Device for measuring electrical consumption, system and method for detecting a non-technical loss using said measuring device.

A non-intrusive electricity consumption measuring device with wireless communication modules allows discreet and efficient detection of non-technical losses by comparing customer and network measurements, addressing the challenges of visibility and cost in existing methods.

FR3155067B1Active Publication Date: 2025-12-12ENEDIS
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Patent Information

Application Number
FR2023012092
Authority / Receiving Office
FR · FR
Patent Type
Patents
Current Assignee / Owner
Filing Date
2023-11-07
Publication Date
2025-12-12
Estimated Expiration
2043-11-07

AI Technical Summary

Technical Problem

Existing non-technical loss detection techniques in electricity distribution networks are costly, visible, and disruptive, making it difficult to detect fraud without arousing suspicion or incurring high installation costs.

Method used

A non-intrusive electricity consumption measuring device installed on the public network upstream of customer meters, using non-intrusive current and voltage probes, with wireless and bidirectional communication modules for discreet, safe, and efficient data transmission and comparison.

Benefits of technology

Enables quick, discreet, and cost-effective detection of non-technical losses by comparing customer and network measurements, reducing installation time and costs, and minimizing disruption.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

This disclosure relates to a device (23) for measuring electrical consumption, installed on a power supply line (24) of a public electricity distribution network upstream of a meter (13).It comprises: - a non-intrusive current probe configured to measure current flowing on the line (24), and voltage probes; - a module for generating electrical consumption measurement data from measurements provided by the probes; - a memory for recording measurement data; - a first wireless communication module, configured to transmit (E1) at least some of the measurement data, at a predetermined transmission frequency, to a server (47) of a public network operator; - a second bidirectional communication module configured to receive configuration data from a portable processing device (48) and to transmit (E2) the recorded measurement data to the portable processing device (48). Abstract figure: Figure 5.
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Description

Title of the invention: Device for measuring electrical consumption, system and method for detecting a non-technical loss using said measuring device. technical field

[0001] This disclosure relates to the field of electricity distribution and the monitoring of electricity consumption at a customer's installation, whether for a residential or business customer. More specifically, this disclosure focuses on reducing losses on an electricity distribution network, and in particular losses classified as non-technical losses. Previous technique

[0002] Given the rise in energy prices, and in particular electricity prices, it is important for the operator of an electricity distribution network to identify and reduce all losses likely to affect the network, including non-technical losses. The term non-technical loss, commonly denoted NTN, refers to an anomaly in electricity consumption metering, or user fraud, resulting in an underestimation of the actual electricity consumption of a customer installation, and therefore of the associated billing.

[0003] In the French electricity distribution network, approximately 50% of electricity meters are located inside the customer's home. A number of indicators may lead the electricity distributor to suspect a power line theft (PNT) involving a user of the electricity network. However, rectification can only take place after the theft has been actually confirmed. When the electricity meter is installed inside the user's home, a sworn agent must enter the customer's residence, which requires time and effort: indeed, the agent may encounter the customer's absence at the time of their visit or the customer's refusal to allow access to their home.

[0004] To solve this problem, it is known to install an additional electrical device on the public electricity network, called an electrical energy recorder. This recorder is installed outside the customer's home and records data relating to their electricity consumption. Such an electrical energy recorder is described, for example, in US patent document 2013 / 0307694. This data can then be compared to the reading from the meter installed in the user's home: any discrepancy makes it possible to identify a non-technical loss which, if it is in the customer's favor, may constitute intentional fraud. To reliably characterize this discrepancy, however, it is necessary to carry out data recordings over a sufficiently long period, typically a measurement campaign of several days.

[0005] However, electrical energy recorders of this type known to date have several drawbacks. First, they are usually expensive equipment, which the electricity distribution network operator uses for occasional measurements. The operator may be reluctant to leave them unattended on the public network for several days, both for reasons of value and safety. Furthermore, the network operator needs to have a large number of these recorders, to be installed near all customer installations where it suspects a non-technical loss, which therefore represents a high cumulative cost.

