On‐site partial discharge detection of power cables using a novel DAC technique supplied by a capacitor bank
نویسندگان
چکیده
منابع مشابه
Advanced technique for partial discharge detection and analysis in power cables
Polymeric cables are the most common choice for transmission and distribution in populated areas, as well as for the connection of components (transformers, GIS, etc.) in new power stations, replacing paper-oil cables. Indeed, they do possess superior characteristics with respect to oil-filled cables. As an example, they do require lower maintenance, they are lighter (easier to deploy) and, in ...
متن کاملOn-site Portable Partial Discharge Detection Applied to Power Cables Using HFCT and UHF methods
Partial discharge (PD) events happen inside the power cables and cable terminations with the insulation degradation. The PD detection can effectively supply the information of cable status. According to the electrical and electromagnetic emission of PD activities, high-frequency transformer (HFCT) and ultrahigh-frequency (UHF) methods are employed to detect the PD signals. Besides, a portable P...
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Partial discharge (PD) detection is an important means in the condition-based maintenance of high voltage apparatus including crosslinked polyethylene (XLPE) power cables. In this contribution, we introduce the recent work in Shanghai municipal electric power company on the condition-based maintenance of XLPE power cables. As to how to carry out the PD detection in different circumstances, thre...
متن کاملReturn to Session PARTIAL DISCHARGE DETECTION IN POWER CABLES: PRACTICAL LIMITS AS A FUNCTION OF CABLE LENGTH
Power cables behave as transmission lines as regards partial discharge (PD) pulse propagation. Attenuation and dispersion phenomena have, therefore, great influence on the detectability of PD pulses, particularly when long cable routes and detection from terminals are considered. This paper presents an approximate model to infer PD pulse waveform as a function of the distance travelled along th...
متن کاملAnalysis and Diagnosis of Partial Discharge of Power Capacitors Using Extension Neural Network Algorithm and Synchronous Detection Based Chaos Theory
Power capacitors are important equipment of the power systems that are being operated in high voltage levels at high temperatures for long periods. As time goes on, their insulation fracture rate increases, and partial discharge is the most important cause of their fracture. Therefore, fast and accurate methods have great importance to accurately diagnosis the partial discharge. Conventional me...
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ژورنال
عنوان ژورنال: IET Generation, Transmission & Distribution
سال: 2019
ISSN: 1751-8695,1751-8695
DOI: 10.1049/iet-gtd.2019.1334