NDLI: A hybrid micro grid islanding detection method

Content Provider	IEEE Xplore Digital Library
Author	Mohiti, M. Mahmoodzadeh, Z. Vakilian, M.
Copyright Year	2013
Description	Author affiliation: Electr. Eng. Dept., Sharif Univ. of Technol., Tehran, Iran (Mohiti, M.; Mahmoodzadeh, Z.; Vakilian, M.)
Abstract	Islanding detection is a great challenge in connecting distributed generation (DG) in electrical power systems. Islanding detection methods are categorized into three groups, i.e., communication based methods, active, and passive methods. Communication based methods are established upon communication between utilities and DGs and have the inconvenience of being expensive and are limited in use. Active methods perturb the system with a disturbance and the system response to the disturbance is analyzed. Although, these methods have small Non Detection Zone, (NDZ) they degrade the power quality. Passive methods monitor one of the grid variables. Their implementation is easy but their NDZ is large. This paper proposes a hybrid islanding detection method which uses voltage unbalance (VU) and high-frequency (HF) impedance. The proposed method merges the advantages of both active and passive techniques. In addition, since the active method used in this paper does not change any of the system variables as a disturbance, it will not lead to any instability. To test the proposed method, UL1741 test system is simulated in PSCAD/EMTDC and the simulation results indicate that the proposed method can identify islanding in 32ms (2 cycles) and it does not mal-operate while other system events like faults and switchings.
Starting Page	342
Ending Page	347
File Size	883107
Page Count	6
File Format	PDF
e-ISBN	9781479928033
DOI	10.1109/EEEIC-2.2013.6737933
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-11-01
Publisher Place	Poland
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Band-pass filters Voltage measurement Impedance measurement Inveter based dispersed generators Islanding detection Switches Frequency measurement Hybrid islanding detection methods Impedance Distributed networks Power harmonic filters
Content Type	Text
Resource Type	Article

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