Comparative study of effectiveness of different var compensation devices in large-scale power networks

Abstract

A comparison of the effectiveness of installing reactive power compensators, such as shunt capacitors, static var compensators (SVCs), and static synchronous compensators (STATCOMs), was presented in large-scale power networks. A suitable bus was first identified using modal analysis method. The single shunt capacitor, single SVC, and single STATCOM were installed separately on the most critical bus. The effects of the installation of different devices on power loss reduction, voltage profile improvement, and voltage stability margin enhancement were examined and compared for 57- and 118-bus transmission systems. The comparative study results show that SVC, and STATCOM are expensive compared to shunt capacitor, yet the effect of installing STATCOM is better than SVC and the effect of installing SVC is better than that of shunt capacitor in achieving power loss reduction, voltage profile improvement and voltage stability margin enhancement.

Keywords

shunt capacitor / static var compensator / static synchronous compensator / power loss / voltage profile / voltage stability

References

[1] SaranjeetKEvolutionary algorithm assisted optimal placement of facts controllers in power system [M], 2009PatialaThapar University1-71

[2] Sode-yomeA, MithulananthanN. Comparison of shunt capacitor, SVC and statcom in static voltage stability margin enhancement [J]. International Journal of Elecetrical Engineering Education, 2004, 41(2): 158-171

[3] SirjaniR, MohamedA, ShareefH. Optimal capacitor placement in a radial distribution system using harmony search algorithm [J]. Journal of Applied Sciences, 2010, 10(23): 2996-3006

[4] AzadaniE N, HosseinianS H, HasanporP. Optimal placement of multiple statcom for voltage stability margin enhancement using particle swarm optimization [J]. Electrical Engineering, 2008, 90(7): 503-510

[5] SirjaniR, MohamedA, ShareefH. Optimal placement and sizing of static var compensators in power systems using improved harmony search algorithm [J]. Electrical Review, 2011, 87(7): 214-218

[6] NoroozianM, PeterssonN A, ThorvaldsonB, NilssonA B, TaylorC W. Benefits of svc and statcom for electric utility application [C]. Conference and Exposition on Transmission and Distribution, 2003VasterasIEEE Press1143-1150

[7] SedighizadehM, RezazadehA, ParayandehM. Comparison of SVC and statcom impacts on wind farm stability connected to power system [J]. International Journal of Engineering and Applied Sciences, 2010, 2(2): 13-22

[8] Guide for Economic Evaluation of Flexible AC Transmission Systems (FACTS) in open Access Environment [R]. New York: EPRI-TR 108500, GE, 1997.

[9] CoeveringJ V, StovallJ P, HauthR L, TattoP J, RailingB D, JohnsonB K. The next generation of HVDC- needed R&D, equipment costs, and cost comparisons [C]. Proceeding of EPRI Conference of Future of Power Delivery, 1996Washington D.C.EPRI1-6

[10] KundurP. Power system stability and control. EPRI power system engineering series [M], 1994New YorkMcGraw-Hill

[11] ThukaramD, LomiA. Selection of static VAR compensator location and size for system voltage stability improvement [J]. Electric Power System Research, 2000, 54(2): 139-150

[12] MithulananthanN, CañizaresC A, ReeveJ. Comparison of PSS, SVC and statcom controllers for damping power system oscillation [J]. IEEE Transaction on Power System, 2003, 18(2): 786-792

[13] EtemadzadehR, NabaviR, ShayanfarH A. Optimal placement of svc based on line flow base equation using mixed integer nonlinear programming [C]. Proceeding of the IEEE Conference, Chengdu, 2010ChinaIEEE Press1-5

[14] PisicaI, BulacC, TomaL, EremiaM. Optimal SVC placement in electric power systems using a genetic algorithms based method [C]. IEEE Power Tech Conference, 2009BuchrestIEEE Press1-6

[15] ShayganM, SeifossadatS G H, RazazM. Study the effects of STATCOM on the static voltage stability improvement and reduction of active and reactive losses [J]. International Review of Electrical Engineering, 2011, 6(4): 1862-1869

[16] AchaE, Fuerte-EsquivelC R, Ambriz-PerezH, Angeles-CamachoCFACTS modeling and simulation in power network [M], 2004New YorkJohn Wiley and Sons Ltd

[17] ZhangX P, RehtanzC, PalB, FlexibleA CTransmission systems modeling and control [M], 2006GenrmanySpringer Verlag

[18] SharmaC, GannessM G. Determination of power system voltage stability using modal analysis [C]. IEEE International Conference on Power Engineering, Energy and Electrical Drives, 2007SetubalIEEE Press381-387

[19] University of Washington. Power systems test case archive. [EB/OL]. [2012-05-02].http://www.ee.washington.edu/research/pstca/