Assessing the Severity of Voltage Sags Due to Short Circuits in Transmission and Distribution Grids

Norbert Essl; Herwig Renner

doi:10.1109/ICHQP.2016.7783442

Assessing the Severity of Voltage Sags Due to Short Circuits in Transmission and Distribution Grids

Norbert Essl, Herwig Renner

Institute of Electrical Power Systems (4320)

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

Abstract

Grid codes require power plants to stay connected during grid disturbances. Power generation units have to withstand voltage disturbances with very low remaining voltages at their terminals or point of common connection (PCC). The capability of power generation units to withstand a defined voltage-against-time-profile is specified by so called low-voltage-ride-through-(LVRT)-requirements. Typical are LVRT-profiles with remaining voltages around u=0.05 pu for a fault event duration in the range of 150-250 ms. This paper investigates the propagation of voltage sags through different voltage levels in a Central European power grid and the likelihood of such low voltages, as given by voltage-against-time-curves in grid codes. It is not intended to make statements about the LVRT-capability of power generation units in this paper. Simulations are performed on an actual power grid with real load flow data in the power systems analysis software DIgSILENT PowerFactory. Fault statistics are given for the analyzed power grid to provide a rough estimate about the probability of different types of faults and fault events in general.

Original language	English
Title of host publication	Proceedings of 2016 17th International Conference on Harmonics and Quality of Power (ICHQP)
Publisher	Institute of Electrical and Electronics Engineers
Number of pages	5
ISBN (Electronic)	978-1-5090-3792-6
DOIs	https://doi.org/10.1109/ICHQP.2016.7783442
Publication status	Published - 2016
Event	17th International Conference on Harmonics and Quality of Power : ICHQP 2016 - Ouro Minas Palace Hotel, Belo Horizonte, Brazil Duration: 16 Oct 2016 → 19 Oct 2016 Conference number: 17 http://www.ichqp2016.org

Conference

Conference	17th International Conference on Harmonics and Quality of Power
Abbreviated title	ICHQP 2016
Country/Territory	Brazil
City	Belo Horizonte
Period	16/10/16 → 19/10/16
Internet address	http://www.ichqp2016.org

Access to Document

10.1109/ICHQP.2016.7783442

Cite this

Assessing the Severity of Voltage Sags Due to Short Circuits in Transmission and Distribution Grids. / Essl, Norbert; Renner, Herwig.
Proceedings of 2016 17th International Conference on Harmonics and Quality of Power (ICHQP). Institute of Electrical and Electronics Engineers, 2016.

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

Essl, N & Renner, H 2016, Assessing the Severity of Voltage Sags Due to Short Circuits in Transmission and Distribution Grids. in Proceedings of 2016 17th International Conference on Harmonics and Quality of Power (ICHQP). Institute of Electrical and Electronics Engineers, 17th International Conference on Harmonics and Quality of Power , Belo Horizonte, Brazil, 16/10/16. https://doi.org/10.1109/ICHQP.2016.7783442

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