Advantages of digitalization in grid restoration

Author:

Wellßow W. H.1,Hinkel P.1,Zugck M.1,Dumas C.2,Hilgers S.2,Livrozet M.2,Mannebach A.2,Walter M.2,Picken C.2,Schneiders C.2,Görgen M.3,Waniek C.3

Affiliation:

1. Technische Universität Kaiserslautern , Kaiserslautern , Germany

2. Amprion GmbH , Dortmund , Germany

3. Westnetz GmbH , Dortmund , Germany

Abstract

Abstract In Germany, the installed capacity of renewables exceeds the maximum load by far and the transmission task has changed from high-wind locations in the north to the economically strong south. In addition, the system inertia is reduced due to the decommissioning of large power stations. This leads to a higher probability of blackouts and a challenging restoration process. Operation during restoration differs strongly from normal. Besides other effects, the grid frequency is very sensitive to active power imbalances. An accurate power forecast of re-supplied feeders is required to estimate dynamic frequency deviations. Models for cold load pick-up (CLPU) and fluctuating renewable energy sources (RES) infeed are presented. For the coordination between Transmission system operators (TSO) and Distribution system operators (DSO) a clear and structured process is proposed to minimize the communication effort. Power system restoration (PSR) simulations are carried out and the results are presented.

Publisher

Walter de Gruyter GmbH

Subject

Electrical and Electronic Engineering,Computer Science Applications,Control and Systems Engineering

Reference15 articles.

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