Decentralized generation systems and customer transfer stations that connect directly to a network operator's grid are to be connected via telecontrol technology. This is needed primarily for two reasons:
- To support network operations:
This requires transmitting signals, data and/or messages; e.g., position reports over the medium-voltage switchgear, warning and error messages about the system and the equipment to protect the grid, feedback about system availability, operation measured values at the network connection point and information about control of the reactive energy. - For feed-in management per §9 EEG:
The connection point used here is the one the telecontrol technology connection uses for generation plants and storage facilities, so the prescribed setpoints for the reactive power supply (including response) and the measurement values for recording the actual output can be transferred.
Both tasks – network operation purposes and feed-in management are to be implemented as combined in one telecontrol technology facility. The network operators regulate their respective requirements to the telecontrol technology connection of customer transfer stations to medium-voltage grids in what are referred to as grid guidelines, specifications and technical connection requirements (TABs).
For medium voltage, the distribution network operator provides a gateway that makes the required signal scope available at the communication interface – and these may be different:
Westnetz, for example, provides an IP-based interface (IEC 60870-15-104); while a serial protocol (IEC 60870-5-101) was provided for the telecontrol technology connection to the medium voltage networks from e.on.
These interfaces then comprise the boundaries between the respective properties of the network operator and customer. On the customer side, then a corresponding telecontrol technology that can provides the required signal scope should be deployed.
Network Areas
Complete solutions for customer transfer stations for the following territories:
- Avacon Netz GmbH
- Bayernwerk Netz GmbH
- E.DIS Netz GmbH
- HanseWerk AG (including network operator of the HanseWerk Group)
- Netze BW
- EWE
- Westnetz
Your network area is not among them?
The telecontrol technology connection of generation plants, storage facilities and load customers to the medium-voltage networks from other supply areas per VDE-AR-N 4110.
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