A Group Setting of IED in Microgrid Protection Management System

There are a number of Distributed Generations (DGs) installed in microgrid, which may have diverse path and direction of power flow or fault current. The overcurrent protection scheme for the traditional radial type distribution system will no longer meet the needs of microgrid protection. Integrating the Intelligent Electronic Device (IED) and a Supervisory Control and Data Acquisition (SCADA) with IEC 61850 communication protocol, the paper proposes a Microgrid Protection Management System (MPMS) to protect power system from the fault. In the proposed method, the MPMS performs logic programming of each IED to coordinate their tripping sequence. The GOOSE message defined in IEC 61850 is used as the transmission information medium among IEDs. Moreover, to cope with the difference in fault current of microgrid between grid-connected mode and islanded mode, the proposed MPMS applies the group setting feature of IED to protect system and robust adaptability. Once the microgrid topology varies, the MPMS will recalculate the fault current and update the group setting of IED. Provided there is a fault, IEDs will isolate the fault at once. Finally, the Matlab/Simulink and Elipse Power Studio software are used to simulate and demonstrate the feasibility of the proposed method.

Authors:

• Jyh-Cherng Gu
• Ming-Ta Yang
• Chao-Fong Yan
• Hsin-Yung Chung
• Yung-Ruei Chang
• Yih-Der Lee
• Chen-Min Chan
• Chia-Hao Hsu

Keywords:

• IEC 61850
• IED
• Group Setting
• Microgrid.

References:

[1] A. K. Sahoo, “Protection of Microgrid through Coordinated Directional
Over-current Relays,” in Proceeding of Global Humanitarian Technology
Conference, pp. 129-134, Trivandrum, 26-27 September, 2014.
[2] L. J. Jin, M. M. Jiang, and G. Y. Yang, “Fault Analysis of Microgrid and
Adaptive Distance Protection Based on Complex Wavelet Transform,” in
Proceeding of Electronics and Application Conference and Exposition
(PEAC), pp. 360-364, Shanghai, 5-8 November, 2014.
[3] S. M. Brahma, J. Trejo, and J. Stamp, “Insight into Microgrid Protection,”
in Proceeding of Innovative Smart Grid Technologies Conference Europe
(ISGT-Europe), pp. 1-6, Istanbul, 12-15 October, 2014.
[4] M. A. Zamani, T. S. Sidhu, and A. Yazdani, “A Protection Strategy and
Microprocessor-Based Relay for Low-Voltage Microgrids,” IEEE
Transactions on Power Delivery, Vol. 26, No. 3, pp. 1873-1883, July,
2011.
[5] W. K. A. Najy, H. H. Zeineldin, and W. L. Woon, “Optimal Protection
Coordination for Microgrids with Grid-Connected and Islanded
Capability,” IEEE Transactions on Industrial Electronics, Vol. 60, No. 4,
pp. 1668-1677, April, 2013.
[6] S.-K. Huang, “Implementation of Protection Systems in Microgrids
Based on IEC 61850 Communication,” (in Traditional Chinese), M.S.
thesis, Department of Electrical Engineering, National Taiwan University
of Science and Technology, Taipei, Taiwan, 2013.
[7] Y.-S. Huang, “Implementation of an IEC 61850 Based Protection
Management Systems in Microgrids,” (in Traditional Chinese), M.S.
thesis, Department of Electrical Engineering, National Taiwan University
of Science and Technology, Taipei, Taiwan, 2014.
[8] T. S. Ustun, C. Ozansoy, and A. Ustun, “Fault Current Coefficient and
Time Delay Assignment for Microgrid Protection System with Central
Protection Unit,” IEEE Transactions on Power Systems, Vol. 28, No. 2,
pp.598-606, May, 2013.
[9] P. P. Barker and R. W. De Mello, “Determining the Impact of Distributed
Generation on Power Systems. I. Radial Distribution Systems,” in Power
Engineering Society Summer Meeting, Vol. 3, pp. 1645–1656, Seattle,
16-20 July, 2000.
[10] X. Wang, “Research on Fault Reconstruction Technology of Micro-grid,”
(in Simplified Chinese), M.S. thesis, China Three Gorges University,
Yichang, P.R.China, 2013.