DE102017121457A9 - System and method for detecting amounts of energy - Google Patents

Abstract

A system for detecting amounts of energy with a first electrical consumption amount counter connected between a network-side supply network connection and a house-side domestic distribution network connection, the first consumption quantity counter having at least two counters, and an energy flow sensor connected between the house distribution network connection and an energy storage connection. The first consumption quantity counter activates one of the at least two counters depending on a switching signal of the energy flow sensor indicating a direction of an energy flow between the house distribution network connection and the energy storage connection.

Description

The subject matter relates to a system and method for detecting amounts of energy.

Private as well as commercial operators of photovoltaic systems currently feed large parts of the self-produced electricity into the energy supply network. For this purpose, the operators (participants) receive so-called feed-in tariffs. The level of feed-in tariffs has fallen rapidly in recent years, so that self-consumption becomes more and more interesting for operators of photovoltaic systems. Today, the feed-in tariff is lower than the cost of extracting electrical energy from the utility grid. With feed-in tariffs of 12 ct / kWh and costs of approx. 30 ct / kWh, this results in a margin of 18 ct / kWh with self-consumption of the self-produced electricity from the photovoltaic system.

However, the described not only applies to photovoltaic systems, but also to other generation systems for generating electrical energy, such as wind turbines, biomass plants, CHP plants or the like. In all systems, it must be considered whether the self-produced electricity is consumed internally or fed into the energy supply grid.

If the following is the production of electricity, this means the current flowing due to the generation / conversion of electrical energy from other energy sources, such as sunlight, combined heat and power, wind power, biomass or the like. Whenever energy generation is mentioned below, it means the generation / conversion of electrical energy from other energy sources, such as sunlight, combined heat and power, wind power, biomass or the like. In the following, green electricity refers to self-produced electricity through the generating plant. Whenever gray matter is mentioned below, it is meant here the power drawn from the power grid or current mixed with this power. The electricity from the distribution network comes partly from renewable sources. However, since he according to the generation mix and Graussomanteile from z. B. contains fossil power plants, it is referred to as gray electricity.

Subsequently, the terms current flow and energy flow can be used synonymously. In particular, the direction of current flow is understood to mean the direction of energy flow, even if these terms are distinguished physically in the case of a temporally resolved consideration of alternating currents. In calculation formulas, a freely definable current or energy flow direction is marked with positive values and the opposite flow direction with negative values. If in the present case energy flow direction or current direction or energy or electricity is mentioned, these terms are usually used interchangeably.

To increase the self-consumption is usually an electrical energy storage, such as a battery. This is charged at times when the generating plant provides more electrical power than is consumed by the household. During periods when the power requirement of the household is greater than the power of the generating plant, the battery can be discharged.

However, in order to avoid that previously stored from the power grid in the memory electrical energy is then fed from the memory back into the power grid and then accrue a feed-in, a combined storage in one and the same memory is not possible.

A combined storage of green and gray electricity in one and the same memory is not permitted, since there are no measurement concepts with which it is clearly measurable whether green or gray current is fed into the power grid from the memory or consumed by the subscriber.

However, the grid operator as well as the electricity traders and distributors have a great interest in ensuring that the privately installed energy storage devices are also used on the grid, on the market or on the system. Especially at times of peak generation, the stores should be able to receive gray power from the utility grid and at times of peak loads the stores should be able to provide power to the utility grid. Due to the previous requirements, however, it is only possible either exclusively to store the self-generated electricity, that is to say the green electricity, in the storage and then to deliver it either to the household or to the energy supply network (green electricity storage). Or the storage tank may not receive green electricity (gray electricity storage) when the generating plant supplies electricity.

Thus, it is either possible for the memory to store green power when the household is completely supplied by the generating plant, or that the memory can be used as gray power storage in network, market or or used systematically. Green electricity storage is of interest to users, gray electricity storage is of interest to network operators and / or electricity traders and distributors. The only alternative use of the memory escapes the operator of the generation plant revenue opportunities, the network operators opportunities for grid stabilization and the electricity traders and distributors opportunities for trading.

Because of this problem, the object of the object was to increase the possibility of using an electrical energy storage. In particular, a metrological solution is to be made available, which moves the memory both for the optimization of self-consumption and for network, market and system-appropriate operation.

This object is achieved by a system according to claim 1 and a method according to claim 7.

