Method for validating an electric energy system

Abstract

The invention relates to a method for validating an electric energy system (1) in a building, said method comprising a step of predefining an interconnection pattern of the electric energy system. The interconnection pattern describes an arrangement of a plurality of components of the electric energy system (1) and their relative position and connections. In a further step, the electric energy system (1) is put into a first operating state by controlling at least one component. At least one measured value is recorded in the first operating state. A plausibility check is carried out depending on the at least one measured value and the predefined interconnection pattern. A signal is output depending on the result of the plausibility check.

Description

[0001] Viessmann Climate Solutions SE 1

[0002] Procedure for validating an electrical energy system

[0003] The present invention relates to a method for validating an electrical energy system in a building and to an electrical system. In particular, an electrical wiring pattern of the electrical energy system is to be verified.

[0004] German patent application No. DE 10 2018 206 214 describes a method for operating an energy supply system in a building. The system comprises a control device that receives measured values ​​and regulates and / or controls the operating state of the system. Such a control device is also referred to as an EMS ("Energy Management System") or HEMS ("Home Energy Management System").

[0005] When a new electrical power system is installed in a building or changes are made to an existing power system, an electrical wiring pattern for the power system must be configured in a power system control device during (re-)commissioning of the power system. An incomplete or faulty wiring pattern can lead to errors during operation of the electrical power system. Therefore, the wiring pattern usually has to be verified, which in practice can be very time-consuming and sometimes error-prone. Therefore, there is a need for an automated or guided validation of an electrical power system.

[0006] The present invention is based on the object of overcoming the problems known in the prior art and of providing a method for validating an electrical power system that is improved compared to the prior art. Furthermore, an electrical power system with a control device (HEMS) that is improved compared to the prior art is to be provided.

[0007] The control device can detect, regulate, and / or control operating states or operating parameters of the electrical energy system or individual components of the energy system. Depending on its function, the control device can also be considered a closed-loop control device. The control device is also referred to below as "HEMS." According to the invention, the object is achieved by a method for validating an electrical energy system according to claim 1 and by an electrical energy system according to claim 9. Preferred embodiments of the present invention are the subject of the dependent claims, the appended drawings, and the following description of exemplary embodiments.

[0008] One goal of the method is to automatically determine the positioning of components in the electrical power system or in the electrical wiring pattern of the power system using optimized test procedures. Furthermore, any deviation between an actually installed wiring pattern and a specified or user-selected wiring pattern is to be detected.

[0009] A wiring pattern describes the arrangement of various components of an electrical power system, as well as their relative positions and connections. Graphically, the wiring pattern can be represented schematically using corresponding symbols for components and lines for connections.

[0010] Examples of energy system components include electrical generators, such as a PV system and / or a fuel cell, that provide electrical energy. A PV system or fuel cell typically includes a (controllable) inverter to supply alternating current to the building's electrical grid.

[0011] Furthermore, the energy system can have controllable consumers, such as a heat pump, an electric heating device and / or an electric vehicle or its charging station, which is also referred to as a wall box. The electric heating device can, for example, be a heating element of the heat pump for heating water. The heating element can support the heat pump, in particular at very low outside temperatures. The term “controllable consumer” also includes consumers that are merely controllable. An electrical energy storage device that is stationary in a building and which has, for example, a battery or an accumulator, can also be regarded as a controllable consumer, since the energy storage device consumes energy when charging and parameters such as the time, period, charging power, etc. can be determined by the HEMS control device. In addition, the energy storage device can also be regarded as a controllable generator.operated, as it can provide energy stored in particular depending on control or regulation signals from the HEMS.

[0012] In addition, an electrical energy system includes a multitude of non-controllable loads, such as electrical household appliances, electric lights, and the like. The operating state of a non-controllable load cannot be directly influenced by the HEMS.

[0013] The electrical wiring for electrical current or voltage can be collectively referred to as the house electrical system. Consumers are connected, for example, via sockets that are connected to the house electrical system.

[0014] The electrical energy system also includes a grid connection point, through which electrical energy can be drawn from a public grid or locally generated energy can be fed into the public grid. The relative position of the grid connection point with respect to the other components is described by the interconnection pattern.

