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公开(公告)号：US20230318283A1
公开(公告)日：2023-10-05
申请号：US17709110
申请日：2022-03-30
Applicant: Itron, Inc.
Inventor： Timothy James Driscoll , Gokulmuthu Narayanaswamy
CPC classification number: H02H7/20 , H02H1/0007 , G01R23/15
Abstract: A method, apparatus, and system for disconnecting loads from the electrical grid based on a power line frequency are disclosed. An electricity meter may monitor a power line frequency of a source power line connected to the electricity meter, and in response to determining that the power line frequency is lower than a disconnect threshold frequency, may open an internal switch and disconnect a load side output of the electricity meter from the source power line.
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公开(公告)号：US11340264B2
公开(公告)日：2022-05-24
申请号：US16945835
申请日：2020-08-01
Applicant: Itron, Inc.
Inventor： Timothy James Driscoll , Robert Sonderegger
IPC: G01R19/00 , G01R11/24 , G01R19/165 , G01R22/06
Abstract: Techniques for identifying electrical theft are described herein. In an example, a secondary voltage of a transformer may be inferred by repeated voltage and current measurement at each meter associated with the transformer. A difference in measured voltage values, divided by a difference in measured current values, estimates impedance at the meter. The calculated impedance, together with measured voltage and current values, determine a voltage at the transformer secondary. Such voltages calculated by each meter associated with a transformer may be averaged, to indicate the transformer secondary voltage. A transformer having lower-than-expected secondary voltage is identified, based in part on comparison to the secondary voltages of other transformers. Each meter associated with the identified transformer may be evaluated to determine if the unexpected voltage is due to a load on the transformer. If a load did not result in the unexpected secondary voltage, power diversion may be reported.
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公开(公告)号：US10338017B2
公开(公告)日：2019-07-02
申请号：US14702759
申请日：2015-05-04
Applicant: Itron, Inc.
Inventor： Robert Sonderegger , Timothy James Driscoll
IPC: G01N27/02 , G01R19/25 , G06Q50/06 , G01R27/16 , G01R31/08 , G06Q10/06 , G01R22/06 , G01R27/08 , H02J3/00
Abstract: Techniques for detecting high impedance conditions in an electrical grid are described herein. In one example, impedance is calculated for each of a plurality of locations within the electrical grid, such as at electrical meters. The impedances may be calculated as a change in voltage divided by a change in current, such as between sequential voltage/current measurements. Statistics may be maintained, including the calculated impedances. In three examples, statistics may be used to identify growth in impedance over multiple days, to identify growth in impedance over multiple hours, and to identify a meter for which impedance is higher than impedance for other meters attached to a single transformer. In a further example, instances of impedance over a threshold value may be identified, from among the maintained statistics. The instances of high impedance may be reported for reasons including cost and safety.
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公开(公告)号：US09709604B2
公开(公告)日：2017-07-18
申请号：US14702756
申请日：2015-05-03
Applicant: Itron, Inc.
Inventor： Timothy James Driscoll , Robert Sonderegger
IPC: G01R11/24 , G01R19/165 , G01R22/06
CPC classification number: G01R11/24 , G01R19/165 , G01R22/066
Abstract: Techniques for identifying electrical theft are described herein. In an example, a secondary voltage of a transformer may be inferred by repeated voltage and current measurement at each meter associated with the transformer. A difference in measured voltage values, divided by a difference in measured current values, estimates impedance at the meter. The calculated impedance, together with measured voltage and current values, determine a voltage at the transformer secondary. Such voltages calculated by each meter associated with a transformer may be averaged, to indicate the transformer secondary voltage. A transformer having lower-than-expected secondary voltage is identified, based in part on comparison to the secondary voltages of other transformers. Each meter associated with the identified transformer may be evaluated to determine if the unexpected voltage is due to a load on the transformer. If a load did not result in the unexpected secondary voltage, power diversion may be reported.
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公开(公告)号：US12092668B2
公开(公告)日：2024-09-17
申请号：US17553442
申请日：2021-12-16
Applicant: Itron, Inc.
Inventor： Timothy James Driscoll , Gokulmuthu Narayanaswamy , Robert Carl Sonderegger , Michael Hogan Dann
IPC: G01R21/133 , G01R22/06 , G01R25/00
CPC classification number: G01R21/133 , G01R22/063
Abstract: In an electrical grid, several electricity meters may be associated with the same transformer, and may measure electricity sold to respective customers. In an example, one electricity meter executes manager software, while the other electricity meters execute agent software. One or more applications operated on each electricity meter, and control metrology devices, data processing, operation of radio(s) and/or a powerline communications modem, aspects of electrical phase determination, etc. The agent software operating on each electricity meter may relay messages from applications operating on that electricity meter to other (possibly similar) applications operating on other electricity meters. Each message sent by each instantiation of agent software may include a networking score of that electricity meter. The manager software may additionally communicate with a data collector and/or main office server(s). The manager software may select a replacement meter from among those connected to the same transformer to assume the role of executing manager software.
