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公开(公告)号：WO2016179005A1
公开(公告)日：2016-11-10
申请号：PCT/US2016/030129
申请日：2016-04-29
申请人： ITRON, INC.
CPC分类号： 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
摘要： 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.
摘要翻译： 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（例如电表）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，可能会报告高阻抗的情况。
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公开(公告)号：WO2016178998A1
公开(公告)日：2016-11-10
申请号：PCT/US2016/030120
申请日：2016-04-29
申请人： ITRON, INC.
IPC分类号： G01R22/06
CPC分类号： G01R11/24 , G01R19/165 , G01R22/066
摘要： 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.
摘要翻译： 本文描述了用于识别电窃取的技术。 在一个示例中，可以通过在与变压器相关联的每个仪表处重复的电压和电流测量来推断变压器的次级电压。 测量电压值的差值除以测量电流值的差异，估计仪表的阻抗。 计算的阻抗与测量的电压和电流值一起确定变压器次级电压。 由与变压器相关联的每个仪表计算的这种电压可以被平均，以指示变压器次级电压。 部分地基于与其他变压器的次级电压的比较来识别具有低于预期的次级电压的变压器。 可以评估与识别的变压器相关联的每个仪表，以确定意外电压是否是由于变压器上的负载引起的。 如果负载没有导致意想不到的次级电压，则可能会报告功率分流。
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公开(公告)号：WO2015130819A1
公开(公告)日：2015-09-03
申请号：PCT/US2015/017571
申请日：2015-02-25
申请人： ITRON, INC.
发明人： SONDEREGGER, Robert
CPC分类号： G01R19/003 , G01R19/0084 , G06Q10/06 , G06Q50/06
摘要： Techniques for determining aspects of a topology of a smart grid are described herein, and particularly for determining if one or more electrical meters are connected to the same transformer. In one example, time-stamped voltage data is collected from at least two meters. The voltage data may indicate a slight transient change in voltage resulting from a consumer turning on or off an electrical load. In particular, the slight voltage changes may be sensed by all meters attached to a same transformer based on electrical load changes by any one of the customers on the same transformer. Using the time-stamped voltage data, a time-series of voltage-changes may be generated for each electrical meter. A correlation between the time-series of voltage-changes of pairs of meters may be calculated, to thereby determine an affinity between the meters, and particularly if they are connected to a same transformer.
摘要翻译： 本文描述了用于确定智能电网拓扑的方面的技术，特别是用于确定一个或多个电表是否连接到相同的变压器。 在一个示例中，从至少两米收集时间戳的电压数据。 电压数据可以指示由消费者打开或关闭电负载导致的电压的轻微瞬时变化。 特别地，基于相同变压器上的任何一个客户的电负载变化，附接到相同变压器的所有仪表可以感测到轻微的电压变化。 使用时间戳的电压数据，可以为每个电表产生时间序列的电压变化。 可以计算仪表对的电压变化的时间序列之间的相关性，从而确定仪表之间的亲和度，特别是如果它们连接到相同的变压器。
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公开(公告)号：WO2016090039A1
公开(公告)日：2016-06-09
申请号：PCT/US2015/063512
申请日：2015-12-02
申请人： ITRON, INC.
IPC分类号： G01D4/00
CPC分类号： 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
摘要： 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.
摘要翻译： 本文描述了电网拓扑和连通性的确定。 当电网中的导线的线路电压为零时，表示过零点。 这样的过零点可用于测量智能电网内的时间，并确定特定网络元件使用的连接性和电相位。 第一仪表可以接收从第二仪表（以下称为参考仪表）发送的包括过零信息的相位角确定（PAD）消息。 第一台仪表可以将接收到的过零信息与其自己的过零信息进行比较。 可以在第一计量器和来自该PAD消息的参考计量器之间确定相位差。 第一个仪表可能会将PAD消息传递给附加的传感器，通过网络传播信息。 因此，可以确定网络中的计量表使用的电相位。
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公开(公告)号：WO2015130823A1
公开(公告)日：2015-09-03
申请号：PCT/US2015/017575
申请日：2015-02-25
申请人： ITRON, INC.
发明人： SONDEREGGER, Robert
CPC分类号： G01R22/066 , G06Q50/06
摘要： Techniques for detecting electrical meter bypass theft are described herein. In one example, a time-series of voltage-changes and current-changes associated with electrical consumption measured at a meter are obtained. The time series may track associated voltage and current changes at short intervals (e.g., 5- minutes). The voltage and current changes may indicate a slight voltage change when an appliance is turned on or off. An analysis (e.g., a regression analysis) may be performed on the voltage-changes against the current-changes. Using the correlation from the analysis, it may be determined if the meter was bypassed.
摘要翻译： 本文描述了用于检测电表旁路盗窃的技术。 在一个示例中，获得与在仪表处测量的电消耗相关联的电压变化和电流变化的时间序列。 时间序列可以以短间隔（例如，5分钟）跟踪相关联的电压和电流变化。 当电器开启或关闭时，电压和电流变化可能表示轻微的电压变化。 可以针对电流变化对电压变化执行分析（例如，回归分析）。 使用分析的相关性，可以确定仪表是否被绕过。
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公开(公告)号：WO2013112639A1
公开(公告)日：2013-08-01
申请号：PCT/US2013/022814
申请日：2013-01-23
申请人： ITRON, INC.
CPC分类号： G01D4/002 , G06Q10/06 , G06Q50/06 , H04Q9/00 , H04Q2209/60
摘要： Techniques for analyzing a utility infrastructure are described herein. In one example, data is obtained from a utility system. The data may include consumption measurement information, consumption measurement exceptions and/or system events. Exceptions may include data indicating a possible problem, such as significantly increased or decreased consumption, reduced voltage, etc. Events may include data on power down actions, meter removal, etc. Attributes may be considered, including demographic information, weather information, economic information, etc. The data may be filtered by comparison to known patterns of measurements, exceptions, events and/or attributers that indicate an analytic event. Accordingly, analytic events may include important system information that is inferred from large quantities of data. Analytic events may be reported to an operator through operation of a user interface.
摘要翻译： 本文描述了用于分析公用事业基础设施的技术。 在一个示例中，从公用事业系统获得数据。 数据可以包括消费测量信息，消耗测量异常和/或系统事件。 异常可能包括指示可能的问题的数据，例如显着增加或减少的消耗，降低的电压等。事件可以包括关于掉电动作，仪表移除等的数据。可以考虑属性，包括人口统计信息，天气信息，经济信息 等等。可以通过与指示分析事件的已知测量模式，例外，事件和/或属性进行比较来过滤数据。 因此，分析事件可以包括从大量数据推断的重要的系统信息。 可以通过操作用户界面向操作者报告分析事件。
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