Investigation of the interaction between peak capping and usable ampacities of overhead lines for system planning purposes

Conference: International ETG Congress 2017 - International ETG Congress 2017
11/28/2017 - 11/29/2017 at Bonn, Deutschland

Proceedings: ETG-Fb. 155: International ETG Congress 2017

Pages: 6Language: englishTyp: PDF

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Puffer, Ralf; Schmiesing, Johannes; Wenzlaff, Wencke (Avacon AG, Germany)

Peak capping of renewable energy sources (wind and photo voltaic) is a measure that can be used in Germany within the network planning process by law since 2016. It refers to the reduction of the forecasted yearly input of electrical work from wind turbines and photovoltaic systems up to 3%. In regions where the load flow on overhead lines is mainly dominated by input from wind turbines dynamic ratings of the overhead lines’ ampacities are used by many system operators. Dynamic ratings can be taken into account for network planning purposes as well. The interaction within the network planning process between the use of peak capping and dynamic ampacity ratings was investigated and is described in this paper. It can be concluded that the ampacity usable for network planning purposes significantly reduces when peak capping and dynamic ampacity ratings are used at the same time. Network planners can use these results to determine the necessary network expansion measures with or without peak capping.