Details
| Original language | English |
|---|---|
| Title of host publication | 7th International Hybrid Power Plants & Systems Workshop (HYB23) |
| Pages | 30-36 |
| Number of pages | 7 |
| ISBN (electronic) | 978-1-83953-909-1 |
| Publication status | Published - 2023 |
| Event | 7th International Hybrid Power Plants & Systems Workshop - Tórshavn, Faroe Islands Duration: 22 May 2023 → 25 May 2023 |
Publication series
| Name | IET Conference Proceedings |
|---|
Abstract
By using an external signal for the synchronisation, an island grid with grid-forming inverters (GFMs) can be operated at a constant frequency. The global positioning system (GPS) provides a periodic pulse with a suitable accuracy. This is used to define the grid frequency and a reference for the voltage phase angle. A digital counter in the control hardware determines the phase angle. The counter is reset by each pulse of the GPS. An active power-angle droop control leads to partial power sharing between the GFMs and reduces distortions caused by non-ideal synchronisation. Furthermore, the grid operator can adjust the voltage reference phasors of the GFMs to control the power flow in the grid. An island grid with two GFMs and a hydro power plant is studied in simulations. The investigated power system is an altered and simplified grid model of Suðuroy, in the Faroe Islands. The effects of a load connection and a distorted GPS synchronisation are studied. Stable operation of the power system using the fixed-frequency approach is demonstrated.
Keywords
- ACTIVE POWER-ANGLE DROOP, FIXED-FREQUENCY OPERATION, GPS-BASED SYNCHRONISATION, GRID-FORMING INVERTERS, ISLAND POWER SYSTEM
ASJC Scopus subject areas
- Engineering(all)
- General Engineering
Sustainable Development Goals
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7th International Hybrid Power Plants & Systems Workshop (HYB23). 2023. p. 30-36 (IET Conference Proceedings).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research
}
TY - GEN
T1 - Fixed-Frequency Operation of an Island Grid with Multiple Grid-Forming Inverters and GPS-Based Synchronisation
AU - Strunk, R.
AU - Reus, L.
AU - Hofmann, L.
AU - Mertens, A.
N1 - Funding Information: This work was supported by the Federal Ministry for Economic Affairs and Climate Action on the basis of a decision by the German Bundestag. Project Inselnetz_optimal funding number: 03EI4033B
PY - 2023
Y1 - 2023
N2 - By using an external signal for the synchronisation, an island grid with grid-forming inverters (GFMs) can be operated at a constant frequency. The global positioning system (GPS) provides a periodic pulse with a suitable accuracy. This is used to define the grid frequency and a reference for the voltage phase angle. A digital counter in the control hardware determines the phase angle. The counter is reset by each pulse of the GPS. An active power-angle droop control leads to partial power sharing between the GFMs and reduces distortions caused by non-ideal synchronisation. Furthermore, the grid operator can adjust the voltage reference phasors of the GFMs to control the power flow in the grid. An island grid with two GFMs and a hydro power plant is studied in simulations. The investigated power system is an altered and simplified grid model of Suðuroy, in the Faroe Islands. The effects of a load connection and a distorted GPS synchronisation are studied. Stable operation of the power system using the fixed-frequency approach is demonstrated.
AB - By using an external signal for the synchronisation, an island grid with grid-forming inverters (GFMs) can be operated at a constant frequency. The global positioning system (GPS) provides a periodic pulse with a suitable accuracy. This is used to define the grid frequency and a reference for the voltage phase angle. A digital counter in the control hardware determines the phase angle. The counter is reset by each pulse of the GPS. An active power-angle droop control leads to partial power sharing between the GFMs and reduces distortions caused by non-ideal synchronisation. Furthermore, the grid operator can adjust the voltage reference phasors of the GFMs to control the power flow in the grid. An island grid with two GFMs and a hydro power plant is studied in simulations. The investigated power system is an altered and simplified grid model of Suðuroy, in the Faroe Islands. The effects of a load connection and a distorted GPS synchronisation are studied. Stable operation of the power system using the fixed-frequency approach is demonstrated.
KW - ACTIVE POWER-ANGLE DROOP
KW - FIXED-FREQUENCY OPERATION
KW - GPS-BASED SYNCHRONISATION
KW - GRID-FORMING INVERTERS
KW - ISLAND POWER SYSTEM
UR - http://www.scopus.com/inward/record.url?scp=85174290309&partnerID=8YFLogxK
U2 - 10.1049/icp.2023.1430
DO - 10.1049/icp.2023.1430
M3 - Conference contribution
T3 - IET Conference Proceedings
SP - 30
EP - 36
BT - 7th International Hybrid Power Plants & Systems Workshop (HYB23)
T2 - 7th International Hybrid Power Plants & Systems Workshop
Y2 - 22 May 2023 through 25 May 2023
ER -