Model-based optimization process for the automated analysis, evaluation and adjustment of protection coordination

Conference: NEIS 2020 - Conference on Sustainable Energy Supply and Energy Storage Systems
09/14/2020 - 09/15/2020 at Hamburg, Deutschland

Proceedings: NEIS 2020

Pages: 6Language: englishTyp: PDF

Albert, Markus (VSE Verteilnetz GmbH, Saarbrücken, Germany)
Schegner, Peter (Technical University Dresden, Dresden, Germany)
Igel, Michael (University of Applied Sciences Saarbrücken, Saarbrücken, Germany)

The advancement of the energy transition causes new challenges for distribution system operators. The integration of decentralized generation plants is steadily increasing the number of intermediate- and counter-feeds in medium- and high-voltage grids. In addition, an increasing number of operational-related switching status changes, grid expansion and volatile feed-in behavior is to be expected. Therefore distribution system operators must continuously verify and evaluate the basic requirements for protection concepts: selectivity, speed and reliability. Regarding the increasing complexity and number of different grid scenarios new and innovative procedures must be used to evaluate the protection coordination. This article presents a novel, deterministic optimization process for the automated protection coordination. General requirements provide the design and specification of a generic model for protection devices. This now called model-based process makes it possible to consider also user specific requirements. Therefore the substeps of the model-based process called initial protection coordination, assessment and adjustment are applicable for any grid scenario. The model-based process also provide the detection of non-selective tripping behavior.