Modeling of integrated power system with wind turbine based on a doubly fed induction generator and solid oxide fuel cell for small‐signal stability analysis

Abstract

Summary This paper aims to propose the small‐signal model of a wind turbine (WT) based on a doubly fed induction generator (DFIG) and a solid oxide fuel cell (SOFC) into the transmission network for dynamic stability analysis of the integrated system. The principal goal is to introduce the novel small‐signal model of the hybrid power system in the presence of the WT and SOFC power plants for analyzing of electromechanical oscillations. Therefore, the modeling of each generation unit of the integrated system in the same framework is illustrated. Besides, a comprehensive mathematical model is demonstrated from WT and SOFC units integrated with a synchronous generator (SG) and the infinite bus system. Based on the proposed model, the linear analysis is illustrated under different conditions for stability studies. Moreover, this study presents the influence of different portions of WT and SOFC units on the small‐signal stability. The simulation results represent the performance of the suggested model.

Parameter tuning of PSS and STATCOM controllers using genetic algorithm for improvement of small‐signal and transient stability of power systems with wind power

“…The power system consists of nonlinear components with a high dynamic. It results in instability to the system under various operating condition such as sudden loss of generator or load, symmetrical and unsymmetrical faults, and disturbance 40‐42 . In this work, the characteristic of the system is evaluated by using transient and small‐signal stability.…”

Enhancing the wind farm‐based power system stability with coordinated tuned supplementary controller

“…The test system used is relatively small, and the performance of the method on larger and more complex systems is unknown. The reliance on a linear model based on current injection may also limit the accuracy of the results 5 . To mitigate the LFOs of the power system, cost‐effective methods have been carried out, including installing PSS on the synchronous generators (SGs) 6 .…”

“…The reliance on a linear model based on current injection may also limit the accuracy of the results. 5 To mitigate the LFOs of the power system, cost-effective methods have been carried out, including installing PSS on the synchronous generators (SGs). 6 PSS generally generates a positive synchronizing and damping torque in the SG excitation circuit to offset the negative damping torque generated in the original excitation voltage regulator, thereby improving the system damping level and enhancing the dynamic stability of the system.…”

Transformerlesshigh‐gain battery‐integratedDC‐DCboost converter forfuel‐cellstacks: Design, analysis, and control

“…Fuel‐cell stacks (FCS) are increasingly becoming popular, as a clean source of power, in standalone applications such as electric vehicles, data centers, telecommunication towers, low power low voltage dc grids (LVDCG) etc 1‐3 . However, the low output voltage and slower dynamic response against rapid load variation is still a matter of concern 1 …”

“…Fuel-cell stacks (FCS) are increasingly becoming popular, as a clean source of power, in standalone applications such as electric vehicles, data centers, telecommunication towers, low power low voltage dc grids (LVDCG) etc. [1][2][3] However, the low output voltage and slower dynamic response against rapid load variation is still a matter of concern. 1 List of Symbols and Abbreviations: THGBIBC, transformerless high-gain battery-integrated boost converter; FCS, fuel-cell stack; SEs, switching elements; CBC, conventional boost converter; APS, auxiliary power source; BPCS, battery pulse charging scenario; BPDS, battery pulse discharging scenario; IBS, isolated battery scenario; LVDG, low voltage dc grid; RGA, relative gain array; CCM, continuous-conduction mode; ESR, equivalent series resistance; Vg, fuel-cell stack voltage; i g , fuel-cell stack current; i L1 , i L2 , inductors (L 1 and L 2 ) currents; D 1 , D 2 , duty ratio of switches S 1 , S 2 ; V cx , V c0 , voltages across the capacitors (C x ,C 0 ); i cx , i co , current through capacitors (C x , C 0 ); η, efficiency.…”