Effect of grid-connected solid oxide fuel cell power generation on power systems small-signal stability

Wei, Du; Wang, H.F.; Zhang, X.F.; Xiao, Liye

doi:10.1049/iet-rpg.2010.0024

Cited by 27 publications

(20 citation statements)

References 18 publications

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“…Figure indicates the block diagram of the SOFC generator, which is perfectly applicable, and its dynamic model is presented as follows based on models of previous studies …”

Section: Problem Formulationmentioning

confidence: 99%

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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

Safari

Badr

Farrokhifar

2019

Int Trans Electr Energ Syst

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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.

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“…Figure indicates the block diagram of the SOFC generator, which is perfectly applicable, and its dynamic model is presented as follows based on models of previous studies …”

Section: Problem Formulationmentioning

confidence: 99%

“…The fuel cell voltage is derived by Nernst's equation and Ohm's law as

V_{fc} = N_{0} ([], E_{0} + \frac{RT}{2 F} ln ((), \frac{p_{h 2} \times p_{o 2}^{0.5}}{p_{h 2 o}})) - {rI}_{fc} .

…”

Section: Problem Formulationmentioning

confidence: 99%

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

Safari

Badr

Farrokhifar

2019

Int Trans Electr Energ Syst

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“…Given the shortage of fossil fuel resources, clean fuel cells have been exploited and utilized to meet the energy needs due to their clean, quiet, and efficient specifications [8][9][10]. Compared with other kinds of fuel cells, solid oxide fuel cells (SOFCs) have more advantageous features, such as having no leakage, higher comprehensive utilization, and longer service life, among others.…”

Section: Introductionmentioning

confidence: 99%

Modelling and control of solid oxide fuel cell generation system in microgrid

Zhou

Sun

et al. 2017

Journal of Electrical Engineering

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Compared with other kinds of fuel cells, solid oxide fuel cell (SOFC) has been widely used in microgrids because of its higher efficiency and longer operation life. The weakness of SOFC lies in its slow response speed when grid disturbance occurs. This paper presents a control strategy that can promote the response speed and limit the fault current impulse for SOFC systems integrated into microgrids. First, the hysteretic control of the bidirectional DC-DC converter, which joins the SOFC and DC bus together, is explored. In addition, an improved droop control with limited current protection is applied in the DC-AC inverter, and the active synchronization control is applied to ensure a smooth transition of the microgrid between the grid-connected mode and the islanded mode. To validate the effectiveness of this control strategy, the control model was built and simulated in PSCAD/EMTDC. K e y w o r d s: bidirectional DC-DC converter, fault current, microgrid, mode transition, solid oxide fuel cell (SOFC)

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“…Sendjaja and Kariwala [26] studied the use of decentralized proportional-integral-derivative (PID) controllers on the benchmark constant temperature SOFC dynamic model given in [21]. The same benchmark model was used in [27,28] to study the load tracking and small-signal stability issues pertaining to a grid-connected SOFC. As the stack temperature has been recognized to have significant impacts on the cell lifespan, some studies have improved the constant temperature model by including the energy balance equation.…”

Section: Introductionmentioning

confidence: 99%

Hierarchical Load Tracking Control of a Grid-Connected Solid Oxide Fuel Cell for Maximum Electrical Efficiency Operation

Zhu³

2015

Energies

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Based on the benchmark solid oxide fuel cell (SOFC) dynamic model for power system studies and the analysis of the SOFC operating conditions, the nonlinear programming (NLP) optimization method was used to determine the maximum electrical efficiency of the grid-connected SOFC subject to the constraints of fuel utilization factor, stack temperature and output active power. The optimal operating conditions of the grid-connected SOFC were obtained by solving the NLP problem considering the power consumed by the air compressor. With the optimal operating conditions of the SOFC for the maximum efficiency operation obtained at different active power output levels, a hierarchical load tracking control scheme for the grid-connected SOFC was proposed to realize the maximum electrical efficiency operation with the stack temperature bounded. The hierarchical control scheme consists of a fast active power control and a slower stack temperature control. The active power control was developed by using a decentralized control method. The efficiency of the proposed hierarchical control scheme was demonstrated by case studies using the benchmark SOFC dynamic model.

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Effect of grid-connected solid oxide fuel cell power generation on power systems small-signal stability

Cited by 27 publications

References 18 publications

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

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

Modelling and control of solid oxide fuel cell generation system in microgrid

Hierarchical Load Tracking Control of a Grid-Connected Solid Oxide Fuel Cell for Maximum Electrical Efficiency Operation

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