With the objective solution, an electrical energy storage to both the increase of self-consumed green electricity and market, network and / or system-appropriate loading and unloading can be. For this purpose, the memory for charging and discharging energy from the upstream power grid (gray electricity) as well as for charging energy from the power generation plant (green power) and discharged to the connected load, such as the budget serve.

In the case of the named system, a subscriber is connected to a power supply network via a supply network connection. Starting from the supply network connection, a first consumption quantity meter is initially provided which has at least two counters. With this first consumption meter, currents can be measured that flow between a house distribution network connection and the supply network connection. In the case of an energy flow from the supply network connection in the direction of the domestic distribution network connection, there is a reference to gray electricity. In the case of an energy flow from the domestic distribution network connection in the direction of the supply network connection, there is a feed of electricity into the supply network. In this feed must be ensured that can be separated metrologically between the electricity that is generated locally directly by the generating plant and the power that was possibly also previously obtained from the network and network, market and / or system-appropriate in the memory was saved. For this distinction, it is objectively proposed that an energy flow sensor is arranged between the domestic distribution network connection and an energy storage connection. Electricity produced by the generating plant and temporarily stored in the storage tank is treated by the legislature as gray electricity when it is fed into the grid. In concrete terms, it is possible that at the same time green PV power and gray memory current can flow in the direction of the grid and also both green and gray current can be stored in the memory. About the Hausverteilnetzanschluss, such as a distribution rail, the energy storage, the generation system and the house distribution, in particular the domestic electrical load can be indirectly connected. Under a house distribution, any kind of subdistribution on a load, e.g. be understood in a single / multiple dwelling, an office building, a warehouse, a production facility or the like. This includes both private and company participants.

An electrical energy store, for example via an inverter, can be connected to an energy storage connection.

With the aid of an energy flow sensor, it is possible to determine whether electrical energy from the direction of the domestic distribution network connection flows in the direction of the energy storage connection or vice versa. The energy flow sensor can either be an independent device or integrated into another device, for example a consumption meter. In particular, the energy flow sensor can be arranged in a counter arranged on the energy store at the energy store connection or the counter can measure the energy flow direction as an energy flow sensor. Subsequently, e.g. via two-wire line the information about the direction of energy flow or a switching information for the switching devices passed to counter. The energy flow sensor may be part of a counter.

The energy flow sensor is objectively capable of influencing an activation of the at least two counters of the first consumption amount counter depending on the direction of energy flow. The energy flow sensor is in operative connection with the counters and / or the consumption quantity counter. An activation may be a switching of the at least two counters of the first consumption amount counter depending on the direction of energy flow. Activation can mean that the counter actually counts. Activation is not understood here in the sense that the counters are activated during installation of the meter by the installer or counter delivery, which are then available for the measurement.

It is proposed that the first consumption quantity counter be activated or switched between the at least two counters depending on a switching signal of the energy flow sensor indicating a direction of an energy flow between the house distribution network connection and the energy storage connection. The energy flow sensor may output a switching signal indicative of a direction of the measured energy flow. If the energy flow is, for example, from the direction of the domestic distribution network connection in the direction of the energy storage connection, then this electrical energy can come either from the generation plant or from the upstream supply network. The switching signal then activates, for example, a first counter of the first consumption amount counter. The first counter can be set up to measure energy flowing from the domestic distribution network connection in the direction of the supply network connection. In particular, the first counter can be used to measure a green current. In fact, if electrical energy from the domestic distribution network connection additionally flows in the direction of the supply network connection, not only does the storage store electrical energy of the generation plant, but excess energy is also fed into the energy supply network.

On the other hand, if the energy flow sensor measures an energy flow from the direction of the energy storage connection in the direction of the domestic distribution network connection, the memory is discharged. In this case, the switching signal can activate the second counter or switch over to the second counter. The second counter can be set up to measure an energy flowing from the domestic distribution network connection in the direction of the supply network connection. In particular, the second counter can be used to measure a gray current. That is, if electric energy flows from the domestic distribution network connection in the direction of the supply network connection, and at the same time the storage unit is discharged, this electrical energy is measured at the first consumption quantity counter as gray current.

According to one embodiment, it is proposed that the first consumption quantity counter, depending on the switching signal, activate either a first or a second one of the counters or switch over to either a first or a second one of the counters. This means that only one of the two counters is activated in the same energy flow direction.

