This INTERPLAN report tackles the approach developed within the INTERPLAN project for generating grid equivalents for different use cases. A first version of this report (D4.2) was released in September 2019, with the aim to introduce a general concept of generating grid equivalents alongside of a classification of the generated grid equivalents. 

Presently, no network operator has models of the entire physical grid covering different voltage levels and all neighbouring network operators. The detailed modelling of the whole power system requires a huge input data and complex structure, and this clearly contributes to the problem. So, the grid equivalents adequately representing the parts of European electricity systems are needed.

Indeed, the proposed methodology is needed to generate grid equivalents that will allow an accurate analysis of the complex network, by considering local active elements in the grid. Based on the developed INTERPLAN use cases (UCs), showcases (SCs) and requirements for network models and interfaces, the project provides grid-equivalents covering all voltage levels to be incorporated in the integrated operation planning tool and quasi-dynamic simulations environment. The developed grid equivalents were validated during the project runtime.

Hence, a validated set of grid equivalents will be shortly available to the public on our website.  Using appropriate grid equivalents for the distribution grid, the complexity of such investigations can be reduced significantly and can help distribution system operators (DSOs) to identify the optimal standard parametrization of small-scale distributed energy resources (DER).

Approach for generating grid equivalents for different use cases (Final version)
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