Grid-connected Response Verification of AC Microgrid under Single Line-to-ground Short Circuit

Main Article Content

Maruf A. Aminu

Abstract

In design of power systems, assumptions are made to model the physical systems. The assumptions may not sufficiently reflect the behavior of the system under normal and faulted conditions. Under short circuit conditions, system parameters vary significantly, particularly in microgrids with grid interconnection capabilities. This paper presents the result of validating the response of a microgrid which is capable of grid interconnection and islanding under voltage and reactive power control regimes. The microgrid is modeled to incorporate two wind turbines, each rated 5.5 kW, 400 V. The utility has synchronous generator rated 100 MW, 13.8 kV. Both the utility and microgrid are capable of exchanging active power and reactive power. Single line-to-ground short circuits are introduced and withdrawn at 30.00 s and 32.00 s, respectively. The dynamic responses of the testbed are captured pre-, during- and post-short circuit in grid-connected mode under both control regimes. The response of the testbed is verified to be consistent with established short circuit theory, verifying the validity of the system for short circuit detection and analysis. The testbed can therefore be used for short circuit and related studies, design optimization and power system performance prediction.

Keywords:
Microgrid, short circuit, grid-connected, active power, reactive power

Article Details

How to Cite
Aminu, M. A. (2019). Grid-connected Response Verification of AC Microgrid under Single Line-to-ground Short Circuit. Advances in Research, 19(2), 1-10. https://doi.org/10.9734/air/2019/v19i230117
Section
Original Research Article

References

Didier G, Bonnard CH, Lubin T, Lévêque J. Comparison between inductive and resistive SFCL in terms of current limitation and power system transient stability. Electric Power Systems Research. 2015; 125:150–158.

Papaefthymiou SV, Lakiotis VG, Margaris ID, Papathanassiou SA. Dynamic analysis of island systems with wind-pumped-storage hybrid power stations. Renewable Energy. 2015;74;544–554.

Rona B, Güler Ö. Power system integration of wind farms and analysis of grid code requirements. Renewable and Sustainable Energy Reviews. 2015;49:100 –107.

Weedy BM, Cory BJ, Jenkins N, Ekanayake JB, Strbag G. Electric power systems. 5th ed. Somerset, NJ, USA: John Wiley & Sons; 2012.

MA Aminu. Design of reactive power and voltage controllers for converter-interfaced ac microgrids. British Journal of Applied Science & Technology. 2016;17:1.

Sulla F, Svensson J, Samuelsson O. Symmetrical and unsymmetrical short-circuit current of squirrel-cage and doubly-fed induction generators. Electric Power Systems Research. 2011;81(7):1610–1618.

MA Aminu. Modeling and simulation of protective relay for short circuits in AC micro-grids using fuzzy logic. Curtin University, Perth, Australia; 2016.

Chaudhary M, Brahma SM, Ranade SJ. Validated short circuit modeling of type 3 wind turbine generator with crowbar protection. Presented at the North American Power Symposium (NAPS). 2013;1–6.

Roennspiess OE, Efthymiadis AE. A comparison of static and dynamic short circuit analysis procedures. IEEE Transactions on Industry Applications. 1990;26(3):463–475.

Soni N, Doolla S, Chandorkar MC. Improvement of transient response in microgrids using virtual inertia. IEEE Transactions on Power Delivery. 2013;28(3):1830–1838.

Palizban O, Kauhaniemi K, Guerrero JM. Microgrids in active network management – part II: System operation, power quality and protection. Renewable and Sustainable Energy Reviews. 2014;36:440–451.

Patrao I, Figueres E, Garcerá G, González-Medina R. Microgrid architectures for low voltage distributed generation. Renewable and Sustainable Energy Reviews. 2015;43:415–424.

Schomaker J. Overcurrent protective devices preserve system integrity. Plant Engineering. 2005;59(6):48–54.

Aminu MA. Validating response of AC micro-grid to three phase short circuit in grid-connected mode using dynamic analysis. International Journal of Electrical Components and Energy Conversion. 2016;2(4):21–34.

Tchakoua P, Wamkeue R, Ouhrouche M, Tameghe TA, Ekemb G. A new approach for modeling darrieus-type vertical axis wind turbine rotors using electrical equivalent circuit analogy: Basis of theoretical formulations and model development. Energies (19961073). 2015;8(10):10684–10717.

K P’yankov, M Toporkov. Mathematical modeling of flows in wind turbines with a vertical axis. Fluid Dynamics. 2014;49(2): 249–258.

Bazilevs Y, Korobenko A, Deng X, Yan J. Novel structural modeling and mesh moving techniques for advanced fluid-structure interaction simulation of wind turbines. International Journal for Numerical Methods in Engineering. 2015; 102(3/4): 766–783.

Xu F, Yuan FG, Liu L, Hu J, Qiu Y. Performance prediction and demonstration of a miniature horizontal axis wind turbine. Journal of Energy Engineering. 2013;139(3):143–152.

Akhmatov V. Full-scale verification of dynamic wind turbine models in Wind Power in Power Systems, John Wiley & Sons, Ltd. 2012;865–889.

Dongliang X, Zhao X, Lihui Y, Ostergaard J, Yusheng X, Kit Po W. A comprehensive LVRT control strategy for DFIG wind turbines with enhanced reactive power support. IEEE Transactions on Power Systems. 2013;28(3):3302–3310.

Li J, Zheng T, Wang Z. Short-circuit current calculation and harmonic characteristic analysis for a doubly-fed induction generator wind turbine under converter control. Energies (19961073). 2018;11(9):2471.

Sellami T, Berriri H, Jelassi S, Darcherif AM, Mimouni MF. Short-circuit fault tolerant control of a wind turbine driven induction generator based on sliding mode observers. Energies (19961073). 2017;10(10):1611.

MA Eftekhari, AS Molavi Tabrizi, SM Sadeghzadeh. The effect of resistive-type superconducting fault current limiters on the test feeder with wind-turbine generation system. IETE Journal of Research. 2012;58(5):411–417.

XY Zheng, Y Lei. Stochastic response analysis for a floating offshore wind turbine integrated with a steel fish farming cage. Applied Sciences (2076-3417). 2018;8(8):1229.