Geomagnetically induced currents: A measurement based inverse determination of earth impedances

Philipp Schachinger; Dennis Albert; Herwig Renner

doi:10.1109/UPEC50034.2021.9548157

Geomagnetically induced currents: A measurement based inverse determination of earth impedances

Philipp Schachinger, Dennis Albert, Herwig Renner

Institute of Electrical Power Systems (4320)

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

Abstract

Geomagnetically induced currents (GIC) can lead to serious disturbances in transmission grids. Arising problems range from high noise levels and reactive power consumption of transformers up to transformer outages and regional blackouts. To mitigate GICs effectively, simulation is an important aspect. However, incomplete electrical grid data in combination with discrete earth layer models lead to differences between measurement and simulation. In this article, we describe an inverse calculation method of the complex earth impedance, based on transformer neutral point measurements. We show that the resulting model leads to higher simulation accuracy. This calculation method may be used especially when earth layer data is missing or inaccurate.

Original language	English
Title of host publication	2021 56th International Universities Power Engineering Conference (UPEC)
Subtitle of host publication	Powering Net Zero Emissions, UPEC 2021 - Proceedings
Number of pages	5
ISBN (Electronic)	978-1-6654-4389-0
DOIs	https://doi.org/10.1109/UPEC50034.2021.9548157
Publication status	Published - 31 Aug 2021
Event	56th International Universities Power Engineering Conference: POWERING NET ZERO EMISSIONS POWERING NET ZERO EMISSIONS - Virtuell, United Kingdom Duration: 31 Aug 2021 → 3 Sept 2021 https://upec2021.tees.ac.uk/

Conference

Conference	56th International Universities Power Engineering Conference
Abbreviated title	UPEC 2021
Country/Territory	United Kingdom
City	Virtuell
Period	31/08/21 → 3/09/21
Internet address	https://upec2021.tees.ac.uk/

Keywords

Earth impedance
GIC
Measurement
Simulation

ASJC Scopus subject areas

Geotechnical Engineering and Engineering Geology
Electrical and Electronic Engineering
Control and Optimization
Energy Engineering and Power Technology
Renewable Energy, Sustainability and the Environment

Fields of Expertise

Sustainable Systems

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1109/UPEC50034.2021.9548157

Cite this

Geomagnetically induced currents: A measurement based inverse determination of earth impedances. / Schachinger, Philipp ; Albert, Dennis ; Renner, Herwig.
2021 56th International Universities Power Engineering Conference (UPEC): Powering Net Zero Emissions, UPEC 2021 - Proceedings. 2021.

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

Schachinger, P , Albert, D & Renner, H 2021, Geomagnetically induced currents: A measurement based inverse determination of earth impedances. in 2021 56th International Universities Power Engineering Conference (UPEC): Powering Net Zero Emissions, UPEC 2021 - Proceedings. 56th International Universities Power Engineering Conference, Virtuell, United Kingdom, 31/08/21. https://doi.org/10.1109/UPEC50034.2021.9548157

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abstract = "Geomagnetically induced currents (GIC) can lead to serious disturbances in transmission grids. Arising problems range from high noise levels and reactive power consumption of transformers up to transformer outages and regional blackouts. To mitigate GICs effectively, simulation is an important aspect. However, incomplete electrical grid data in combination with discrete earth layer models lead to differences between measurement and simulation. In this article, we describe an inverse calculation method of the complex earth impedance, based on transformer neutral point measurements. We show that the resulting model leads to higher simulation accuracy. This calculation method may be used especially when earth layer data is missing or inaccurate.",

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AU - Albert, Dennis

AU - Renner, Herwig

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N2 - Geomagnetically induced currents (GIC) can lead to serious disturbances in transmission grids. Arising problems range from high noise levels and reactive power consumption of transformers up to transformer outages and regional blackouts. To mitigate GICs effectively, simulation is an important aspect. However, incomplete electrical grid data in combination with discrete earth layer models lead to differences between measurement and simulation. In this article, we describe an inverse calculation method of the complex earth impedance, based on transformer neutral point measurements. We show that the resulting model leads to higher simulation accuracy. This calculation method may be used especially when earth layer data is missing or inaccurate.

AB - Geomagnetically induced currents (GIC) can lead to serious disturbances in transmission grids. Arising problems range from high noise levels and reactive power consumption of transformers up to transformer outages and regional blackouts. To mitigate GICs effectively, simulation is an important aspect. However, incomplete electrical grid data in combination with discrete earth layer models lead to differences between measurement and simulation. In this article, we describe an inverse calculation method of the complex earth impedance, based on transformer neutral point measurements. We show that the resulting model leads to higher simulation accuracy. This calculation method may be used especially when earth layer data is missing or inaccurate.

KW - GIC

KW - simulation

KW - measurement

KW - earth impedance

KW - Earth impedance

KW - GIC

KW - Measurement

KW - Simulation

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DO - 10.1109/UPEC50034.2021.9548157

M3 - Conference paper

BT - 2021 56th International Universities Power Engineering Conference (UPEC)

T2 - 56th International Universities Power Engineering Conference

Y2 - 31 August 2021 through 3 September 2021

ER -

Geomagnetically induced currents: A measurement based inverse determination of earth impedances

Abstract

Conference

Keywords

ASJC Scopus subject areas

Fields of Expertise

UN SDGs

Access to Document

Other files and links

Fingerprint

Nf-Sternpunkt 2 - Low-frequency transformer neutral currents

56th International Universities Power Engineering Conference (Event)

56th International Universities Power Engineering Conference