It goes without saying that the first consumption quantity meter can also have at least a third counter in addition to the first two totalizers. The first two counters may be configured to detect an energy flow from the home distribution network connection towards the utility grid, whereas a third counter measures energy flow from the direction of the utility grid in the direction of the home distribution network connection. However, this total reference quantity can on the one hand be a network, market and / or system-used reference quantity and, on the other hand, be an amount of energy related to the load.

As already explained, an electrical energy store, a generating installation and an electrical load, for example a domestic network, can be indirectly connectable to the domestic distribution grid connection. According to one exemplary embodiment, it is proposed that, starting from the home distribution network connection, at least one energy storage connection, a generation device connection and a home network connection branch off. It is now proposed that a second consumption meter be connected to the house distribution network connection. From the second consumption quantity counter, the generation device connection and the home network connection can indirectly or directly branch off.

For a correct detection of self-consumption of simultaneously produced green power, the storage and subsequent use of self-produced green power and the feeding of self-produced green power in the power grid independently of the network use of the memory, the second consumption meter has at least one depending on the switching signal activatable or deactivatable or switchable counter on. For example, it is possible to switch to a first counter when the energy flow sensor measures an energy flow from the energy storage connection in the direction of the domestic distribution network connection. If an opposing energy flow is measured, if the storage device receives electrical energy, it is possible, for example, to switch to a second meter of the second consumption meter.

The counters mentioned here can be provided with a backstop. This makes it possible to ensure that the respective counters measure only electrical energy which flows from a first direction to a second direction and not vice versa. In the case of a reverse energy flow, the counters do not count backwards but remain at the value counted up to that point.

For the customer, it is necessary to distinguish between directly self-consumed green power, that is, at the same time consumed green power, which originates from the generating plant and indirectly self-consumed green power from the generating plant, that is, the previously stored green power of the generating plant. For this reason, it is proposed that a third consumption quantity counter is arranged between the second consumption quantity meter and the domestic network connection. The third consumption quantity counter may have at least one counter. The counter of the third consumption quantity counter is used to record the electrical energy that relates to the distribution of the house.

Also, a fourth consumption amount counter may be provided between the second consumption amount counter and the generation direction terminal. The fourth consumption quantity counter can have at least two counters. One of these counters is used to record the electrical energy obtained from the generating plant. Another counter serves to detect the electrical energy emitted by the generating plant.

Finally, a fifth consumption quantity meter can be arranged between the domestic distribution network connection and the energy storage connection. This fifth consumption meter can have two counters. A counter can measure the electrical energy obtained from the energy store. Another counter can measure the electrical energy emitted by the energy store.

The counters of the third, fourth and fifth consumption amount counter are preferably permanently active and in particular not influenced by the switching signal.

It is also proposed that the counters of the first and / or second consumption quantity counter can be switched exclusively as a function of the switching signal.

Another aspect is a method according to claim 7.

In this method, an energy flow direction between an energy storage connection and a home distribution connection is detected. Furthermore, this method is used to control a first consumption quantity meter between the house distribution network connection and a supply network connection, which has at least two counters. For this purpose, a switching signal is output depending on the detected direction of energy flow and this switching signal leads to a switching between at least two counters in the first consumption amount counter or switching between at least two counters in the first consumption amount counter. The subject counters have counters, each of which perform at least two measurements for an energy flow direction from the house distribution network connection to the power grid connection. Thus, in each case at least two counters are set up for an identical energy flow direction, in particular from the house distribution network connection to the supply network connection and can be activated as a function of the switching signal; in particular, it is possible to switch between the counters depending on the switching signal.

For measuring the energy transmitted from the domestic distribution network connection to the supply network connection, two counters are provided in the first consumption quantity counter. According to one embodiment, depending on the switching signal, either a first or a second of these counters may be activated in the consumption amount counter or switched to a first or a second of these counters in the consumption amount counter.

A third counter may be provided which measures an energy transmitted from the utility grid to the home distribution network terminal.

Energy is exchanged between the supply grid connection and the home distribution grid connection. In the case of a current flow from the domestic distribution network connection in the direction of the supply network connection, an energy is supplied to the supply network and, in the case of a current flow from the supply network connection in the direction of the domestic distribution network connection, energy is drawn from the supply network.

Energy delivery is preferably measured with the first and second counters, whereas energy reference is measured with a third counter.

