Interfaces

The enormous fragmentation of the generation and consumption plants requires permanent data exchange with a VPP with to-the-second precision to ensure that the VPP can analyse, assess and bundle the generation data of the systems with the aim of achieving profitable results for the operator along the value chain – optimised either in terms of the power price or in terms of revenues.

This requires state-of-the-art control technology on site. It is e.g. based on the precondition that the interfaces speak the language of the transmission system operators. The solution for this is called the “Transmission Code” – a set of rules and regulations containing technical access conditions for control energy types, e.g. for participation in the German power market. Moreover, another precondition is that the decentralised energy systems are connected to the VPP in a bi-directional and web-supported manner and that, as a result, they can also be controlled remotely.

The state-of-the-art control and communications systems permit participation in all common control energy markets, the decentralised archiving of data and LTE data transmission as well as decentralised schedule operation. Combined with the possibility of continuous adjustment between the VPP and the control unit, this permits optimised intraday trading.

In this context, the aspect that we operate according to the principle of “signals instead of interventions” is decisive. The primary function of the technical unit or the superior control system always takes priority. Restrictions in terms of remote controllability as well as the admissible signals and call bandwidths should be coordinated with the plant operator.