electrical isolation method for a photovoltaic system and electrical assembly

Abstract

The invention relates to a method for the programmed isolation of at least one photovoltaic system (1) configured to be electrically connected to a domestic electrical network (2), the photovoltaic system (1) being connected to an electrical outlet (25) of an electrical circuit (24) located downstream of a main circuit breaker (22) so as to be able to inject into the domestic electrical network (2) electrical energy obtained by transformation of incident solar energy, the programmed isolation method allowing the photovoltaic system (1) to be electrically disconnected remotely according to predetermined operating conditions. Figure to be published with the abstract: Fig. 1

Description

Title of the invention: Method for electrically isolating a photovoltaic system and electrical assembly

[0001] The technical context of the present invention is that of photovoltaic or solar panels. More particularly, the invention relates to a method of electrically isolating a photovoltaic system and an electrical assembly.

[0002] The scope of the present invention relates exclusively to the field of photovoltaic energy production for individual users, as opposed to photovoltaic parks or photovoltaic installations designed to produce large quantities of energy, on the order of several megawatts, to supply electricity to neighborhoods, cities, or industrial sites. Thus, the scope of the present invention relates to photovoltaic systems producing several kilowatts of electrical energy from solar or photovoltaic energy.

[0003] Year after year, global warming is an increasingly pressing concern, whether for individuals or industry, leading to the development of alternative energies, such as solar energy, in order to reduce greenhouse gas emissions.

[0004] Solar energy has, among other things, the advantages of being inexhaustible, ecological, and of having seen its price decrease sharply in recent years, making it competitive with conventional energy sources, such as oil, nuclear, etc. Solar energy being the alternative energy with the strongest growth.

[0005] As is known, a photovoltaic panel installed on the roof or wall of a building maximizes the amount of solar energy received by the panel and optimizes its electricity production. Once installed, the photovoltaic panel is connected to the domestic electrical grid so that the electrical energy thus produced can be fed into the grid.

[0006] The development of photovoltaic systems that can be directly connected to domestic electrical networks via a direct electrical connection to an electrical outlet is increasing. Given the rise and proliferation of such "plug and play" photovoltaic systems, meaning they are immediately usable after connection, it is becoming necessary to offer various functionalities to improve the user experience of these photovoltaic systems, their efficiency, their adaptability, and their diagnostic and troubleshooting capabilities.

[0007] To these ends, and according to a first aspect of the invention, at least one of the aforementioned objectives is achieved with a programmed isolation method for at least one photo- system tovoltaics, each photovoltaic system comprising:

[0008] - a photovoltaic panel configured to generate a continuous electrical signal of output from solar energy;

[0009] - an inverter configured to transform the generated output direct current electrical signal by the photovoltaic panel into an alternating electrical signal suitable for a domestic electrical network;

[0010] - an electrical cable, one end of which is electrically connected to the inverter and a second end includes an electrical connection device allowing the photovoltaic system to be electrically coupled to the domestic electrical network;

[0011] - a control module electrically connected to the inverter and the device electrical connection, the control module comprising (i) an electrical coupling device configured to selectively connect said at least one photovoltaic system to the domestic electrical network, the electrical coupling device being configured in a closed state and, to disconnect said at least one photovoltaic system from the domestic electrical network, the electrical coupling device being configured in an open state, and (ii) means of communication with a remote server.

[0012] The programmed isolation method according to the invention includes a step of receiving by the control module an electrical isolation command and a step of configuring the electrical coupling element in its open state.

[0013] In the context of the present invention, the photovoltaic system takes the form of a domestic photovoltaic installation configured to produce at most a few kilowatt-hours per day. The photovoltaic system is thus an electrical assembly that can be connected directly to the domestic electrical grid via its electrical cable and a standard household electrical outlet. In the context of the invention, the photovoltaic system is not an industrial installation.

[0014] In the context of the present invention, the photovoltaic panel comprises one or more solar panels. Each solar panel is configured to convert solar energy into electrical energy, and optionally thermal energy. Solar energy is understood here to be light energy transported by incident solar radiation. Generally, the solar panel comprises a plurality of photovoltaic solar cells enabling the transformation of solar energy into electrical energy. In the context of the present invention, limited to domestic use, the photovoltaic panel has a solar panel surface area of ​​a few square meters, or even several tens of square meters. Generally, the photovoltaic panel has a solar panel surface area in less than 100 m². Additionally, the photovoltaic system also includes a mounting device that allows the photovoltaic panel to be securely fixed to a support and to be tilted relative to at least one axis of rotation. The support can be of any type, intended use, shape, or orientation. For example, a wall, a roof, or even a terrace could be advantageously used.

