Solution for Distribution System Operators (DSO)

The increasing share of Renewable Energy Supply (RES) as well as the mobility and heating transition require a short-term technological solution for over or underload management in the low-voltage distribution network. For secure operation of the electrical grid, DSOs and Energy Provider need a standardised way to communicate with buildings and exchange necessary data to optimize and balance the loads or feed-ins. DSOs may identify hotspots by building or device level monitoring and can intervene once the electrical grid faces instability. EEBUS offers a standard based solution for monitoring and control of buildings to avoid over or underload scenarios.

Capacity Management on Building Level
Time of Use Tariffs

Capacity Management on Building Level

With EEBUS communication the DSO may read the current power consumption, frequency or voltage at the grid connection on building or device level, e.g. the Electric Vehicle (EV). In case of an impending grid congestion the DSO sends a signal to the building’s gateway to limit the l power consumption or feed-in at the grid connection. The received power limitation reflects the maximum power the building is allowed to consume or the feed-in for a defined amount of time to avoid a critical status of the electrical grid. This approach reduces the need for intervention by the DSO to a minimum and prevents drastic measures such as binding cut-off times and load shedding.

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GRID

DSO requests metering information of total consumption and may send power limitations in case of too high grid loads to the EMS via the gateway. This gateway must be compliant with country-specific DSO and grid protocol requirements (e.g. IEC 61850/OpenADR) and is representing the point of transfer of responsibility of the energy provider’s and end-user’s communication infrastructure. In the German case this would be the FNN control box or the Added Value Modul.

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METER

The Meter is providing the buildings’ total power consumption to the EMS or the gateway.

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EMS

The EMS receives power limitation from the gateway and dispatches available power to the corresponding devices according to the cost and comfort related preferences set by the end-user.

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DEVICES e.g. ELECTRIC VEHICLE SUPPLY EQUIPMENT (EVSE)/EV

The devices may be connected to an EMS (in case of two or more controllable devices) or directly to the gateway to dispatch the available power capacity to connected devices. Through the option of power limitation, the EV owner may get a higher connection capacity instead of static power consumption limitations.

Time of Use Tariffs

Time of use tariffs can origin either from the energy provider based on electricity market prices, or from the DSO, based on transmission loads. The Energy Provider may offer energy according to the current electricity market price (e.g. EEX) to adjust the consumption to the availability of energy.

The DSO can provide dynamic transmission fees as a preventive measure to avoid overload scenarios, by influencing the overall consumption or feed-in of buildings according to the grid situation.

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Energy Provider/DSO

The Energy Provider may provide variable tariffs based on electricity market prices and availabilty of energy. The DSO may increase transmission fees to prevent overload scenarios of the electrical grid prior to submitting power limitations to the correponding grid connections.

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EMS

The EMS receives the time of use tariff, directly from the DSO or Energy Provider, through a gateway or cloud service and offers the energy through incentives tables to the controllable devices. The devices will choose the best price option according to their energy demands and provide their consumption plans to the EMS.

Solutions for EMS Providers

The Energy Management System (EMS) is coordinating the energy flows inside the building. While considering the base load of the building it optimises all energy-relevant controllable devices by adjusting the energy flows in the most efficient way. The EMS knows about the physical capacity restrictions of the building’s grid connection as well as temporary grid limitations or market driven tariff information and manages the energy consumption and production of controllable devices inside a building accordingly. End-customers may set their preferences in terms of costs and comfort, which will be considered in the optimisation of energy flows by the EMS.

Capacity Management on Building Level
Time of Use Tariffs
Increase of Self Consumption
Monitoring and Comfort

Capacity Management on Building Level

The EMS periodically derives the power schedule considering all energy demands, PV production forecast and energy storage status. To identify hot spots the Distribution System Operator (DSO) may read the current power consumption, frequency or voltage at the grid connection of the building. In case of an impending grid congestion, the DSO sends a signal to the building’s control unit to limit the actual power consumption or feed-in at the grid connection. The EMS which is connected to the control unit via EEBUS acts upon the limits and adjusts the controllable devices accordingly to avoid a critical status of the public grid.

