In the last post, we reported on how the new voltage setpoints in combination with the adjustable local network transformers can solve the voltage problems and reduce the need for network expansion.
To further reduce the need for expansion, our next step was to investigate the use of so-called medium-voltage longitudinal regulators. It turned out that by using them, only about 1% of the entire cable and overhead line route would have to be replaced and at the same time the voltage problems could be solved.
The low replacement requirement reduces investment costs by about two-thirds compared with the approach presented yesterday. Thus, this option is not only technically but also economically the optimal solution for the grid operator.
A conclusion and further details on the technology will be available tomorrow.