Modified discrete Fourier transform algorithm for protection of shunt compensated distribution line
Introduction. The response time of the relay plays vital role when fault occurs on the line. Various algorithms are adopted to increase the sampling rate of the relay which, in turn, improves the response time. Methods. Discrete Fourier transform and modified discrete Fourier transform are the two a...
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| Format: | Article |
| Language: | English |
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National Technical University "Kharkiv Polytechnic Institute"
2023-03-01
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| Series: | Electrical engineering & Electromechanics |
| Subjects: | |
| Online Access: | http://eie.khpi.edu.ua/article/view/261927/270114 |
| _version_ | 1811154274140291072 |
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| author | A. Jani V. H. Makwana |
| author_facet | A. Jani V. H. Makwana |
| author_sort | A. Jani |
| collection | DOAJ |
| description | Introduction. The response time of the relay plays vital role when fault occurs on the line. Various algorithms are adopted to increase the sampling rate of the relay which, in turn, improves the response time. Methods. Discrete Fourier transform and modified discrete Fourier transform are the two algorithms used to calculate the fundamental frequency phasor of the signal required by the relay to initiate trip command. It is known that discrete Fourier transform takes four to five cycles to produce the fundamental frequency phasor but it fails to deal with the decaying DC component. On the other hand, modified discrete Fourier transform improves the response time by removing the decaying DC component along with the other harmonics in just one cycle and a few samples. The aim of this paper is to cover discrete Fourier transform and modified discrete Fourier transform algorithms to analyze the performance of the three overcurrent and one earth fault relaying scheme for different types of faults occurring in the distribution system. Methodology. The concept of three overcurrent and one earth fault scheme is also explained in this paper for protection of shunt-compensated distribution system. The scheme is designed for variable power factor. MATLAB/Simulink is used as the software tool to validate the results obtained for various types of faults occurring in the system. The results are represented graphically to illustrate the time of response of the protection scheme when shunt compensators are connected at the receiving end of distribution network.
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| first_indexed | 2024-04-10T04:13:59Z |
| format | Article |
| id | doaj.art-9d7b7a4b75c444fd99954be5f004a647 |
| institution | Directory Open Access Journal |
| issn | 2074-272X 2309-3404 |
| language | English |
| last_indexed | 2024-04-10T04:13:59Z |
| publishDate | 2023-03-01 |
| publisher | National Technical University "Kharkiv Polytechnic Institute" |
| record_format | Article |
| series | Electrical engineering & Electromechanics |
| spelling | doaj.art-9d7b7a4b75c444fd99954be5f004a6472023-03-12T08:45:08ZengNational Technical University "Kharkiv Polytechnic Institute"Electrical engineering & Electromechanics2074-272X2309-34042023-03-012636810.20998/2074-272X.2023.2.10Modified discrete Fourier transform algorithm for protection of shunt compensated distribution lineA. Jani0https://orcid.org/0000-0002-6544-2980V. H. Makwana1https://orcid.org/0000-0002-6302-7353Gujarat Technological University, IndiaGH Patel College of Engineering and Technology, IndiaIntroduction. The response time of the relay plays vital role when fault occurs on the line. Various algorithms are adopted to increase the sampling rate of the relay which, in turn, improves the response time. Methods. Discrete Fourier transform and modified discrete Fourier transform are the two algorithms used to calculate the fundamental frequency phasor of the signal required by the relay to initiate trip command. It is known that discrete Fourier transform takes four to five cycles to produce the fundamental frequency phasor but it fails to deal with the decaying DC component. On the other hand, modified discrete Fourier transform improves the response time by removing the decaying DC component along with the other harmonics in just one cycle and a few samples. The aim of this paper is to cover discrete Fourier transform and modified discrete Fourier transform algorithms to analyze the performance of the three overcurrent and one earth fault relaying scheme for different types of faults occurring in the distribution system. Methodology. The concept of three overcurrent and one earth fault scheme is also explained in this paper for protection of shunt-compensated distribution system. The scheme is designed for variable power factor. MATLAB/Simulink is used as the software tool to validate the results obtained for various types of faults occurring in the system. The results are represented graphically to illustrate the time of response of the protection scheme when shunt compensators are connected at the receiving end of distribution network. http://eie.khpi.edu.ua/article/view/261927/270114modified discrete fourier transformthree overcurrent and one earth fault protection schemeshunt compensationdistribution systemresponse time of relay |
| spellingShingle | A. Jani V. H. Makwana Modified discrete Fourier transform algorithm for protection of shunt compensated distribution line Electrical engineering & Electromechanics modified discrete fourier transform three overcurrent and one earth fault protection scheme shunt compensation distribution system response time of relay |
| title | Modified discrete Fourier transform algorithm for protection of shunt compensated distribution line |
| title_full | Modified discrete Fourier transform algorithm for protection of shunt compensated distribution line |
| title_fullStr | Modified discrete Fourier transform algorithm for protection of shunt compensated distribution line |
| title_full_unstemmed | Modified discrete Fourier transform algorithm for protection of shunt compensated distribution line |
| title_short | Modified discrete Fourier transform algorithm for protection of shunt compensated distribution line |
| title_sort | modified discrete fourier transform algorithm for protection of shunt compensated distribution line |
| topic | modified discrete fourier transform three overcurrent and one earth fault protection scheme shunt compensation distribution system response time of relay |
| url | http://eie.khpi.edu.ua/article/view/261927/270114 |
| work_keys_str_mv | AT ajani modifieddiscretefouriertransformalgorithmforprotectionofshuntcompensateddistributionline AT vhmakwana modifieddiscretefouriertransformalgorithmforprotectionofshuntcompensateddistributionline |