Mitigation of Voltage Unbalance by DSTATCOM in a Three Phase Four Wire System
Abstract
This paper presents a Distribution Static Compensator (DSTATCOM) that uses a traditional Synchronous Reference Frame (SRF) to make source current in phase and sinusoidal in shape w.r.t source voltage, so that unity power factor is achieved at source side. In addition to this, a new concept of single phase synchronous d-q reference frame theory is used for generation of reference signals in a three phase distribution system for compensation of voltage unbalances at the load side. Further, this paper uses a traditional hysteresis controller for generation of switching signals for the Voltage Source Converter (VSC). Moreover, switching of DSTATCOM between Current Controlled Mode(CCM) and Voltage Controlled Mode(VCM) is carried out so that only single DSTATCOM serves the problem for current and voltage related Power Quality problems. Simulations are carried out in MATLAB/Simulink environment to validate the proposed scheme and results indicate that the unity power factor is achieved during CCM mode and voltages in all the three phases at PCC are maintained at 1 p.u. during VCM mode.References
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[2] D. Habijan, M. Cavlovic, D. Jaksic,‘The issue of asymmetry in low voltage network with distributed generation’. 22nd International Conference and Exhibition on Electricity Distribution (CIRED 2013)., Stockholm, pp. 1-4, 2013
[3] V. Khadkikar, M. Singh, A. Chandra, B. Singh, ”Implementation of single-phase synchronous d-q reference frame controller for shunt active filter under distorted voltage condition.” Joint International Conference on Power Electronics, Drives and Energy Systems & 2010 Power India, pp. 1 – 6, 2010
[4] A.F.T. Neto, G.P.L. Cunha, M.V.B. Mendonca, ‘A comparative evaluation of methods for analysis of propagation of unbalance in electric systems’. Proc. IEEE PES Trans. and Dist., Orlando, pp. 1–8 , 2012
[5] K. Venkatraman, M. Selvan, S. Moorthi, “Predictive current control of distribution static compensator for load compensation in distribution system”. IET Generation, Transmission & Distribution, vol. 10, no.10, pp. 2410-2423, 2016.
[6] S. Tsai; Y. Chang. ”Dynamic and unbalance voltage compensation using STATCOM”, IEEE Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century. pp. 1 – 8, 2008.
[7] Q. Yao, D. G. Holmes “A simple, novel method for variable-hysteresis-band current control of a three phase inverter with constant switching frequency” Conference Record of the 1993 IEEE Industry Applications Conference Twenty-Eighth IAS Annual Meeting, vol. 2 pp. 1122 – 1129, 1993
[8] A. Jouanne, B. Banerjee, "Assessment of voltage unbalance," IEEE Transactions on Power Delivery, vol. 16, pp. 782-790, 2001.
[9] R. Yan, T. Saha, ‘Investigation of voltage imbalance due to distribution network unbalanced line configurations and load levels’, IEEE Trans. Power Syst., vol.28, no.2, pp. 1829–1838, 2013
[10] A. Campos, G. Joos, P. D. Ziogas, J. F. Lindsay, ”Analysis and design of a series voltage unbalance compensator based on a three-phase VSI operating with unbalanced switching functions”, IEEE Transactions on Power Electronics, vol.9, no. 3, pp. 269 – 274, 1994
[11] I. Marei, M. M. Salama, ”Advanced Techniques for Voltage Flicker Mitigation”, IEEE International Power Electronics Congress, pp. 1 – 5, 2006
[12] F. Xu, J. Kueck, L. Tolbert, D. Rizy “Voltage and Current Unbalance Compensation using a Parallel Active” IEEE Power Electronics Specialists Conference pp. 2919 – 2925, 2007
[13] P. Kanjiya, B. Singh, A. Chandra, K. Al-Haddad “SRF Theory Revisited” to Control Self-Supported Dynamic Voltage Restorer (DVR) for Unbalanced and Nonlinear Loads” IEEE Transactions on Industry Applications, vol.49, no.5, pp.2330 – 2340, 2013
[14] V. Khadkikar, A. Chandra, B. N. Singh. “Generalised single-phase p-q theory for active power filtering: simulation and DSP-based experimental investigation” IET Power Electronics, vol.2, no.1, pp.67 – 78, 2009
[15] K. Venkatraman, S. Moorthi, M. Selvan, “Modelling and Control of Transformer-less Universal Power Quality Conditioner (TUnPQC): An Effective Solution for Power Quality Enhancement in Distribution System”. Springer Link, Journal of Control, Automation and Electrical Systems, vol.28, no.1, pp. 123–134, 2017
[16] B. Singh, P. Jayaprakash, “Comprehensive Study of DSTATCOM Configurations”. IEEE Transactions on Industrial Informatics, vol.10, no.2, pp. 854 – 870, 2014.
[17] M. Tarafdar Haque “Single-phase pq theory for active filters” TENCON '02. Proceedings. 2002 IEEE Region 10 Conference on Computers, Communications, Control and Power Engineering, vol.3, pp.1941 – 1944, 2002.
[18] M. Osborne, M. Kitchin, R. Ryan. 1995. “Custom Power Technology in power system: an overview”. Paper presented at IEE North Eastern Centre Power Section Symposium on the Reliability, Security and Power Quality of Distribution Systems, pp. 1001-1011, 1995
[19] M. Bajaj, S. Rautela, A. Sharma, “A comparative analysis of control techniques of SAPF under source side disturbance” International Conference on Circuit, Power and Computing Technologies (ICCPCT), pp. 1 – 7, 2016
[20] B. Singh, P. Jayaprakash; D P Kothari, “Three single-phase voltage source converter based three-phase four wire DSTATCOM” International Conference on Power Systems, pp. 1 – 5, 2009
[21] H. Akagi, H. Fujita. “A Shunt Active Filter Based on Voltage Detection for Harmonic Termination of a Radial Power Distribution Line”. IEEE Transactions on Industry Applications, vol.35, no.3, pp. 1393–1399, 1998.
[22] K. Karanki, N. Geddada, M. Mishra, B. Kumar, ”A modified three-phase four-wire UPQC topology with reduced DC-link voltage rating”, IEEE Transactions on Industrial & Electronics, vol.60, no.9, pp.3555–3566, 2013
[23] Dheepan Chakkravarthy, Venkatraman, K., Selvan, M.P., Moorthi and M. Venkata Kirthiga, “Capability evaluation of four-leg DSTATCOM for compensating multifarious loads,” Australian Journal of Electrical and Electronics Engineering Vol. 13, no. 4, pp. 229-243, 2016.
Published
2020-01-08
How to Cite
PATEL, Dhairya; VENKATRAMAN, K; RUDRARAJU, Venkata Rama Raju.
Mitigation of Voltage Unbalance by DSTATCOM in a Three Phase Four Wire System.
Journal of Power Technologies, [S.l.], v. 99, n. 4, p. 237–244, jan. 2020.
ISSN 2083-4195.
Available at: <https://papers.itc.pw.edu.pl/index.php/JPT/article/view/1595>. Date accessed: 19 apr. 2024.
Issue
Section
Electrical Engineering
Keywords
Hysteresis Controller, DSTATCOM, Power Quality, Single Phase SRF theory, Voltage Unbalance, Current Controlled Mode, Voltage Controlled Mode.
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