METHOD AND DEVICE FOR MANAGING THE ELECTRICAL POWER CONSUMED BY A SMART CONSUMPTION DEVICE ASSOCIATED WITH AN ENERGY MANAGEMENT SYSTEM IN A BUILDING

Abstract

The present invention relates to a method and device for managing the electrical power consumed by an intelligent consumption device in a building comprising the intelligent consumption device and an energy manager. The steps, executed by the intelligent consumption device, are: - determination (E303) of the available electrical power before an interruption in the supply of electrical power to the building occurs, - use (E306), for a first predetermined period, of the maximum value of electrical power that the electricity meter can supply before a trip, - use (E310), for a second predetermined period, of electrical power lower than the maximum value of electrical power that the electricity meter can supply before a trip, - repetition of the steps (E303, E306, E310) of use and determination at the end of the second predetermined period.Figure to be published with the abbreviation: Fig. 3.

Description

Title of the invention: METHOD AND DEVICE FOR MANAGING THE ELECTRICAL POWER CONSUMED BY A SMART CONSUMPTION DEVICE ASSOCIATED WITH AN ENERGY MANAGER IN A BUILDING technical field

[0001] The present invention relates to a method and device for managing the electrical power consumed by an intelligent consumption device associated with an energy manager in a building. STATE OF PRIOR ART

[0002] Conventionally, the electrical power consumed in a building comes largely from an electrical power supply network. Electrical energy from the power supply network is delivered to the building via a meter that measures the power delivered by the power supply network to the building. When the power exceeds the building's capacity, it causes an interruption in the electrical power supply to the building. This interruption is called a circuit breaker trip.

[0003] New electrical energy-consuming devices appear in buildings; these devices are subsequently called intelligent consumption devices.

[0004] Intelligent consumption devices are capable of increasing or decreasing their electrical power consumption according to the available electrical power before a circuit breaker occurs.

[0005] These intelligent consumption devices are, for example, electric vehicle charging stations or air conditioning systems or heat pumps.

[0006] Energy management systems exist for electric heating or hot water heating (boilers, heat pumps, pellet stoves, etc.). Electric energy management systems combine several functions to optimize a home's energy consumption. They ensure a constant and comfortable temperature according to the time of day and the different areas of the dwelling, thanks to programming and load shedding functions. Energy management systems prove to be comprehensive and efficient devices for controlling heating or air conditioning systems while saving energy.

[0007] Energy managers thus control the operation of various electrical devices, ensuring that the total electrical power consumed is less than the electrical power planned for the building, and take into account the different hourly tariffs in order to reduce the financial cost of the billing made by the operator of the electrical energy supply network.

[0008] When a building has an intelligent consumption device and an energy manager, problems arise.

[0009] For example, if the intelligent consumption device is informed that the total electrical power consumed by the building is less than the electrical power intended for the building, it can increase the electrical power delivered to the vehicle. The energy manager, seeing that the total power consumed by the building is almost equal to the electrical power intended for the building, cannot trigger the operation of electrical energy-consuming devices such as building heating or cooling systems, a hot water tank, or a heat pump.

[0010] This situation could be resolved by establishing a communication link between the smart consumption device and the energy manager, but the communication protocols used by smart consumption devices are varied and even proprietary. Therefore, this solution cannot be adopted for large-scale implementation.

[0011] Thus, the occupant of the building must make a choice between charging his electric vehicle with the electrical power of the building and not having adequate heating from the building or charging his electric vehicle with charging stations other than that of the building.

[0012] This situation is not optimal for the satisfaction and well-being of the building's occupant. Description of the invention

[0013] The invention aims to guarantee the comfort of an occupant of a building comprising an intelligent consumption device and an energy manager as well as a good distribution of the electrical power consumed.

