Deconvolution techniques for space charge recovery using pulsed electroacoustic method in coaxial geometry

Vissouvanadin, B.; Vu, Thi Thu Nga; Berquez, Laurent; Roy, Séverine Le; Teyssèdre, G.; Laurent, C.

doi:10.1109/tdei.2013.004163

Cited by 41 publications

(21 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A typical experimental arrangement for cable geometry is shown in Figure 1 [14]. It consists of a cable sample with a measurement device composed by a PEA cell including piezo sensor and amplifier, a DSO (Digital Signal Oscilloscope), a HVDC generator and a pulse generator (50 ns width, 10 kHz frequency and up to 5 kV amplitude).…”

Section: Techniques and Methodologies For Space Charge Assessmentmentioning

confidence: 99%

“…From there the transfer function of the system can be isolated, accounting for the cylindrical geometry and attenuation and dispersion of acoustic waves in the material. Acoustic signals recorded in specific conditions are treated to provide charge distributions as detailed e.g., in [8,14]. Features of the PEA method are the possibility of making acquisition with stress either on or off, its excellent time resolution, its relative lightness and the fact that it is widespread.…”

Section: Techniques and Methodologies For Space Charge Assessmentmentioning

confidence: 99%

“…Features of the PEA method are the possibility of making acquisition with stress either on or off, its excellent time resolution, its relative lightness and the fact that it is widespread. A typical experimental arrangement for cable geometry is shown in Figure 1 [14]. It consists of a cable sample with a measurement device composed by a PEA cell including piezo sensor and amplifier, a DSO (Digital Signal Oscilloscope), a HVDC generator and a pulse generator (50 ns width, 10 kHz frequency and up to 5 kV amplitude).…”

Section: Techniques and Methodologies For Space Charge Assessmentmentioning

confidence: 99%

See 2 more Smart Citations

DC Model Cable under Polarity Inversion and Thermal Gradient: Build-Up of Design-Related Space Charge

Adi¹,

Teyssèdre

et al. 2017

Technologies

View full text Add to dashboard Cite

Abstract:In the field of energy transport, High-Voltage DC (HVDC) technologies are booming at present due to the more flexible power converter solutions along with needs to bring electrical energy from distributed production areas to consumption sites and to strengthen large-scale energy networks. These developments go with challenges in qualifying insulating materials embedded in those systems and in the design of insulations relying on stress distribution. Our purpose in this communication is to illustrate how far the field distribution in DC insulation systems can be anticipated based on conductivity data gathered as a function of temperature and electric field. Transient currents and conductivity estimates as a function of temperature and field were recorded on miniaturized HVDC power cables with construction of 1.5 mm thick crosslinked polyethylene (XLPE) insulation. Outputs of the conductivity model are compared to measured field distributions using space charge measurements techniques. It is shown that some features of the field distribution on model cables put under thermal gradient can be anticipated based on conductivity data. However, space charge build-up can induce substantial electric field strengthening when materials are not well controlled.

show abstract

Section: Techniques and Methodologies For Space Charge Assessmentmentioning

confidence: 99%

Section: Techniques and Methodologies For Space Charge Assessmentmentioning

confidence: 99%

Section: Techniques and Methodologies For Space Charge Assessmentmentioning

confidence: 99%

See 1 more Smart Citation

DC Model Cable under Polarity Inversion and Thermal Gradient: Build-Up of Design-Related Space Charge

Adi¹,

Teyssèdre

et al. 2017

Technologies

View full text Add to dashboard Cite

show abstract

“…(6)(7)(8)(9) Some researchers have begun to measure the space charge profiles in coaxial cables and achieved preliminary results. (10)(11)(12)(13)(14)(15)(16) For example, Fukunaga et al applied the high-frequency pulse to a cable conductor through a coupling capacitor. (11) Fu et al used a plate measuring electrode instead of circular one to realize the linear contact between cable samples and the measuring electrode.…”

Section: Introductionmentioning

confidence: 99%

“…In this PEA method, the pulse could couple into the cable without attenuation but with the damage of the cable structure. (13) Hozumi et al injected a pulse from the PEA measuring electrode insulated to the ground and then coupled into the cable conductor via bulk capacitance. An analog/digital (A/D) fiber optic linker was used to isolate the PEA measuring electrode and oscilloscope.…”

Section: Introductionmentioning

confidence: 99%

Recovery Algorithm for Space Charge Waveform in Coaxial Cable under Temperature Gradient

2017

Sensors and Materials

View full text Add to dashboard Cite

The accumulation of space charge in a coaxial cable under high-voltage direct current (HVDC) may lead to the serious distortion of the internal electrical field, and thus extremely affect the long-term reliability of the cable in service. Therefore, it is significant to measure the space charge characteristic in a full-size power cable in real time. However, because of the existence of a temperature gradient across the cable insulation under DC electrical stress, the density of the dielectric will be inhomogeneous. Moreover, the effect of the coaxial structure on the distortion of measuring waveforms has to be taken into consideration. In this paper, an improved pulsed electroacoustic (PEA) system suited for a full-size power cable under a temperature gradient was realized by designing the units of pulse injection and signal detection. Then, the charge density was corrected according to the nonuniform electric stress distribution and the divergent acoustic propagation. Finally, the system transfer function was amended by adding the dispersion coefficient's quadratic approximation to the general solution of the general wave propagation equation. With this new recovery algorithm, the distortion of the waveform caused by the cable's coaxial structure, acoustic waves' attenuation and dispersion, and temperature gradient effect can be recovered successfully.

show abstract

Space Charge Characteristics of Coaxial Cable Insulation

Chen

Wang

et al. 2020

Polymer Insulation Applied for HVDC Transmission

View full text Add to dashboard Cite

Deconvolution techniques for space charge recovery using pulsed electroacoustic method in coaxial geometry

Cited by 41 publications

References 15 publications

DC Model Cable under Polarity Inversion and Thermal Gradient: Build-Up of Design-Related Space Charge

DC Model Cable under Polarity Inversion and Thermal Gradient: Build-Up of Design-Related Space Charge

Recovery Algorithm for Space Charge Waveform in Coaxial Cable under Temperature Gradient

Space Charge Characteristics of Coaxial Cable Insulation

Contact Info

Product

Resources

About