Study on The Key Technologies of On-line Monitoring of Transformer Winding Deformation Based on Short-circuit Reactance Analysis

• Autorzy: Rui C. , Yongfen L. , Yanming L. , Yu S. , Ling R. , Wei L.

Warianty tytułu

PL

Technologie monitorowania deformacji uzwojeń transformatora bazujące na analizie reaktancji zwarciowej

• Języki publikacji: EN

Abstrakty

EN

The research about on-line monitoring of transformer winding deformation based on Short-Circuit Reactance is studied, then a method is put forward to calculate the leakage reactance of power transformer quickly. The equivalent resistance can be got from the ratio of voltage difference and current at the peak of current. Also, the equivalent inductance can be got from the ratio of voltage difference and current differential when current is zero. At the same time, it is helpful for improving the resolution of the algorithm to the maximum precision of AD acquisition card by magnifying the voltage difference of primary and secondary voltage before being gathered to AD card. The system designed by the two technologies above is tested on the laboratory platform and a criterion is proposed to help to judge the state of winding. The article provides an effective method to monitor on-line monitor the winding deformation of transformer.

PL

W artykule przedstawiono metodę monitorowania w trybie on-line deformacji uzwojeń transformatora. Do analizy wykorzystano pomiar reaktancji w stanie krótkotrwałego zwarcia. Określana jest też zastępcza rezystancja i indukcyjność uzwojenia. Badania eksperymentalne potwierdziły skuteczność metody.

Słowa kluczowe

EN

winding deformation; on-line monitoring; short-circuit; leakage reactances of the windings

PL

uzwojenie transformatora; deformacja uzwojenia; reaktancja zwarciowa

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Przegląd Elektrotechniczny
• Rocznik: 2013
• Tom: R. 89, nr 9
• Strony: 302--305
• Opis fizyczny: Bibliogr. 12 poz., rys.,tab.

Twórcy

autor

Rui C.

• School of Electrical Engineering, Xi’an Jiaotong University

autor

Yongfen L.

• School of Electrical Engineering, Xi’an Jiaotong University

autor

Yanming L.

• School of Electrical Engineering, Xi’an Jiaotong University

autor

Yu S.

• Testing & Research Institute of Hubei Electric Power Company

autor

Ling R.

• Testing & Research Institute of Hubei Electric Power Company

autor

Wei L.

• Testing & Research Institute of Hubei Electric Power Company

Bibliografia

• [1] Wang Meng-yun, Xue Chen-dong. Statistic Analysis of Transformer’s Faults and Defects at Voltage 110 kV and Above Between 1995 and 1999[J]. Electrical Equipment, 2001(3):11~19.
• [2] Wang Meng-yun. Statistic Analysis of National Ultrahigh Transformer, Current Transformer Faults and Defects Between 2000 and 2001[J]. Electrical Equipment, 2002(12):1~6.
• [3] Wang Meng-yun. Statistic Analysis of Transformer’s Faults and Defects of State Grid Between 2002 and 2003( First Part )[J]. Electrical Equipment, 2004(10):20~25.
• [4] Wang Meng-yun. Statistic Analysis of Transformer’s Faults and Defects at Voltage 110 kV and Above in 2004[J]. Electrical Equipment, 2005(11):31~37.
• [5] Wang Meng-yun. Statistic Analysis of Transformer’s Faults and Defects at Voltage 110 (60)kV and Above in 2005[J]. Electrical Equipment, 2006(11):99~102.
• [6] Xu Da-ke. On-line Monitoring Technology of Transformer Winding Deformation Based on Short-Circuit Reactance[D]. Xi'an Jiaotong University PhD thesis, 2001.
• [7] XU Da-ke, JI Sheng-chang, LI Yan-ming. A theoretical Research on On-line Monitoring of Winding Deformation of Power Transformer[J] . High Voltage Engineering, 2000, 26(3):16-18.
• [8] Ernesto Arri. Diagnosis of the State of Power Transformer Windings by On-Line Measurement of Stray Reactance. IEEE Transactions On Instrument And Measurement[J], VOL. 42, No. 2, APRIL, 1993.
• [9] R. M. Sharkawy, T. K. Abdel-Galil, R. S. Mangoubi, etc.. Diagnosis of the State of Power Transformer Windings by On- Line Measurement of Stray Reactance[J]. IEEE Transactions on INSTRUMENTATION AND MEASUREMENT. 1993,42(2):372-378.
• [10] Hao Zhi-guo, Zhang Bao-hui, Li Peng, Gao Jing, Wang Qiang. Study on On-line Detecting of Transformer Winding Deformation Based on Parameter Identification of Leakage Inductance[J]. High Voltage Engineering, 2006，11(32)：67~70.
• [11] Yan Zhi-an, Cui Xin-yi, Su Shao-ping. Electromechanics (the second edition) [M]. Xi’an Jiaotong University Press. 2006.
• [12] Hou Yuan-bin, Wang Mei, Wang Li-qi. System identification and MATLAB simulation[M]. Beijing: Science Press. 2004.