Pressure wave propagation method for space charge measurement in coaxial geometry

Sun, Yipeng; Zhang, Yewen; Holé, Stephane; Zhu, Zhien; Yang, Liming; Cong, Gao; Cao, Zhiyu; Yu, Enke; Zheng, Xiaojing; Zheng, Feihu; An, Zhenlian

doi:10.1109/tdei.2018.007234

Cited by 5 publications

(2 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It should be noted that both relations are one-dimensional expressions in the thickness direction and are only applicable to the samples with uniform thickness. Other factors should also be introduced in the derivation process for nonuniform samples, such as cables [16]. The one-dimensional relation clearly expresses the integrated space charge distribution in the sample thickness direction, whereas there is only an apparent and integrated net value to represent the specific charge distribution in a specific two-dimensional plane parallel to the electrodes, which does not accurately reflect the true space charge distribution.…”

Section: The Principle and Realization Conditions Of The Pwp Methodsmentioning

confidence: 99%

Analysis of uncertainties in the measurement of the space charge distribution in dielectrics

Pan¹,

Cao²,

Zheng³

et al. 2023

Meas. Sci. Technol.

Self Cite

View full text Add to dashboard Cite

The results obtained by the commonly used space charge distribution measurement methods are frequently apparent and one-dimensional results of a localized area, and there may be random errors caused by various factors. In this work, three factors—sample thickness uniformity, pressure wave intensity uniformity, and space charge distribution uniformity—that may cause measurement uncertainties are examined. The analysis and evaluation of the experimental data are impacted by the measurement uncertainties, which are particularly noticeable in the experiments of semiconductive electrode-flat polyethylene (PE) samples using the laser-induced pressure propagation (LIPP) method. These factors are investigated separately with several auxiliary experiments, including laser beam spot energy distribution measurement and space charge distribution measurements at different measuring positions on the same uniform sample. A clear and intelligible model is developed to discuss the influence of these factors on the uncertainties in the space charge distribution measurement in dielectrics.

show abstract

Section: The Principle and Realization Conditions Of The Pwp Methodsmentioning

confidence: 99%

Analysis of uncertainties in the measurement of the space charge distribution in dielectrics

Pan¹,

Cao²,

Zheng³

et al. 2023

Meas. Sci. Technol.

Self Cite

View full text Add to dashboard Cite

show abstract

“…At present, the experimental research methods for the space charge inside the medium mainly include the pressure wave propagation (PWP) (Sun et al , 2018), the pulsed electro-acoustic (PEA) (Fothergill et al , 2000; Fu and Chen, 2003). A coupling capacitor is located between the signal measurement equipment and the high voltage equipment in the PWP method (Alquie et al , 1981).…”

Section: Introductionmentioning

confidence: 99%

Numerical calculation of transient electric field considering space charge in oil-paper insulation of converter transformers

Xiu

Zhang

Tian

et al. 2021

COMPEL

View full text Add to dashboard Cite

Purpose The purpose of this paper is to develop a numerical simulation method based on the transient upstream finite element method (FEM) and Schottky emission theory to reveal the distribution characteristics of space charge in oil-paper insulation. Design/methodology/approach The main insulation medium of the converter transformer in high voltage direct current transmission is oil-paper insulation. However, the influence of space charge is difficult to be fully considered in the insulation design and simulation of converter transformers. To reveal the influence characteristics of the space charge, this paper proposes a numerical simulation method based on Schottky emission theory and the transient upstream FEM. This method considers the influence of factors, such as carrier mobility, carrier recombination coefficient, trap capture coefficient and diffusion coefficient on the basis of multi-physics field coupling calculation of the electric field and fluid field. Findings A numerical simulation method considering multiple charge states is proposed for the space charge problem in oil-paper insulation. Meanwhile, a space charge measurement platform based on the electrostatic capacitance probe method for oil-paper insulation structure is built, and the effectiveness and accuracy of the numerical simulation method is verified. Originality/value A variety of models are calculated and analyzed by the numerical simulation method in this paper, and the distribution characteristics of the space charge and total electric field in oil-paper insulation medium with single-layer, polarity reversal of plate voltage and double-layer are obtained. The research results of this paper have the guiding significance for the engineering application of oil-paper insulation and the optimal design of converter transformer insulation.

show abstract

Research on the measurement of space charge mobility in liquid dielectric based on the Kerr effect

Zhang

Yang

et al. 2022

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE)

View full text Add to dashboard Cite

Pressure wave propagation method for space charge measurement in coaxial geometry

Cited by 5 publications

References 11 publications

Analysis of uncertainties in the measurement of the space charge distribution in dielectrics

Analysis of uncertainties in the measurement of the space charge distribution in dielectrics

Numerical calculation of transient electric field considering space charge in oil-paper insulation of converter transformers

Research on the measurement of space charge mobility in liquid dielectric based on the Kerr effect

Contact Info

Product

Resources

About