for a second measuring signal. A determination is made as to a partial discharge when a first measuring signal is detected that meets the identification criterion and when, in the time window around the first measuring signal, no second measuring signal that meets the interference signal criterion is detected. A quality of the detected partial discharge is assessed based on a characteristic value of the second measuring signal.

17. 发明授权

US11467204B2 Testing an integrated capacitor 有权
公开(公告)号：US11467204B2
公开(公告)日：2022-10-11
申请号：US16949069
申请日：2020-10-13
申请人： SEMTECH CORPORATION
发明人： Jonah Edward Nuttgens
IPC分类号： G01R31/12 , G01R31/27 , G01R31/64 , G01R31/26 , H01L49/02
摘要： Circuitry for testing an integrated capacitor that includes a first capacitor, a supply node for connecting to a voltage supply, a test node for connecting to the integrated capacitor, and a charge monitoring circuit. The circuitry is operable in a sequence of states including a first state in which the first capacitor is connected to the supply node and is disconnected from the test node so as to charge the first capacitor to a test voltage and a second state in which the first capacitor is disconnected from the supply node and is connected to the test node to apply the test voltage to the integrated capacitor. The charge monitoring circuit is configured to monitor a charge transfer from the first capacitor to the integrated capacitor in said second state and to generate a measurement value based on an amount of the charge transfer.

18. 发明申请

US20220308105A1 PARTIAL DISCHARGE (PD) DETECTION APPARATUS FOR GAS-INSULATED EQUIPMENT 有权
公开(公告)号：US20220308105A1
公开(公告)日：2022-09-29
申请号：US17606088
申请日：2021-07-07
申请人： Wuxi Power Supply Branch of State Grid Jiangsu Electric Power Co., Ltd.
发明人： Jin Miao , Ping Chen , Yin Gu , Bin Fei , Xi Wu , Haiping Shen , Fen Huang , Zhaoyun Leng , Xinyang Zhou , Junfeng Wu , Jiefeng Wan
IPC分类号： G01R31/12
摘要： A partial discharge (PD) detection apparatus for gas-insulated equipment includes a photon collector, an optical splitter, a first photoelectric conversion module, an ultraviolet fluorescent crystal, a second photoelectric conversion module, and a signal processing module, where the ultraviolet fluorescent crystal is configured to convert a second optical radiation signal into an optical radiation signal of an ultraviolet fluorescence band, and the signal processing module is configured to calculate first apparent intensity based on a first voltage signal output by the first photoelectric conversion module, calculate second apparent intensity based on a second voltage signal output by the second photoelectric conversion module, and determine discharge intensity of the optical radiation based on a ratio of the second apparent intensity to the first apparent intensity. Technical solutions of the present disclosure are not affected by an unknown distance between a discharge position and a detection point.

19. 发明申请

US20220291272A1 EXPERIMENTAL DEVICE AND METHOD FOR TRIPPING PROPERTIES OF HIGH-VOLTAGE TRANSMISSION LINE IN SMOLDERING ATMOSPHERE 有权
公开(公告)号：US20220291272A1
公开(公告)日：2022-09-15
申请号：US17679986
申请日：2022-02-24
申请人： Nanjing Tech University
发明人： Fei You , Zhiliang Xu , Sheng Wang , Zhenhua Wang , Kai Shui , Yaopeng Zhao , Siyi Chen
IPC分类号： G01R31/00 , G01R31/12
摘要： An experimental device for tripping properties of a high-voltage transmission line in a smoldering atmosphere, including a central information processor, a biomass fuel (BMF) property characterization module, a smoldering generation module, a smoldering smoke field property test module, a power frequency supply module and a tripping property test module. The experimental device and method for tripping properties of a high-voltage transmission line in a smoldering atmosphere, the present disclosure can explore the development conditions, processes, modes, properties and mechanisms of discharge in the smoldering atmosphere, and fully characterize the BMF such as forest vegetations from multiple aspects, to reproduce properties of forest vegetations in corridor areas of the high-voltage transmission line in multiple working conditions and reflect influences of properties of ground forest vegetations on the tripping properties of the high-voltage transmission lines.

20. 发明授权

US11415620B2 Trending functions for partial discharge 有权
公开(公告)号：US11415620B2
公开(公告)日：2022-08-16
申请号：US15910106
申请日：2018-03-02
申请人： Rosemount Inc.
发明人： Jeffrey Charles Andle , Jonathan P. Murray , David J. Lane , Thomas M. Cunneen
IPC分类号： G01R31/14 , G01R31/12 , H02H1/00
摘要： A method of detecting a partial discharge in an electrical asset includes sensing of a discharge current in the electrical asset using a transducer and responsively providing a transducer output; processing the transducer output by comparing the transducer output to a baseline; calculating an accumulated amount by which the transducer output exceeds the baseline; decreasing the accumulated amount with time; detecting partial discharge in the electrical asset based upon the accumulated amount; and providing an output related to detected partial discharge. A partial discharge detection system for detecting a partial discharge in an electrical asset includes a transducer configured to receive a signal from the electrical asset generated due to an occurrence of partial discharging in the electrical asset and responsively providing a transducer output. Processing circuitry compares the transducer output to a baseline, calculates an accumulated amount by which the transducer output exceeds the baseline, decreases the accumulated amount with time, and detects partial discharge in the electrical asset based upon the accumulated amount. Output circuitry provides an output related to detected partial discharge.

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