A simple method to detect internal and external short-circuit faults, classify and locate different internal faults in transformers

被引:4
作者
Ahmadi, Hossein [1 ]
Vahidi, Behrooz [1 ]
Foroughi Nematollahi, Amin [1 ]
机构
[1] Amirkabir Univ Technol, Dept Elect Engn, Tehran, Iran
关键词
Power transformer monitoring; Finite element method (FEM); Internal and external short-circuit faults; FINITE-ELEMENT; RELAY;
D O I
10.1007/s00202-020-01122-3
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In new power systems, transformer monitoring and on-time detection of internal faults in power transformers are of great importance because if these faults are not identified on-time, the lifetime of the transformer might be reduced, the transformer might be completely disconnected, and network reliability might decrease. In this paper, a new method is proposed to detect internal and external short-circuit faults. It also allows us to classify and locate different internal short-circuit faults offline in power transformers. The proposed method is based on creating a locus curve of voltage-current difference (Delta V - I) for all three phases of the transformer. This method can be implemented simply without requiring special equipment and only through monitoring terminal quantities of the transformer. In order to investigate the behavior of transformers in the presence of internal short-circuit fault, the finite element method is used. By investigating variations of locus diagrams concerning to the normal state, fault type and fault location are determined. The proposed method is applied to a distribution transformer white Yzn5 connection successfully. Simulation results verify the capability of the proposed method in transformer monitoring.
引用
收藏
页码:825 / 836
页数:12
相关论文
共 35 条
  • [1] Modeling and characterization of transformers internal faults using finite element and discrete wavelet transforms
    Abed, N. Y.
    Mohammed, O. A.
    [J]. IEEE TRANSACTIONS ON MAGNETICS, 2007, 43 (04) : 1425 - 1428
  • [2] A Novel Online Technique to Detect Power Transformer Winding Faults
    Abu-Siada, A.
    Islam, Syed
    [J]. IEEE TRANSACTIONS ON POWER DELIVERY, 2012, 27 (02) : 849 - 857
  • [3] Aggarwal RK, 1998, DIGITAL SIMULATION T
  • [4] Babiy M., 2011, 2011 IEEE Electrical Power & Energy Conference (EPEC), P158, DOI 10.1109/EPEC.2011.6070187
  • [5] Bartley W.H., INTERNATIONAL, VVolume 33, P1
  • [6] A TRANSFORMER MODEL FOR WINDING FAULT STUDIES
    BASTARD, P
    BERTRAND, P
    MEUNIER, M
    [J]. IEEE TRANSACTIONS ON POWER DELIVERY, 1994, 9 (02) : 690 - 699
  • [7] Bertrand P, 1993, 12 INT C EL DISTR, V1, P1
  • [8] Bhide Ravindra, 2010, 2010 IEEE Power & Energy Society General Meeting, DOI 10.1109/PES.2010.5589661
  • [9] A new technique for transformer protection based on transient detection
    Bo, ZQ
    Weller, G
    Lomas, T
    [J]. IEEE TRANSACTIONS ON POWER DELIVERY, 2000, 15 (03) : 870 - 875
  • [10] Craciunescu A, 2012, PRZ ELEKTROTECHNICZN, V88, P108