[0015] In the context of the present invention, a domestic electrical network is a domestic electrical installation such as those found in individual or multi-family dwellings. Such a domestic electrical network includes a main circuit breaker that isolates the domestic electrical network from the electrical distribution network. Downstream of the main circuit breaker, the domestic electrical network generally includes one or more electrical consumers, such as, for example, lighting sources, heating sources, and household appliances. The electrical consumers are located within the dwelling, each consumer being connected to the main circuit breaker via an electrical circuit, preferably through a dedicated circuit breaker that protects said electrical circuit. The main circuit breaker protects all the electrical circuits located downstream.In the context of the present invention, the photovoltaic system is integrated into such a domestic electrical network, thus becoming an electrical producer associated with the aforementioned electrical consumers.

[0016] In the context of the present invention, the control module is an electronic unit located between the photovoltaic panel and the electrical outlet through which the photovoltaic system is connected to the domestic electrical grid. The control module allows the photovoltaic system to interface and to implement certain technical functionalities that will be described below. Most advantageously, the control module facilitates the electrical interface of the photovoltaic system with the domestic electrical grid, adapting to its installation, the user's needs, and the intended use.

[0017] In the context of the present invention, the electrical coupling element is an electrical device that can be selectively configured to establish an electrical connection or to electrically isolate the photovoltaic system from the domestic electrical grid. By way of non-limiting example, the electrical coupling element may be a switch, an electrical relay, or one or more electrical transistors.

[0018] In the context of the present invention, the inverter comprises a DC-to-AC converter, single-phase or polyphase, or a DC-to-AC converter, single-phase or polyphase. Thus, the inverter makes it possible to adapt the electrical signals directly produced by the The photovoltaic panel generates signals and electrical energy compatible with a domestic alternating current (AC) and polyphase electrical network. In this way, the photovoltaic system produces alternating current that can be directly fed into – and is fed into – the domestic electrical grid.

[0019] Thus, the programmed isolation method according to the invention allows the opening of the coupling element in the control module to be controlled following a command received remotely. The photovoltaic system thus becomes remotely controllable and controllable via the control module and the electrical coupling element. Therefore, the invention, in accordance with its first aspect, makes domestic photovoltaic systems more agile and adaptable to real-world operating and usage conditions by individuals in their homes.

[0020] By way of non-limiting example, the invention according to its first aspect also makes it possible to remotely and electrically isolate the photovoltaic system in anticipation of a storm or, more generally, in response to any weather event, in order to prevent the control module, inverter, or photovoltaic panel from being damaged by a potential power surge in the domestic electrical network resulting, for example, from a lightning strike. In other words, in the context of the present invention, the electrical isolation command can be sent manually or automatically, following any type of event triggering said transmission, for example, following a weather event or any other signal.

[0021] The programmed isolation method according to the first aspect of the invention advantageously comprises at least one of the following improvements, the technical characteristics forming these improvements being able to be taken alone or in combination:

[0022] - the communication step is of the wireless communication type, such as by example of the type of telecommunication, in particular according to one of the 3G, 4G, 5G or later standards, or according to a radio frequency communication protocol such as for example the long distance protocol LoRa, English acronym for "Long Range", or according to one of the protocols governed by the IEEE802.11 standard - known as wifi - or IEEE 802.15 known as Bluetooth;

[0023] - the communication step is of the type of wired communication, such as by example carried out through power line communication, through optical fiber or through a network cable, or even through a serial link;

[0024] - the step of receiving the electrical isolation command is, for example consecutive to a step of detecting any climatic event, such as for example the detection of a thunderstorm or a storm. Thus, the step of configuring the electrical coupling element in its open state allows for electrical isolation and remotely monitor the photovoltaic system in anticipation of the detected weather event, in order to prevent the control module or the inverter or the photovoltaic panel from being damaged, for example by a possible electrical surge in the domestic electrical network following a lightning strike.

