VDE Study Recommends Limited Dynamic Support of New Power Plants Connected to Low Voltage Level in Case of Voltage Drop

A study commissioned by the Association for Electrical, Electronic and Information Technologies (VDE) recommends that new power plants connected to the low voltage level shall be able to provide limited dynamic support for the grids, remaining connected in case of short voltage drops (typically with a duration of approximately 100 milliseconds) to stabilise the grids.

The study examines the effects of such voltage drops in the transmission grids in 2022 on decentralised power plants, i.e. at a time when the installed capacity of renewable power plants will presumably have increased by 40%. The study carried out by scientists of the Technical University of Delft is based on a simulation model of 12,500 low-voltage grids and about 950 power plants. It shows that a drop of about 1,400 MW could be reduced by 50% if power plants provided limited dynamic support, VDE says.

The study is the first of four studies in total with which VDE wants to identify future requirements for power plants connected to the transmission and distribution grids. Results for the other studies can be expected in 2015, according to VDE.

Source: VDE

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