Fault Detection and Isolation in DC Microgrid using Least Square Method

SEEE DIGIBOOK ON ENGINEERING & TECHNOLOGY, VOL. 01, FEB 2018 PP.(93-98)
Abstract– DC Microgrid protection is essential for continuous power supply to the customers. The objective of this proposed work is to detect and locate the fault for fast restoration of the system to normal operation. The proposed protection scheme for DC Microgrid uses Intelligent Electronic Device for detecting and locating the fault. For accurate fault location, the Least Square based estimation technique is used to estimate the inductance of the fault path, from which the direction of fault will be identified. Using the direction of the fault information, internal and external faults are discriminated. The proposed system is tested with various fault conditions and locations in DC Ring Microgrid. The DC Microgrid with ring configuration and its protection schemes are simulated using MATLAB/Simulink environment.
Index Terms – DC Ring Microgrid; Least Square Estimation Method; IED’s;
REFERENCE

[1] R. C. Dugan and T. E. McDermott, “Distributed generation,” IEEE Industry Applications Magazine, vol. 8, pp. 19–25, Mar 2002.
[2] S. Mishra, D. Ramasubramanian, and P. C. Sekhar, “A seamless control methodology for a grid-connected and isolated pv-diesel microgrid,” IEEE Trans. Power Syst., vol. 28, pp. 4393–4404, Nov 2013.
[3] J. Wu and X. Guan, “Coordinated multi-microgrids optimal control algorithm for smart distribution management system,” IEEE Trans.Smart Grid, vol. 4, pp. 2174–2181, Dec 2013.
[4] J. Dong, F. Gao, X. Guan, Q. Zhai, and J. Wu, “Storage-reserve sizing with qualified reliability for connected high renewable penetration micro-grid,” IEEE Trans. Sustainable Energy, vol. 7, pp. 732–743, April 2016.
[5] R. H. Lasseter and P. Paigi, “Microgrid: a conceptual solution,” in 35th Annual IEEE Power Electronics Specialists Conference, vol. 6, pp. 4285–4290, June 2004.
[6] H. Nikkhajoei and R. H. Lasseter, “Distributed generation interface to the certs microgrid,” IEEE Trans. Power Del., vol. 24, pp. 1598–1608, July 2009.
[7] R. Cuzner, “Does DC distribution make sense?,” IEEE Electrification Magazine, vol. 4, pp. 2–3, June 2016.
[8] M. Starke, L. M. Tolbert, and B. Ozpineci, “AC vs. DC distribution: A loss comparison,” in Proc. IEEE/PES Transmission and Distribution Conference and Exposition, pp. 1–7, April 2008.
[9] D. Salomonsson, L. Soder, and A. Sannino, “Protection of low-voltage DC microgrids,” IEEE Trans. Power Del., vol. 24, pp. 1045–1053, July 2009.
[10] J. D. Park and J. Candelaria, “Fault detection and isolation in low-voltage DC-bus microgrid,” IEEE Trans. Power Del., vol. 28, pp. 779–787, Jan. 2013.
[11] M. Starke, F. Li, L. M. Tolbert, and B. Ozpineci, “AC vs. DC distribution: Maximum transfer capability,” in Proc. IEEE Power and Energy Society General Meeting – Conversion and Delivery of Electrical Energy in the 21st Century, pp. 1–6, July 2008.
[12] D. Salomonsson and A. Sannino, “Low–voltage DC distribution system for commercial power systems with sensitive electronic loads,” IEEE Trans. Power Del., vol. 22, pp. 1620–1627, July 2007.
[13] M. Saeedifard, M. Graovac, R. F. Dias, and R. Iravani, “DC power systems: challenges and opportunities,” in IEEE PES General Meeting, pp. 1–7, July 2010.
[14] R. M. Cuzner and G. Venkataramanan, “The status of DC micro-grid protection,” in Proc. IEEE Ind. Appl. Soc. Annu. Meeting, pp. 1–8, Oct 2008.
[15] B. Lu and S. K. Sharma, “A literature review of IGBT fault diagnostic and protection methods for power inverters,” IEEE Trans. Ind. Appl., vol. 45, pp. 1770–1777, Sept 2009.
[16] A. Meghwani, S. Srivastava, and S. Chakrabarti, “A non-unit protection scheme for DC microgrid based on local measurements,” IEEE Trans. Power Del., available on early access, no. 99, DOI. 10.1109/TPWRD.2016.2555844, 2016.
[17] M. J. Mousavi and K. L. Butler-Purry, “A novel condition assessment system for underground distribution applications,” IEEE Trans. Power Syst., vol. 24, pp. 1115–1125, Aug 2009.
[18] S. D. A. Fletcher, P. J. Norman, K. Fong, S. J. Galloway, and G. M. Burt, “High-speed differential protection for smart DC distribution systems,” IEEE Trans. Smart Grid, vol. 5, pp. 2610–2617, Sept 2014.
[19] J. D. Park, J. Candelaria, L. Ma, and K. Dunn, “DC ring-bus microgrid fault protection and identification of fault location,” IEEE Trans. Power Del., vol. 28, pp. 2574–2584, May 2013.
[20] S. D. A. Fletcher, P. J. Norman, S. J. Galloway, P. Crolla, and G. M. Burt, “Optimizing the roles of unit and non-unit protection methods within DC microgrids,” IEEE Trans. Smart Grid, vol. 3, pp. 2079–2087, Dec 2012.
[21] B. Wang, M. Sechilariu, and F. Locment, “Intelligent DC microgrid with smart grid communications: Control strategy consideration and design,” IEEE Trans. Smart Grid, vol. 3, pp. 2148–2156, Dec 2012.


N. Dhanusri1, Dr.S.Chitra1, Dr.N.Devarajan2
1Government College of Technology,
Coimbatore, India
2Sri Ramakrishna Institute of Technology,
Coimbatore, India
ndhanusri@gmail.com,
eeechitra@gct.ac.in

Leave a Comment

Your email address will not be published. Required fields are marked *

Scroll to Top