An Effective Index for Islanding Detection Based on Fast Discrete S-Transform
Passive methods of islanding detection have the advantage of not perturbing the system, but they suffer from large Non-Detection Zone (NDZ) and unpredictable detection time. In this paper, a new passive scheme for islanding detection, based on estimating a new index derived from summation of impedan...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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VSB-Technical University of Ostrava
2019-01-01
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| Series: | Advances in Electrical and Electronic Engineering |
| Subjects: | |
| Online Access: | http://advances.utc.sk/index.php/AEEE/article/view/3340 |
| _version_ | 1797826945148256256 |
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| author | Solgun Salimi Amangaldi Koochaki Amin Hajizadeh |
| author_facet | Solgun Salimi Amangaldi Koochaki Amin Hajizadeh |
| author_sort | Solgun Salimi |
| collection | DOAJ |
| description | Passive methods of islanding detection have the advantage of not perturbing the system, but they suffer from large Non-Detection Zone (NDZ) and unpredictable detection time. In this paper, a new passive scheme for islanding detection, based on estimating a new index derived from summation of impedance values in all frequencies along the time at the Point of Common Coupling (PCC), is introduced using Fast Discrete S-Transform (FDST) method. The proposed method maintains both time and frequency information and as a result, helps to decrease the detection time. A frequency dependent model is proposed for characterizing the interconnection changes when islanding happens. The Cumulative Impedance Index (CII) is proposed to discriminate between islanding condition and normal operation. This technique is combined with under/over voltage protection method to decrease NDZ. Simulations for different conditions of normal and islanding operations verify the proposed algorithm. In all cases, islanding is detected within 0.01 s, and NDZ is decreased to 1% of power mismatch between local load and Distributed Generator (DG) output. The results demonstrate the capability of the method to islanding detection with minimum delay and least NDZ. |
| first_indexed | 2024-04-09T12:40:24Z |
| format | Article |
| id | doaj.art-0dbb1e47d6a14a269e7dd053086f226a |
| institution | Directory Open Access Journal |
| issn | 1336-1376 1804-3119 |
| language | English |
| last_indexed | 2024-04-09T12:40:24Z |
| publishDate | 2019-01-01 |
| publisher | VSB-Technical University of Ostrava |
| record_format | Article |
| series | Advances in Electrical and Electronic Engineering |
| spelling | doaj.art-0dbb1e47d6a14a269e7dd053086f226a2023-05-14T20:50:12ZengVSB-Technical University of OstravaAdvances in Electrical and Electronic Engineering1336-13761804-31192019-01-0117212713710.15598/aeee.v17i2.33401036An Effective Index for Islanding Detection Based on Fast Discrete S-TransformSolgun Salimi0Amangaldi Koochaki1Amin Hajizadeh2Electrical Engineering Department, Aliabad Katoul Branch, Islamic Azad University, Daneshgah Blvd, Aliabad Katoul, IranElectrical Engineering Department, Aliabad Katoul Branch, Islamic Azad University, Daneshgah Blvd, Aliabad Katoul, IranDepartment of Energy Technology, Aalborg University, Niels Bohrsvej 8, 6700 Esbjerg, DenmarkPassive methods of islanding detection have the advantage of not perturbing the system, but they suffer from large Non-Detection Zone (NDZ) and unpredictable detection time. In this paper, a new passive scheme for islanding detection, based on estimating a new index derived from summation of impedance values in all frequencies along the time at the Point of Common Coupling (PCC), is introduced using Fast Discrete S-Transform (FDST) method. The proposed method maintains both time and frequency information and as a result, helps to decrease the detection time. A frequency dependent model is proposed for characterizing the interconnection changes when islanding happens. The Cumulative Impedance Index (CII) is proposed to discriminate between islanding condition and normal operation. This technique is combined with under/over voltage protection method to decrease NDZ. Simulations for different conditions of normal and islanding operations verify the proposed algorithm. In all cases, islanding is detected within 0.01 s, and NDZ is decreased to 1% of power mismatch between local load and Distributed Generator (DG) output. The results demonstrate the capability of the method to islanding detection with minimum delay and least NDZ.http://advances.utc.sk/index.php/AEEE/article/view/3340discrete s-transformimpedance deviationnon-detection zonepassive islanding detection. |
| spellingShingle | Solgun Salimi Amangaldi Koochaki Amin Hajizadeh An Effective Index for Islanding Detection Based on Fast Discrete S-Transform Advances in Electrical and Electronic Engineering discrete s-transform impedance deviation non-detection zone passive islanding detection. |
| title | An Effective Index for Islanding Detection Based on Fast Discrete S-Transform |
| title_full | An Effective Index for Islanding Detection Based on Fast Discrete S-Transform |
| title_fullStr | An Effective Index for Islanding Detection Based on Fast Discrete S-Transform |
| title_full_unstemmed | An Effective Index for Islanding Detection Based on Fast Discrete S-Transform |
| title_short | An Effective Index for Islanding Detection Based on Fast Discrete S-Transform |
| title_sort | effective index for islanding detection based on fast discrete s transform |
| topic | discrete s-transform impedance deviation non-detection zone passive islanding detection. |
| url | http://advances.utc.sk/index.php/AEEE/article/view/3340 |
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