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Patent Agency Ranking
公开(公告)号：US11799286B1
公开(公告)日：2023-10-24
申请号：US17709110
申请日：2022-03-30
Applicant: Itron, Inc.
Inventor： Timothy James Driscoll , Gokulmuthu Narayanaswamy
CPC classification number: H02H7/20 , G01R23/15 , H02H1/0007
Abstract: A method, apparatus, and system for disconnecting loads from the electrical grid based on a power line frequency are disclosed. An electricity meter may monitor a power line frequency of a source power line connected to the electricity meter, and in response to determining that the power line frequency is lower than a disconnect threshold frequency, may open an internal switch and disconnect a load side output of the electricity meter from the source power line.
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公开(公告)号：US20230194582A1
公开(公告)日：2023-06-22
申请号：US17553442
申请日：2021-12-16
Applicant: Itron, Inc.
Inventor： Timothy James Driscoll , Gokulmuthu Narayanaswamy , Robert Carl Sonderegger , Michael Hogan Dann
IPC: G01R21/133 , G01R22/06
CPC classification number: G01R21/133 , G01R22/063
Abstract: In an electrical grid, several electricity meters may be associated with the same transformer, and may measure electricity sold to respective customers. In an example, one electricity meter executes manager software, while the other electricity meters execute agent software. One or more applications operated on each electricity meter, and control metrology devices, data processing, operation of radio(s) and/or a powerline communications modem, aspects of electrical phase determination, etc. The agent software operating on each electricity meter may relay messages from applications operating on that electricity meter to other (possibly similar) applications operating on other electricity meters. Each message sent by each instantiation of agent software may include a networking score of that electricity meter. The manager software may additionally communicate with a data collector and/or main office server(s). The manager software may select a replacement meter from among those connected to the same transformer to assume the role of executing manager software.
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公开(公告)号：US10459016B2
公开(公告)日：2019-10-29
申请号：US15831028
申请日：2017-12-04
Applicant: Itron, Inc.
Inventor： Timothy James Driscoll , Hartman Van Wyk , Robert Sonderegger , Chris Higgins
Abstract: Determination of electrical network topology and connectivity are described herein. A zero-crossing is indicated at a time when the line voltage of a conducting wire in an electrical grid is zero. Such zero-crossings may be used to measure time within a smart grid, and to determine the connectivity of, and the electrical phase used by, particular network elements. A first meter may receive a phase angle determination (PAD) message, including zero-crossing information, sent from a second meter, hereafter called a reference meter. The first meter may compare the received zero-crossing information to its own zero-crossing information. A phase difference may be determined between the first meter and the reference meter from which the PAD message originated. The first meter may pass the PAD message to additional meters, which propagate the message through the network. Accordingly, an electrical phase used by meters within the network may be determined.
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公开(公告)号：US20190323978A1
公开(公告)日：2019-10-24
申请号：US16459329
申请日：2019-07-01
Applicant: Itron, Inc.
Inventor： Robert Sonderegger , Timothy James Driscoll
Abstract: Techniques for detecting high impedance conditions in an electrical grid are described herein. In one example, impedance is calculated for each of a plurality of locations within the electrical grid, such as at electrical meters. The impedances may be calculated as a change in voltage divided by a change in current, such as between sequential voltage/current measurements. Statistics may be maintained, including the calculated impedances. In three examples, statistics may be used to identify growth in impedance over multiple days, to identify growth in impedance over multiple hours, and to identify a meter for which impedance is higher than impedance for other meters attached to a single transformer. In a further example, instances of impedance over a threshold value may be identified, from among the maintained statistics. The instances of high impedance may be reported for reasons including cost and safety.
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公开(公告)号：US09835662B2
公开(公告)日：2017-12-05
申请号：US14558571
申请日：2014-12-02
Applicant: Itron, Inc.
CPC classification number: G01R25/00 , G01D4/002 , G01D4/004 , G01D4/006 , Y02B90/241 , Y02B90/242 , Y02B90/243 , Y02B90/246 , Y04S20/32 , Y04S20/322 , Y04S20/325 , Y04S20/42 , Y04S20/48
Abstract: Determination of electrical network topology and connectivity are described herein. A zero-crossing is indicated at a time when the line voltage of a conducting wire in an electrical grid is zero. Such zero-crossings may be used to measure time within a smart grid, and to determine the connectivity of, and the electrical phase used by, particular network elements. A first meter may receive a phase angle determination (PAD) message, including zero-crossing information, sent from a second meter, hereafter called a reference meter. The first meter may compare the received zero-crossing information to its own zero-crossing information. A phase difference may be determined between the first meter and the reference meter from which the PAD message originated. The first meter may pass the PAD message to additional meters, which propagate the message through the network. Accordingly, an electrical phase used by meters within the network may be determined.
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