[0006] This problem is all the more acute because, to date, the installation of such electricity recorders cannot be carried out discreetly. Indeed, these devices are most often large and therefore easily visible in public spaces. Furthermore, when installing them on the customer's power supply line, it is sometimes recommended to temporarily disconnect the line to safely carry out the necessary connections for the technician when certain network components are aging. This power outage, even temporary, inevitably attracts the customer's attention. However, if the customer is committing fraud, it is particularly crucial not to arouse their suspicions, firstly so that they are not tempted to temporarily cease the fraud while waiting for the recording meter to be removed, and secondly so that they are not tempted to damage or remove the meter.

[0007] There is therefore a need for a non-technical loss detection technique on an electrical distribution network that does not present these various drawbacks. Summary

[0008] This disclosure improves the situation.

[0009] A device for measuring electricity consumption is proposed, configured to be installed on a power supply line of a public electricity distribution network upstream of a customer's electricity meter, comprising: - at least one non-intrusive current probe configured to measure current flowing on the power supply line without causing a line interruption during installation, and at least two voltage probes; - a module for generating electrical consumption measurement data from measurements provided by current and voltage probes; - a memory for recording measurement data according to a determined recording frequency; - a first wireless communication module, configured to transmit at least some of the measurement data, according to a determined transmission frequency, to a server of a public electricity distribution network manager; - a second bidirectional communication module configured to receive configuration data from a portable processing device and to transmit measurement data stored in memory to the portable processing device.

[0010] According to another aspect, a system for detecting a non-technical loss on an electricity distribution network is proposed, the system comprising: - at least one communicating electricity meter from at least one electrical installation of a customer, configured to transmit initial measurement data of the installation's electricity consumption, according to a determined transmission frequency, to a server of an electricity distribution network manager; - a device for measuring electricity consumption as described above, installed in the public electricity distribution network on an electrical supply line upstream of the communicating electricity meter(s), and configured to transmit second electrical consumption measurement data from the installation(s) according to the transmission frequency determined to the server; - a portable processing device, capable of connecting to the electrical consumption measurement device to transmit configuration data to it and to receive the second electrical consumption measurement data recorded in a memory of the measurement device, the portable processing device further comprising a communication module configured to transmit the second measurement data received to the server; - a module for comparing a sum of the first measurement data and the second measurement data of electrical consumption received by the server, capable of generating an indicator for detecting a non-technical loss on a portion of the network located downstream of the measurement device in the event of a divergence between the sum of the first measurement data and the second measurement data.

[0011] According to another aspect, a method is proposed for detecting a non-technical loss on a portion of an electricity distribution network, the portion comprising at least one customer's electrical installation including a communicating electricity meter, configured to transmit initial measurement data of the installation's electricity consumption, at a predetermined transmission frequency, to a server of an electricity distribution network operator. Such a method comprises: - a configuration of a device for measuring electrical consumption as described above, using a portable processing device; - an installation of the configured measuring device, on an electrical supply line upstream of the communicating electrical meter(s), without interrupting the line; - a generation of second power consumption measurement data from measurements provided by at least one current probe and at least two voltage probes of the measuring device; - a transmission of the second measurement data to the server of the electricity distribution network manager.

[0012] According to another aspect, a computer program is proposed that includes instructions for implementing all or part of a process as defined herein when this program is executed by a processor. According to another aspect, a non-transient, computer-readable recording medium is proposed on which such a program is recorded.

[0013] The features described in the following paragraphs may optionally be implemented independently of each other or in combination with each other:

[0014] The non-intrusive current probe belongs to the group comprising: - a current probe with an open toroid; - a Hall effect current sensor; - a Rogowski torus.

[0015] The measuring device is electrically powered by a current drawn by the voltage probes from the power supply line. Alternatively, the measuring device operates on a battery.