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ELECTRIC VEHICLE SUPPLY EQUIPMENT (EVSE)/EV

The EVSE/EV may be connected to an EMS (in case of two or more controllable devices) or directly to the gateway to dispatch the available power capacity to the controllable devices. The EV will be charged within the limits given by the DSO or the EMS. Through the option of power limitation, the EV owner may get a higher connection capacity instead of static power consumption limitations.

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METER

The Meter is providing the buildings’ total power consumption to the EMS or the gateway.

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HVAC

The HVAC device is connected to the EMS which dispatches the available power to the connected device according to the energy demand and end user preferences.

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PV Inverter / Battery

The PV Inverter / Battery is connected to the EMS and may provide grid support (e.g. P, Q) according to DSOs’ constraints.

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EMS

The EMS receives power limitation from control unit and dispatches available power to the corresponding devices according to cost and comfort related preferences set by the end user.

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GRID

DSO requests metering information of total consumption and may send power limitations in case of too high grid loads to the EMS via the gateway. This gateway must be compliant with country-specific DSO and grid protocol requirements (e.g. IEC 61850/OpenADR) and is representing the point of transfer of responsibility of the energy provider’s and end-user’s communication infrastructure. In the German case this would be the FNN control box or the Added Value Modul.

Time of Use Tariffs

Time of use tariffs can origin either from the energy provider based on electricity market prices or the DSO based on transmission loads. The tariff information is sent from ESP via the gateway or cloud, to the EMS which aligns the overall power consumption to the tariff information received. Depending on the end users’ preferences, the EMS offers energy to the controllable devices while considering the based load as well as the uncontrollable devices. Controllable devices such as EV or heat pump will calculate their power consumption schedules by taking advantage of their flexibility and make the consumption schedule available to the EMS. This enables cost-optimised operation of the devices or revenue-optimised PV feed-in.

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EVSE/EV

The EVSE/EV is connected to the EMS to recieve the tariff information. The EV will choose the best price option according to its’ energy demand and provide its charging plan to the EMS.

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ESP/DSO

The ESP may provide tariff information based on the electricity market price (e.g. EEX) to adjust the consumption to the availability of energy. The DSO can provide dynamic transmission fees as a preventive measure to avoid overload scenarios, by influencing the overall consumption or feed-in of buildings according to the grid situation.

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HVAC

The HVAC device is connected to the EMS to receive the tariff information. It will choose the best price option according to its’ energy demand and provides a consumption plan to the EMS.

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PV Inverter / Battery

The PV Inverter / Battery is connected to the EMS which receives feed-in tariff information and influences the PV Inverter accordingly.

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EMS

The EMS receives the tariff information through a gateway or cloud service and offers the energy through incentives table to controllable devices. The devices will choose the best price option according to their energy demands and provide their consumption plan to the EMS.

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White Good Device

The white good device receives a smart start signal from the EMS in case of ow price of electricity.

Increase of Self Consumption

The EMS influences the power consumption of controllable devices by considering the energy demands, PV production forecast and energy storage status as well as the tariff information. First, the EMS schedules all demands underneath the PV production curve. In presence of energy storage capability such as stationary battery system or bidirectional EV (BEV), PV over production may be stored to provide it to the building after sun set. During feed-in limitation, costless PV energy is available for high consuming flexible loads such as EV or heat pump. The EMS also considers device specific constraints, e.g. time of departure or energy demand of the EV. The end user benefits from reduced energy costs while improving his ecological footprint.

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METER

The meter is providing the buildings’ total power consumption to the EMS to enable zero consumption or feed-in.

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EVSE/EV/BATTERY

The EVSE/EV
submits its energy demand and departure time to the EMS. If the end user choses CO2 friendly charging the EMS takes care of charging with high portion of PV energy. In case of a bidirectional EV, the EV’s battery may be discharged for home supply (V2H) if it is ensured that it will be charged up to the departure time according to the end user’s preferences.

The Battery
enables storage of PV energy to provide it to the building after sun set. Within its operating limits it is controlled by the EMS.

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HVAC

The HVAC device submits its energy demand to the EMS. In case the PV inverter is power curtailed by the grid, the heat pump may run a C02 neutral domestic hot water (DHW) session for free.