[0025] According to a first exploitation of the electrical isolation method according to the first aspect of the invention, the invention aims to provide an anti-theft function for at least one photovoltaic system. To this end, the electrical isolation method according to the first aspect of the invention comprises at least one of the following improvements:

[0026] - the electrical coupling element is configured to remain in its open state as long as the control module does not receive a power reconnection command. In other words, the electrical isolation process includes a step of locking the electrical coupling element in its open state, so that it is no longer possible to connect the photovoltaic system to the domestic electrical grid. Advantageously, the coupling element is configured to remain in its open state even when the control module is not powered. Alternatively, the coupling element can be configured to remain in its closed state even when the control module is not powered.In addition, when the electrical reconnection command has been sent previously, it is recorded in a memory area of ​​the control module, so that when the control module is electrically connected to the domestic electrical network, then the coupling device opens so as to electrically isolate the photovoltaic system from said domestic electrical network; .

[0027] - the electrical insulation method according to the first aspect of the invention includes a subsequent unlocking step following the receipt of an electrical reconnection command from the photovoltaic system by the control module, the unlocking step including a configuration step of the electrical coupling device in its closed state. Thus, the receipt of a particular electrical reconnection command, transmitted for example from the remote server to which the control module is connected, allows the control module to be unlocked and the photovoltaic system to be reconnected to the domestic electrical network;

[0028] According to a second exploitation of the electrical isolation method according to the first aspect of the invention, the invention aims to provide a function for reducing electrical consumption during periods unsuitable for the use of at least one photovoltaic system. To this end, the electrical isolation method according to the first aspect of the invention comprises at least one of the following improvements:

[0029] - the electrical insulation method according to the first aspect of the invention This includes a step of defining initial time periods during which the electrical coupling device is configured in its closed state, and subsequent time periods during which the electrical coupling device is configured in its open state. The initial time periods correspond to daytime hours at the location of the photovoltaic system, during which it is desirable and expected that the photovoltaic system be connected to the domestic electrical grid; and the subsequent time periods correspond to nighttime hours during which it is not necessary for the photovoltaic system to be connected to the domestic electrical grid. This advantageous configuration thus prevents the photovoltaic system from consuming unnecessary electrical energy. This corresponds to a standby mode.

[0030] - according to a first alternative, the first time slots and the second Time slots are defined and recorded on the remote server, the remote server transmitting (i) the electrical isolation command at the beginning of the second time slots, (ii) the electrical reconnection command at the beginning of the first time slots;

[0031] - according to a second alternative, the control module includes a clock Internally, the first and second time slots are defined and recorded on the control module, the control module controlling the electrical coupling device so as to electrically isolate the photovoltaic system at the beginning of the second time slots, and to electrically couple the photovoltaic system to the domestic electrical network at the beginning of the first time slots.

[0032] According to a third embodiment of the electrical isolation method according to the first aspect of the invention, the invention aims to provide a remote restart function for at least one photovoltaic system. To this end, the electrical isolation method according to the first aspect of the invention comprises a restart step for the photovoltaic system module, the restart step including the electrical isolation step, a time delay step following the isolation step, and a closing step for the electrical coupling element performed after the time delay step.

[0033] According to a second aspect of the invention, an electrical assembly is proposed comprising a domestic electrical network and at least one photovoltaic system, each photovoltaic system comprising:

[0034] - a photovoltaic panel configured to generate a continuous electrical signal of output from solar energy;

[0035] - an inverter configured to transform the generated output direct current electrical signal by the photovoltaic panel into an alternating electrical signal suitable for the grid domestic electricity;

[0036] - an electrical cable, one end of which is electrically connected to the inverter and a second end includes an electrical connection device allowing the photovoltaic system to be electrically coupled to the domestic electrical network;

[0037] - a control module electrically connected to the inverter and the device electrical connection, the control module comprising (i) an electrical coupling element configured to selectively connect said at least one photovoltaic system to the domestic electrical network, the coupling element being configured in a closed state and, to disconnect said at least one photovoltaic system from the domestic electrical network, the coupling element being configured in an open state, and (ii) means of communication with a remote server, the control module being configured to implement the isolation method according to the first aspect of the invention or according to any of its improvements.

[0038] Various embodiments of the invention are provided, incorporating, according to all their possible combinations, the different optional features set out here.

[0039] Other features and advantages of the invention will become apparent from the following description on the one hand, and from several illustrative and non-limiting examples of embodiments given with reference to the accompanying schematic drawings on the other hand, in which:

[0040] [Fig-1] illustrates a schematic view of an electrical assembly according to the invention, implementing a photovoltaic system in a domestic electrical network;

[0041] [Fig.2] illustrates a schematic view of an example of the realization of a control module of the photovoltaic system of the [Fig.1];

[0042] [Fig.3] illustrates a synoptic view of the programmed isolation process according to the first aspect of the invention.