[0014] According to a first aspect of the invention, the invention relates to a method for managing the electrical power consumed by a smart energy consumption device in a building comprising the smart energy consumption device and an energy manager, the electrical power being supplied at least by an electrical power supply network via a meter that measures the electrical power delivered by the electrical power supply network to the building and when the electrical power is greater than that provided for the building, causes an interruption in the supply of electrical energy to the building, the intelligent consumption device being capable of reducing its electrical power consumption or increasing its electrical power consumption depending on the available electrical power before an interruption in the supply of electrical energy to the building occurs, the energy manager being capable of controlling consumption devices other than the intelligent consumption device depending on the available electrical power before an interruption in the supply of electrical energy to the building occurs, characterized in that the method comprises the steps, executed by the intelligent consumption device, of:

[0015] - determination of the available electrical power before an interruption of the The supply of electrical energy to the building does not appear,

[0016] - use, for a first predetermined period, of the maximum value of electrical power that the electrical meter can supply before a tripping,

[0017] - use, for a second predetermined period, of electrical power lower than the maximum electrical power value that the electricity meter can supply before a circuit breaker trips,

[0018] - reiteration of the usage and determination steps at the end of the second predetermined period.

[0019] Correspondingly, the invention relates to an intelligent consumption device in a building comprising the intelligent consumption device and an energy manager, the electrical power being at least supplied by an electrical power supply network via a meter which measures the electrical power delivered by the electrical power supply network to the building and when the electrical power is greater than that provided for the building, causes an interruption of the electrical power supply to the building, the intelligent consumption device being capable of reducing its electrical power consumption or increasing its electrical power consumption according to the available electrical power before an interruption of the electrical power supply to the building occurs,the energy manager being able to control consumption devices different from the intelligent consumption device depending on the available electrical power before an interruption of the electrical energy supply to the building occurs, characterized in that the intelligent consumption device comprises: ,

[0020] - means for determining the available electrical power before a interruption of the electrical power supply to the building does not appear,

[0021] - means of using, for a first predetermined period, the value maximum electrical power that the electricity meter can supply before a circuit breaker trips

[0022] - means of using, for a second predetermined period, a electrical power lower than the maximum electrical power value that the electricity meter can supply before a circuit breaker trips.

[0023] - means for reactivating the means of use and determination at the end of the second predetermined period.

[0024] Thus, the present invention allows the energy manager to control the operation of consumption devices and to prioritize these consumption devices with respect to the intelligent consumption device. These consumption devices are, for example, heating, air conditioning, domestic hot water, or a household appliance.

[0025] According to another aspect of the invention, the smart consumption device is a charging station for an electric vehicle.

[0026] Thus, user comfort is less affected by excessive consumption of the intelligent consumption device which can prevent the start-up of consumption devices controlled by the energy manager.

[0027] According to another aspect of the invention, the electrical energy used during the first period of time is further dependent on the charging characteristics of the vehicle.

[0028] Thus, it is possible to charge in the most efficient way possible, depending on the maximum power absorbed by the vehicle while taking into account the maximum value of electrical power that the electrical meter can supply before a tripping.

[0029] According to another aspect of the invention, the electrical energy used during the second time period is further dependent on the vehicle's charging characteristics.

[0030] Thus, it is possible to charge the vehicle with a low power which guarantees a long lifespan of the charging station and / or the vehicle.

[0031] According to another aspect of the invention, the use, during the second predetermined period, of an electrical power lower than the electrical power that the electrical meter can supply before a tripping is carried out as long as a request to prioritize the charging of the vehicle is not detected.

[0032] Thus, the owner of the electric vehicle can charge his vehicle in a priority manner if he needs to do so quickly. Brief description of the drawings

[0033] The features of the invention mentioned above, as well as others, will become clearer upon reading the following description of an example of implementation, the said description being made in relation to the attached drawings, among which:

[0034] [Fig. 1] represents an electrical installation in a building in which the present invention is implemented;

[0035] [Fig.2] represents a block diagram of an intelligent consumption device according to the present invention;

[0036] [Fig.3] represents an example of an algorithm executed by the intelligent consumption device according to the present invention;

[0037] [Fig.4a] represents an example of a timing diagram of the electrical power consumed by an intelligent consumption device.