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PV Inverter / Battery

The PV inverter is the key element of the self-consumption solution and is considered to produce as much PV energy as possible. It is used to supply the building’s energy demand and in case of PV over production to charge the stationary battery system or BEV or to run a CO2 neutral domestic hot water (DHW) session for free.

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EMS

The EMS knows about all energy demands including the base load of the building as well as the PV production forecast. From this the EMS derives the optimal operation schedules of the devices without loss of comfort. If there is a major change in energy production or demand the EMS will recalculate the operation schedules.

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White Good Device

The white good device receives a smart start information from the EMS according to the operation schedule calculated by the EMS.

Monitoring and Comfort

EEBUS enables devices to communicate their current consumption and or generation as well as a forecast of their energy behaviour. This enables an EMS or any kind of display to collect energy relevant information for end user interaction or provide them to smart home or home automation systems who take care of the end users’ comfort.

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EVSE/EV

The EVSE/EV

The EVSE/EV provides its state of charge, power consumption and charging history report to the EMS.

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HVAC

The heat pump provides the power consumption to the EMS and adjusts temperature settings.

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PV Inverter

The PV inverter provides all relevant inverter data for end user visualisation.

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EMS

The EMS aggregates information for visualisation and parametrisation.

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Battery

The battery provides all relevant battery data for end user visualisation.

Solutions for device manufactures

With EEBUS, devices can be connected and controlled independently of their manufacturer using a common understanding of signals and information while keeping their domain and device specific requirements. A holistic and networked end user system allows for best-in-class efficiency inside the building. A central logic inside the building is the Energy Management System (EMS) which optimises all energy-relevant controllable devices by adjusting the energy flows in the most efficient way. The holistic approach enables a common standard based communication interface as single point of contact towards the Distribution System Operator (DSO) or the Energy Provider to enable market incentives such as dynamic price of energy within the power constraints given by the DSO.

Capacity Management on Building Level
Time of Use Tariffs
Increase of Self Consumption
Monitoring and Comfort

Capacity Management on Building Level

The EMS periodically derives the power schedule considering all energy demands, PV production forecast and energy storage status. To identify hot spots the Distribution System Operator (DSO) may read the current power consumption, frequency or voltage at the grid connection of the building. In case of an impending grid congestion, the DSO sends a signal to the building’s control unit to limit the actual power consumption or feed-in at the grid connection. The EMS which is connected to the control unit via EEBUS acts upon the limits and adjusts the controllable devices accordingly to avoid a critical status of the public grid.

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ELECTRIC VEHICLE SUPPLY EQUIPMENT (EVSE)/EV

The EVSE/EV may be connected to an EMS (in case of two or more controllable devices) or directly to the gateway to dispatch the available power capacity to the controllable devices. The EV will be charged within the limits given by the DSO or the EMS. Through the option of power limitation, the EV owner may get a higher connection capacity instead of static power consumption limitations.

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METER

The Meter is providing the buildings’ total power consumption to the EMS or the gateway.

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HVAC

The HVAC device is connected to the EMS which dispatches the available power to the connected device according to the energy demand and end user preferences.

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PV Inverter / Battery

The PV Inverter / Battery is connected to the EMS and may provide grid support (e.g. P, Q) according to DSOs’ constraints.

tooltip text

EMS

The EMS receives power limitation from control unit and dispatches available power to the corresponding devices according to cost and comfort related preferences set by the end user.

tooltip text

GRID

DSO requests metering information of total consumption and may send power limitations in case of too high grid loads to the EMS via the gateway. This gateway must be compliant with country-specific DSO and grid protocol requirements (e.g. IEC 61850/OpenADR) and is representing the point of transfer of responsibility of the energy provider’s and end-user’s communication infrastructure. In the German case this would be the FNN control box or the Added Value Modul.

Time of Use Tariffs

With EEBUS, devices are able to receive and react upon dynamic tariffs. The tariff information is sent to the EMS, or directly to the device, which aligns the power consumption to the tariff information received. Depending on the end users’ preferences, the EMS offers energy to the controllable devices which calculate their overall power consumption schedules by taking advantage of their flexibility. By making the consumption schedule available to the EMS, the EEBUS system allows devices to choose the optimal time for power consumption or feed-in. This enables cost-optimised operation of the devices or revenue-optimised PV feed-in.