[0016] The configuration data belongs to the group comprising: - a customer identifier; - a determined recording frequency value; - a determined transmission frequency value; - the nature of the measurement data to be generated or emitted by the first wireless communication module.

[0017] The first wireless communication module is capable of communicating according to a LoRa type communication standard and the second communication module is capable of communicating with the portable processing device according to a wired communication technology.

[0018] The measuring device is sized to be installed in an individual electrical connection box, a floor distribution box, or an emergency access box, and is the same color as the box. It can also be installed in a transformer substation.

[0019] As part of the method for detecting a non-technical loss, the transmission of The second measurement data to the server is carried out by a first wireless communication module of the measuring device according to the determined transmission frequency and / or via a portable processing device in communication with a second bidirectional communication module of the measuring device.

[0020] Such a method also includes a comparison of a sum of the first measurement data of the portion and the second measurement data of electrical consumption received by the server, and a generation of an indicator for detecting a non-technical loss on the portion in the event of a divergence of the sum of the first measurement data and the second measurement data. Brief description of the drawings

[0021] Other features, details and advantages will become apparent from reading the detailed description below and from analyzing the accompanying drawings, in which: Fig. 1

[0022] [Fig.1] is a synoptic view of a customer installation of an electricity distribution network. Fig. 2

[0023] [Fig.2] shows an electrical consumption measurement device installed in an individual electrical connection box according to one embodiment. Fig. 3

[0024] [Fig.3] illustrates the different constituent elements of an electrical consumption measurement device according to one embodiment. Fig. 4

[0025] [Fig.4] is a synthetic diagram of the internal structure of an electrical consumption measurement device according to one embodiment. Fig. 5

[0026] [Fig.5] shows a non-technical loss detection system integrating an electrical consumption measurement device according to one embodiment. Fig. 6

[0027] [Fig.6] presents in the form of a histogram the comparison of the measurement data provided by the customer's electricity meter and by the electricity consumption measurement device according to one embodiment. Description of the implementation methods

[0028] Reference is now made to [Fig. 1], which shows a public space 1 and a private space 2 corresponding to the home of a customer of an electricity distribution network. By way of illustration, the customer's home in [Fig. 1] is a detached house. It could, of course, also be an apartment in a residential building, or an industrial or commercial facility.

[0029] The customer's property is equipped with a service circuit breaker, referenced 12, located upstream of the customer's electrical installation (referenced 22 in [Fig. 2]), and a meter, referenced 13, which measures the electricity consumption of their home. For example, this meter 13 is a smart meter, which transmits a daily reading of the customer's electrical installation's consumption to a remote server using Power Line Communication (PLC) technology.

[0030] An individual electrical connection box (QBE) referenced 10 is installed outside the customer's private property 2, in the public space 1. It allows the customer's home to be connected to the public electricity distribution network referenced 11. It constitutes the junction point between the public electricity distribution network and the electrical connection cable that links the network 11 to the customer's dwelling. It is located at the boundary between the public domain 1 and the customer's private property 2. If the customer's home is an apartment in a building, the box 10 is called a floor distribution box and serves the different apartments located on the same floor of the building. Generally, one floor distribution box is installed per floor of the building. These boxes 10 are generally locked and are accessible only to agents or technicians of the electricity distribution network.

[0031] The electricity consumption measurement device according to this disclosure, referenced 23, is intended to be installed in such a box referenced 10, i.e. on the public electricity distribution network, upstream of the customer's meter 13, and on the latter's power supply line referenced 24 (phase P and neutral N), as illustrated in [Fig. 2]. The device 23 is connected downstream of the circuit breakers 20 and 21 of the box 10.

[0032] It should be noted that in the example of Figures 1 and 2, a single-phase power supply line 24 is shown. However, throughout this document, the term "power supply line" refers to both a single-phase power supply line comprising one phase and a neutral and a three-phase power supply line comprising three phases. The power consumption measurement device 23 according to this disclosure can be configured for installation on a single-phase power supply line as well as on a three-phase power supply line.

