Frequency stability analysis in low frequency AC systems for renewables power transmission

Research output: Research - peer-reviewPaper

The foreseen high penetration levels of wind energy will have serious implications on frequency stability, hence developed control methods of wind turbine and alternative technologies including energy storage should enable the provision of frequency support by wind power. Active research is ongoing to investigate the possibility of collecting and transmitting offshore wind power through low frequency alternating current systems (LFAC). This paper develops a novel method to enhance frequency support capability of generators connected to a LFAC system. The leveraged frequency regulation ability of the generators at LFAC system is emphasized. The voltage is proportional to the frequency of the LFAC system, so that the transformers can be protected when frequency drops. Then the generators at LFAC system acquire sufficient time for frequency regulation. In this paper, a hydro generator at LFAC system is regarded as an energy storage plant, which is connected to the LFAC system rather than normal frequency grid.
Original languageEnglish
StatePublished - 27 Jun 2017
Event6th IEEE International Conference on Clean Electrical Power - Genoa, Italy
Duration: 27 Jun 201729 Jun 2017


Conference6th IEEE International Conference on Clean Electrical Power

    Research areas

  • frequency regulation, low frequency AC systems, LFAC, hydropower, wind power



    Project: Research

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