The following brief description of the contract is for the sole purpose of informing the bidders, subject to change. For the bidding phase, the contract documents and other documents made available to the bidders in the course of the award procedure are decisive.
In the electricity distribution grid, decentralised generation plants as well as sig-nificant loads are increasingly being registered and set up. In order to ensure grid stability, it is necessary to carry out a grid calculation before connection. Due to the high volume of connection requests, this process of network evaluation must be automated to a high degree. The software can assign the connection requests to a nearest network connection point based on address data or coordinates. At this point, a network calculation is carried out and the results are examined for limit value violations. A corresponding documentation of the calculation results must be created and archived automatically. In the event of a positive calculation, the requesting system is given back the confirmation that the network evaluation is in order.
If an automatic network calculation does not provide a valid result or if no unambiguous network connection point can be determined, it must be possible to check it accordingly in a manual network calculation. Here, the user is supported by an integrated variant comparison of different connection variants. A corresponding network expansion can also be planned and calculated there.
As a further component, the software offers the possibility of providing a self-disclosure for those willing to connect. This can be integrated directly into the website. Here, the customer can be given a non-binding network connection point in a map-based representation.
The grid calculation can be carried out in both the low- and medium-voltage grids. EWE NETZ operates around 180 substations and 16,000 substations. In addition, 20,700 km of medium-voltage and 64,400 km of low-voltage grid. We expect around 150,000 connection requests (decentralised feeders, wallboxes, heat pumps and new grid connections) per year.
The following brief description of the contract is for the sole purpose of informing the bidders, subject to change. For the bidding phase, the contract documents and other documents made available to the bidders in the course of the award procedure are decisive.
In the electricity distribution grid, decentralised generation plants as well as sig-nificant loads are increasingly being registered and set up. In order to ensure grid stability, it is necessary to carry out a grid calculation before connection. Due to the high volume of connection requests, this process of network evaluation must be automated to a high degree. The software can assign the connection requests to a nearest network connection point based on address data or coordinates. At this point, a network calculation is carried out and the results are examined for limit value violations. A corresponding documentation of the calculation results must be created and archived automatically. In the event of a positive calculation, the requesting system is given back the confirmation that the network evaluation is in order.
If an automatic network calculation does not provide a valid result or if no unambiguous network connection point can be determined, it must be possible to check it accordingly in a manual network calculation. Here, the user is supported by an integrated variant comparison of different connection variants. A corresponding network expansion can also be planned and calculated there.
As a further component, the software offers the possibility of providing a self-disclosure for those willing to connect. This can be integrated directly into the website. Here, the customer can be given a non-binding network connection point in a map-based representation.
The grid calculation can be carried out in both the low- and medium-voltage grids. EWE NETZ operates around 180 substations and 16,000 substations. In addition, 20,700 km of medium-voltage and 64,400 km of low-voltage grid. We expect around 150,000 connection requests (decentralised feeders, wallboxes, heat pumps and new grid connections) per year.
Description of the network model
EWE NETZ already has a topologically complete grid model for both low and medium voltage. This will be available in a database in the future. However, corresponding interfaces have not yet been finalized.
The following points are already integrated into the network model:
-Transformers
the Betriebsmitteldaten
the Schalterstellung
o If applicable, information as to whether the transformer has voltage regulation
o If applicable, information on an existing power composite
o If applicable, setpoint voltage
-Pilotages
o Corresponding equipment data is included
o Cross-section
- Switching stations in medium voltage
- Cable distribution cabinets in low voltage
- Einspeiser
the Anlagentyp
the Blindleistungseinstellung
o Unambiguous assignment to a connection object
o Unique feeder number
o Installed active power
o Plant status (in operation, in planning, ...)
-Children
o Projected annual consumption of each customer
o Unambiguous assignment to a connection object
o Significant loads are separated from the installed capacity
(wallboxes, heat pumps, etc.)
- Each piece of equipment has a unique identifier
- Schalterstellungen
- Geographical assignments of equipment
- Necessary information on the upstream 110 kV grid