Thus, the first consumption amount counter may have three counters in which a meter is used for the purchase of energy and the first two registers are used for the supply of energy.

As already explained, all counters mentioned here can be provided with a backstop, so that they only measure energy when the predetermined current flow direction is maintained.

In addition to the first consumption quantity meter, a second consumption quantity meter may be provided, in which likewise a counter is activated as a function of the switching signal or counters are switched as a function of the switching signal.

The second consumption quantity counter may be arranged between the house distribution network connection on the one hand and a generator connection and a domestic network connection on the other hand and measure a quantity of energy exchanged between these connections. In this case, in particular, an energy flow in the direction of the domestic distribution network connection can be measured.

With the help of a first counter of the second consumption amount counter, for example, an amount of energy at an energy flow in the direction of Hausverteilnetzanschlusses be measured when the energy storage is discharged, that is, a current flow from the energy storage port towards Hausverteilnetzanschluss can be measured or no current flow between the energy storage port and the Hausverteilnetzanschluss measurable is.

With the help of a second counter of the second consumption meter, for example, an amount of energy can be measured at an energy flow from the direction of the domestic distribution network connection, when the energy storage is charged, that is, a current flow from the house distribution network connection in the direction of energy storage connection is measurable.

A current flow or a current flow direction between the house distribution network connection and the energy storage connection can be measured with the energy flow direction sensor. A current flow can be equated with an energy flow and the energy flow direction sensor may be integrated in another device or not.

It is preferred if the first counter of the first consumption amount counter measures a first amount of energy when the energy store stores electrical energy, that is to say when electricity flows from the house distribution network connection in the direction of the energy storage connection.

It is preferred if the second counter of the first consumption amount meter measures a second amount of energy, if the energy store provides electrical energy, that is, if electricity flows from the energy storage connection in the direction Hausverteilnetzanschluss or if the energy storage neither electrical energy stores nor supplies, so no current flow is measurable.

According to one exemplary embodiment, it is proposed that a first counter of the second consumption quantity counter measures a fourth amount of energy if the energy store does not store or deliver electrical energy or it outputs electrical energy. In particular, this is the case when a current flow from the energy storage connection in the direction of the domestic distribution network connection can be measured.

A third consumption quantity meter may be provided with the aid of which a sixth quantity of energy supplied to the household supply connection is measured.

At the generating means, a fourth consumption amount counter can be provided. In this two counters can be provided. A first counter may measure a seventh amount of energy delivered by the generating means, whereas a second counter measures an eighth amount of energy drawn by the generating means.

• 1 ein System zur Erfassung von Energiemengen mit einer Mehrzahl von Verbrauchsmengenzählern und einem Energieflussrichtungssensor.

The energy flow directions and the respective arrangements of the consumption quantity counter and the calculation of relevant amounts of energy are explained in more detail below with reference to a drawing showing an exemplary embodiment. In the drawing shows:

• 1 a system for detecting amounts of energy with a plurality of consumption meters and a power flow direction sensor.

1 shows a system for measuring energy quantities. In this case, the system has a power supply connection 2 on, with which the system connects to an electrical supply network 4 , In particular, a three-phase AC mains is connectable. Starting from the power supply connection 2 is first a first consumption meter 6 provided to a home distribution network connection 8th connected. To the house distribution network connection 8th is an electrical energy storage 10 indirectly connected. The electrical energy storage 10 is via an energy storage connection 12 indirectly to the house distribution network connection 8th connected.

The house distribution network connection 8th is also a second consumption meter 14 with on the one hand a home network connection 16 and a generator port 18 connected.

Between the second consumption meter 14 and the house network connection 16 is a third consumption meter 20 connected.

Between the second consumption meter 14 and the generator port 18 is a fourth consumption meter 22 connected.

Between the house distribution network connection 8th and the energy storage port 12 is an energy flow direction sensor 24 arranged.

Between the energy flow sensor 24 and the energy storage port 12 is a fifth consumption meter 26 connected. Alternatively, the energy flow sensor 24 also between the energy storage connection 12 and a fifth consumption quantity counter 26 be connected. In particular, the energy flow sensor 24 and a fifth consumption meter 26 also be integrated in one device.

The consumption meters 6 . 14 . 20 . 22 and 26 can be formed in particular as a smartmeter. The consumption meters 6 . 14 . 20 . 22 . 26 can have one or more counters that are formed to measure amounts of energy.

