Warianty tytułu
Interruptions in the power supply to equipment in systems with low power UPS
Języki publikacji
Abstrakty
Omówiono potencjalne przyczyny przerw w zasilaniu chronionych odbiorników spowodowane zmianą stanu zasilacza UPS małej mocy. Zwrócono uwagę na zjawiska występujące podczas zmiany stanu zasilacza UPS z podstawowego w autonomiczny na skutek awarii sieci zasilającej. Przedyskutowano efekty prądu włączenia transformatora głównego oraz opóźnioną reakcję rozłącznika głównego w stanach przejściowych. Zaproponowano działania zmierzające do wyeliminowania potencjalnych przyczyn przerw w zasilaniu odbiorników.
The paper provides an overview of the possible causes of interruptions in the power supply of equipment caused by change in operation modę of the UPS unit. Phenomena occurring while the UPS unit changes from basie to autonomous operation because of power failure are pointed out. In particular the effects of the magnetizing inrush current of the main transformer and delayed reaction of the main relay during transient states are discussed. Actions aimed to eliminate of the possible causes of interruptions in the power supply of equipment are proposed.
Rocznik
Tom
Strony
10-18
Opis fizyczny
Bibliogr. 26 poz., rys., tab., wykr.
Twórcy
autor
- Spółdzielnia Pracy Elektroniki i Informatyki ETA, Poznań
Bibliografia
- [1] Polska Norma PN-EN 62040-1-1:2003 (U).: Bezprzerwowe systemy zasilania (UPS) - Część 1-1: Wymagania ogólne i wymagania dotyczące bezpieczeństwa UPS stosowanych w miejscach dostępnych dla operatorów.
- [2] Polska norma PN-EN 62040-3:2005.: Systemy bezprzerwowego zasilania (UPS) Część 3: Metoda określania właściwości i wymagania dotyczące badań.
- [3] Lisowski P.: Zasilacze awaryjne UPS małej mocy - część I. Przegląd Telekomunikacyjny, nr 12/2005.
- [4] Lisowski P.: Zasilacze awaryjne UPS małej mocy - część II. Przegląd Telekomunikacyjny, nr 1/2006.
- [5] Han-Sheng Lee, Leung C.H., Shi J., Shih-Chia Chang, Lorincz S., Nedelescu L.: Integrated microrelays: concept and initial results. Journal of Microelectromechanical Systems, Volume 11, Issue 2, April 2002, pp. 147-153.
- [6] Asghar S.J.: Elimination of inrush current of transformers and distribution lines. Proceedings of the 1996 International Conference on Power Electronics, Drives and Energy Systems for Industrial Growth, Volume 2, 8-11 Jan. 1996, pp. 976-980.
- [7] Shimizu H., Mutsuura K., Yokomizu Y., Matsumura T.: Inrush-current-limiting with high T/sub c/Superconductor. IEEE Transactions on Applied Superconductivity, Volume 15, Part 2, June 2005, pp. 2071-2073.
- [8] Chen J.-R., Liang T.-J., Cheng C.-K., Chen S.-D., Lin R.-L., Yang W.-H.: Asymmetrical winding configuration to reduce inrush current with appropriate short-circuit current in transformer. IEE Proceedings - Electric Power Applications, Volume 152, Issue 3, 6 May 2005, pp. 605-611.
- [9] Yamada H., Hiraki E., Tanaka T.: A Novel Method of Suppressing the Inrush Current of Transformers Using a Series-Connected Voltage-Source PWM Converter. International Conference on Power Electronics and Drives Systems, Volume 1, 28-01 Nov. 2005, pp. 280-285.
- [10] Juei-Lung Shyu: A Novel Control Strategy to Reduce Transformer Inrush Currents by Series Compensator. International Conference on Power Electronics and Drives Systems, Volume 2, 28-01 Nov. 2005, pp. 1283-1288.
