Abstract
Offshore HVDC-connected wind farms where the wind plant power collection network becomes DC, rather than AC, offer reduced electrical losses, lower equipment ratings potentially leading to lower bill-of-material cost, and undiminished functionality. However, no standards exist for an offshore medium-voltage DC power collection cable-based system, routing power from MVDC wind turbines all the way to the HVDC export cable. To progress, it is therefore important to establish some common reference for the design and performance of the components needed in an MVDC collection network. Any suggested MVDC collection solution must be possible to characterize and evaluate through a series of case studies. This paper proposes a methodology to simulate the MVDC collection network and thereby find suitable ratings of its components. The methodology is intended to allow studies on any configuration of the MVDC power collection, regardless of choice of turbine converter circuit, MVDC cable configuration, use of DC circuit breakers, substation converter circuit, control and protection. The paper presents the necessary list of studies, and includes examples of simulation results for an exemplary MVDC wind power plant.
Original language | English |
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Title of host publication | Proceedings of CIGRÉ general session 2016 |
Number of pages | 13 |
Publisher | CIGRE (International Council on Large Electric Systems) |
Publication date | Aug 2016 |
Article number | B4-301 |
Publication status | Published - Aug 2016 |
Event | Cigré Session - Paris, France Duration: 21 Aug 2016 → 26 Aug 2016 Conference number: 46 |
Conference
Conference | Cigré Session |
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Number | 46 |
Country/Territory | France |
City | Paris |
Period | 21/08/2016 → 26/08/2016 |
Keywords
- Offshore wind power
- MVDC power collection
- VSC-HVDC
- DC/DC conversion