[0043] Of course, the features, variants, and different embodiments of the invention can be combined in various ways, provided they are not incompatible or mutually exclusive. In particular, variants of the invention may be conceived comprising only a selection of features, described hereafter in isolation from the other described features, if this selection of features is sufficient to confer a technical advantage or to differentiate the invention from the prior art.

[0044] In particular, all the variants and embodiments described are combinable with each other if there is no technical obstacle to this combination.

[0045] In the figures, the elements common to several figures retain the same reference.

[0046] With reference to [Fig. 1], the field of the invention is specifically that of domestic electrical installations, within a single-family dwelling 4 or a multi-family dwelling 4. More particularly, the invention relates to the electrical connection of one or more photovoltaic systems 1 to a domestic electrical network 2.

[0047] The domestic electrical network 2 addresses all electrical devices within the dwelling 4, or directly connected to said dwelling 4. The domestic electrical network 2 differs from an electrical distribution network which is intended to supply the dwelling 4 with the electrical energy necessary for the operation of its electrical devices.

[0048] The domestic electrical network 2 can be isolated or connected to the electrical distribution network via a main circuit breaker 22 of an electrical panel 23 placed at the input of the domestic electrical network 2. Then, several electrical circuits 24 extend from the electrical panel 23, downstream of the main circuit breaker 22, to several electrical consumers.

[0049] In the context of the invention, electrical consumers are electrical devices, electrical appliances, which use electrical energy supplied by the domestic electrical network 2, via the electrical distribution network, to operate. By way of non-limiting examples, such electrical consumers may be lamps, household appliances, a television or a wireless communication module.

[0050] In particular, the context of the invention is also limited to one or more photovoltaic systems 1 connected to one of the electrical outlets of the domestic electrical network 2. In the case where the domestic electrical network 2 includes several distinct photovoltaic systems 1, for example associated with different roof elements or arranged according to different cardinal orientations, then it is preferable that each photovoltaic system 1 be associated with a different electrical circuit 24, or with a different electrical outlet 25.

[0051] Such photovoltaic systems 1 comprise:

[0052] - a photovoltaic panel 11 configured to generate a continuous electrical signal output from solar energy. The photovoltaic panel 11 comprises one or more solar panels, each solar panel being configured to convert solar energy into electrical energy, and possibly thermal energy. The photovoltaic panel 11 has a solar panel surface area of ​​a few square meters, or even several tens of square meters. Generally, the photovoltaic panel 11 has a solar panel surface area of ​​less than 100 m². The photovoltaic panel 11 is placed in the immediate vicinity of the dwelling 4, so that it can be directly connected to the electrical outlet 25 of the electrical network. mestique 2. Complementarily, the photovoltaic system 1 also includes a fixing device allowing, on the one hand, the photovoltaic panel 11 to be fixed securely to a support - a wall, a roof, a terrace - and, on the other hand, the said photovoltaic panel 11 to be tilted relative to at least one axis of rotation;

[0053] - an inverter 12 configured to transform the output direct current electrical signal generated by the photovoltaic panel 11 into an alternating electrical signal suitable for a domestic electrical network 2. More particularly, the inverter 12 includes a direct voltage converter into an alternating voltage, in order to be able to inject the thus converted alternating electrical signal into a phase P2 of the domestic electrical network 2;

[0054] - an electrical cable 14, one end of which is electrically connected to the inverter 12 and a second end 15 includes an electrical connection device allowing the photovoltaic system 1 to be electrically coupled to an electrical outlet 25 of the domestic electrical network 2;

[0055] - a control module 13 electrically connected to the inverter 12 and to the device electrical connection, the control module 13 comprising (i) an electrical coupling element 134 configured to selectively connect said at least one photovoltaic system 1 to the domestic electrical network 2, the electrical coupling element 134 being configured in a closed state and, to disconnect said at least one photovoltaic system 1 from the domestic electrical network 2, the electrical coupling element 134 being configured in an open state, and (ii) means for communicating with a remote server.

[0056] The electrical coupling element 134 takes the form of a relay or a switch of any type, the electrical coupling element 134 being controlled by the control module 13 in order to be able to control its state, open or closed, according to an isolation command received by the control module 13.

