Analyzing Ferroresonance Phenomena in Power Transformers Including Zinc Oxide Arrester and Neutral Resistance Effect
This paper studies the effect of zinc oxide arrester (ZnO) and neutral earth resistance on controlling nonconventional oscillations of the unloaded power transformer. At first, ferroresonance overvoltage in the power system including ZnO is investigated. It is shown this nonlinear resistance can lim...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | Applied Computational Intelligence and Soft Computing |
| Online Access: | http://dx.doi.org/10.1155/2012/525494 |
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| _version_ | 1832558422740959232 |
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| author | Hamid Radmanesh Fathi Seyed Hamid |
| author_facet | Hamid Radmanesh Fathi Seyed Hamid |
| author_sort | Hamid Radmanesh |
| collection | DOAJ |
| description | This paper studies the effect of zinc oxide arrester (ZnO) and neutral earth resistance on controlling nonconventional oscillations of the unloaded power transformer. At first, ferroresonance overvoltage in the power system including ZnO is investigated. It is shown this nonlinear resistance can limit the ferroresonance oscillations but it cannot successfully control these phenomena. Because of the temperature dissipation of ZnO, it can withstand against overvoltage in a short period and after that ferroresonance causes ZnO failure. By applying neutral earth resistance to the system configuration, mitigating ferroresonance has been increased and chaotic overvoltage has been changed to the smoother behavior such as fundamental resonance and periodic oscillation. The simulation results show that connecting the neutral resistance exhibits a great mitigating effect on nonlinear overvoltage. |
| format | Article |
| id | doaj-art-f3ed370f9b5542babb9b031dcb58a415 |
| institution | Kabale University |
| issn | 1687-9724 1687-9732 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Applied Computational Intelligence and Soft Computing |
| spelling | doaj-art-f3ed370f9b5542babb9b031dcb58a4152025-02-03T01:32:32ZengWileyApplied Computational Intelligence and Soft Computing1687-97241687-97322012-01-01201210.1155/2012/525494525494Analyzing Ferroresonance Phenomena in Power Transformers Including Zinc Oxide Arrester and Neutral Resistance EffectHamid Radmanesh0Fathi Seyed Hamid1Electrical Engineering Department, Islamic Azad University, Takestan Branch, Takestan, Ghazvin 1995755681, IranElectrical Engineering Department, Amirkabir University of Technology, Tehran, IranThis paper studies the effect of zinc oxide arrester (ZnO) and neutral earth resistance on controlling nonconventional oscillations of the unloaded power transformer. At first, ferroresonance overvoltage in the power system including ZnO is investigated. It is shown this nonlinear resistance can limit the ferroresonance oscillations but it cannot successfully control these phenomena. Because of the temperature dissipation of ZnO, it can withstand against overvoltage in a short period and after that ferroresonance causes ZnO failure. By applying neutral earth resistance to the system configuration, mitigating ferroresonance has been increased and chaotic overvoltage has been changed to the smoother behavior such as fundamental resonance and periodic oscillation. The simulation results show that connecting the neutral resistance exhibits a great mitigating effect on nonlinear overvoltage.http://dx.doi.org/10.1155/2012/525494 |
| spellingShingle | Hamid Radmanesh Fathi Seyed Hamid Analyzing Ferroresonance Phenomena in Power Transformers Including Zinc Oxide Arrester and Neutral Resistance Effect Applied Computational Intelligence and Soft Computing |
| title | Analyzing Ferroresonance Phenomena in Power Transformers Including Zinc Oxide Arrester and Neutral Resistance Effect |
| title_full | Analyzing Ferroresonance Phenomena in Power Transformers Including Zinc Oxide Arrester and Neutral Resistance Effect |
| title_fullStr | Analyzing Ferroresonance Phenomena in Power Transformers Including Zinc Oxide Arrester and Neutral Resistance Effect |
| title_full_unstemmed | Analyzing Ferroresonance Phenomena in Power Transformers Including Zinc Oxide Arrester and Neutral Resistance Effect |
| title_short | Analyzing Ferroresonance Phenomena in Power Transformers Including Zinc Oxide Arrester and Neutral Resistance Effect |
| title_sort | analyzing ferroresonance phenomena in power transformers including zinc oxide arrester and neutral resistance effect |
| url | http://dx.doi.org/10.1155/2012/525494 |
| work_keys_str_mv | AT hamidradmanesh analyzingferroresonancephenomenainpowertransformersincludingzincoxidearresterandneutralresistanceeffect AT fathiseyedhamid analyzingferroresonancephenomenainpowertransformersincludingzincoxidearresterandneutralresistanceeffect |