Mahdi SAADATMAND, Babak MOZAFARI, Gevork B. GHAREHPETIAN, Soodabeh SOLEYMANI

Optimal fractional-order PID controller of inverter-based power plants for power systems LFO damping

The penetration of inverter-based power plants IBPPs , such as large-scale photovoltaic PV power plants LPPPs , is ever increasing considering the merits of renewable energy power plants REPPs . Given that IBPPs are added to power systems or replaced by conventional power plants, they should undertake the most common tasks of synchronous generators. The low-frequency oscillation LFO damping through the power system stabilizers PSSs of synchronous generators is regarded as one of the common tasks in power plants. This paper proposes an optimal fractional-order proportional-integral-derivative FOPID controller implemented in the control loop of IBPPs for LFO damping in power systems. For this purpose, the last version of the generic dynamic model for renewable technologies GDMRT is used, which was released by the Western Electricity Coordinating Council WECC and Electric Power Research Institute EPRI . In addition, an LPPP is studied as a case study. The FOPID controller is optimally tuned using the particle swarm optimization PSO algorithm in order to produce effective LFO damping. Finally, the performance of this controller is simulated and investigated in a two-area test system, showing the better performance of the LPPP for LFO damping by using the proposed optimal FOPID controller compared to the optimal lead-lag controller and optimal PID controller

Keywords:

Inverter-based power plant large-scale PV power plant, low-frequency oscillation, fractional-order proportional-integral-derivative, power oscillation damper,

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Turkish Journal of Electrical Engineering and Computer Science-Cover

ISSN: 1300-0632
Yayın Aralığı: Yılda 6 Sayı
Yayıncı: TÜBİTAK

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