Method for distributed generation anti-islanding protection based on singular value decomposition and linear discrimination analysis

被引:17
作者
Marchesan, G. [1 ]
Muraro, M. R. [1 ]
Cardoso, G., Jr. [1 ]
Mariotto, L. [1 ]
da Silva, C. D. L. [1 ]
机构
[1] Univ Fed Santa Maria, Santa Maria, RS, Brazil
关键词
Anti-islanding protection; Frequency oscillation; Distributed generation; Passive protection; PATTERN-RECOGNITION APPROACH; TRANSIENT SIGNALS; DESIGN;
D O I
10.1016/j.epsr.2015.08.025
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Anti-islanding protection is one of the most important requirements for the connection of distributed generators in power systems. This paper proposes an algorithm to detect unintentional islanding in power systems with distributed generation. It is based on the singular value decomposition and linear discrimination analysis to differentiate frequency oscillations in synchronous generators caused by islanding from those caused by non-islanding events. The algorithm requires a very low number of mathematical operations, which is suitable for relay purposes. This is possible because most of the operations are in the training process and are made off-line. The performance of the proposed algorithm is evaluated for different scenarios and load conditions in IEEE 34 Node Test Feeder. The algorithm is able to detect islanding with active power mismatch of 1.6% of DG nominal power. The pattern recognition also prevents undue tripping, ensuring great robustness for the method. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码:124 / 131
页数:8
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