[0038] [Fig.4b] represents an example of a timing diagram of the electrical power consumed by an energy manager according to the present invention.

[0039] DETAILED DESCRIPTION OF IMPROVEMENTS

[0040] Fig. 1 represents an electrical installation in a building in which the present invention is implemented.

[0041] The building Bat includes an electricity meter Cmp, an intelligent consumption device Dint, an energy manager Ges and a plurality of consumption devices Disl, Dis2 and Dis3.

[0042] The Cmp electricity meter measures the electrical power delivered by a Res electrical supply network to the building and, when the measured electrical power exceeds the building's capacity, triggers a circuit breaker trip. The trip is not immediate; it occurs after a few seconds or tens of seconds following a measurement of overconsumption.

[0043] The intelligent consumption device Dint is for example a charging station for an electric vehicle Veh or an air conditioning system or a heat pump.

[0044] The energy manager Ges controls the operation of the consumption devices Disl, Dis2 and Dis3 by ensuring that the electrical power delivered by the electric meter Cmp is less than the electrical power planned for the building and takes into account the different hourly tariffs in order to reduce the financial cost of the billing made by the operator of the electricity supply network.

[0045] The energy manager Ges is associated with means for obtaining the electrical power delivered by the electric meter Cmp.

[0046] The intelligent consumption device Dint is associated with means for obtaining the electrical power delivered by the electric meter Cmp.

[0047] The means of obtaining the electrical power delivered by the electric meter Cmp which are associated with the intelligent consumption device Dint are for example a current sensor Senl.

[0048] The means of obtaining the electrical power delivered by the electric meter Cmp which are associated with the energy manager Ges are for example a current sensor Sen2.

[0049] Since the value of the electrical voltage in the building is known, a measurement of electrical power is equivalent to a measurement of current.

[0050] It should be noted here that other sources of electrical energy supply not shown in [Fig.1] such as photovoltaic panels, wind turbines or any renewable electrical energy supply system can provide electrical energy to the building.

[0051] Fig. 2 represents a block diagram of an intelligent consumption device according to the present invention.

[0052] The Dint intelligent consumption device is adapted to perform, from one or more software modules, the steps of the algorithm as described with reference to [Fig.3],

[0053] The intelligent consumption device Dint includes a communication bus 201 to which are connected a processor 200, a non-volatile memory 202, a RAM 203, optionally a human-machine interface HMI 204, a control interface 206 allowing control of the electrical power delivered to the vehicle Veh in the case where the intelligent consumption device Dint is a charging station, and a sensor interface 208 to which the Sens 1 sensor is connected.

[0054] The human-machine interface 204 allows the occupant to indicate to the intelligent consumption device Dint whether it wants the electrical energy consumption of the intelligent consumption device Dint to have priority.

[0055] The non-volatile memory 202 stores the software module(s) implementing the invention, as well as the data enabling the implementation of the algorithm as described with reference to [Fig.3].

[0056] More generally, the programs according to the present invention are stored in a storage means. This storage means is readable by the microprocessor 200. This storage means may or may not be integrated into the intelligent consumer device Dint, and may be removable.

[0057] When the Dint smart consumption device is switched on, the software module(s) according to the present invention is or are transferred into the RAM 203 which then contains the executable code according to the present invention as well as the data necessary for the implementation of the invention.

[0058] Thus, all or part of the algorithm and steps described herein can be implemented in software form by executing a set of instructions by a programmable machine, such as a DSP (Digital Signal Processor) or a microcontroller or processor. All or part of the algorithm and steps described herein can also be implemented in hardware form by a machine or component (chip), such as an FPGA (Field-Programmable Gate Array) or an ASIC (Application-Specific Integrated Circuit). Thus, the Dint smart consumer device includes electronic circuitry adapted and configured to implement the behaviors, algorithms, and steps described herein.