[0033] The electricity consumption measurement device 23 enables, according to a new and inventive approach, the detection of non-technical losses on the electricity distribution network 11. Indeed, such an electricity consumption measurement device takes the form of a communicating electricity meter with instantaneous installation. Its elements are illustrated in [Fig. 3].

[0034] In one embodiment, it comprises a case, referenced as 31, in cream color, i.e., the same color as the box 10, into which it is therefore fully integrated Discretion is key, without attracting the attention of a potential fraudulent customer. In the example in [Fig. 3], three electrical cables are connected to the referenced box 31. These cables are preferably the same color as the power supply cables of the electrical supply line 24, again for the sake of discretion when installing the measuring device 23 in the enclosure 10. In this example, two of these electrical cables are connected to voltage probes referenced 34, and the last cable is connected to a current probe referenced 33. The number of voltage probes 34 must, of course, be adapted to the customer's electrical installation, from at least two for a single-phase meter to three or four for a three-phase meter. Similarly, for an installation on a three-phase electrical supply line 24, the electrical consumption measuring device 23 preferably includes three current probes 33, one for each of the three phases.

[0035] Thanks to the use of one or more non-intrusive current probes 33, such a measuring device 23 can be installed in a few seconds on the public electricity network 11, without interrupting the customer's service connection. The technicians' work is therefore facilitated, as it is quick and safe to install such a measuring device 23 in an individual electrical connection box or a floor distribution box 10 located on the public electricity distribution network 11. Furthermore, its installation is not easily detectable by the customer, since it is carried out without any interruption, even temporary, of the electricity supply, and thus allows the measurement of the electrical energy that the customer actually consumes, without arousing their suspicion.

[0036] In addition, such a measuring device 23 is communicative and allows the transmission of the customer's electrical energy consumption measurements to a server of the electricity distribution network manager, where they will be compared to the reading of the electricity meter 13 installed in the customer's property 2.

[0037] Such transmission can advantageously be carried out directly to the server via radio transmission. In one embodiment, this transmission conforms to the LoRa (Long Range) wireless transmission standard, which enables connected objects to transmit over long distances with low power consumption, for small data sizes at low data rates. It is advantageous for this transmission to be carried out according to the transmission frequency determined for the transmission of measurement data from the smart meter 13 installed at the customer's home 2. For example, for the French electricity distribution network managed by the Applicant, the smart meter installed at the customer's home transmits daily, shortly after midnight, the readings taken for the 24-hour period that has just ended.In this example, the electrical consumption measurement device 23 according to this disclosure therefore also transmits, . shortly after midnight, all or part of the measurement data it generated during the last 24 hours, so that it can be compared to the readings taken by the customer's meter.

[0038] Such a transmission is advantageous in that it allows a simple and quick comparison with the readings taken by the customer's meter 13, in the case where the measuring device 23 is installed in an area where radio coverage is satisfactory.

[0039] Such transmission can also be carried out indirectly to the server, via a portable processing device, which acts as a relay for the direct radio transmission, for example, when the measuring device 23 is installed in an area where radio coverage is insufficient. In this case, the measuring device 23 is advantageously equipped with a memory in which all the measurement data generated by the device 23 are recorded, preferably in time-stamped form. Such a portable processing device can be a smartphone, a tablet, or a laptop computer belonging to a sworn technician of the electricity distribution network operator.

[0040] These measurement data can then be retrieved by the portable processing device, from the memory of the measuring device: this retrieval can for example be carried out by a wired connection of the measuring device 23 to the portable processing device, for example a connection by USB cable 30 between the technician's smartphone and the measuring device 23.

[0041] In this case, the technician can, in a single reading operation, retrieve on his smartphone all the measurement data recorded in the memory of the measuring device 23 during a completed measurement campaign, for example corresponding to the last five days.

