What is a Telecontrol Connection for?
Decentralized generation systems and customer transfer stations that link directly to a grid operator’s medium-voltage network need to be connected via telecontrol technology. This is necessary for two reasons above all:
- For grid operation:
This requires transmitting signals, data and/or messages, such as position reports on the medium-voltage switchgear, warning and error messages about the system and the equipment to protect the grid, feedback about system availability, measured operational values at the grid connection point and information about the control of the supply of reactive power. - For feed-in management per §9 of the German Renewable Energies Act EEG:
Here the telecontrol connection is used with generation plants and storage systems in order to transfer the setpoints for reactive power feed-in (including feedback) and the measured values for recording the actual output.
The implementation of both grid operation and feed-in management needs to be combined into one telecontrol device. Through so-called grid guidelines, specifications and technical connection rules (TCRs), grid operators set their specific requirements on the telecontrol connection of customer transfer stations in medium-voltage grids.
For medium voltage, the distribution grid operator provides a gateway that makes the required signals available at a communication interface, and these gateways may differ. For example, Westnetz provides an IP-based interface (IEC 60870-15-104), while a serial protocol (IEC 60870-5-101) is provided for the telecontrol connection to e.on’s medium-voltage grids.
These interfaces then represent the property boundary between the grid operator and customer. On the customer side, corresponding telecontrol technology must be deployed to provide the required signals.
Grid Territories
Complete solutions are available from WAGO for customer transfer stations for the following territories:
- Avacon Netz GmbH
- Bayernwerk Netz GmbH
- E.DIS Netz GmbH
- HanseWerk AG (including the grid operator of the HanseWerk Group)
- Netze BW
- EWE
- Westnetz
- WEMAG
- Thüringer Energienetze
- Vorarlberger Energienetze GmbH
Is your grid territory is not listed?
WAGO can also simplify the telecontrol connection of generation systems, storage systems and load customers to the medium-voltage grids of other supply territories in accordance with VDE-AR-N 4110.
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