[0015] In addition, the electrical energy system comprises at least one measuring device, in particular an electrical electricity meter for measuring electrical current or energy consumption, power input, energy generation or power output. For example, electricity meters can be arranged at the grid connection point and / or at other nodes of the electrical energy system. In particular, for example, the consumption of a controllable consumer and / or the electricity generation of a local energy generator (e.g. PV system) can each be recorded by separate meters. In preferred embodiments, the energy system can have a plurality of measuring devices. In the following description, the terms measuring device, electricity meter and meter can be used synonymously.The central control device (HEMS) serves to regulate and / or control the energy system, in particular the at least one controllable consumer and / or the at least one energy storage device and / or the at least one generator.

[0016] Furthermore, the control device records measured values ​​from the electricity meters. The control device can also have a human-machine interface through which a user can enter inputs and read outputs. For this purpose, the control device can have a display device and an input device. Alternatively or additionally, the control device can be connected to a network so that inputs and / or outputs can be made, e.g., via an app or a browser or the like on a user's end device (e.g., laptop or smartphone or the like).

[0017] The following describes individual process steps of the method according to the invention, which can be carried out individually, sequentially, or simultaneously. Not all steps are essential for achieving the object of the invention, so individual steps can also be omitted.

[0018] In a first step, a wiring pattern for the electrical power system is specified. The wiring pattern can be specified, for example, by the user.

[0019] This specification can preferably be done automatically. For example, the HEMS can specify a wiring pattern based on automatically detected components or issue a suggestion to the user, who can either accept or reject the suggestion.

[0020] According to a preferred embodiment, the wiring pattern can be specified interactively with the user. For this purpose, a human-machine interface is first started, which may have a graphical user interface, e.g., executed via a browser or an app on a user's terminal device, or via a display device of the HEMS. Subsequently, a request can be issued to the user to specify the wiring pattern using one or more inputs. The input can be made, for example, by selecting from a list of possible wiring patterns and / or interactively and preferably iteratively by answering a series of questions.

[0021] In particular, the HEMS can issue a series of queries to the user, allowing the user to enter a series of inputs. For example, the presence of specific components and / or their number and / or their relative arrangement to other components can be queried individually in sequence. Depending on the user's input, a limited selection of possible interconnection patterns can then be suggested, or a single suitable interconnection pattern can be determined. The series of queries can be designed iteratively, so that each individual query can influence a subsequent query or selection option.

[0022] The HEMS can then determine and suggest or specify a suitable wiring pattern depending on the user's input.

[0023] The user can enter inputs, for example, by selecting individual components from displayed lists or graphical interfaces. Furthermore, the user can select from a variety of predefined wiring patterns. The HEMS can make a preselection based on previously identified components to facilitate the user's selection. The HEMS can display a variety of possible wiring patterns.

[0024] The automatic detection of components can occur by detecting at least one signal from at least one component of the electrical power system. The signal can, for example, be transmitted wirelessly from the component and received by the HEMS. Alternatively, the signal can also be transmitted via a wired connection. For example, the establishment of a plug connection between a control line of a component and the HEMS can be automatically detected. The HEMS can detect the at least one component, preferably based on the detected signal. In particular, the HEMS detects a design and / or device type of the component. Furthermore, an operating state of the component can also be detected in this process.

[0025] Validating the electrical energy system comprises a step of placing the electrical energy system into a first operating state by controlling at least one first component. The HEMS then records at least one measured value in the first operating state. The measured value can, in particular, be generated by an electricity meter and transmitted to the HEMS. The HEMS then performs a plausibility check based on the at least one measured value and the specified wiring pattern. During the plausibility check, it is verified whether the recorded measured value is plausible with the specified wiring pattern.

[0026] Controlling a component can preferably involve causing a predetermined power consumption or power output by the component. This set power consumption or power output can be detected, for example, by a corresponding change in a measured value on one of the measuring devices and compared with the predetermined value. This can be used to determine, among other things, information about the relative position of the component in comparison to the measuring device and in comparison to other components. Furthermore, the correct functioning of the component and its control can be validated.

