A Hybrid Islanding Detection Method For Distribution Systems

  • Aref Pouryekta Power Quality Research Group, Department of Electrical Power Engineering, University Tenaga Nasional, 43000, Kajang, Selangor, Malaysia.
  • Vigna K. Ramachandaramurthy Power Quality Research Group, Department of Electrical Power Engineering, University Tenaga Nasional, 43000, Kajang, Selangor, Malaysia
Keywords: Islanding detection, communication method, distributed generation, distribution system, hybrid method, micro grid, passive methods.

Abstract

Continuous operation of Renewable Energy Systems (RES) is achieved either in grid-connected mode or in autonomous mode in the form of Islands or Microgrid, which has predefined boundaries. Thus, distribution systems should be capable of detecting islanding condition for smooth transition to an Islanded mode. In this article, a hybrid islanding detection method, which combines remote and passive methods, is proposed. Distributed Generation (DG) units can be in the form of inverter interfaced or synchronous based generators and when used together can cause difficulti¥es in islanding detection such as delay or inaccurate detection. The number of DG units in the network also affects the accuracy of islanding detection. Thus a new hybrid method, which is based on communication and passive methods, is proposed to overcome this problem. The accuracy and effectiveness of the proposed hybrid method is investigated using PSCAD software. The proposed detection method features an improvement in detection accuracy.

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Author Biographies

Aref Pouryekta, Power Quality Research Group, Department of Electrical Power Engineering, University Tenaga Nasional, 43000, Kajang, Selangor, Malaysia.

Aref Pouryekta, corresponding author, received his B.Sc. degree and M.Sc. degree in Electrical Engineering from Iran, in 2006 and 2010 respectively. Currently, he is pursuing his Ph.D. at University Tenaga Nasional, Malaysia. His research interests are renewable energy integration, microgrid stability and power system modeling. Email: aref. pouryekta@gmail.com

Vigna K. Ramachandaramurthy, Power Quality Research Group, Department of Electrical Power Engineering, University Tenaga Nasional, 43000, Kajang, Selangor, Malaysia

Vigna K. Ramachandaramurthy completed his PhD at UMIST, UK in 2001. He is presently a professor and Heads the Power Quality Research Group in University Tenaga Nasional, Malaysia. His main research interests are power system studies, power system protection, power quality, renewable energy integration and grid impact of distributed generation.

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Published
2018-09-01
Section
Articles