Harmonic Resonance Analysis for Various Degrees of Cable Penetration in Transmission Grids

authored by

Alexander Neufeld, Nils Schäkel, Lutz Hofmann

Abstract

The ongoing and increasing build-up of renewable energy generation and the resulting reinforcement and extension of the German onshore electric transmission grid initiated a discussion about installing cables instead of overhead lines. As there is no extensive knowledge about the operation of transmission grids with a high degree of cable penetration, this development is investigated. Exchanging overhead lines or grid expansion with cables has a much higher effect on the resonance frequencies of the power system than overhead lines. This is caused by the cables' significantly higher capacitive behaviour. Those frequencies and their intensities in the electrical grid are calculated with the resonance mode analysis. This study analyses the change of the power systems behaviour for the varying shares of cables in a test grid and in a section of the German 380 kV extra high voltage transmission grid. The parallel resonance frequencies are mainly shifting towards lower frequencies as a larger percentage of cables is introduced into the system.

Organisation(s)

Electric Power Engineering Section
Institute of Electric Power Systems

Type

Conference contribution

Pages

1-5

No. of pages

5

Publication date

20.11.2018

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Safety, Risk, Reliability and Quality, Energy Engineering and Power Technology, Electrical and Electronic Engineering, Computer Networks and Communications, Renewable Energy, Sustainability and the Environment

Sustainable Development Goals

SDG 7 - Affordable and Clean Energy

Electronic version(s)

https://doi.org/10.1109/upec.2018.8541878 (Access: Closed)