At the house network connection 16 can be a burden 28 , in particular a sub-distribution of a subscriber to be connected. At the generator port 18 may be a generator 30 , in particular a PV system to be connected.

For the following discussion, the in 1 dotted-arrow direction defines the currents I _SP . I _network . I _HH . I _PV demonstrate. Currents> 0 are defined as an energy flow in the direction of the counting arrow and currents <0 are defined as an energy flow in the opposite direction of the current arrow. The current I _SP represents the one between the port 8th and the connection 12 flowing electricity and thus the between the connection 8th and the connection 12 exchanged electrical energy. The current I _network represents the one between the port 2 and the connection 8th flowing electricity and thus the between the connection 2 and the connection 8th exchanged electrical energy. The current I _HH represents the at the connection 16 flowing electricity. The current I _PV represents the at the connection 18 flowing electricity.

The energy flow direction sensor 24 is via a switching signal with the first consumption quantity counter 6 and the second consumption quantity counter 14 connected.

In the first consumption meter 6 At least two counters can be provided, each with an amount of energy at an energy flow from the direction of the house distribution network connection 8th in the direction of the power grid connection 2 measure up. For example, a first of the two counters measures a first amount of energy E _net , _{delivery (green1)} , For example, a second of the two counters measures a second amount of energy E _net , _{delivery (gray1)} ,

The OBIS key figure after DIN EN 62056-61: 2007-06 OBIS - "Object Identification System" for the second counter is eg 2.8.1. The OBIS key figure for the first counter is eg 2.8.2. Between these two counters can be switched by the switching signal.

If I _SP <0, that is the energy storage 10 Current is the first meter to measure E _{network delivery (green 1)} active. If I _SP > = 0, that is the energy storage 10 Power supply, the second counter is active for measuring E _{mains supply (gray1)} .

In the first consumption meter 6 can be provided at least a third counter, that an amount of energy at an energy flow from the direction of the power supply connection 2 in the direction of the house distribution network connection 8th measures. The counter measures, for example, a third amount of energy E _Ges , _{cover (gray)} , The OBIS key figure for the third index is eg 1.8.0.

A further switching of counters depending on the switching signal can for the second consumption amount counter 14 be provided.

In the second consumption meter 14 For example, a first counter may be provided so that there is a fourth amount of energy flowing from the direction of the terminals 16 . 18 in the direction of the home network connection 8th measures. The counter measures, for example, a fourth amount of energy E _PV-HH , power _{supply (green)} , The OBIS key figure for the totalizer is eg 2.8.1. This first counter can be active if I _SP > = 0, that is the memory 10 Power supplies. This first counter can not be active if I _SP <0, that is the memory 10 Electricity stores.

In the second consumption meter 14 For example, a second counter may be provided such that there is a fifth amount of energy flowing from the direction of the terminals 16 . 18 in the direction of the home network connection 8th measures. The counter measures, for example, a fifth amount of energy E _PV-HH , _{rest delivery (green)} , The OBIS key figure for the totalizer is eg 2.8.2. This second counter can be active if I _SP <0, that is the memory 10 Electricity stores. This second counter can not be activated if I _SP > = 0, that is the memory 10 Power supplies.

In the subject method is by the energy flow direction sensor 24 an energy flow between the house distribution network connection 8th and the energy storage port 12 measured. Is the energy flow positive, that is, energy flows from the memory 10 towards house distribution network 8th or if no current flow is measurable, ie I _SP > = 0, then the first counter of the first consumption quantity counter can 6 and the first counter of the second consumption amount counter 14 be active. If the energy flow is negative, that is, energy flows from the direction of the house distribution network 8th in the direction of the store 10 , So I _{SP <} 0, so can the second counter of the first consumption amount counter 6 and the second counter of the second consumption amount counter 14 be active.

In addition to the first and second consumption meters 6 . 14 can the third consumption meter 20 be equipped with a counter, which is a sixth amount of energy in an energy flow in the direction of the home network connection 16 measures. The OBIS index of the counter can be 1.8.0 and the sixth energy quantity E _HH , _cover be.

The fourth consumption meter 22 may comprise two counters, wherein a first counter a seventh amount of energy in an energy flow from the direction of the generating plant 30 measures, ie an electrical energy supplied by the generating plant. The first counter can use the OBIS code 2.8.0 and the measured seventh energy with E _{PV, delivery} be designated.