Market mechanism, such as dynamic tariffs, can continuously been applied, even in times of grid constraints given by the DSO.

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EVSE/EV

The EVSE/EV may be connected to an EMS (in case of two or more controllable devices) or directly to the gateway to dispatch the available energy to connected devices. The EV will choose the best price option according to its energy demand and provide its charging plan via the EVSE to the EMS.

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ESP/DSO

The Energy Provider may provide tariff information based on the electricity market price (e.g. EEX) to adjust the consumption to the availability of energy. The DSO can provide dynamic transmission fees as a preventive measure to avoid overload scenarios, by influencing the overall consumption or feed-in of buildings according to the grid situation.

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HVAC

The HVC device may be connected to an EMS (in case of two or more controllable devices) or directly to the gateway to dispatch the available power capacity to connected devices. g

The device will choose the best price option according to its energy demand and provide a consumption plan to the EMS.

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PV Inverter / Battery

The PV Inverter / Battery may be connected directly to a gateway or through an EMS, which allows for revenue-optimised PV feed-in.

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EMS

The EMS receives the tariff information through a gateway or cloud service and offers the energy through incentives table to the controllable devices. The devices will choose the best price option according to their energy demands and submit a consumption plan to the EMS.

tooltip text

White Good Device

The white good device will get a smart start signal from the EMS in case of low price of electricity.

Increase of Self Consumption

EEBUS enables devices to communicate their current and forecasted power consumption or production.  The EMS influences the power consumption of controllable devices as well as PV feed-in in such a way that all demands will be scheduled underneath the PV production curve. In presence of energy storage capability such as stationary battery system or bidirectional EV (BEV), PV over production may be stored temporarily to provide it to the building after sun set. During feed-in constraints, costless PV energy is available to even operate devices for free. The end user benefits from significantly reduced energy costs and improved ecological footprint.

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METER

The meter is providing the buildings’ total power consumption to the EMS to enable zero consumption or feed-in.

tooltip text

EVSE/EV/BATTERY

The EVSE/EV
provides its energy demand and departure time to the EMS. If the end user choses CO2 friendly charging, the EMS takes care about charging with high portion of PV energy. In case a bidirectional EV is attached, the EV’s battery may be discharged for home supply (V2H) if it is ensured that it will be charged up to the departure time according to the end users’s preferences.

The Battery
enables storage of PV energy to provide it to the building after sunset. Within its operating limits it is controlled by the EMS.

tooltip text

HVAC

The HVAC device submits its energy demand to the EMS. In case of the PV inverter is power curtailed by the grid the heat pump may run a C02 neutral domestic hot water (DHW) session for free.

tooltip text

PV Inverter / Battery

The PV inverter is the key element of the self-consumption solution and is considered to produce as much PV energy as possible. It’s used to supply the building’s demand and in case of PV over production to charge the stationary battery system or BEV.

tooltip text

EMS

The EMS knows about all energy demands including the base load of the building as well as the PV production forecast. From this the EMS derives the optimal operation schedules of the devices without loss of comfort. If there is a major change in energy production or demand the EMS will recalculate the operation schedules.

tooltip text

White Good Device

The white good device will receive a smart start information from the EMS according to the operation schedule calculated by the EMS.

Monitoring and Comfort

EEBUS enables devices to communicate their current consumption and or generation as well as a forecast of their energy behaviour. This enables an EMS or any kind of display to collect energy relevant information for end user interaction or provide them to smart home or home automation systems who take care of the end users’ comfort.

tooltip text

EVSE/EV

The EVSE/EV

The EVSE/EV provides its state of charge, power consumption and charging history report to the EMS.

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HVAC

The heat pump provides the power consumption to the EMS and adjusts temperature settings.

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PV Inverter

The PV inverter provides all relevant inverter data for end user visualisation.

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EMS

The EMS aggregates information for visualisation and parametrisation.

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Battery

The battery provides all relevant battery data for end user visualisation.

Research Projects

One of EEBUS’ main activities is its active contribution to research and development: the initiative participates in various national as well as international funded projects devoted to developing the energy landscape of the future. Requirements and results deriving from these projects are important sources of input for the development of the EEBUS standard and vice versa.

