Zobrazeno 1 - 10
of 91
pro vyhledávání: '"Zanji Wang"'
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 23:1164-1173
The absorption characteristics of high-temperature vulcanized (HTV) silicone rubber (SR) in deionized water, NaCl solution, and HNO 3 solution, as well as the influence of immersion in these liquids on HTV SR, were investigated. The effects of temper
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 23:410-417
This study focuses on the moisture absorption, moisture desorption, and moisture-induced electrical performances of high-temperature vulcanized (HTV) silicone rubber (SR). The influences of some parameters, such as filler (fumed silica and aluminum h
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 22:3357-3365
This study focuses on absorption and permeation of deionized water and typical aqueous solutions of high-temperature vulcanized (HTV) silicone rubber (SR). The influences of some parameters, such as, filler (fumed silica and aluminum hydroxide) chara
Publikováno v:
Mao, X, Wang, Z, Wang, Z & Jarman, P 2018, Accurate Estimating Algorithm of Transfer Function for Transformer FRA Diagnosis . in 2018 IEEE Power & Energy Society General Meeting .
Frequency response analysis (FRA) is an effective tool to detect winding deformation. If variation occurs to the FRA trace, a fault may be indicated. A new method to estimate the transfer function from FRA measurement results on largebandwidth is pro
Publikováno v:
Science China Technological Sciences. 56:1322-1329
Under dynamic conditions, the signals of power system have time-varying magnitude and frequency, which might lead to considerable errors for synchrophasor measurement. The traditional discrete Fourier transform (DFT) based algorithms used in Phasor M
Autor:
Yi-ming Zheng, Zanji Wang
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 20:564-570
In order to complete the broadband simulation model of power transformer, and establish a systematic and complete model for studying fast transient interaction between transformer and power system, the frequency dependent characteristics of dielectri
Autor:
Yu Yang, Zanji Wang
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 19:1782-1790
In this paper, an analysis method of natural frequencies and corresponding oscillation modes for power transformer windings is proposed. Firstly, the natural frequencies and their response factors are calculated based on the structure and parameters
Publikováno v:
IEEE Transactions on Magnetics. 45:3223-3227
Adjacent extra magnets can induce an additional impedance to an amorphous wire. We have studied the additional impedance passing through a magnetic ring and found that it is related to the electromagnetic characteristics, shapes, and locations of the
Autor:
Zanji Wang, Yu Yang
Publikováno v:
Science in China Series E: Technological Sciences. 52:2597-2604
There are some difficulties in using multi-transmission-line (MTL) model for wide band modeling of whole windings of the large power transformer. In this paper, the normalized MTL model is firstly derived, with which not only the difficulty of modeli
Publikováno v:
IEEE Transactions on Applied Superconductivity. 17:2018-2021
A novel combined device is presented in this paper. It connects with two independent power systems by two groups transformers, which are in series with the systems. Dynamic voltage regulation is the fundamental function of the combined device. It can