[0059] Fig. 3 represents an example of an algorithm executed by the smart consumption device according to the present invention.

[0060] The present algorithm is described in an example where the intelligent consumption device Dint is a charging station for an electric vehicle.

[0061] At step E300, the intelligent consumption device Dint starts the execution of this algorithm.

[0062] At step E301, the intelligent consumption device Dint checks whether electrical energy consumption by the intelligent consumption device Dint is requested. The energy consumption request is detected, for example, by an action on the HMI interface 204 or by the detection of the connection of an electric vehicle Veh to the intelligent consumption device Dint.

[0063] If yes, the Dint smart consumption device proceeds to step E302. If no, the Dint smart consumption device returns to step E301. In step E302, the Dint smart consumption device activates a first timer or TPC counter for a first predetermined duration. The first predetermined duration is, for example, between 40 and 80 minutes, more precisely around 60 minutes.

[0064] At step E303, the intelligent consumption device Dint checks whether the intelligent consumption device is delivering electrical energy to the vehicle Veh.

[0065] If yes, the intelligent consumption device Dint proceeds to step E304. If no, the intelligent consumption device Dint returns to step E301.

[0066] At step E304, the intelligent consumption device Dint controls the charging of the vehicle Veh to the maximum value of electrical power that the meter Cmp can supply before a tripping and respecting the charging characteristics of the vehicle Veh.

[0067] At step E305, the intelligent consumption device Dint checks whether a request has been made to prioritize charging the vehicle Veh. The request is detected, for example, by an action on the HMI interface 204.

[0068] If yes, the intelligent consumption device Dint returns to step E303. If no, the intelligent consumption device Dint proceeds to step E306.

[0069] At step E306, the intelligent consumption device Dint checks whether the first timer or counter has reached the first predetermined duration or whether the charging of the vehicle Veh is complete.

[0070] If the first timer or counter has reached the first predetermined duration or if the charging of the vehicle Veh is complete, the intelligent consumption device Dint proceeds to step E307. Otherwise, the intelligent consumption device Dint returns to step E303.

[0071] At step E307, the Dint intelligent consumption device activates a second TFC timer or counter for a second predetermined duration. The second predetermined duration is, for example, between 10 and 15 minutes, more precisely 13 minutes.

[0072] At step E308, the intelligent consumption device Dint checks whether the intelligent consumption device is delivering electrical energy to the vehicle Veh.

[0073] If yes, the intelligent consumption device Dint proceeds to step E309. If no, the intelligent consumption device Dint returns to step E308.

[0074] At step E309, the intelligent consumption device Dint controls the charging of the vehicle Veh to the minimum value of electrical power respecting the charging characteristics of the vehicle Veh.

[0075] At step E310, the intelligent consumption device Dint checks whether the second timer or counter has reached the second predetermined duration.

[0076] If yes, the Dint intelligent consumption device returns to step E303. If no, the Dint intelligent consumption device returns to step E308.

[0077] Figs. 4 represent an example of a timing diagram of the distribution of electrical power consumed by an intelligent consumption device and an energy manager according to the present invention.

[0078] Fig. 4a represents an example of a timing diagram of the electrical power consumed by an intelligent consumption device.

[0079] From time T1 until time T2, the intelligent consumption device consumes the maximum value of electrical power that the electric meter can supply before a tripping, for example consumes 7KVA.

[0080] The first predetermined duration is thus equal to T2-T1.

[0081] During this first predetermined period, the intelligent consumption device periodically determines the maximum power that the electric meter before a tripping so as to be able to take into account the electrical consumption of devices other than the consumption devices Disl, Dis2 and Dis3.

[0082] From time T2 to time T3, the intelligent consumption device consumes less than the maximum electrical power that the electricity meter can supply before a trip, for example, 2 kVA. This value depends on the charging characteristics of the vehicle Veh.