REnnovates
C/sells
Interconnect (EU)
Unit-e
Fit4echange
RESIGENT
ARNI - Living Lab Cologne

REnnovates (EU)

The largest European EEBUS implementation with over 240 residential buildings in the Netherlands. The EU lighthouse project “REnnovates” is a model for efficient plus-energy renovation throughout Europe. EEBUS enables manufacturer-independent energy management, paving the way for interaction with the Smart Grid.

REnnovates is only the beginning of the systematic and efficient renovation of existing building stock; it also holds great potential for new buildings throughout Europe. Further projects based on networked energy management and EEBUS are planned in the Benelux countries, Germany and Spain.

Project:
Completed

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C/- sells (Germany)

Various pilot installation to reduce buildings’ power consumption via Smart Meter Gateway (HAN/CLS interface) by power limitation set point from the DSO. EEBUS’s capacity management solution enables a control box or an energy manager to receive power limitation set points to power curtail electric vehicles or HVAC systems according to the customer preferences. Combined with monitoring of power consumption on building or device level hotsspots can be identified to avoid bottlenecks, so that cost-intensive grid expansion is not required in many cases.

Project:
Completed

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Interconnect (EU)

EEBUS is leading the use case definition to enable an interoperable bi-directional communication from grid to device level to enable new services to all involved stakeholders. New services e.g. load management on building level – consumption and production – or time of use tariffs for cost optimized operation of devices will be tested in several pilots in 7 diffrent EU countries. The german pilot will show real full chain interoperability including Smart Meter Gateways in residential and commercial places to enable the transition in energy supply, mobility and heating.

Locations:
The project places the foundation for the future of smart energy management solutions by seven connected large-scale test-sites in Portugal, Belgium, Germany, the Netherlands, Italy, Greece and France.

Project:
Ongoing

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Unit-e

How electromobility can be optimally integrated into the power grid is being investigated by the research project "unIT-e² - Reallabor für verNETZte E-Mobilität" in four field tests across Germany. To approach the complex topic from all sides at the same time, 29 partners from the automotive and energy industries, IT and charging infrastructure as well as science are participating in the joint project. The focus is on the user-friendly, large-scale implementation of bidirectional charging concepts. The three-year project is funded by the Federal Ministry for Economic Affairs And Climate Action (BMWK). Holistic solutions are being developed in the project for the further ramp-up of electromobility.

Test locations/sites:
Urban areas of Munich and Düsseldorf as well as rural based field tests in Eastern Bavaria, Lower Saxony, and Northern Hesse.

Working groups:
E-Mobility, HVAC, Inverter, Grid

Our Partners:

Fit4echange

The project focus lies on the increase of grid stability with a simultaneous ramp-up of e-mobility. Within Fit4echange, sensor and visualisation tools, allowing for increasing transparency in the current and prospected grid status, are to be developed as well as processes to inform the grid operator about an imminence grid congestion in advance. This information is necessary for the grid operator to react upon, i.e. by setting power limitations at the respective grid connection points via EEBUS communication.

Test locations/sites:
Duisburg region

Working groups:
E-Mobility, Grid

 

Our Partners:

RESIGENT

In the near future, several market participants with correlating interests and control demands will reach the smart building and it’s devices. A grid operator could send a power limitation to reduce the total power consumption, while an aggregator sends a price incentive to increase the power consumption. In RESIGENT a coordinating entity that prioritise the signals from all market participants before reaching the building is to be developed. Furthermore failsafe and blackstart mechanisms are to be tested to power up devices and systems after a power or communication blackout.

Test location/site:
Hassfurt region

Working Groups:
E-Mobility, Inverter, Grid,

Our Partners:

ARNi –Living Lab Cologne

The mission of the project is to develop test descriptions for all relevant interfaces (devices and systems). Living Lab enables practical testing (based on test descriptions) particularly at the interface to the Smart Meter Gateway.

Connectivity of all devices < 100kW (e.g. Redispatch 2.0; §14a…) has to be developed according to German law and regulations. The location offers the opportunity for sales and service training.

Kick-off in 2022.

Location:
Cologne

Working Groups:
E-Mobility, HVAC, Inverter, Grid, Commercial

 

Our Partners:

MANY COMPANIES ALREADY SPEAK EEBUS.