A second counter can be an eighth amount of energy in an energy flow towards the generating plant 30 measure, ie from the generating plant 30 related electrical energy. The second counter can use the OBIS code 1.8.0 and the measured eighth energy with E _{PV, cover} be designated.

Finally, the fifth consumption meter 26 also have two counters. A first counter may be a ninth amount of energy at a flow of energy from the direction of the memory 10 measure, so one of the memory 10 supplied electrical energy. The first counter can use the OBIS code 2.8.0 and the measured ninth energy with E _{SP, delivery} be designated.

A second counter can deliver a tenth amount of energy at a flow of energy towards the store 10 measure, so from the memory 10 related electrical energy. The second counter can use the OBIS code 1.8.0 and the measured tenth energy with E _{SP, reference} be designated.

With the aid of the measuring concept shown, it is now possible, decidedly directly and indirectly consumed, in the generating plant 30 to determine generated electrical energy and also to determine what electrical energy from the generating plant 30 into the supply network 4 is fed in as well as which energy from the supply network 4 is relevant and is relevant for billing. The quantities of energy consumed and fed into the market, grid and system can also be determined for billing purposes.

The to the net 4 supplied gray matter or the corresponding energy, that is, the cached amount of energy, whether generated locally or from the supply network 4 based, calculated to $${\text{e}}_{\text{network}\text{,Delivery}\left(\text{Gray}\right)}={\text{e}}_{\text{network}\text{,Delivery}\left(\text{Gray1}\right)}-{\text{e}}_{\text{PV}-\text{HH}\text{,Network}\text{,Delivery}\left(\text{green}\right)},$$

The to the net 4 Delivered green electricity or the corresponding energy, that is, the same time generated and fed energy amount is calculated to $${\text{e}}_{\text{network}\text{,Delivery}\left(\text{green}\right)}={\text{e}}_{\text{network}\text{,Delivery}\left(\text{green1}\right)}+{\text{e}}_{\text{PV}-\text{HH}\text{,Network}\text{,Delivery}\left(\text{green}\right)},$$

Furthermore, it is also possible, for example, to calculate what amount of energy of the self-generated current is stored in the memory. This is $${\text{e}}_{\text{SP}\text{,Reference}\left(\text{green}\right)}={\text{e}}_{\text{PV}-\text{HH}\text{,Rest}-\text{delivery}\left(\text{green}\right)}-{\text{e}}_{\text{network}\text{,Delivery}\left(\text{green1}\right)},$$

The of the electrical energy storage 10 finally, the amount of gray taken is calculated to be $${\text{e}}_{\text{SP}\text{,Reference}\left(\text{Gray}\right)}={\text{e}}_{\text{SP}\text{,Reference}}-{\text{e}}_{\text{SP}\text{,Reference}\left(\text{green}\right)}$$

Weight 28 draws a quantity of electricity directly from the supply network 4 , which can be calculated as follows $${\text{e}}_{\text{HH}\text{,Reference}\left(\text{grau\_direkt}\right)}={\text{e}}_{\text{Ges}\text{,Reference}\left(\text{Gray}\right)}-{\text{e}}_{\text{SP}\text{,Reference}\left(\text{Gray}\right)}$$

The directly self-consumed energy, that is, the one that is synchronous to the generation in the generation plant 30 consumed, calculated to $${\text{e}}_{\text{HH}\text{,Reference}\left(\text{grün\_direkt}\right)}={\text{e}}_{\text{PV}\text{,Delivery}}-\left[{\text{e}}_{\text{PV-HH}\text{,Network}\text{,Delivery}\left(\text{green}\right)}+{\text{e}}_{\text{PV-HH}\text{,Rest}-\text{delivery}\left(\text{green}\right)}\right],$$

The non-simultaneously consumed energy, that is, the one in the memory 10 cached, calculated to $${\text{e}}_{\text{HH}\text{,Reference}\left(\text{aus\_Speicher}\right)}={\text{e}}_{\text{HH}\text{,Reference}}+{\text{e}}_{\text{PV}\text{,Reference}}-{\text{e}}_{\text{HH}\text{,Reference}\left(\text{grau\_direkt}\right)}$$

With the aid of the measuring system shown, it is now possible for the first time to use an energy store for storing green and gray power and at the same time be able to clearly record all energy quantities relevant to billing.

