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    ELECTRICITY METER AND SYSTEM HARDENED AGAINST ATTACK VECTORS
    1.
    发明公开
    ELECTRICITY METER AND SYSTEM HARDENED AGAINST ATTACK VECTORS 审中-公开

    公开(公告)号：US20240267368A1

    公开(公告)日：2024-08-08

    申请号：US18375947

    申请日：2023-10-02

    Applicant: Itron, Inc.

    Inventor： Timothy James Driscoll ,  Jeffrey Scott Bailey ,  Christopher Higgins

    IPC: H04L9/40 ,  H04L9/32

    CPC classification number: H04L63/0823 ,  H04L9/3271 ,  H04L63/064

    Abstract: An electricity meter and electricity system or grid that is hardened against attack vectors is described, and provided in part by automated multiple-factor authentication over multiple communication networks. In an example, a utility company may control an advanced metering infrastructure (AMI) network to provide internal communications. Metering devices may utilize customer's Wi-Fi to gain access to the internet, allowing electricity consumption data to be transmitted over the internet. Multiple authentication factors are used to prevent a bad actor from impersonating the metering device or cloud server. In an example, each metering device determines a secret, and sends the secret over the AMI network to a utility company server, and which relays the secret to the cloud server. The cloud server uses the secret to establish trust with metering devices. Additionally, the metering devices and the cloud server have signed certificates, which are used in additional authentication processes.

    Electric grid high impedance condition detection
    2.
    发明授权
    Electric grid high impedance condition detection 有权

    公开(公告)号：US10724977B2

    公开(公告)日：2020-07-28

    申请号：US16459329

    申请日：2019-07-01

    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.

    Efficient Collaboration between Meters under the Same Transformer
    4.
    发明申请
    Efficient Collaboration between Meters under the Same Transformer 有权

    公开(公告)号：US20250004022A1

    公开(公告)日：2025-01-02

    申请号：US18883984

    申请日：2024-09-12

    Applicant: Itron, Inc.

    Inventor： Timothy James Driscoll ,  Gokulmuthu Narayanaswamy ,  Robert Carl Sonderegger ,  Michael Hogan Dann

    IPC: G01R21/133 ,  G01R22/06

    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.

    Detection of electrical theft from a transformer secondary
    5.
    发明授权
    Detection of electrical theft from a transformer secondary 有权

    公开(公告)号：US10732203B2

    公开(公告)日：2020-08-04

    申请号：US15651860

    申请日：2017-07-17

    Applicant: Itron, Inc.

    Inventor： Timothy James Driscoll ,  Robert Sonderegger

    IPC: 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.

    Electric Grid High Impedance Condition Detection
    6.
    发明申请
    Electric Grid High Impedance Condition Detection 审中-公开
    电网高阻抗条件检测

    公开(公告)号：US20160327603A1

    公开(公告)日：2016-11-10

    申请号：US14702759

    申请日：2015-05-04

    Applicant: Itron, Inc.

    Inventor： Robert Sonderegger ,  Timothy James Driscoll

    IPC: G01R31/08 ,  G01N27/02

    CPC classification number: G01N27/02 ,  G01R19/2513 ,  G01R22/066 ,  G01R27/08 ,  G01R27/16 ,  G01R31/086 ,  G06Q10/06 ,  G06Q50/06 ,  H02J3/00 ,  H02J2003/007 ,  Y02E60/74 ,  Y02E60/76 ,  Y04S10/30 ,  Y04S10/522 ,  Y04S40/22

    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.

    Abstract translation: 本文描述了用于检测电网中的高阻抗条件的技术。 在一个示例中，针对电网内的多个位置中的每一个，例如在电表上计算阻抗。 阻抗可以被计算为电压变化除以电流变化，例如在顺序电压/电流测量之间。 可以保持统计，包括计算的阻抗。 在三个例子中，可以使用统计数据来识别多天内阻抗的增长，以识别多个小时内的阻抗增长，以及识别阻抗高于连接到单个变压器的其他仪表的阻抗的仪表。 在另一示例中，可以从所维护的统计信息中识别超过阈值的阻抗的实例。 由于包括成本和安全性在内的原因，可能会报告高阻抗情况。

    VOLTAGE GRID ANOMALY DETECTION
    9.
    发明公开
    VOLTAGE GRID ANOMALY DETECTION 审中-公开

    公开(公告)号：US20240210448A1

    公开(公告)日：2024-06-27

    申请号：US18089353

    申请日：2022-12-27

    Applicant: Itron, Inc.

    Inventor： Melvin James Gehrs ,  David Wu Ganger ,  Timothy James Driscoll ,  Chaitanya Ashok Baone

    IPC: G01R19/02 ,  G01R19/165

    CPC classification number: G01R19/02 ,  G01R19/16585

    Abstract: A method, apparatus, and computer-readable storage medium for detecting voltage anomaly in an electrical grid are provided. An electricity meter may collect voltage data by sampling a voltage waveform of the electrical grid at a preselected sampling rate; based on the voltage data, determine standard voltage waveform statistics of voltage of the electrical grid including statistical metrics; determine a range for the statistical metrics based on the standard voltage waveform statistics; at a preselected interval, calculate a statistical value of the statistical metrics of a present voltage waveform sampled at the preselected sampling rate for a preselected interval of the present voltage waveform; and in response to determining that the statistical value is outside of the range: capturing a predetermined number of cycles of voltage waveforms around the present voltage waveform, and sending an alarm to a remote computing device associated with the electrical grid.

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