[0042] The portable processing device can also be used to configure the measuring device 23: when the technician connects his smartphone to the instant-installed communicating meter, he can configure the measurement data generation module so that it associates, for example, a customer identifier, or of his meter 13, with the measurement data it generates, as well as to define a measurement time step, or the nature of the measurement data to be generated (energy consumed, voltage, power, etc.). The technician can thus choose the frequency of recording measurement data in the memory of the measuring device 23, or the frequency of transmission of measurement data by the first wireless communication module.It can also choose which data is transmitted to the server by the first wireless communication module, and which is generated but simply stored in memory awaiting retrieval by the portable processing device.

[0043] In particular, one can imagine that the data generation module allows for generate more measurement data than that transmitted to the server by the first wireless communication module, which may be limited in terms of throughput or data volume. In this case, additional measurement data is generated but not transmitted at the predetermined transmission frequency, for example daily, to the server: instead, it is recorded in memory and retrieved by a technician when their portable processing device connects to the memory of the measurement device 23. This data can then be transmitted by this portable processing device to the server of the electricity distribution network operator as soon as communication is possible between these two devices, for example via WiFi® or 4G or 5G radio communication.

[0044] The coexistence of these two modes of communication of measurement data between the measurement device 23 and the server of the electricity distribution network manager makes it possible to ensure redundancy, and therefore to secure the retrieval of this data by the server, regardless of the installation conditions of the claimed measurement device, and in particular the coverage in means of communication of the area in which it is installed.

[0045] In addition, the measurement data sent daily to the server by the first wireless communication module, if it is operational, allows a quick initial opinion to be formed on the existence or not of a PNT, the extent, characteristics or nature of which can then be specified by analysis of the complete measurement data sent to the server by the second bidirectional communication module, via the portable processing device.

[0046] In one embodiment, the first wireless communication module and the second bidirectional communication module can be combined into a single communication module. These first and second communication modules, the memory, and the measurement data generation module are integrated into the housing referenced 31, which is preferably waterproof for outdoor installation. This waterproofing can be ensured by means of a sealing gasket around the perimeter of the housing 31.

[0047] As indicated above, the use of a non-intrusive current probe 33 makes it possible to measure the current without causing electrical interruptions when installing or removing the claimed measuring device 23.

[0048] In one embodiment, such a non-intrusive current probe 33 takes the form of an open-core current transformer. Open-core current transformers have the advantage of being very quick to install, thanks to an opening mechanism using a clip or button, and do not require centering the power cable relative to the transformer. They are compact and allow for reliable current measurement.

[0049] In another embodiment, in which the current to be measured is a current In continuous operation, the non-intrusive current probe 33 takes the form of a Hall effect current sensor. The Hall effect current sensor is a type of current sensor that uses the Hall effect to produce a voltage that is an exact representation (with a known proportionality factor) of the current being measured. Among its advantages are a relatively wide bandwidth, good galvanic isolation, and good immunity to interference.

[0050] In another embodiment, the non-intrusive current probe is a Rogowski coil, or a Neel effect current sensor. The advantage of a Rogowski coil compared to other types of current sensors is that it can be open and is very flexible, allowing it to be wound around a phase conductor without constraint.

[0051] The electrical consumption measurement device 23 can operate on a battery. In another embodiment, it is electrically powered by a current taken from the electrical supply line 24 of the customer installation by the voltage probes 34: thus, a battery is not required, which contributes to the compactness of the measurement device, and therefore to its discretion.

[0052] Indeed, as previously stated, such a measuring device 23 is designed to be installed in an individual electrical connection box (CIBE) or a floor distribution box 10, which are generally cramped and have limited space. The housing 31 is therefore preferably compact and as thin as possible so that it can be placed between two fuses in the box 10. In one embodiment, the housing 31 measures 9 cm x 5 cm x 2 cm. Its compact size contributes to its discreetness.