- [11] Yufeng Hu, Deshu Chen, Xianggen Yin, Zhe Zhang: A novel theory for identifying transformer magnetizing inrush current. Transmission and Distribution Conference and Exposition, 2003 IEEE PES, Volume 1, 7-12 Sept. 2003, pp. 274-278.
- [12] Xiaotan Zhao, Jianyun Chai, Pengsheng Su: Identification of magnetizing inrush currents of power transformers based on features of flux locus. Sixth International Conference on Electrical Machines and Systems, vol. 1, 9-11 Nov. 2003, pp. 317-320.
- [13] Sun P., Zhang J.F., Zhang D.J., Wu Q.H., Potts S.: Morphological identification of transformer magnetising inrush current. Electronics Letters, vol. 38, Issue 9, 25 April 2002, pp. 437-438.
- [14] Swift G., Zhiying Zhang, McLaren P.: Inrush restraint algorithms for transformer differential relays. WESCANEX 95. Communications, Power, and Computing. Conference Proceedings. IEEE, vol. 2, 15-16 May 1995, pp. 321-328.
- [15] Pihler J., Grcar B., Dolinar D.: Improved operation of power transformer protection using artificial neural network. IEEE Transactions on Power Delivery, vol. 12, Issue 3, July 1997, pp. 1128-1136.
- [16] Zaman M.R., Rahman M.A.: Experimental testing of the artificial neural network based protection of power transformers. IEEE Transactions on Power Delivery, vol. 13, Issue 2, April 1998, pp. 510-517.
- [17] Shaohua Jiao, Wanshun Liu, Peipu Su, Qixun Yang, Zhenhua Zhang, Jianfei Liu: A new principle of discrimination between inrush current and internal short circuit of transformer based on fuzzy sets. International Conference on Power System Technology Proceedings. Vol. 2, 18-21 Aug. 1998, pp. 1086-1090.
- [18] Tag Eldin, E.M.: A new algorithm for the classification of different transient phenomena in power transformers combining wavelet transforms and fuzzy logic, Proceedings of the 46th IEEE International Midwest Symposium on Circuits and Systems, vol. 3, 27-30 Dec. 2003, pp. 1116-1121.
- [19] Sng Yeow Hong, Wang Qin: A wavelet-based method to discriminate between inrush current and internal fault. International Conference on Power System Technology, Proceedings. Volume 2, 4-7 Dec. 2000 Page(s): 927-931
- [20] Kunakorn A.: Applications of discrete wavelet transform for transformer inrush current detection in protective control scheme. IEEE International Symposium on Communications and Information Technology, vol. 2, 26-29 Oct. 2004, pp. 871-874.
- [21] Wang Zengping, Ma Jing, Xu Yan, Ma Lei: A New Principle of Discrimination between Inrush Current and Internal Fault Current of Transformer Based on Self-Correction Function. The 7th International Power Engineering Conference, 29-02 Nov. 2005, pp. 1-4.
- [22] Shang Guocai, Li Wei: Study of transformer protection based on voltage-current similarity theory. IEEE Power Engineering Society Summer Meeting. Vol. 1, 15-19 July 2001, pp. 622-625.
- [23] Al-Tallaq K.N.: Discrimination between magnetizing inrush and fault currents in single-phase transformers using power method. Large Engineering systems Conference on Power Engineering. 28-30 July 2004, pp. 118-122.
- [24] Mizia W.: Transformatory. Wydawnictwo Politechniki Śląskiej, Gliwice 1998.
- [25] Cheng C.-K., Liang T.-J., Chen J.-R., Chen S.-D., Yang W.-H.: Novel approach to reducing the inrush current of a power transformer. IEE Proceedings - Electric Power Applications, vol. 151, Issue 3, 8 May 2004, pp. 289-295.
- [26] Ling P.C.Y., Basak A.: Investigation of magnetizing inrush current in a single-phase transformer. IEEE Transactions on Magnetics. Vol. 24, Issue 6, Nov 1988, pp. 3217-3222.
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.baztech-article-BWA1-0019-0016