Aug 2026· International Conference on Artificial Intelligence, Big Data and Electrical Automation· Vol 14319, pp. 1431906 - 1431906-7· 0 citations· 9 references
Engineering
Abstract
This paper proposes a short-time AC voltage (STAC)-based insulation testing method for power cable lines, addressing the critical issue of cable insulation damage caused by space charge accumulation under DC oscillating wave excitation and overcoming the limitation of excessively short peak duration in existing methods. Firstly, a modular STAC excitation power supply based on high-power DC-AC conversion is designed, with its basic principle and implementation details elaborated. By comparing the partial discharge (PD) characteristics of various typical discharge defects under STAC, DC oscillating wave, and power frequency voltage, it is verified that the proposed method exhibits superior power frequency equivalence compared to the traditional DC oscillating wave method.
Reliable operation of medium-voltage distribution networks critically depends on the integrity of cross-linked polyethylene (XLPE) insulated cables. This paper proposes a diagnostic methodology that integrates leakage current (LC) measurement with phase-resolved partial discharge (PRPD) analysis to assess cable insulat...
K. Janprom, Sittadach Morkmechai, Natchanun Prainetr et al.· International Journal of App...· 0 citations
Precise electrical cable representation is crucial for examining surge transient overvoltages in medium voltage (MV) motor systems. These brief overvoltages, initiated by swift switching actions, may induce substantial insulation strain, equipment degradation, and potential system failures. This study explores the infl...
A. Basha, N. Lindsay· International Journal of App...· 0 citations
To investigate the development characteristics of winding interturn insulation partial discharge in a full-scale converter transformer, an interturn insulation defect specimen was installed inside a ±400 kV full-scale converter transformer. A partial-discharge test was conducted under stepwise alternating-current (AC)...
Yun-Peng Tang, Shu-Chen Ma, Hong Liu et al.· Energies· 0 citations
Taking a typical high-power microwave power supply system as the research object, this paper quantitatively simulates and compares electromagnetic disturbance characteristics under multiple operating conditions, systematically investigates the influence mechanism of the system on EMI, and verifies the proposed simulati...
Ruiheng Zhang, Yuzhang Yuan, Hai-Tao Wang et al.· Electronics· 0 citations
This study investigates the partial discharge (PD) characteristics of tip defects in cable terminations under switching impulse voltage superimposed on alternating current (AC) voltage. An AC-superimposed switching impulse voltage test platform was established, and the switching-impulse polarity and superposition phase...
Fu-Jie Wang, Jun-Jun Yang, Xiao-Hui Li et al.· Energies· 0 citations
The problem of electrical and electronic equipment immunity to high- voltage short- duration power supply surges, specifically high- energy microsecond surge disturbances, is considered. The causes of microsecond surge occurrence, with amplitudes reaching 2 kV and higher, are shown. A review of various methods and mean...
V. Gurin· European Open Science Space· 0 citations
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