Review on Detection and Analysis of Partial Discharge along Power Cables

Abstract

Partial discharge (PD) detection and analysis plays a crucial role for acceptance testing and condition monitoring of power cables. Various aspects are related to PD in power cables from theory to practice. This paper first summarizes the PD mechanism and models used for PD analysis in power cables. Afterwards, PD detection is addressed in the aspects of off-line test, on-line test, and sensors. PD analysis is discussed in detail. Specifically, related quantities and algorithms for PD analysis are outlined. PD characteristics with affecting factors, e.g., dielectric type, load, and applied voltage are discussed. Experience on PD development trend with measurements in field is analyzed. Based on the comprehensive review, challenges of PD detection and analysis along a power cable are proposed.

A review: partial discharge in medium voltage cross-linked polyethylene XLPE cable

“…Data such as number of discharges, intensity, density, and pattern are to be documented for every localized PD which will be analyzed statistically. [19] mentioned that the results of on-site PD test may vary following the different utilized off-line methods. Some reveal that online PD monitoring can detect the defect in XLPE cables earlier than off-line PD [17].…”

“…Some reveal that online PD monitoring can detect the defect in XLPE cables earlier than off-line PD [17]. In addition, with the capability to continuously monitor the PD, the market of online PD for condition assessment for HV and MV cable is growing extensively in the power system network [19]. It should be highlighted that an on-line PD detection is as important as on-site test, but it requires more effort to deal with the noise.…”

A probabilistic approach for power cable cross section area selection: Most economic design by computer aided

“…Many references are interesting on the lifetime/aging of dielectric cable [15] , [16] , [43] , [44] , [45] , [46] , [47] , [48] and its calculations. For example, reference [45] introduces the accelerating aging time for cable in general, LF, as: where;…”

“…In practical design, the selection of cable cross-section area (CSA) based on the current-carrying capacity and the permissible voltage drop of these cables is discussed in [15] . Many researchers interest in predictive cable failure analysis, life assessment methods, fault location, tests and discharges, modeling, diagnosis, and optimization of maintenance and replacement strategies with the benefits of economic research [16] , [17] , [18] , [19] , [20] , [21] , [22] , [23] , [24] , [25] . Reference [26] focuses on reducing the power losses in the cables by applying a new software application that compares and chooses the best investment to acquire electrical equipment.…”

Multi‐type defect detection and location based on non‐destructive impedance spectrum measurement for underground power cables

“…However, neither of the above methods is able to locate the defect. The partial discharge test allows to locate a cable defect based on electromagnetic wave propagation [10]. The partial discharge signal attenuates along the cable, which restricts its detection for long connections [11].…”