A unified control framework for power oscillation damping and frequency regulation in photovoltaic power plants: Experimental field validation
Measurement: Journal of the International Measurement Confederation, cilt.285, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 285
- Basım Tarihi: 2026
- Doi Numarası: 10.1016/j.measurement.2026.122205
- Dergi Adı: Measurement: Journal of the International Measurement Confederation
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex, INSPEC, Academic Search Ultimate (EBSCO), Engineering Source (EBSCO), Materials Science & Engineering Collection (ProQuest), Technology Collection (ProQuest)
- Anahtar Kelimeler: Field validation, Frequency support, Photovoltaic power plant, Power oscillation damping, PSCAD
- Çukurova Üniversitesi Adresli: Evet
Özet
The growing integration of renewable energy (RE) and converter-interfaced generators (CIGs) has introduced significant challenges to grid stability. Among emerging stability concerns are power oscillations. Unlike synchronous generators equipped with power system stabilizers (PSS), RE power plant controllers (PPCs) generally lack PSS-like damping functionalities, limiting their ability to mitigate such oscillations and thereby posing a risk to system stability. Consequently, grid codes and regulations have evolved, requiring RE-based power plants to emulate the operational behavior of conventional power plants. A grid code compliant PPC is proposed for RE sources, including a power oscillation damping (POD) function, a frequency sensitive mode (FSM), and a limited frequency sensitive mode for over-frequency (LFSM-O) to enhance system stability. The proposed PPC is first validated through detailed simulation studies in PSCAD. To demonstrate universality and reliability, these simulations evaluate both a standalone PV power plant and a hybrid PV combined with a Battery Energy Storage System (BESS), tested under standard and severely weakened, low-inertia grid conditions. The control framework is subsequently verified at a large-scale PV power plant in Estonia. Field validation showed strong concordance with simulation studies, confirming the robustness and practical viability of the proposed integrated approach for enhancing power oscillation damping and frequency support in renewable power plants. This work also demonstrates application challenges and modifications required to grid codes to enable the POD effect of currently utilized frequency support functions.