Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Wen, Yuanfang"'
Publikováno v:
Journal of Applied Physics; Sep2009, Vol. 106 Issue 6, p063304-063309, 5p, 1 Color Photograph, 2 Diagrams, 3 Graphs
Publikováno v:
IEEE Transactions on Power Delivery. 26:1092-1100
A three-dimensional computation model of UHVDC has been designed, which is used to offer higher accuracy in the assessment of reradiation interference protecting distance between radio station and UHV power lines. The model is excited by vertically p
Autor:
Chengke Zhou, Wen Yuanfang
Publikováno v:
IEEE Transactions on Power Delivery. 20:1441-1446
This paper presents experimental investigations into the principle, connection schemes, and the use of a metal oxide varistor (MOV) in transformer winding inner protection. Experiments have been carried out on model transformer and on practical extre
Publikováno v:
2006 International Conference on Power System Technology.
This paper introduces absolute measuring method, simple relative method in common use and new synthetical relative method (SRM) [1] on on-line monitoring. From principle of method and applied effect in practice, SRM can settle stability and reliabili
Publikováno v:
2006 5th International Power Electronics and Motion Control Conference.
Two novel methods, digital calculation based on Callahan algorithm and dynamic simulation based on MATLAB/SIMULINK software, are proposed in this paper to study the electromagnetic transient process caused by asynchronous energization of electric pow
Publikováno v:
Proceedings of 2001 International Symposium on Electrical Insulating Materials (ISEIM 2001). 2001 Asian Conference on Electrical Insulating Diagnosis (ACEID 2001). 33rd Symposium on Electrical and Electronic Insulating Materials and Applications in System.
This paper studies the selection and evaluation for fault feature parameters of electric power equipment. Based on the fuzzy set theory, fuzzy criterion and fuzzy constellation clustering index for fault diagnostic parameters validity of electric pow
Publikováno v:
Proceedings of 2001 International Symposium on Electrical Insulating Materials (ISEIM 2001). 2001 Asian Conference on Electrical Insulating Diagnosis (ACEID 2001). 33rd Symposium on Electrical and Electronic Insulating Materials and Applications in System.
On the basis of a number of the multi-stress aging experimental analysis, by means of the characteristic points of the resistive leakage current-time curves and by using the similarity condition, a method for the lifetime prediction of MOV is present
Publikováno v:
Proceedings of 2001 International Symposium on Electrical Insulating Materials (ISEIM 2001). 2001 Asian Conference on Electrical Insulating Diagnosis (ACEID 2001). 33rd Symposium on Electrical and Electronic Insulating Materials and Applications in System.
In this paper, the inner protection effect of MOVs parallel to multi-section of continuous windings is studied by testing. A principle and method of the protection of transformer longitudinal insulation are also presented. This paper introduces the l
Publikováno v:
Proceedings of 2001 International Symposium on Electrical Insulating Materials (ISEIM 2001). 2001 Asian Conference on Electrical Insulating Diagnosis (ACEID 2001). 33rd Symposium on Electrical and Electronic Insulating Materials and Applications in System.
It is an effective approach to combine state signal processing with fuzzy mathematics for recognizing fuzziness and randomness clearly. This paper shows how the fuzzy membership functions are obtained from results of signal processing of fault diagno
Publikováno v:
Proceedings of 2001 International Symposium on Electrical Insulating Materials (ISEIM 2001). 2001 Asian Conference on Electrical Insulating Diagnosis (ACEID 2001). 33rd Symposium on Electrical and Electronic Insulating Materials and Applications in System.
In this paper, the characteristics of corona current of a single insulator under high voltage is studied in different methods. The results show that the characteristics of corona current are different with their status. From these characteristics, an