[0027] Depending on the result of the plausibility check, the HEMS issues a signal. This signal can be a message, for example, displayed to the user, via the human-machine interface. The message can indicate whether the wiring pattern is plausible or not. The message can therefore be either a success message or an error message.

[0028] According to a preferred embodiment, the step of outputting the signal comprises outputting a message to the user with a suggestion for an alternative wiring pattern depending on the result of the plausibility check, wherein the alternative wiring pattern describes a different arrangement of the plurality of components of the electrical energy system and their relative position and connections.

[0029] In particular, if the plausibility check reveals that the specified wiring pattern is not plausible with the recorded measured value, a suggestion for an alternative, plausible wiring pattern can be issued. The user can then accept the suggestion by entering the appropriate information. A further validation can then preferably be performed.

[0030] The signal can be output in various ways. In particular, the signal can be transmitted in the form of a message to a terminal device of a user and / or operator of the energy system. Additionally or alternatively, the signal can be displayed as an indication on a display device on the HEMS or in the vicinity of the HEMS. Furthermore, additionally or alternatively, the signal can be a control signal or regulation signal that the HEMS can output to a component of the energy system, in particular to perform a control intervention and / or to change an operating state of the energy system.

[0031] Preferably, the output signal can include an error message to a user and / or operator of the energy system. In particular, the error message can be output to a mobile device of the user and / or operator. The error message can indicate, for example, that validation has shown that the specified wiring pattern is not plausible with the recorded measured values.

[0032] The validation may comprise a further step in which the electrical energy system is placed into a second operating state by controlling the first component and / or by controlling a second component, wherein at least one further measured value is recorded in the second operating state.

[0033] The plausibility check can be performed accordingly based on the first measured value in the first operating state and based on the second measured value in the second operating state. The plausibility of the specified wiring pattern can thus be checked even more precisely, especially if multiple wiring patterns are plausible using only the measured value from the first operating state. As a result, the number of possible plausible wiring patterns can be reduced.

[0034] A preferred electrical energy system comprises a controllable load as the first component and a corresponding electricity meter for measuring consumption of the controllable load. Accordingly, the HEMS can control the first component by transmitting a power take-off command to the controllable load. The power take-off command can specify a power take-off (or power consumption of the load) equal to or greater than zero. A power take-off command equal to zero can also be referred to as a shutdown command.

[0035] According to a preferred embodiment, the at least one measured value can be detected by receiving the measured consumption of the controllable consumer from the electricity meter and the plausibility check can be carried out by comparing the measured consumption with the transmitted power consumption command.

[0036] A preferred electrical energy system comprises a controllable electrical energy storage device and / or generator as a first or second component and a corresponding electricity meter for measuring an output of electrical power from the energy storage device or generator.

[0037] According to a preferred embodiment, the HEMS can control the first component by transmitting a power output command to the energy storage device and / or generator. The HEMS records the at least one measured value by receiving the measured output of the energy storage device and / or generator from the electricity meter and performs the plausibility check by comparing the measured output with the transmitted power output command.

[0038] In a preferred method, the HEMS records a first measured value from a first electricity meter at the grid connection point (NAP), via which electrical energy can be drawn from a public power grid and / or fed into the public power grid. Furthermore, the HEMS can record at least one second measured value from at least one second electricity meter. The at least one second electricity meter measures, for example, a consumption of a controllable consumer, and / or a power output of an energy storage device, and / or a power output of a generator.

[0039] In addition, the HEMS can determine the consumption of non-controllable devices based on the difference between the first measured value and the second measured value. The plausibility check can be performed accordingly based on the first measured value, the second measured value, and the specified wiring pattern.

[0040] According to a preferred embodiment, the method comprises a step of transmitting data from the HEMS to a cloud or a server. The cloud or server can be located geographically remote from the building with the energy system. The data can be stored in the cloud or in a storage device of the server, for example, to be used for evaluation. The cloud or server can evaluate the data sets, in particular to perform the plausibility check.

