Diagnostic markers for AC power cable insulation aging based on space charge measurements | IEEE Conference Publication | IEEE Xplore

Diagnostic markers for AC power cable insulation aging based on space charge measurements


Abstract:

The results of space charge measurements carried out on specimens cut from high-voltage XLPE cables are discussed in this paper. The specimens were aged in the laboratory...Show More

Abstract:

The results of space charge measurements carried out on specimens cut from high-voltage XLPE cables are discussed in this paper. The specimens were aged in the laboratory under electrical, thermal and thermoelectrical stresses, for various times, with the purpose of searching for diagnostic indicators derived from space charge data. It is shown that two quantities extracted from space charge measurements, that is, the threshold for space charge accumulation and the apparent, trap-controlled, mobility display a good correlation with aging time and stress, thus providing interesting markers for aging diagnosis and life estimation. Aging models are proposed correlating markers with aging time.
Date of Conference: 07-10 April 2002
Date Added to IEEE Xplore: 07 August 2002
Print ISBN:0-7803-7337-5
Conference Location: Boston, MA, USA

Introduction

Going towards an integrated European energy market, with large power flows on long distances and strict power quality requirements from customers, the problem of reliability and maintenance of transmission and distribution cable connections requires increasing consideration.

References

References is not available for this document.