LIST OF REFERENCE NUMBERS

2

Supply mains

4

supply network

6

Consumption meter

8th

House distribution network connection

10

electrical energy storage

12

Energy storage connection

14

Consumption meter

16

Home Network Connection

18

Generator connection

20

Consumption meter

22

Consumption meter

24

Energy flow sensor

26

Consumption meter

28

load

30

generator

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited non-patent literature

• DIN EN 62056-61: 2007-06 [0060]

Claims (16)

System for detecting amounts of energy with - a first electrical consumption meter connected between a network-side supply network connection and a house-side domestic distribution network connection, wherein the first consumption quantity meter has at least two counters, - an energy flow sensor connected between the house distribution network connection and an energy storage connection, characterized in that the first consumption quantity meter is dependent activated by a one-direction of an energy flow between the house distribution network connection and the energy storage connection indicating switching signal of the energy flow sensor of at least two counters. System after Claim 1 , characterized in that the first consumption quantity counter activates either a first or a second one of the counters depending on the switching signal. System after Claim 1 or 2 , characterized in that - starting from the domestic distribution network connection branch off at least one energy storage connection, a generating device connection and a Hausnetzanschuss, between the Hausverteilnetzanschluss on the one hand and the generating device connection and the Hausnetzanschuss on the other hand, a second consumption meter is arranged. System after Claim 3 , characterized in that the second consumption quantity counter activates a counter depending on the switching signal, in particular activates or deactivates depending on the switching signal of either a first counter or switches over between at least two counters depending on the switching signal. System according to one of the preceding claims, characterized in that - arranged between the second consumption amount counter and the home network connection, a third Verbrauchsmengenzähler, and / or - that arranged between the second consumption amount counter and the generating device terminal, a fourth consumption amount counter, and / or - that between the Hausverteilnetzanschluss and the energy storage port is arranged a fifth consumption amount counter. System according to one of the preceding claims, characterized in that - the counters of the first and / or second consumption amount counter can be activated and / or switched exclusively depending on the switching signal. Method for detecting amounts of energy with the steps Detecting an energy flow direction between an energy storage connection and a home distribution network connection, wherein a first consumption quantity meter is arranged between the home distribution network connection and a supply network connection and has at least two counters, Outputting a switching signal depending on the detected energy flow direction, - Activate at least one of the two counters in the first consumption amount counter depending on the switching signal. Method according to Claim 7 , characterized in that - depending on the switching signal, either a first or a second counter is activated in the first consumption quantity counter. Method according to Claim 7 or 8th , characterized in that - at least one counter is activated in a second consumption amount counter depending on the switching signal. Method according to one of the preceding claims, characterized in that - the first consumption quantity meter measures a first and / or second and / or third quantity of energy exchanged between a supply network connection and a home distribution network connection, and / or in that the second consumption quantity meter measures a fourth and / or fifth energy quantity exchanged between the domestic distribution network connection on the one hand and a generator connection and a household supply connection on the other hand. Method according to one of the preceding claims, characterized in that - a first counter of the first consumption amount counter measures a first amount of energy when the energy storage stores electrical energy and that a second counter of the first consumption amount counter measures a second amount of energy when the energy storage emits electrical energy or none stores or gives off electrical energy. Method according to one of the preceding claims, characterized in that - a first counter of the second consumption amount counter measures a fourth amount of energy when the energy storage emits electrical energy or does not store or emit electrical energy. Method according to one of the preceding claims, characterized in that - a third consumption quantity meter measures a sixth energy quantity delivered to the household supply. Method according to one of the preceding claims, characterized in that - a first count of a fourth consumption amount counter measures a seventh amount of energy output from a generator port and / or a second counter of a fourth consumption amount counter measures an eighth amount of energy related by a generator port. Method according to one of the preceding claims, characterized in that - a first counter of a fifth consumption quantity counter measures a ninth amount of energy emitted by the energy storage connection and / or a second counter of a fifth consumption quantity counter measures a tenth amount of energy received by the energy storage connection Method according to one of the preceding claims, characterized in that - measure the first counter and the second counter of the first consumption meter from the Hausverteilnetz to the power grid output energy quantities and that a third counter of the first consumption meter measures one of the energy supply network to the Hausverteilnetz output third energy amount ,

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