[0041] Depending on the results of the calculations, a signal can be output via the cloud or the server, for example, to the mobile device of the user or energy system operator. The mobile device can receive the signal, in particular, via an internet connection.

[0042] The electrical energy system may further comprise at least one renewable energy source, such as a photovoltaic (PV) system or a wind turbine, configured to supply energy to the (controllable and non-controllable) loads and the energy storage device. A photovoltaic system typically has an inverter to convert the direct current generated by the PV system into alternating current. The inverter may, for example, be controlled by the HEMS. Furthermore, the PV system may have a separate electricity meter to measure the energy generated by the PV system. In particular, a portion of the generated energy may be used to charge the energy storage device. Furthermore, energy from the PV system may be fed into the public electricity grid via the grid connection point. The fed-in energy may preferably be measured by a meter at the grid connection point to calculate the remuneration.

[0043] The HEMS is preferably configured to perform some or all of the method steps of the method according to the invention described here.

[0044] BRIEF DESCRIPTION OF THE CHARACTERS

[0045] Further advantageous embodiments are described in more detail below with reference to an embodiment shown in the drawings, to which the invention is not limited, however.

[0046] They show schematically:

[0047] Figure 1 shows an electrical energy system in a building according to an embodiment of the invention.

[0048] Figure 2 shows three example wiring patterns A, B and C.

[0049] Figure 3 shows an electrical energy system in a building according to wiring pattern B.

[0050] DETAILED DESCRIPTION OF THE INVENTION USING EXEMPLARY EMBODIMENTS

[0051] In the following description of a preferred embodiment of the present invention, like reference numerals designate like or comparable components.

[0052] Fig. 1 shows a schematic representation of an embodiment of an electrical energy system 1 according to the invention in a building. The building can be, in particular, a residential building or an office building.

[0053] The energy system 1 shown in Fig. 1 comprises a photovoltaic system PV (hereinafter also abbreviated as PV system), which converts radiant energy from the sun S into electrical energy. Instead of a PV system or in addition to the PV system, the energy system 1 can use other renewable energy sources, such as a wind turbine and / or a fuel cell.

[0054] An inverter (WR) converts the direct current generated by the PV system into alternating current and supplies it to the building's internal network (4). The network (4) can supply electrical energy to a variety of non-controllable loads (HH), a heat pump (WP) as a controllable load, a charging station or wallbox (L) for an electric vehicle (EV) as a controllable load, and an energy storage unit (BAT) as a controllable load.

[0055] The solid lines here symbolize the power lines of the building's network 4. Dotted lines symbolize communication lines 5 for data traffic, particularly between the consumers or producers and the HEMS, which serves as a control or regulating device. For example, the communication lines 5 transmit control signals, regulating signals, and / or measurement signals. The signals are used, for example, to acquire measured values ​​and / or for controlling or regulating and / or for data exchange with a server 2 via a network, e.g., the Internet (WWW), or with a cloud.

[0056] The building's domestic network 4 is connected to a public power grid 3, operated by an energy supplier or grid operator, via a grid connection point (NPP). An electricity meter Z measures the energy consumption (power input) drawn by the domestic network 4 from the public grid 3, as well as the amount of energy (or power produced integrated over time) fed into the public grid 3 by the energy system 1.

[0057] The electricity meter Z can be a smart electricity meter that can be connected to the Internet or an intranet. The control device HEMS of the energy system 1 can record measured values ​​from the electricity meter Z via the communication lines 5. Furthermore, the energy system 1 can have other meters not shown in Fig. 1, as shown, for example, in Fig. 2. The energy storage device BAT serves to store electrical energy and can be made up of a plurality of batteries or accumulators. The energy storage device BAT comprises an inverter (not shown) that converts alternating current from the building grid 4 into direct current for charging the energy storage device BAT. Furthermore, the inverter can convert direct current from the energy storage device BAT into alternating current for the building grid 4.

[0058] To charge the energy storage unit BAT with energy from the PV system, a direct and separate power line can also be provided between the PV system and the energy storage unit BAT, eliminating the need to convert between direct current and alternating current when charging the energy storage unit BAT. Such a direct DC line can also be provided between the energy storage unit BAT and the charging station L.

