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 * VPP »
 * Virtual Power Plant




VIRTUAL POWER PLANT


HOW TO NETWORK DISTRIBUTED ENERGY RESOURCES




A Virtual Power Plant (VPP) is a network of decentralized, medium-scale power
generating units such as wind farms, solar parks, and Combined Heat and Power
(CHP) units, as well as flexible power consumers and storage systems. Learn more
about the purpose of this network and the technology that powers our VPP.

Get in touch




WHAT IS THE OBJECTIVE OF A VIRTUAL POWER PLANT?

Depending on the particular market environment, VPPs can accomplish a whole
range of tasks. In general, the objective is to network distributed energy
resources in order to monitor, forecast, optimize and trade their power. This
way, fluctuations in the generation of renewables can be balanced by ramping up
and down power generation and power consumption of controllable units. But the
VPP not only helps stabilizing the power grids. It also creates the
preconditions for integrating renewable energies into the markets. Individual
small plants can in general not provide balancing services or offer their
flexibility on the power exchanges. This is because their generation profile
varies too strongly or they simply do not meet the minimum bid size of the
markets. By aggregating the power of several units, a VPP can deliver the same
service and redundancy and subsequently trade on the same markets as large
central power plants or industrial consumers.






CONTROL SYSTEM: HIGH-PERFORMANCE DATA PROCESSING

The control system is the technological core of the Virtual Power Plant. All
assets, that are networked in the VPP, can be efficiently monitored, coordinated
and controlled by the central control system. Control commands and data are
transmitted via secured data connections which are shielded from other data
traffic due to encryption protocols. The control system stores all the data
needed to calculate the optimal operation schedules for electricity producers
and consumers. These are for example:

 * Actual power
 * Readiness of the power plant or the power consumer
 * Performance range for balancing energy
 * Gas or heat storage
 * Actual temperature (for example in a cold store)
 * Water levels (for example for an industrial pump)

In addition to operating every individual asset in the VPP along an optimized
schedule, the central control system uses a special algorithm to adjust to
balancing reserve commands from transmission system operators, just as larger
conventional power plants do. The bidirectional data exchange between the
individual plants and the VPP not only enables the transmission of control
commands. It also provides real-time data on the capacity utilization of the
networked units. For example, the feed-in of wind energy and solar plants, as
well as consumption data and electricity storage charge levels, can be used to
generate precise forecasts for electricity trading and scheduling of the
controllable power plants.




NEXT BOX: SECURE CONNECTION TO THE VPP

The Next Box is a remote control unit, that allows to connect decentralized
power producers and consumers to the control system of the VPP. The Next Box
connects the plants via a bidirectional, specially secured (tunneld) wireless
connection by using the IEC 60870-5-104 telecontrol protocol. The connection is
established via a SIM card and has its own access point to the mobile network
(APN). At this access point, each SIM card installed in a Next Box must
authenticate itself to join the closed user group for communication with the
control system.



The basic configuration of the Next Box consists of three elements:

 * PLC (Programmable Logic Controller): A small computer, which processes and
   encrypts the raw operating data of the installation.
 * Modem: Provides a communications link between the remote unit and the control
   system.
 * Antenna: Amplifies the signal reception and can be located up to 15 m from
   the Next Box if necessary, for example, on the roof of a building.

If the Next Box is installed on site, the plant becomes part of the Virtual
Power Plant. It can now send all the data that forms the basis for calculating
the optimum way it should be operated directly to our control system. Even
though we are able to control the networked units via the Next Box, the
individual units remain independently owned and operated.


OUR VPP

We operate one of Europe's largest VPPs.

Be part of it



YOUR VPP

Create your own VPP with our Software as a Service.

Learn more



NEWSLETTER

Get the latest news from our VPP and the energy industry.

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