00994nam0 22002651i 450 UON0040654120231205104721.14520120309f1962 |0itac50 baporPT|||| 1||||Poesias, 1945-1960Carlos de OliveiraLisboaPortugália Editorastampa 1962174 p.21 cm.001UON004064632001 Poetas de Hoje210 LisboaPortugália editora3PTLisboaUONL003135869.1Poesia portoghese12OLIVEIRACarlos : deUONV136762449000PortugáliaUONV268348650ITSOL20240220RICASIBA - SISTEMA BIBLIOTECARIO DI ATENEOUONSIUON00406541SIBA - SISTEMA BIBLIOTECARIO DI ATENEOSI Port I 0197 SI SP 937 5 0197 Poesias, 1945-19601346607UNIOR05817nam 22006495 450 991076028860332120240322022632.03-031-44025-010.1007/978-3-031-44025-0(MiAaPQ)EBC30787817(Au-PeEL)EBL30787817(DE-He213)978-3-031-44025-0(PPN)272916390(CKB)28505140000041(EXLCZ)992850514000004120231013d2024 u| 0engurcnu||||||||txtrdacontentcrdamediacrrdacarrierDetection of Corona Discharge in Electric Networks /edited by Yevgen Sokol, Vitalii Babak, Artur Zaporozhets, Oleg Gryb, Ihor Karpaliuk1st ed. 2024.Cham :Springer Nature Switzerland :Imprint: Springer,2024.1 online resource (238 pages)Studies in Systems, Decision and Control,2198-4190 ;509Print version: Sokol, Yevgen Detection of Corona Discharge in Electric Networks Cham : Springer,c2023 9783031440243 Preface -- Contents -- Development of Approaches to the Quality of Electricity Supply -- Influence of Corona Discharge on Electric Power Supply Parameters -- Detection of Corona Discharge in Power Supply System -- Theoretical Principles of Acoustic Radiation Created by Corona Discharge -- Recognition of Corona Discharge Presence by Spectral Characteristics of Acoustic Radiation -- Instruments for Identification of Corona Discharge Presence by Spectral Characteristics of Acoustic Radiation -- Theoretical Basis of Determination of Corona Discharge Coordinates by Acoustic Radiation -- Instruments for Corona Discharge Coordinate Search as a Source of Acoustic Radiation -- Prospects for the Development of Corona Discharge Detection Method by Spectral Acoustic Radiation -- Economic Effect of the Use of the Method of Diagnosing the State of Power Lines at the Expense of UAVs.The book is devoted to the solution of the problem of determining the presence of corona discharge on electrical equipment with acoustic radiation. It is shown that corona discharge leads not only to irreversible losses of electrical energy, but also interferes with the transmission of high-frequency signals, deteriorates insulating elements, can become a source of conditions for the occurrence of a destructive arc discharge and is one of the factors of changing the continuity of the electrical system as a whole. The book describes the processes in a corona discharge that lead to the occurrence of acoustic waves. The authors analyzed acoustic radiation from a corona discharge reproduced in laboratory conditions. The received acoustic signals were processed by Fourier transform. Thus, the features of the spectral function, which belong specifically to the corona discharge in electrical networks with industrial frequency current, were determined. Based on the inverse Fourier transform, asimplified model of the acoustic radiation of the corona discharge was constructed. The authors proposed a method for detecting the presence of a corona discharge based on the spectral characteristics of acoustic radiation. Techniques were developed to determine the presence of a corona discharge for the creation of stationary and mobile devices. The advantages of the method of detecting the presence of corona discharge by the acoustic spectrum are shown. The method makes it possible to determine the presence of a corona discharge remotely, even out of direct sight, regardless of the time of day and regardless of the season. The book states that determining the presence of a corona discharge is not enough, it is still necessary to determine its location. The method of finding the coordinates of the corona discharge as a source of sound was described. Methods of searching for corona discharge coordinates with a fixed scanning device and a moving scanning device are proposed. A UAV is proposed as a mobile platform for the scanning system. The influence of the Doppler effect on acoustic measurements when the UAV speed changes was taken into account. The authors have shown that the use of coronal discharge detection with UAVs will not only enable the prevention of coronal discharge, but also increase the frequency of surface inspections. This will allow timely measures to be taken to improve the reliability of the power system operation. The book is intended for the researchers, postgraduate students and students specialized in theory and calculations of electrical systems.Studies in Systems, Decision and Control,2198-4190 ;509Engineering mathematicsEngineeringData processingElectrical engineeringElectronicsMathematical and Computational Engineering ApplicationsElectrical and Electronic EngineeringElectronics and Microelectronics, InstrumentationEngineering mathematics.EngineeringData processing.Electrical engineering.Electronics.Mathematical and Computational Engineering Applications.Electrical and Electronic Engineering.Electronics and Microelectronics, Instrumentation.620Sokol Yevgen1437506Babak Vitalii1437507Zaporozhets Artur1437508Gryb Oleg1437509Karpaliuk Ihor1437510MiAaPQMiAaPQMiAaPQBOOK9910760288603321Detection of Corona Discharge in Electric Networks3598218UNINA02303oam 2200325z- 450 99101517667033211-4794-2442-0(CKB)3710000000953515(VLeBooks)9781479424429(Exl-AI)993710000000953515(EXLCZ)99371000000095351520210505c2016uuuu -u- -engFourth Time Travel MEGAPACK(R)Wildside Press1 online resource (476 p.)Time travel remains a favorite subgenre in science fiction, and we are pleased to present another volume of classic tales. 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