[0059] Another component of energy system 1 is another controllable consumer, represented here as an example by a heat pump HP. The operation of the heat pump HP can be regulated or controlled by the HEMS. Energy system 1 can also include other controllable consumers. For example, an electric heating device can be controlled by the HEMS. The electric heating device can, in particular, be a heating element of the heat pump HP.

[0060] Furthermore, a ventilation system and / or an air conditioning system and / or a night storage heater can be provided as controllable consumers. These are not shown in Fig. 1. The charging station L and the energy storage unit BAT can also be operated as controllable consumers.

[0061] A large number of non-controllable consumers HH are connected to the building's domestic network 4. The non-controllable consumers HH are, for example, household appliances and / or lighting devices or other consumers that can be switched on and off by a user or occupant of the building. In an office building, non-controllable consumers HH can, for example, include a large number of computers, printers and / or copiers. The HEMS is connected via communication lines 5 to the inverter WR of the PV system, to the heat pump WP, to the energy storage unit BAT, to the electricity meter Z at the grid connection point NAP, to the charging station L and, via the Internet WWW, to the server 2. Instead of wired communication lines 5, wireless communication or communication via fiber optic cables can also be provided (in part) between the HEMS and the aforementioned components of the energy system 1.Furthermore, the energy system 1 can have additional electricity meters that measure, for example, the energy generated by the PV system and / or the energy consumed by the non-controllable consumers HH.

[0062] Fig. 2 shows three exemplary wiring patterns A, B, and C, each of which includes two electricity meters ZI, Z2, a heat pump HP as a controllable consumer, a PV system as an energy generator and / or an energy storage unit BAT as a controllable consumer or controllable energy source, and a plurality of non-controllable consumers HH. An internal house network 4 is connected to the public electricity grid 3 via a grid connection point NAP. The operating states of the heat pump HP as well as the PV system and / or the energy storage unit BAT can be controlled or regulated by the HEMS (not shown).

[0063] The first electricity meter ZI can measure the consumption of electrical energy from the public power grid 3 or the feed-in of electrical energy into the public power grid 3. Connection patterns B and C each have a third electricity meter Z3 for the PV system or the energy storage system BAT, which measures the fed-in energy.

[0064] When commissioning an electrical energy system 1, the wiring pattern must be validated. It is known that the energy system comprises a heat pump HP, an energy storage unit BAT, and a plurality of non-controllable loads HH. This information can be acquired, for example, by querying a user who can make corresponding inputs. Alternatively, the HEMS can automatically detect at least the presence of the heat pump HP, the energy storage unit BAT, and the electricity meter Z using appropriate signals. If the HEMS detects three electricity meters ZI, Z2, Z3, wiring pattern A can be excluded. Thus, only a distinction must be made between wiring patterns B and C. To validate the arrangement of the components, a first component can now be controlled. For example, the HEMS can issue a power output command to the energy storage unit BAT.In both connection patterns B and C, the HEMS records a signal from meter Z3. However, the signals from meters ZI and Z2 depend on the operating state of the heat pump HP. To distinguish between connection patterns B and C, the HEMS can issue a power consumption command to the heat pump HP in a next step.

[0065] By comparing the measured values ​​of meters ZI, Z2, and Z3, a distinction can be made between connection patterns B and C. Furthermore, consumption of the non-controllable consumers HH can be calculated and compared with a specified range to validate plausibility.

[0066] In a further step, the heat pump HP can be controlled by the HEMS by issuing a power consumption command. As a result, either meter ZI (wiring pattern A or C) or meter Z2 (wiring pattern B) shows a power consumption increased by several kilowatts, corresponding to the power consumed by the heat pump HP. If only meter Z2 shows the power consumption of the heat pump, wiring patterns A and C can be ruled out.

[0067] Fig. 3 shows a modification of Fig. 1 according to the wiring pattern B with three meters ZI, Z2, Z3, a heat pump WP, an energy storage device BAT and a plurality of non-controllable consumers.

[0068] Preferably, the HEMS can perform automatic validation of the connected components of the energy system 1. The HEMS can be implemented as part of one of the connected components, as a separate functional unit, and / or in the cloud or in the server 2.