[0083] The second predetermined duration is thus equal to T3-T2.

[0084] During this second predetermined period, the intelligent consumption device periodically determines the maximum power that the electric meter can supply before a tripping so as to be able to take into account the electrical consumption of devices other than the consumption devices Dis1, Dis2 and Dis3.

[0085] Fig. 4b represents an example of a timing diagram of the electrical power consumed by an energy manager according to the present invention.

[0086] During the first period of time, the energy manager Ges cannot control the operation of the consumption devices Disl to Dis3 because the intelligent consumption device consumes the maximum value of electrical power that the electric meter can supply before a tripping.

[0087] During the second time period, the energy manager Ges detects the availability of at least part of the electrical power that the electric meter can supply before a tripping and commands the operation of at least one of the consumption devices Disl to Dis3.

[0088] From time T3, the intelligent consumption device obtains the electrical energy consumption still available (lower than that between times T1 and T2) and consumes the remaining part of the electrical energy that the electrical meter can supply before a trip while respecting the vehicle's charging characteristics.

[0089] Of course, the present invention is by no means limited to the embodiments described here, but on the contrary encompasses any variant within the reach of a person skilled in the art.

Claims

Demands

1. A method for managing the electrical power consumed by an intelligent consumption device in a building comprising the intelligent consumption device and an energy manager, the electrical power being at least supplied by an electrical power supply network via a meter that measures the electrical power delivered by the electrical power supply network to the building and when the electrical power is greater than that intended for the building, causes an interruption in the supply of electrical power to the building, the intelligent consumption device being capable of reducing its electrical power consumption or increasing its electrical power consumption according to the available electrical power before an interruption in the supply of electrical power to the building occurs,the energy manager being capable of controlling consumption devices different from the intelligent consumption device depending on the electrical power available before an interruption of the electrical power supply to the building occurs, characterized in that the method comprises the steps, executed by the intelligent consumption device, of: - determination (E303) of the electrical power available before an interruption of the electrical power supply to the building occurs, - use (E306), for a first predetermined period, of the maximum value of electrical power that the electrical meter can supply before a trip, - use (E310), for a second predetermined period, of electrical power lower than the maximum value of electrical power that the electrical meter can supply before a trip, - repetition of the steps (E303, E306,E310) of use and determination at the end of the second predetermined period.

2. A method according to claim 1, characterized in that the intelligent consumption device is a charging station for an electric vehicle.

3. Method according to claim 2, characterized in that the electrical energy used during the first period of time is further a function of the vehicle's charging characteristics.

4. A method according to claim 2 or 3, characterized in that the electrical energy used during the second time period is a function of the vehicle's charging characteristics.

5. A method according to any one of claims 2 to 4, characterized in that the use, during the second predetermined duration, of an electrical power lower than the electrical power that the electrical meter can supply before a tripping is carried out as long as a request to prioritize the charging of the vehicle is not detected.

6. A smart consumption device in a building comprising the smart consumption device and an energy manager, the electrical power being at least supplied by an electrical power supply network via a meter that measures the electrical power delivered by the electrical power supply network to the building and when the electrical power is greater than that provided for the building, causes an interruption in the supply of electrical power to the building, the smart consumption device being capable of reducing its electrical power consumption or increasing its electrical power consumption according to the available electrical power before an interruption in the supply of electrical power to the building occurs,the energy manager being capable of controlling consumption devices different from the intelligent consumption device depending on the electrical power available before an interruption of the electrical power supply to the building occurs, characterized in that the intelligent consumption device comprises: - means of determining the electrical power available before an interruption of the electrical power supply to the building occurs, - means of using, for a first predetermined period, the maximum value of electrical power that the electrical meter can supply before a trip, - means of using, for a second predetermined period, an electrical power lower than the maximum value of, electrical power that the electricity meter can supply before a circuit breaker trips - means of reactivating the means of use and determination at the end of the second predetermined period.

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