Irianto, Willy Aelredus Irianto (2026) SOGI-AHO Based Dispatchable Virtual Oscillator Control GFM For Grid-connected Enhancement Under Phase Disturbances. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Peningkatan penetrasi energi terbarukan telah mendorong integrasi inverter-basedresources ke dalam sistem tenaga listrik modern. Dalam kondisi ini, menjaga kestabilan
tegangan dan frekuensi menjadi tantangan, sehingga diperlukan strategi pengendalian Grid-Forming Inverter yang mampu mengatur tegangan dan frekuensi selama terjadi gangguan jaringan, termasuk peristiwa loncatan fasa (phase jump). Beberapa studi terbaru telah menunjukkan keunggulan Dispatchable Virtual Oscillator Control (dVOC) berbasis
Andronov–Hopf Oscillator (AHO). Dalam tugas akhir ini, sinyal masukan tambahan yang dihasilkan oleh Second-Order Generalized Integrator (SOGI) diintegrasikan ke dalam struktur AHO. Tujuannya adalah untuk mengurangi tekanan arus transien dan memitigasi lonjakan maupun penurunan daya selama gangguan fasa. Sistem kendali yang diusulkan dievaluasi melalui dua variasi loncatan fasa pada dua kondisi kekuatan jaringan yang berbeda, dan
performanya dibandingkan dengan AHO-dVOC standar, sistem kendali Droop, dan sistem kendali VSM. Hasil simulasi menunjukkan bahwa SOGI-AHO dVOC yang diusulkan menghasilkan deviasi daya aktif yang lebih rendah, waktu tunak yang lebih singkat, serta nilai worst phase RMS current yang lebih kecil dibandingkan dengan tipe kendali lainnya. Hasil ini
menunjukkan efektivitas mekanisme yang diusulkan dalam meningkatkan performa GFM selama gangguan fasa.
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The increasing penetration of renewable energy has led to greater integration of inverterbased resources into modern power systems. Under these conditions, maintaining stable voltage and frequency becomes more challenging, which increases the need for Grid-Forming Inverter control strategies capable of regulating voltage and frequency during grid disturbances, including phase jump events. Recent studies have shown the advantages of the Dispatchable
Virtual Oscillator Control (dVOC) based on Andronov-Hopf Oscillator (AHO). In this final project, an additional input signal generated by a Second-Order Generalized Integrator (SOGI) is incorporated into the AHO structure. The objective is to reduce transient current stress and mitigate power surge or dip during phase disturbances. The proposed controller is evaluated through two phase jump variations under two grid-strength conditions, and its performance is
compared with standard AHO-dVOC, Droop, and VSM control. The simulation results show that the proposed SOGI-AHO dVOC produces lower active power deviations, shorter settling
times, and smaller worst phase RMS current compared with the other controllers. These results successfully demonstrate the effectiveness of the proposed mechanism in improving the GFM performance under phase disturbances.
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