Journal
IET RENEWABLE POWER GENERATION
Volume 12, Issue 11, Pages 1304-1313Publisher
INST ENGINEERING TECHNOLOGY-IET
DOI: 10.1049/iet-rpg.2018.5096
Keywords
three-term control; superconducting magnet energy storage; wind power plants; load regulation; frequency control; optimisation; hybrid power systems; power generation control; hydroelectric power stations; hydroelectric generators; wind turbines; frequency stability; SMES; frequency stability; real hybrid power system; high wind power penetration; load frequency control; LFC coordination; superconducting magnetic energy storage technology; optimal PID controller-based moth swarm algorithm; MSA; Egyptian power system; HWPP; EPS frequency deviation compensation; power ratings; load disturbances; power fluctuation mitigation; coordinated control strategy; Matlab-Simulink simulation; dynamics subsystems; nonreheat power plants; reheat power plants; hydropower plants; physical constraints; turbines; generation rate constraints; power plants; speed governor dead band; system uncertainties; convention generation system
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This study proposes a coordination of load frequency control (LFC) and superconducting magnetic energy storage (SMES) technology (i.e. auxiliary LFC) using a new optimal PID controller-based moth swarm algorithm (MSA) in Egyptian Power System (EPS) considering high wind power penetration (HWPP) (as a future planning of the EPS). This strategy is proposed for compensating the EPS frequency deviation, preventing the conventional generators from exceeding their power ratings during load disturbances, and mitigating the power fluctuations from wind power plants. To prove the effectiveness of the proposed coordinated control strategy, the EPS considering HWPP was tested by the MATLAB/SIMULINK simulation. The convention generation system of the EPS is decomposed into three dynamics subsystems; hydro, reheat and non-reheat power plants. Moreover, the physical constraints of the governors and turbines such as generation rate constraints of power plants and speed governor dead band (i.e. backlash) are taking into consideration. The results reveal the superior robustness of the proposed coordination against all scenarios of different load profiles, and system uncertainties in the EPS considering HWPP. Moreover, the results have been confirmed by comparing it with both; the optimal LFC with/without the effect of conventional SMES, which without modifying the input control signal.
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