20.500.12556/DKUM-88411 Vpliv motenj na električno omrežje diplomsko delo The impact of disturbances on the electrical network Diplomsko delo se osredotoča na proučevanje in analizo motenj v električnem omrežju, s posebnim poudarkom na harmonikih. Raziskava je bila izvedena v skladiščnem okolju podjetja Gorenje, kjer so bili merjeni vplivi motenj na električno opremo, konkretno na skladiščni voziček. Uvodno poglavje opisuje različne vrste motenj, kot so prenapetost, napetostni sunki, frekvenčne motnje in harmonične motnje, ter njihov potencialni vpliv na električno opremo, kot so pregrevanje, izguba zanesljivosti in uničenje opreme. Osrednji del diplomskega dela je posvečen harmonikom – valovnim oblikam, ki se pojavljajo na vrhu sinusnega valovanja. Podrobno so raziskani njihovi viri, kot so transformatorji, rotacijski stroji, energetski pretvorniki in fluorescenčne cevi. Poudarjene so tudi posledice harmonikov, vključno s povečanimi izgubami energije, popačenjem signalov in vplivom na natančnost merilnih instrumentov. V praktičnem delu diplomskega dela so izvedene meritve v skladišču podjetja Gorenje, ki so pokazale, da so harmoniki prisotni v električnem omrežju, kar povzroča težave v delovanju skladiščnega vozička. Za odpravo teh motenj so bile predlagane in implementirane rešitve, kot je uporaba filtrov za izboljšanje kakovosti signala. Po uvedbi filtrov so bile ponovno izvedene meritve, ki so pokazale izboljšanje kakovosti signala in zmanjšanje motenj. Diplomsko delo se zaključi s poudarkom na pomembnosti uporabe ustreznih metod za zmanjševanje motenj, kot so aktivni in pasivni filtri, ter njihovem vplivu na izboljšanje delovanja električnih sistemov in naprav v nizkonapetostnih omrežjih. The diploma thesis focuses on studying and analyzing disturbances in the electrical network, with particular emphasis on harmonics. The research was conducted in the warehouse environment of the Gorenje company, where the effects of disturbances on electrical equipment, specifically on a warehouse trolley, were measured. The introductory chapter describes various types of disturbances, such as overvoltage, voltage spikes, frequency disturbances, and harmonic disturbances, and their potential impact on electrical equipment, such as overheating, loss of reliability, and equipment destruction. The body of the thesis is devoted to harmonics – waveforms that occur on top of sinusoidal oscillation. Their sources, such as transformers, rotary machines, power converters, and fluorescent tubes, are thoroughly investigated. The consequences of harmonics are also highlighted, including increased energy losses, signal distortion, and impact on the accuracy of measuring instruments. In the practical part of the thesis, measurements were carried out in the Gorenje company's warehouse, which showed that harmonics are present in the electrical network, causing problems operating the warehouse trolley. Solutions, such as using filters to improve signal quality, were proposed and implemented to eliminate these disturbances. After introducing filters, measurements were repeated, showing improved signal quality and reduced disturbances. The thesis concludes by emphasizing the importance of using appropriate methods to reduce disturbances, such as active and passive filters, and their impact on improving the performance of electrical systems and devices in low-voltage networks. električne motnje meritve napetosti in toka negativni harmoniki filtri za popravilo signala električna energija popačenje signala normale in odstopanja vpliv na delovanje sistema electrical disturbances voltage and current measurements negative harmonics signal correction filters electrical energy signal distortion norms and deviations impact on system operation true true false [N. Čkonjević] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2024-04-20 13:06:42 2024-09-20 12:52:20 2024-09-21 03:13:34 0000-00-00 00:00:00 2024 0 Maribor 0 Velenje XIII, 35 f. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.316.1:621.3.018.3(043.2) 208330243 VS_Ckonjevic_Nemanja_2024.pdf VS_Ckonjevic_Nemanja_2024.pdf 1 7BCD5C28CD913C412EC201A64E72B5ED 37351faa77d63a63c4c43a9f520af1f2a62741b2a04f1043b4deb35ad8d80c9b 297be141-27ed-11ef-b3ed-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=180410 Fakulteta za energetiko 0 0 0