Aggregated Modeling and Power Hardware-in-the-Loop Emulation of Grid Impedance

Henrik Alenius; Tuomas Messo; Tommi Reinikka; Tomi Roinila

doi:10.1109/ECCE.2018.8557864

Aggregated Modeling and Power Hardware-in-the-Loop Emulation of Grid Impedance

Henrik Alenius
, Tuomas Messo
, Tommi Reinikka
, Tomi Roinila

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

8 Citations (Scopus)

39 Downloads (Pure)

Abstract

The rapid growth of renewable energy production increases the number of grid-connected inverters in the power system. The interface between the inverter and the grid may face stability issues, which can be assessed using impedance-based stability criterion. The frequency-dependent grid impedance is often an unknown parameter, and vastly simplified grid impedance models are widely used. Most common modeling approach is to use series-connected inductor as the grid impedance. However, measurements on real grids have shown the grid to be more complex, resonant, and time-variant. This paper introduces a grid-impedance model based on aggregation of sub-models, which drastically simplifies complex grid modeling, while still accurately captures resonances and possible time-variant behavior. Numerical sensitivity analysis is carried out for grid parameters to illustrate the significance of separate grid elements. Lastly, impedance measurements are shown for emulated full-order and aggregated impedance models in an experimental power hardware-in-the-loop setup.

Original language	English
Title of host publication	The 10th Annual IEEE Energy Conversion Congress and Exposition (ECCE 2018)
Subtitle of host publication	September 23-27, 2018, Portland, Oregon, USA
Publisher	IEEE
Pages	4179-4186
Number of pages	8
ISBN (Electronic)	978-1-4799-7312-5
DOIs	https://doi.org/10.1109/ECCE.2018.8557864
Publication status	Published - 6 Dec 2018
Publication type	A4 Article in conference proceedings
Event	IEEE Energy Conversion Congress and Exposition - Portland, United States Duration: 23 Sept 2018 → 27 Sept 2018

Publication series

Name
ISSN (Electronic)	2329-3748

Conference

Conference	IEEE Energy Conversion Congress and Exposition
Country/Territory	United States
City	Portland
Period	23/09/18 → 27/09/18

UN SDGs

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

SDG 7 Affordable and Clean Energy

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Publication forum level 1

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10.1109/ECCE.2018.8557864

Aggregated Modeling and Power Hardware-in-the-Loop Emulation of Grid Impedance
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Accepted author manuscript, 1.22 MB

http://urn.fi/URN:NBN:fi:tty-201907151957

Cite this

@inproceedings{878d5bc79e1f48bdbab3851f6840c2b0,

title = "Aggregated Modeling and Power Hardware-in-the-Loop Emulation of Grid Impedance",

abstract = "The rapid growth of renewable energy production increases the number of grid-connected inverters in the power system. The interface between the inverter and the grid may face stability issues, which can be assessed using impedance-based stability criterion. The frequency-dependent grid impedance is often an unknown parameter, and vastly simplified grid impedance models are widely used. Most common modeling approach is to use series-connected inductor as the grid impedance. However, measurements on real grids have shown the grid to be more complex, resonant, and time-variant. This paper introduces a grid-impedance model based on aggregation of sub-models, which drastically simplifies complex grid modeling, while still accurately captures resonances and possible time-variant behavior. Numerical sensitivity analysis is carried out for grid parameters to illustrate the significance of separate grid elements. Lastly, impedance measurements are shown for emulated full-order and aggregated impedance models in an experimental power hardware-in-the-loop setup.",

author = "Henrik Alenius and Tuomas Messo and Tommi Reinikka and Tomi Roinila",

note = "jufoid=57394; IEEE Energy Conversion Congress and Exposition ; Conference date: 23-09-2018 Through 27-09-2018",

year = "2018",

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doi = "10.1109/ECCE.2018.8557864",

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Alenius, H, Messo, T, Reinikka, T & Roinila, T 2018, Aggregated Modeling and Power Hardware-in-the-Loop Emulation of Grid Impedance. in The 10th Annual IEEE Energy Conversion Congress and Exposition (ECCE 2018): September 23-27, 2018, Portland, Oregon, USA. IEEE, pp. 4179-4186, IEEE Energy Conversion Congress and Exposition, Portland, United States, 23/09/18. https://doi.org/10.1109/ECCE.2018.8557864

Aggregated Modeling and Power Hardware-in-the-Loop Emulation of Grid Impedance. / Alenius, Henrik; Messo, Tuomas; Reinikka, Tommi et al.
The 10th Annual IEEE Energy Conversion Congress and Exposition (ECCE 2018): September 23-27, 2018, Portland, Oregon, USA. IEEE, 2018. p. 4179-4186.

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

TY - GEN

T1 - Aggregated Modeling and Power Hardware-in-the-Loop Emulation of Grid Impedance

AU - Alenius, Henrik

AU - Messo, Tuomas

AU - Reinikka, Tommi

AU - Roinila, Tomi

N1 - jufoid=57394

PY - 2018/12/6

Y1 - 2018/12/6

N2 - The rapid growth of renewable energy production increases the number of grid-connected inverters in the power system. The interface between the inverter and the grid may face stability issues, which can be assessed using impedance-based stability criterion. The frequency-dependent grid impedance is often an unknown parameter, and vastly simplified grid impedance models are widely used. Most common modeling approach is to use series-connected inductor as the grid impedance. However, measurements on real grids have shown the grid to be more complex, resonant, and time-variant. This paper introduces a grid-impedance model based on aggregation of sub-models, which drastically simplifies complex grid modeling, while still accurately captures resonances and possible time-variant behavior. Numerical sensitivity analysis is carried out for grid parameters to illustrate the significance of separate grid elements. Lastly, impedance measurements are shown for emulated full-order and aggregated impedance models in an experimental power hardware-in-the-loop setup.

AB - The rapid growth of renewable energy production increases the number of grid-connected inverters in the power system. The interface between the inverter and the grid may face stability issues, which can be assessed using impedance-based stability criterion. The frequency-dependent grid impedance is often an unknown parameter, and vastly simplified grid impedance models are widely used. Most common modeling approach is to use series-connected inductor as the grid impedance. However, measurements on real grids have shown the grid to be more complex, resonant, and time-variant. This paper introduces a grid-impedance model based on aggregation of sub-models, which drastically simplifies complex grid modeling, while still accurately captures resonances and possible time-variant behavior. Numerical sensitivity analysis is carried out for grid parameters to illustrate the significance of separate grid elements. Lastly, impedance measurements are shown for emulated full-order and aggregated impedance models in an experimental power hardware-in-the-loop setup.

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ER -

Aggregated Modeling and Power Hardware-in-the-Loop Emulation of Grid Impedance

Abstract

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