A Hybrid Algorithm for Recognition of Power Quality Disturbances

被引:17
作者
Kaushik, Rajkumar [1 ]
Mahela, Om Prakash [2 ]
Bhatt, Pramod Kumar [1 ]
Khan, Baseem [3 ]
Padmanaban, Sanjeevikumar [4 ]
Blaabjerg, Frede [5 ]
机构
[1] Amity Univ, Dept Elect Engn, Jaipur 303002, Rajasthan, India
[2] Rajasthan Rajya Vidyut Prasaran Nigam Ltd, Power Syst Planning Div, Jaipur 302005, Rajasthan, India
[3] Hawassa Univ, Dept Elect & Comp Engn, Hawassa 05, Ethiopia
[4] Aalborg Univ, Ctr Biol & Green Engn, Dept Energy Technol, DK-6700 Esbjerg, Denmark
[5] Aalborg Univ, Villum Investigator & Prof Power Elect & Drives, DK-6700 Esbjerg, Denmark
来源
IEEE ACCESS | 2020年 / 8卷
关键词
Transforms; Signal processing algorithms; Power quality; Mathematical model; Feature extraction; Standards; Indexes; Hilbert transform; rule based decision tree; power quality disturbance; power quality index; Stockwell transform; time location index; S-TRANSFORM; FEATURE-SELECTION; DECISION TREE; CLASSIFICATION; ENHANCEMENT;
D O I
10.1109/ACCESS.2020.3046425
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
An algorithm making use of hybrid features of Hilbert transform (HT) and Stockwell transform (ST) to identify the single-stage and multiple (multi-stage) power quality disturbances (PQDs) is introduced in this manuscript. A power quality index (PI) and time location index (TLI), based on the features computed from the voltage signal by the use of HT and ST are proposed for recognition of the PQDs. Four features extracted from the PI and TLI are considered for classification of the PQDs achieved using decision tree driven by rules. The algorithm is tested on the PQDs generated with the help of mathematical models (in conformity with standard IEEE-1159). Performance is evaluated on 100 data set of every disturbance computed by varying various parameters, and efficiency is found to be greater than 99%. It is established that an algorithm is effective for recognition of PQ events with an efficiency greater than 98% even in the presence of high-level noise. Algorithm is faster compared to many reported techniques and scalable for application to voltages of all range. Results are validated through comparison with the results of the algorithms reported in the literature. Performance of the algorithm is effectively validated on the practical utility network. This algorithm can be effectively implemented for designing the power quality (PQ) monitoring devices for the utility grids.
引用
收藏
页码:229184 / 229200
页数:17
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