[0069] Before or during the commissioning of the energy system 1 or when a change and re-commissioning of the energy system 1 is carried out, a user can make an input to specify the wiring pattern in a process step or the wiring pattern can be transmitted, in particular wirelessly, to the HEMS.

[0070] The configured wiring pattern is then checked for plausibility using the validation method according to the invention. The process steps can be stored locally in the HEMS or transmitted from the cloud or server 2. Valid result ranges can also be transmitted via the WWW network, and / or a comparison can be performed with result ranges stored in a database in the cloud or on server 2 by transmitting measured values ​​from the HEMS to the cloud or server 2 via the WWW network.

[0071] In one step of the process, the HEMS can initialize the validation procedure. This can, for example, transmit control commands to the components and monitor and analyze the resulting measured values.

[0072] In particular, a controlled component can transmit feedback to the HEMS regarding the current operating state and / or the power currently being generated or consumed. Furthermore, it can record the amount of energy generated and / or consumed so far during the validation process, whether the commands received by the HEMS are being or have been executed, what action was performed, or what power and / or energy consumption has resulted. This and other information can either be transmitted from the respective component to the HEMS and / or the HEMS calculates this information from the recorded measured values.

[0073] To validate the connection pattern, the HEMS can, in particular, generate artificial demand requests (power consumption or power output). These commands can, for example, include: a power request and / or curtailment request to a generator or consumer or storage device BAT. Transmission of an SGReady signal to a controllable consumer and, if necessary, repeating the transmission of the control command. A preferred validation method for an energy system with a PV system comprises, in particular, a step of transmitting weather data or data on radiation intensity, for example, from the cloud or recorded by local sensors, a step of calculating a forecast power of the PV system over a predetermined time interval, and a step of comparing the power actually delivered over the time interval with the calculated power.

[0074] A preferred validation method for checking an electricity meter for the consumption of non-controllable consumers (household consumers) includes, in particular, a step of determining whether a controllable consumer in the wiring pattern is connected to the household electricity supply, see, for example, consumer HH and heat pump HP in wiring pattern A behind meter ZI. By controlling the heat pump HP in wiring pattern A and recording the measured value from meter ZI, the consumption of the non-controllable consumers can then be determined accordingly. By switching the heat pump HP in wiring pattern A off and on, conclusions can be drawn about the position of meter ZI.

[0075] A preferred validation procedure for validating a meter for a heat pump WP according to §14a EnWG, see e.g. Z2 in wiring pattern B or ZI in wiring pattern C, includes in particular the transmission of a power consumption command to the heat pump WP and the reading of the meter and comparison of the power consumed with the power consumption command.

[0076] The validation procedure can, for example, identify interdependent counters. These include sequentially connected cascades of counters, such as ZI and Z2 in connection pattern A, ZI and Z3 in connection pattern B, and ZI to Z3 in connection pattern C. In such a procedure, the individual values ​​of the individual counters ZI to Z3 are determined and compared with each other to determine the sequence of the counters.

[0077] If the wiring pattern has been successfully validated, electrical energy system 1 can be commissioned. If, however, the validation was unsuccessful, an error message can be issued, which may also include a suggestion for a determined actual wiring pattern. The user or installer of the energy system can then have the opportunity to confirm the newly determined wiring pattern, allowing energy system 1 to be commissioned with the actual wiring pattern.

[0078] The features disclosed in the above description, the claims and the drawings may be important both individually and in any combination for the realization of the invention in its various forms.

Claims

PATENT CLAIMS 1. Procedure for validating an electrical energy system (1) in a building comprising the steps: Specifying a wiring pattern of the electrical energy system (1), wherein the wiring pattern describes an arrangement of a plurality of components of the electrical energy system (1) and their relative position and connections; Putting the electrical energy system (1) into a first operating state by controlling at least one first component; Acquisition of at least one measured value in the first operating state; Performing a plausibility check based on at least one measured value and the specified wiring pattern; and Outputting a signal depending on the result of the plausibility check.

