Grid-forming control strategies for black start by offshore wind power plants

Jain, Anubhav; Sakamuri, Jayachandra N.; Cutululis, Nicolaos A.

Large-scale integration of renewable energy sources with power-electronic converters is pushing the power system closer to its dynamic stability limit. This has increased the risk of wide-area blackouts. Thus, the changing generation profile in the power system necessitates the use of alternate sources of energy such as wind power plants, to provide black-start services in the future. However, this requires grid-forming and not the traditionally prevalent grid-following wind turbines. This paper introduces the general working principle of grid-forming control and examines four of such control schemes. To compare their performance, a simulation study has been carried out for the different stages of energization of onshore load by a high-voltage direct-current (HVDC)-connected wind power plant. Their transient behaviour during transformer inrush, converter pre-charging and de-blocking, and onshore block-load pickup has been compared and analysed qualitatively to highlight the advantages and disadvantages of each control strategy.

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Jain, Anubhav / Sakamuri, Jayachandra N. / Cutululis, Nicolaos A.: Grid-forming control strategies for black start by offshore wind power plants. 2020. Copernicus Publications.

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