[0053] The housing 31 preferably has an attachment point allowing it to be easily suspended from the cables or attached to the box 10 during its installation by the technician.

[0054] In one embodiment, the voltage probes 34 are equipped with 4mm plugs (also called banana plugs), which allows them to be equipped, at choice, with crocodile clips referenced 35 or magnetic connectors referenced 32 (which stick to the screws of the live terminals, typically when the box 10 has an IP65 protection rating, i.e. it is dustproof and protected against water spray).

[0055] The method for detecting non-technical losses according to one embodiment is now presented in relation to Figures 4 and 5.

[0056] When the electricity distribution network operator wishes to verify the presence of PNT on a customer installation, a technician is sent to install an electricity consumption measurement device 23 in the cabinet 10, on the customer's power supply line 24, in the public network 1. Before its installation, The technician connects their smartphone 48 to the measuring device 23, for example, using a USB cable. The smartphone 48 then communicates with the C0MM_2 communication module 42 and transmits various configuration data, such as a customer ID, the type of measurements to be taken, and the measurement interval. This smartphone configuration eliminates the need for a configuration interface on the measuring device 23, such as a keyboard and screen, making the device 23 more compact and therefore more discreet. Once this configuration phase is complete, the technician mounts the measuring device 23 in the enclosure 10 and connects the voltage probes 34 and current probes 33 to the various cables of the power supply line 24.This installation is carried out without interrupting the power supply to the customer's installation, in complete safety, thanks to the use of a non-intrusive current probe 33. After closing the box 10, the technician can leave the area, to which he will only return at the end of the measurement campaign, which may last several days.

[0057] The configuration data received by the communication module COMM_2 42 is stored in a memory MEM 44 of the device 23. A processor PROC 45 controls the measurement data generation module GEN_DATA 43, based on this configuration data. The GEN_DATA 43 module receives the measurements MES 46 performed by the current 33 and voltage 44 probes to which it is connected. At least a portion of this measurement data is sent (E1), according to a predetermined transmission frequency (for example, daily shortly after midnight), by the communication module COMM_1 41 to a server 47 of the electricity distribution network operator. This transmission E1 is carried out, for example, via radio, according to the LoRa® transmission standard.

[0058] In parallel, all the measurement data generated by the GEN_DATA module 43 are recorded in the MEM memory 44, according to the measurement step configured during initialization. At the end of the measurement campaign, the technician returns to the site, disconnects the measuring device 23 and removes it from the enclosure 10. He can then reconnect his smartphone 48 to the device 23, via USB cable, to retrieve (E2), via the COMM-2 communication module, all the measurement data that were recorded in the MEM memory 44. As soon as the smartphone 48 has access to a cellular (3G, 4G, 5G) or local (Wi-Fi®, for example) communication network, it transmits (E3) all this data to the server 47 of the electricity distribution network operator.

[0059] The server 47 therefore receives the measurement data from the device 23, either directly (E1) by radio, or indirectly (E2, E3) via the smartphone 48. In parallel, it also receives daily the customer's electricity consumption readings, which are sent to it (E4) by the communicating meter 13 installed at the customer's home. client. A comparison module, within server 47, allows comparison of the data received from the counter 13 and the measuring device 23, and detection of a non-technical loss in case of divergence of these data.

[0060] The result of this comparison can be provided to the technician in the form of a histogram 50, as illustrated in [Fig. 6]. This histogram 50 can be displayed directly on the screen of the smartphone 48, or accessed on a website that the technician can consult using a PC.

[0061] The histogram 50 displays the daily energy consumed by the customer, as measured by the meter 13, used for billing, and by the measuring device 23. When the energy measured by the measuring device 23 is higher than that measured by the conventional meter 13, a non-technical loss is highlighted. The histogram 50 also displays, as a horizontal line, the maximum power measured by the meter 13 and by the measuring device 23. This can highlight any modification of the meter 13 by the fraudulent customer to obtain a maximum power exceeding that of their contracted power. Other visual representations of the compared measurement data can be provided, such as energy curves, voltage events, cumulative energy, and voltage, depending on the data measured by the device 23.