2. The method of claim 1, further comprising: Putting the electrical energy system (1) into a second operating state by controlling the first component and / or by controlling a second component; Acquisition of at least one measured value in the second operating state; and Performing the plausibility check depending on the measured values ​​in the first and second operating states and the specified wiring pattern.

3. Method according to claim 1 or 2, wherein specifying the wiring pattern comprises: Starting a human-machine interface; Displaying a prompt to a user to specify the wiring pattern via an input; and Specifying the wiring pattern depending on the user's input.

4. Method according to any one of claims 1 to 3, further comprising: Capturing at least one signal from at least one component of the electrical power system (1); Identifying the at least one component based on the detected signal; and Output of a large number of possible wiring patterns.

5. Method according to any one of claims 1 to 4, wherein the electrical energy system (1) comprises a controllable load (WP) as a first component and an electricity meter (Z) for measuring a consumption of the controllable load (WP), wherein the method further comprises: Controlling the first component by transmitting a power consumption command to the controllable consumer (HP); Capturing at least one measured value by receiving the measured consumption of the controllable load (WP) from the electricity meter (Z); and Performing a plausibility check by comparing the measured consumption with the transmitted power reduction command.

6. Method according to any one of claims 1 to 4, wherein the electrical energy system (1) comprises as a first component a controllable electrical energy storage device (BAT) and / or generator (PV) and an electricity meter (Z) for measuring an output of electrical power from the energy storage device (BAT) or generator (PV), and the method comprises: Controlling the first component by transmitting a power output command to the energy storage device (BAT) and / or generator (PV); Capturing at least one measured value by receiving the measured output of the energy storage system (BAT) and / or generator (PV) from the electricity meter (Z); and Performing the plausibility check by comparing the measured output with the transmitted power output command.

7. A method according to any one of claims 1 to 6, wherein: a first measured value is recorded by a first electricity meter (ZI) at a grid connection point (NAP) via which electrical energy can be drawn from and / or fed into a public electricity grid (3); a second measured value is recorded by a second electricity meter (Z2) which: measures the consumption of a controllable load (WP); or measures the output of an energy storage device (BAT); or a producer's (PV) output is measured; and the consumption of non-controllable consumers (HH) is determined based on a difference between the first and second measured values; and Performing the plausibility check depending on the first measured value, the second measured value and the specified wiring pattern.

8. Method according to any one of claims 1 to 7, wherein the step of outputting the signal comprises: Outputting a message to the user with a suggestion for an alternative wiring pattern depending on the result of the plausibility check, wherein the alternative wiring pattern describes a different arrangement of the plurality of components of the electrical power system (1) and their relative position and connections.

9. Electrical energy system (1) in a building, comprising: a grid connection point (GSP) through which electrical energy can be drawn from a public electricity grid (3) and / or fed into the public electricity grid (3); a plurality of non-controllable loads (HH); a controllable load (WP); an energy storage unit (BST) and / or a generator (PV); an electricity meter (Z) for measuring consumption and / or electrical power output;and a control device (HEMS) for regulating and / or controlling the controllable load (HP) and / or the energy storage unit (BST) and / or the generator (PV), wherein the control device (HEMS) is configured to: specify a wiring pattern of the electrical energy system (1), wherein the wiring pattern describes an arrangement of the grid connection point (GSP), the plurality of non-controllable loads (HH), the controllable load (HP), the energy storage unit (BST) and / or the generator (PV) and their relative positions and connections; transmit a power take-off or power output command to the controllable load (HP) and / or the storage unit (BST) and / or the generator (PV); and thereby put the electrical energy system (1) into a first operating state; receive a measured value of consumption or delivered electrical power from the electricity meter (Z); perform a plausibility check by comparing the measured consumption with the power consumption command or by comparing the measured power output with the power output command depending on the specified circuit pattern; and output a signal depending on the result of the plausibility check.

10. Electrical energy system (1) according to claim 9, further comprising: a heat pump (HP) as a controllable consumer; and / or an electrical device for heating water as a controllable consumer; and / or an electrical energy storage device (ESD) as a controllable consumer and / or as a controllable generator.

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