TY - JOUR
T1 - Assessment on Applied Magnetic Properties of Silicon Steel Sheet in UHV Transformer
AU - Zhang, Shuqi
AU - Li, Peng
AU - Xu, Zhengyu
AU - Tang, Hao
AU - Li, Jinzhong
AU - Qiu, Yuzhou
AU - Liu, Xueli
N1 - Publisher Copyright:
© 2017 Chin. Soc. for Elec. Eng.
PY - 2017/9/20
Y1 - 2017/9/20
N2 - IEC 60404 just specified the test methods on magnetic properties of single silicon steel sheet, and it was difficult to meet the requirements of the applied magnetic properties of silicon steel sheet for UHV Transformer. Therefore, applied magnetic properties test system for silicon steel sheet based on iron core model was established, and the characteristics included deep magnetic saturation, DC bias tolerance and repetitive excitation were studied by comparing two kinds of silicon steel sheet iron model. The results show that, the no-load current of Sample II iron core model is significantly greater than Sample I during the range of 100%~115% rated voltage, and harmonic current content together with sound level have same regularities. Moreover, the no-load loss of Sample II iron core model is less than the Sample I under same DC bias current especially when higher than 1.0A. In addition, the no-load current and loss of Sample II iron core model have larger fluctuation ranges during repetitive excitation, but smaller no-load loss change rate before and after the repetitive excitation. In the end, eight assessment index on magnetic properties of silicon steel sheet in UHV transformer were proposed, and results show that applied magnetic properties between Sample I and II iron core has obvious differences. The conclusions provide a new idea for the technical personnel to know the application of magnetic properties of silicon steel sheets well.
AB - IEC 60404 just specified the test methods on magnetic properties of single silicon steel sheet, and it was difficult to meet the requirements of the applied magnetic properties of silicon steel sheet for UHV Transformer. Therefore, applied magnetic properties test system for silicon steel sheet based on iron core model was established, and the characteristics included deep magnetic saturation, DC bias tolerance and repetitive excitation were studied by comparing two kinds of silicon steel sheet iron model. The results show that, the no-load current of Sample II iron core model is significantly greater than Sample I during the range of 100%~115% rated voltage, and harmonic current content together with sound level have same regularities. Moreover, the no-load loss of Sample II iron core model is less than the Sample I under same DC bias current especially when higher than 1.0A. In addition, the no-load current and loss of Sample II iron core model have larger fluctuation ranges during repetitive excitation, but smaller no-load loss change rate before and after the repetitive excitation. In the end, eight assessment index on magnetic properties of silicon steel sheet in UHV transformer were proposed, and results show that applied magnetic properties between Sample I and II iron core has obvious differences. The conclusions provide a new idea for the technical personnel to know the application of magnetic properties of silicon steel sheets well.
KW - Applied magnetic properties
KW - Assessment
KW - DC bias tolerance
KW - Deep magnetic saturation
KW - Repetitive excitation
KW - Silicon steel sheet
KW - UHV transformer
UR - https://www.scopus.com/pages/publications/85037808290
U2 - 10.13334/j.0258-8013.pcsee.162558
DO - 10.13334/j.0258-8013.pcsee.162558
M3 - 文章
AN - SCOPUS:85037808290
SN - 0258-8013
VL - 37
SP - 5511
EP - 5518
JO - Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering
JF - Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering
IS - 18
ER -