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scientific master's theses
Nadzor kvalitete električne energije
Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing, 2004. urn:nbn:hr:168:579398
Varda, Vanja
University of Zagreb
Faculty of Electrical Engineering and Computing
Department of Energy and Power Systems

Cite this document

Varda, V. (2004). Nadzor kvalitete električne energije (Scientific master's theses). Retrieved from https://urn.nsk.hr/urn:nbn:hr:168:579398

Varda, Vanja. "Nadzor kvalitete električne energije." Scientific master's theses, University of Zagreb, Faculty of Electrical Engineering and Computing, 2004. https://urn.nsk.hr/urn:nbn:hr:168:579398

Varda, Vanja. "Nadzor kvalitete električne energije." Scientific master's theses, University of Zagreb, Faculty of Electrical Engineering and Computing, 2004. https://urn.nsk.hr/urn:nbn:hr:168:579398

Varda, V. (2004). 'Nadzor kvalitete električne energije', Scientific master's theses, University of Zagreb, Faculty of Electrical Engineering and Computing, accessed 16 January 2021, https://urn.nsk.hr/urn:nbn:hr:168:579398

Varda V. Nadzor kvalitete električne energije [Scientific master's theses]. Zagreb: University of Zagreb, Faculty of Electrical Engineering and Computing; 2004 [cited 2021 January 16] Available at: https://urn.nsk.hr/urn:nbn:hr:168:579398

V. Varda, "Nadzor kvalitete električne energije", Scientific master's theses, University of Zagreb, Faculty of Electrical Engineering and Computing, Zagreb, 2004. Available at: https://urn.nsk.hr/urn:nbn:hr:168:579398

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Metadata
TitleNadzor kvalitete električne energije
Title (english)Power quality monitoring
AuthorVanja Varda
MentorSejid Tešnjak (mentor)
Committee memberTomislav Tomiša (predsjednik povjerenstva)
Committee memberSejid Tešnjak (član povjerenstva)
Committee memberMatislav Majstrović (član povjerenstva)
Committee memberAnte Marušić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Electrical Engineering and Computing
(Department of Energy and Power Systems)
Zagreb
Defense date and country2004-07-09, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Electrical Engineering
Power Engineering
Universal decimal classification
(UDC)		621.3
APPLIED SCIENCES. MEDICINE. TECHNOLOGY
Electrical engineering
Universal decimal classification
(UDC)		658
APPLIED SCIENCES. MEDICINE. TECHNOLOGY
Business management, administration. Commercial organization
Abstract
Liberalizacijom tržišta električne energije nastale su velike promjene u području opskrbe električnom energijom. Dok je prije električna energija bila javna usluga, danas je postala robom s kojom se trguje na otvorenom tržištu, a koja mora ispunjavati zadane kriterije kvalitete. Pri tome se može govoriti o dvije glavne grupe pokazatelja kvalitete električne: * pokazatelji vezani uz kvalitetu isporuke (učestalost i trajanje prekida) * pokazatelji vezani uz kvalitetu napona (padovi napona, propadi, brze promjene napona, udio viših harmonika) Prva grupa pokazatelja odnosi se na kvalitetu isporuke električne energije u razdjelnim elektroenergetskim mrežama. Druga grupa pokazatelja sadžana je u standardu EN 50160 (postavlja 13 pokazatelja kvalitete napona) kojim su opisane značajke napona na mjestu priključka potrošača u NN i SN mrežama pri normalnim pogonskim uvjetima. Adekvatnim nadzorom spomenutih pokazatelja mogu se odrediti ciljevi u svezi kvalitete isporuke električne energije, te optimalni načini njihovog ostvarivanja, kao i način osiguranja odgovarajuće kvalitete isporučene električne energije potrošačima. Naime, svaki bi potrošač električne energije u uvjetima otvorenog tržišta električnom energijom prilikom ugovaranja s dobavljačem električne energije trebao specificirati svoje zahtjeve s obzirom na kvalitetu i sukladno k tome odgovarajuću cijenu po jedinici isporučene energije. Veoma visoki zahtjevi na kvalitetu električne energije mogli bi rezultirati visokim investicijskim ulaganjima, odnosno pre(visokom) cijenom električne energije. Zbog toga se teži uspostavljanju takvih ciljeva u području kvalitete električne energije koji su ostvarivi u realnim okolnostima, uz prihvatljive troškove (cost-benfit analiza). U horizontalno strukturiranim elektroenergetskim sustavima (sustav liberaliziranog- otvorenog tržišta električne energije) će se na planiranje, izgradnju i pogon mreže gledati na drugačiji način, pri čemu će vrlo važnu ulogu imati sve značajne veličine koje se temelje na kvaliteti električne energije, čime će upravo taj pojam zauzimati središnje mjesto.
Abstract (english)
Major changes have developed in the field of electrical energy supply as a result of liberalization of electrical power market. While electrical power used to be a public service, today, it has become as product, freely traded on open market, whilst it must meet predetermined quality standards. There are two main groups that determine power quality: * factors that are in connection to quality of delivery (frequency and duration of breaks) * factors that are in connection to voltage quality (voltage drops, surges, quick voltage changes, higher harmonics) First group of factors are in relation to power quality in distribution networks. Second group of factors is combined in standard EN 50160 (that lays down 13 key elements of voltage quality) and describes voltage at consumer connection point in low voltage and mid range voltage networks under standard conditions. Adequate monitoring of above mentioned factors can be used to determine the goals in relation to power quality monitoring, optimal ways of conducting them as well as enabling sufficient power quality distributed to consumers. By doing so, every consumer of power energy in open market conditions, should specify its quality demands when the connection contract is agreed upon and in relation to its demands, set price per single delivery unit of power energy. Reasonably high demands on power quality standard can result in high investment levels leading to (too) high cost of power energy. That being taken into consideration, power quality demands are laid down in reachable terms with acceptable levels of investment cost (cost-benefit analysis). Horizontally structured power energy systems (system of liberal-open market of power) considers planning, construction and operation of power network from another perspective, that consider all major elements based on power quality monitoring, making that very term a central consideration point.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:168:579398
Study programmeTitle: Postgraduate master programme in electrical engineering
Study programme type: university
Study level: postgraduate
Academic / professional title: Magistar znanosti elektrotehnike (Magistar znanosti elektrotehnike)
Type of resourceText
File originBorn digital
Access conditionsClosed access
Terms of useLicence In copyright icon
RepositoryFER Repository
Created on2019-06-26 13:35:58

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