[0057] With reference to [Fig. 2], the control module 13 comprises a housing containing:

[0058] - a power supply unit 131 electrically connected to the electrical network domestic 2, and more particularly to a phase P2 and to a neutral PI of said domestic electrical network 2, so as to allow operation of the control module 13;

[0059] - a communication unit 132, preferably wireless, allowing the module communication to receive, and possibly transmit, respectively commands and parameters. The commands received by the control module 13 via its communication unit 132 are sent by a remote server not shown in the FIGURES, while the parameters are technical data characteristic of the photovoltaic system 1 and possibly the domestic electrical network 2s and which can be transmitted by the control module 13 in order to enable the performance of certain more complex technical functions. In the context of the invention, the communication unit 132 is for example of the type of a telecommunications chip, for example according to one of the 3G, 4G, 5G or higher protocols, or of the type of a WIFI chip, Bluetooth or a LoRa type radio frequency communication chip;

[0060] - a metrology unit 133 comprising one or more sensors configured for to measure an electric current produced by the photovoltaic system 1 and / or an electric voltage produced by the photovoltaic system 1 and / or a phase shift between the current and the voltage. For this purpose, the metrology unit 133 includes a shunt resistor 135 placed on the phase P2 of the domestic electrical network 2 and configured to allow a measurement of current Di - through a measurement of voltage Du across the terminals of the shunt resistor 135 - and a measurement of voltage Du between the phase P2 and the neutral PI of the domestic electrical network 2 to which the control module 13 is electrically connected;

[0061] - the electrical coupling element 134 as described above. The element of The electrical coupling 134 is connected, in particular, to the communication unit 132 in order to allow its control based on received commands and / or transmitted parameters. In the context of the invention, the coupling element 134 takes the form of a relay placed on the neutral PI and / or on the phase P2 of the domestic electrical network 2 to which the control module 13 is connected.

[0062] With reference to [Fig. 3], the invention addresses an isolation method 5 implementing the photovoltaic system 1 described above. Such an isolation method 5 comprises:

[0063] - a reception step 51 by the control module 13 of a command electrical insulation;

[0064] - a configuration step 53 of the electrical coupling element 134 in its state open.

[0065] This advantageous configuration thus makes it possible to isolate the photovoltaic system 1 from the domestic electrical network 2 from a remote control, thus facilitating the use of the photovoltaic system 1 according to the needs of the dwelling 4.

[0066] According to a first exploitation, the electrical isolation method 5 is used to provide an anti-theft function for at least one photovoltaic system 1. To this end, the electrical isolation method 5 comprises:

[0067] - a locking step of the electrical coupling element 134 in its state open, so that it is no longer possible to connect the photovoltaic system 1 to the domestic electrical network 2. Advantageously, the coupling element 134 is configured to remain in its open state even in the absence power supply of control module 13;

[0068] - an unlocking step 55 consecutive to the receipt of a re command electrical connection 54 of the photovoltaic system 1 by the control module 13, the unlocking step 55 comprising a configuration step 53 of the electrical coupling element 134 in its closed state.

[0069] According to a second embodiment, the electrical isolation method 5 is used to provide a function for reducing electrical consumption during periods not suitable for the use of the photovoltaic system(s) 1 connected to the domestic electrical network 2. For this purpose, the electrical isolation method 5 includes a step of defining 56 first time slots within which the electrical coupling element 134 is configured in its closed state, and second time slots within which the electrical coupling element 134 is configured in its open state.The first time slots correspond to daytime hours at the location of the photovoltaic system 1, during which it is desirable and expected that the photovoltaic system 1 be connected to the domestic electrical network 2; and the second time slots correspond to nighttime hours during which it is not necessary for the photovoltaic system 1 to be connected to the domestic electrical network 2; .

[0070] The first and second time slots are defined and stored on the remote server, the remote server transmitting (i) the electrical isolation command at the beginning of the second time slots, (ii) the electrical reconnection command at the beginning of the first time slots. Alternatively, the control module 13 includes an internal clock, the first and second time slots being defined and stored on the control module 13, the control module 13 controlling the electrical coupling device 134 so as to electrically isolate the photovoltaic system 1 at the beginning of the second time slots, and to electrically couple the photovoltaic system 1 to the domestic electrical network 2 at the beginning of the first time slots.

[0071] According to a third embodiment, the electrical isolation method 5 is used to provide a remote restart function for the photovoltaic system(s) 1 connected to the domestic electrical network 2. To this end, the electrical isolation method 5 includes a restart step 58 for the module of the photovoltaic system 1, the restart step 58 comprising:

[0072] - the electrical isolation step 52;

[0073] - a timing step 57 following the isolation step 52; and

[0074] - a closing step of the electrical coupling element 134 carried out at the end of the timing step 57.

