Electrical Aging Markers for Low-Voltage Cable Insulation Wiring of Nuclear Power Plants

被引：0

作者：

Verardi, L. ^{[1
]}

Fabiani, D. ^{[1
]}

Montanari, G. C. ^{[1
]}

Placek, V. ^{[2
]}

机构：

[1] Univ Bologna, Lab Innovat Technol, Dipartimento Ingn Elettr, I-40126 Bologna, Italy

[2] Nucl Res Inst, Radiat Chem & Environm Qualificat dept, Rez, Czech Republic

来源：

2012 IEEE 10TH INTERNATIONAL CONFERENCE ON THE PROPERTIES AND APPLICATIONS OF DIELECTRIC MATERIALS (ICPADM) | 2012年

关键词：

low voltage cable; XLPE; thermal aging; radiation aging; nuclear power plants; permittivity; dielectric spectroscopy; charging/discharging current;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper presents some preliminary results of test carried out to measure electrical properties of XLPE insulations used at nuclear power plants (NPP). These cables were aged under thermal and radiation stresses. In order to obtain significant results in a reasonable time, the dose rate and the temperature chosen were higher than the operation values. Electrical measurements were performed through dielectric spectroscopy and polarization/depolarization currents. First results show significant variations of electrical properties of aged cables which can be correlated to insulation aging. In particular, the real part of the permittivity increases noticeably with aging over the whole test frequency range and the imaginary part of the permittivity shows a polarization peak enhancing at very low frequencies.

引用

页数：4

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