Power Quality and Grid Impact Assessment of Offshore Hybrid Renewable Energy Systems Using ETAP


Creative Commons License

Syarif M. R. A., Terkeş M., Demirci A., Gökalp E.

5th International Thales Congress on Life, Engineering, Architecture and Mathematics, Cairo, Mısır, 16 - 18 Ekim 2025, cilt.1, sa.1, ss.1-11, (Tam Metin Bildiri)

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası: 1
  • Basıldığı Şehir: Cairo
  • Basıldığı Ülke: Mısır
  • Sayfa Sayıları: ss.1-11
  • Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
  • Yıldız Teknik Üniversitesi Adresli: Evet

Özet

The global shift toward renewable energy has highlighted offshore hybrid systems as a promising pathway for sustainable and reliable electricity generation. Offshore wind turbines, wave energy converters, and floating photovoltaic panels, when integrated with battery storage and advanced power converters, provide complementary resource availability and reduced variability. While previous research has mainly addressed the techno-economic feasibility of such systems under policy scenarios such as carbon taxation, their long-term viability also depends on compliance with power quality standards and distribution network stability. Building on earlier work in which the economic and environmental impacts of carbon tax scenarios were analyzed using HOMER Pro, this study extends the analysis toward a technical validation perspective. The optimal configuration obtained under the most cost-effective carbon tax level (54 $/t) was implemented in ETAP for detailed load flow, short-circuit, and harmonic analyses. The offshore hybrid system was modeled at the point of common coupling (400 V bus) of a distribution network, with converter-level harmonic characteristics defined according to state-of-the-art technologies. Results demonstrate that, despite favorable economic indicators, such as a net present cost (NPC) of 180,609 $, cost of energy (COE) of 0.02672 $/kWh, and 80.9% renewable fraction (RF), the system introduces notable technical challenges, including elevated total harmonic distortion (THD) at the bus, significant branch losses, and power factor deviations. Harmonic spectra revealed particularly high contributions from the energy storage system and converter interactions, underlining the necessity of advanced filtering and compensation strategies. By bridging economic optimization with technical validation, this work emphasizes that offshore hybrid energy systems cannot be assessed solely on cost and emissions metrics but must also undergo rigorous power quality evaluation to ensure reliable grid integration. The dual perspective presented offers valuable insights for regulators, utilities, and policymakers, underscoring the importance of aligning economic incentives such as carbon taxation with the technical requirements of modern distribution networks.