[0062] The electricity consumption measurement device 23 described in this disclosure provides at least two decisive advantages: if the customer is not committing fraud, the sworn agent does not waste time trying to gain entry to the dwelling unnecessarily and can check the customer's consumption without having to enter the premises. The quality of the customer relationship is therefore not affected by a suspicion of fraud that ultimately proves unfounded. Conversely, if the customer is committing fraud, the sworn agent can inform them at the doorstep of the observed discrepancy between the actual consumption and the reading (billed) on the electricity meter.

[0063] The embodiments described above in relation to Figures 1 to 6 relate to an application context of this disclosure in which the network operator suspects fraud by a customer and uses the electricity consumption measurement device 23 to dispel any doubt as to the existence of such fraud. In a further embodiment, this device 23 can also be used for larger-scale fraud detection on the electricity distribution network.

[0064] To this end, the measuring device 23 is configured to be installed on a three-phase power supply line 24, in the electrical network's emergency distribution boxes, from which one or more network branches can be created. The device 23 can collect the total energy drawn by customers downstream of the device and thus detect any discrepancy between the actual consumption measured by device 23 and the sum of the energies measured daily by the individual communicating electricity meters of all customers located downstream of the emergence box.

[0065] For example, if the device 23 is located at a transformer supplying a cluster of customer installations, it is possible to measure the electrical consumption of the entire cluster using the measuring device 23. Alternatively, the device can also be installed in a distribution box supplying a subset of the cluster of customer installations. Each of the communicating electricity meters in the cluster also measures daily the energy produced by the electricity generation equipment of each customer installation—such as photovoltaic panels, for example—subtracting this from the total.By comparing these two electrical consumption values ​​for the cluster, it is possible to detect a discrepancy, and, depending on its value, to identify whether it results from technical losses due to the Joule effect on the cluster's power cables, or whether it more likely reflects the existence of non-technical losses.

[0066] By moving the device 23 further downstream on the cluster, and by carrying out another measurement campaign on one of the branches of the cluster's supply tree, it then becomes possible to locate more and more precisely by dichotomy the area in deviation until the fraudulent customer is identified.

[0067] Alternatively, it is possible to leave the device 23 in the emergency junction box in which it was installed, and to add several secondary measuring devices 23, for example, one on each branch of the cluster's tree network. For each of these secondary devices 23, a comparison is then made again between the electrical consumption measured by the secondary measuring device 23 and the sum of the electrical consumptions reported by the communicating electricity meters of the customer electrical installations on the branch on which the secondary measuring device 23 is installed. A discrepancy in the consumptions measured at one of the secondary measuring devices 23 makes it possible to identify the branch of the cluster on which the PNTs occur.By placing measuring devices 23 further and further downstream on the network, it is ultimately possible to precisely identify the fraudulent customer electrical installation(s).

[0068] By using a moderate number of measuring devices 23, it is thus possible for the electricity distribution network manager to have a new capacity to detect fraud, thanks to the design of electricity consumption measuring devices 23 which are compact, therefore discreet, and can be installed in just a few minutes at any point in the electricity distribution network.

Claims

Demands

1. A device (23) for measuring electrical consumption, configured to be installed on a power supply line (24) of a public electricity distribution network upstream of a customer's electricity meter (13), comprising: - at least one non-intrusive current probe (33) configured to measure a current flowing on said power supply line without causing an interruption of said line (24) during installation, and at least two voltage probes (34); - a module (43) for generating electrical consumption measurement data from measurements (46) provided by said current and voltage probes; - a memory (44) for recording said measurement data at a determined recording frequency;- a first wireless communication module (41), configured to transmit at least some of said measurement data, according to a determined transmission frequency, to a server (47) of a manager of said public electricity distribution network; - a second bidirectional communication module (42) configured to receive configuration data from a portable processing device (48) and to transmit said measurement data recorded in the memory of said portable processing device.

