Partners collaborating in the Harmon-E cluster, which is part of the unIT-e² research project, developed the system
architecture for the upcoming clusters field trials1. The interactive system architecture
displayed below shows all use cases, which will be tested in the field. Shown are all relevant
stakeholders and technical components (without specification of a measurement concept). A
distinction is made between use cases concerning single family homes and multifamily
homes/workplaces and between different datatypes (e. g.
communication data, measurement data according to TAF, prices / price signals).
The
interactive representation of the system architecture allows individual use cases to be viewed
separately. Use cases can be activated by the
respective switches. Each use case can be displayed individually or in any combination with other
use cases. More detailed explanations can be found in the tables below.
If you have any questions about the system architecture, please do not hesitate to contact
our
experts.
If necessary, the DSO transmits Plim to the MPO as aEMP (GWA) via web
interface or similar.
Plim is send to single-family homes by the MPO as aEMP utilizing the SMGWs
transparent CLS proxy channel. Plim is forwarded to the HEMS via the HCU.
Plim is send to the single-family homes SMGW by die MPO via the encrypted TLS
channel (DIN VDE V 0418-63-8). The SMGW stores Plim and transfers it to the HEMS
via the EEBUS protocol.
Plim is sent to multi-family homes / workplaces by the MPO as aEMP via the
SMGWs transparent CLS proxy channel. Plim is forwarded to the HCU and
transferred to the charge management.
Plim is send to the multi-family homes / workplaces SMGW by die MPO via the
encrypted TLS channel (DIN VDE V 0418-63-8). The SMGW stores Plim and transfers
it to the charge management via the EEBUS protocol.
The aggregator transmits the redispatch signal to the aEMP, which opens a
transparent CLS channel through the SMGW to the HCU. The HCU transmits the
signal to the HEMS.
Alternative to 4a: The aggregator transmits the redispatch signal to the
single-family home HEMS via the supplementary communication channel (WAN 2).
The HEMS optimizes the tethered devices and transmits any control signals in
the device-specific protocol to ensure Plim compliance.
Use Case 1.1/1.2 and 1.3) The DSO informs the energy
supplier about a remote-control command. Use Case 2.1/2.2 and 2.3/2.4) The DSO informs the energy
supplier about a remote-control command and the energy supplier informs the DSO
about the dispatch of its flexibilities.
The aggregator transmits specific (flex) schedules to the charge management
system at the multi-family home/workplace.
Alternative to 7a: The aggregator (backend) transmits (flex) schedules (charge
control signal) to the EV via the OEM (backend).
The EVSE communicates (possibly via ISO 15118-X) with the EV. EV to EVSE:
specific vehicle data (SOC, charging restrictions), EVSE to EV: schedules.
The charge management system optimizes the tethered devices and transmits any
control signals in the device-specific protocol to ensure Plim compliance.
The charge management system optimizes the connected components and transmits
any control instructions in the system-specific protocol for compliance with
Plim.
Locally measured values are exchanged between the SMGW and the HEMS via the
HAN interface of the SMGW.
The energy supplier transmits electricity market prices to the
aggregator.
The aEMP transmits price tables (based on electricity market prices) through
the SMGW to the HCU of the home. The HCU transfers the price tables to the
HEMS.
The aggregator makes a request to the aEMP, which initiates the establishment of a
transparent CLS channel to the HCU.
Alternative to 13a) The energy supplier makes a request to the aEMT (MPO),
which initiates the establishment of a transparent CLS channel to the HCU.
The HEMS optimizes the schedules of the flexibilities based on the price table
and passes the calculated schedules to the corresponding flexibility.
The aggregator uses vehicle data, user charging requirements, and market
prices to develop optimized (flex) schedules of EVs at the multi-family
home/workplace.
The aggregator exchanges information on the availability and use of
flexibilities with the energy supplier.
The charging management takes into account other loads and controls the
charging of the flexibilities (EVs) with the aim of equalizing the power
consumptions and/or reducing the power peak.
The local charging management translates the (flex) schedules of the
aggregator into control commands for charging the vehicles and transmits them to
EVSE.
The HEMS optimizes the schedules of the flexibilities with the goal of peak
shaving (forecast-based) and passes on the calculated schedules to the
corresponding flexibility.
Information/signals on the use of redispatch are shared via the communication
interface (API) between TSO and, if applicable, DSO and CBP.
Flex availability information and redispatch deployment signals are shared
between the aggregator and CBP via the communication interface (API).
Relevant vehicle data is transmitted from the EV to the OEM's backend.
The load requests set in the app by the user are transmitted to the
aggregator's backend.
Relevant vehicle data is transmitted from the EV to the aggregator via the
OEM's backend.
Loading requests based on vehicle and user data are transmitted to the backend
of the HEMS (if necessary).
Requirements set by the user in the app are transmitted to the HEMS
backend.
EV requests and user requests are transmitted from the HEMS backend to the
HEMS.
Relevant measurement data (TAF 7/ 9/ 10/ 14) are transmitted to the MPO as
pEMP via SMGW at the home.
Relevant measurement data (TAF 7/ 9/ 10/ 14) are transmitted via SMGW at the
MFH/ workplace to the MPO as pEMP. This is a cluster-specific variant that has
no general validity.
Relevant measurement data (TAF 7) are transmitted by the MPO as pEMP to the
energy supplier.
Relevant measurement data (TAF 7/ 14) are transmitted by the MPO to the
aggregator as pEMP.
Relevant measurement data (TAF 9/ 10) are transmitted by the MPO to the DSO as
pEMP.
Measured value acquisition of the flexibilities via an mME and provision of
the data for SMGW and local control unit (HEMS/ charge control).
Relevant measurement data (15min input/output power, TAF 7) are transmitted by
the aggregator to CBP.
Relevant measurement data (15min feed-in/feed-out power, TAF 7) are
transmitted by the MPO as pEMP to CBP.
Relevant measurement data is transmitted from the charging management system
to the aggregator's backend.