[0075] In summary, the invention relates to a programmed isolation method 5 of at least a photovoltaic system 1 configured to be able to be electrically connected to a domestic electrical network 2, the photovoltaic system 1 being connected to an electrical outlet 25 of an electrical circuit 24 located downstream of a main circuit breaker 22 so as to be able to inject into the domestic electrical network 2 electrical energy obtained by transformation of incident solar energy, the programmed isolation process 5 allowing the photovoltaic system 1 to be electrically disconnected remotely according to predetermined circumstances of use.

[0076] Of course, the invention is not limited to the examples just described, and many modifications can be made to these examples without departing from the scope of the invention. In particular, the various features, forms, variants, and embodiments of the invention can be combined with one another in various ways, provided they are not incompatible or mutually exclusive. In particular, all the variants and embodiments described above are combinable with each other.

Claims

Demands

1. Method (5) of programmed isolation of at least one photovoltaic system (1), each photovoltaic system (1) comprising: - a photovoltaic panel (11) configured to generate a continuous electrical output signal from solar energy; - an inverter (12) configured to transform the continuous electrical output signal generated by the photovoltaic panel (11) into an alternating electrical signal suitable for a domestic electrical network (2); - an electrical cable (14) one end of which is electrically connected to the inverter (12) and a second end (15) has an electrical connection device allowing the photovoltaic system (1) to be electrically coupled to the domestic electrical network (2); - a control module (13) electrically connected to the inverter (12) and the electrical connection device, the control module (13) comprising (i) an electrical coupling element (134) configured to selectively connect said at least one photovoltaic system (1) to the domestic electrical network (2), the electrical coupling element (134) being configured in a closed state and to disconnect said at least one photovoltaic system (1) from the domestic electrical network (2), the electrical coupling element (134) being configured in an open state, and (ii) means for communicating with a remote server; the method (5) comprising a step of receiving (51) by the control module (13) an electrical isolation command and a step of configuring (53) the electrical coupling element (134) in its open state; characterized in that the electrical coupling element (134) is configured to remain in its open state until the control module (13) receives an electrical reconnection command, the isolation method (5) comprising: - a subsequent unlocking step (55) following the receipt of an electrical reconnection command (54) from the photovoltaic system (1) by the control module (13), the unlocking step (55) comprising a configuration step (53) of the electrical coupling element (134) in its closed state; - a definition step (56) of initial time slots within which the electrical coupling element (134) is configured in its closed state, and second time slots within which the electrical coupling element (134) is configured in its open state.

2. Method (5) of isolation according to claim 1, wherein the communication step is of the type of wireless communication.

3. Method (5) of isolation according to claim 1, wherein the communication step is of the type of wired communication.

4. Method (5) of isolation according to any one of the preceding claims, wherein the first time slots and the second time slots are defined and recorded on the remote server, the remote server transmitting: - the electrical isolation command at the beginning of the second time slots; - the electrical reconnection command at the beginning of the first time slots.

5. Method (5) of isolation according to the preceding claim, wherein the control module (13) stage comprises an internal clock, the first time slots and the second time slots being defined and recorded on the control module (13), the control module (13) controlling the electrical coupling element (134) so ​​as to electrically isolate the photovoltaic system (1) at the beginning of the second time slots, and to electrically couple the photovoltaic system (1) to the domestic electrical network (2) at the beginning of the first time slots.

6. An electrical assembly comprising a domestic electrical network (2) and at least one photovoltaic system (1), each photovoltaic system (1) comprising: - a photovoltaic panel (11) configured to generate a direct current output electrical signal from solar energy; - an inverter (12) configured to convert the direct current output electrical signal generated by the photovoltaic panel (11) into an alternating current electrical signal suitable for the domestic electrical network (2); - an electrical cable (14) having one end electrically connected to the inverter (12) and a second end (15) comprising an electrical connection device for electrically coupling the photovoltaic system (1) to the domestic electrical network (2); - a control module (13) electrically connected to the inverter (12) and to the electrical connection device, the control module (13) comprising (i) an electrical coupling element (134) configured to selectively connect said at least one photovoltaic system (1) to the domestic electrical network (2), the coupling element (134) being configured in a closed state and, to decouple said at least one photovoltaic system (1) from the domestic electrical network (2), the coupling element (134) being configured in an open state, and (ii) means for communicating with a remote server, the control module (13) being configured to implement the isolation method (5) according to any one of the preceding claims.

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