2. A device for measuring electrical consumption according to claim 1, characterized in that said at least one non-intrusive current probe (33) belongs to the group comprising: - an open-core current transformer; - a Hall effect current sensor; - a Rogowski coil; - a Neel effect current sensor.

3. Device for measuring electrical consumption according to any one of claims 1 and 2, characterized in that it is electrically powered by a current taken by said at least two voltage probes (34) from said electrical supply line (24).

4. A device for measuring electrical consumption according to any one of claims 1 to 3, characterized in that said configuration data belong to the group comprising: - a customer identifier; - a value of said recording frequency determined; - a value of said transmission frequency determined; - a nature of said measurement data to be generated or transmitted by said first wireless communication module.

5. A device for measuring electrical consumption according to any one of claims 1 to 4, characterized in that said first wireless communication module (41) is capable of communicating according to a LoRa type communication standard and in that said second communication module (42) is capable of communicating with said portable processing device (48) according to a wired communication technology.

6. Device for measuring electrical consumption according to any one of claims 1 to 5, characterized in that it is sized to be able to be installed in an individual electrical connection box (10) or a floor distribution box (10) or an emergency box and in that it is the same color as said box.

7. A system for detecting a non-technical loss on an electricity distribution network, said system comprising: - at least one communicating electricity meter (13) of at least one electrical installation of a customer, configured to transmit first measurement data of electricity consumption of said installation, according to a determined transmission frequency, to a server (47) of an operator of said electricity distribution network; - a device (23) for measuring electricity consumption according to any one of claims 1 to 6, installed in said public electricity distribution network (11) on an electrical supply line (24) upstream of said at least one communicating electricity meter (13), and configured to transmit second measurement data of electricity consumption of said at least one installation according to said determined transmission frequency to said server;- a portable processing device (48), capable of connecting to said electrical consumption measurement device to transmit configuration data to it and to receive said second electrical consumption measurement data recorded in a memory (44) of said measurement device, said portable processing device further comprising a configured communication module; to transmit (E3) said second measurement data received to said server; - a comparison module of a sum of said first measurement data and said second measurement data of electrical consumption received by said server, capable of generating a detection indicator (50) of a non-technical loss on a portion of said network located downstream of said measurement device in the event of a divergence of said sum of said first measurement data and said second measurement data.

8. A method for detecting a non-technical loss on a portion of an electricity distribution network, said portion comprising at least one customer's electrical installation including a communicating electricity meter (13), configured to transmit initial measurement data of electricity consumption of said installation, according to a determined transmission frequency, to a server (47) of an operator of said electricity distribution network, characterized in that said method comprises: - a configuration of a device (23) for measuring electricity consumption according to any one of claims 1 to 6, by means of a portable processing device (48); - an installation of said configured measuring device, on an electricity supply line (24) upstream of said at least one communicating electricity meter, without interrupting said line;- a generation of second measurement data of electrical consumption from measurements provided by at least one current probe (33) and at least two voltage probes (34) of said measuring device; - a transmission (E1-E3) of said second measurement data to said server (47) of the manager of said electricity distribution network.

9. Method for detecting a non-technical loss according to claim 8, characterized in that said transmission of said second measurement data to said server is carried out by a first wireless communication module of said measurement device according to said determined transmission frequency and / or by means of a portable processing device in communication with a second bidirectional communication module of said measurement device.

10. Method for detecting a non-technical loss according to any of claims 8 and 9, characterized in that it also includes a comparison of a sum of said first measurement data of said portion and said second measurement data of electrical consumption received by said server, and a generation of an indicator for detecting a non-technical loss on said portion in the event of a divergence of the sum of said first measurement data and said second measurement data.