An Electric Stress-Pulse Technique for The Measurement of Charges in A Plastic Plate Irradiated by an Electron Beam

Takada, Tatsuo; Maéno, Takashi; Kushibe, H.

doi:10.1109/tei.1987.298914

Cited by 119 publications

(36 citation statements)

References 9 publications

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“…The PEA method was originally conceived for space charge measurements on thin samples between plane parallel electrodes [26], but later it was extended successfully to the coaxial cable geometry [27] using the system shown in Figure 2.A (after [2]): a and b are the inner and outer radii of the insulation, respectively; ρ(r) is the volume space charge density at radius r; s, l, and c are the thickness of the outer semicon, the distance between the outer semicon and the piezoelectric transducer -a polyvinylidene (PVDF) film -and the position of the piezo device, respectively. R and C are respectively the resistance and capacitance of the PEA measurement system, V is the voltage of the DC source, and v p (t) is the time-dependent applied voltage pulse.…”

Section: Pulse-electro Acoustic (Pea) Methodsmentioning

confidence: 99%

A protocol for space charge measurements in full-size HVDC extruded cables

Mazzanti

Chen

Fothergill

et al. 2015

IEEE Trans. Dielect. Electr. Insul.

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This is the accepted version of the paper.This version of the publication may differ from the final published version. Permanent repository link ABSTRACT This position paper, prepared by the IEEE DEIS HVDC Cable Systems TechnicalCommittee, illustrates a protocol recommended for the measurement of space charges in full-size HVDC extruded cables during load cycle qualification tests (either prequalification load cycles or type test load cycles). The protocol accounts for the experimental practices of space charge measurements in the thick insulation of coaxial cables in terms of poling time, depolarization time, heating and cooling of specimens, as well as for the experience gained very recently from such kind of measurements performed in the framework of qualification tests relevant to ongoing HVDC cable system projects. The goal of the protocol is not checking the compliance with any maximum acceptable limit of either space charge or electric field. Rather, this protocol aims at assessing the variation of the electric field profile in the cable insulation wall during poling time at the beginning and at the end of load cycle qualification tests for full-size HVDC extruded cables. Indeed, in the design stage the electric field distributions are determined by the cable geometry and by temperature gradient in the insulation. Thus, the design is based on macroscopic parameters conductivity and permittivity and how they depend upon temperature. Any disturbance of the electric field due to space charge accumulation will only be revealed during space charge measurements either in as-manufactured state or in the aged state after load cycle qualification tests.

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Section: Pulse-electro Acoustic (Pea) Methodsmentioning

confidence: 99%

A protocol for space charge measurements in full-size HVDC extruded cables

Mazzanti

Chen

Fothergill

et al. 2015

IEEE Trans. Dielect. Electr. Insul.

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“…The pulse electrostatic stress (PEA) method [7] was used as a technology to measure the space charge. As for measurements, the space charge distribution was measured in phases which matched the peak voltage of the positive electrode or the negative electrode as shown in Fig.…”

Section: Materials and Experimental Methodsmentioning

confidence: 99%

High‐field electrical properties under AC voltage application in acetophenone‐coated LDPE film

Mitsumoto

Nagao

Fukuma

et al. 2002

Electrical Engineering Japan

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SUMMARYThis paper deals with the effects of acetophenone coating on dielectric properties such as tan δ and capacitance and on space charge formation up to electrical breakdown under AC voltage application in low-density polyethylene (LDPE) film. The existence of acetophenone at the electrical interface enhances tan δ. tan δ in acetophenone-coated specimens increased with electric field and decreased with the frequency in the high-field and hightemperature region. AC breakdown test revealed that the electric strength in noncoated specimens was higher than in acetophenone-coated specimens, and that the electric strength also decreased with temperature.

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“…The electro-acoustic stress pulse method has been used by Takada [92][93][94]97,98], Cooke [101,103] and others [95,96,106] in the evaluation of the space charge profiles in thick slabs of several polymer dielectrics charge by electron beam irradiation. Cooke [lo21 also has utilized this method in scanning charges accumulated on a gas-solid interface.…”

Section: Electro-acoustic Stress Pulse Methodsmentioning

confidence: 99%

Review of space charge measurements in dielectrics

Ahmed

Srinivas

1997

IEEE Trans. Dielect. Electr. Insul.

144

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In the last two decades, a significant effort has been directed to understand the internal charge distributions in dielectrics. This has resulted in the development of a number of methods which give detailed information about space charge distributions. This review presents the evolution of several experimental approaches for the determination of spatial charge and field distributions in dielectrics, including the nondestructive methods of direct probing such as the thermal-pulse methods and the methods using pressure waves that propagate through the charged sample. Detailed information is also provided on the principles used in each technique, typical resolution, limitations and advantages associated with each method. The applications of the methods to several insulating materials charged with various mechanisms are described. The paper concludes with a discussion on a number of quite interesting techniques which seem most promising.

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An Electric Stress-Pulse Technique for The Measurement of Charges in A Plastic Plate Irradiated by an Electron Beam

Cited by 119 publications

References 9 publications

A protocol for space charge measurements in full-size HVDC extruded cables

A protocol for space charge measurements in full-size HVDC extruded cables

High‐field electrical properties under AC voltage application in acetophenone‐coated LDPE film

Review of space charge measurements in dielectrics

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