Utjecaj distribuirane proizvodnje na planiranje elektroenergetske razdjelne mreže

scientific master's theses

• Title (english): The impact of distributed generation on the planning of electrical distribution networks
• Author: Alen Katić
• Mentor: Davor Škrlec (mentor)
• Committee member: Slavko Krajcar (predsjednik povjerenstva)
• Committee member: Davor Škrlec (član povjerenstva)
• Committee member: Ranko Goić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; (Department of Energy and Power Systems); Zagreb
• Defense date and country: 2006, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering; Power Engineering
• Universal decimal classification (UDC): 621.3 - Electrical engineering

Abstract

U radu se razmatraju vrste malih elektrana s obzirom na način dobivanja pogonske energije ( vjetar, voda, sunce, plin, bioplin i biomasa ) i način izvedbe. Za svaku od malih elektrana opisan je način njihova priključivanja na elektroenergetsku mrežu s osvrtom na uvjete koje mora ispuniti mala elektrana za paralelni odnosno otočni rad s elektroenergetskom mrežom.
Zaštita male elektrane je opisana u tri koraka. U prvom dijelu se opisuje primarna zaštita male elektrane, dok se u drugom djelu opisuje zaštita nužna za otočni rad s razdvajanjem na niskom naponu. U trećem je djelu opisana zaštita s razdvajanjem na srednjem naponu.
Razmatra se i utjecaj malih elektrana na srednjenaponsku mrežu kroz povećanje raspoloživosti mreže njihovom ugradnjom. Osim toga, uspoređuje se pozitivni utjecaj male elektrane na raspoloživost mreže s nekim drugim načinima povećavanja raspoloživosti mreže, poput ugrađivanja prekidača za automatsko odvajajnje voda u kvaru ili izgradnje poveznog prstena.
Kod razmatranja utjecaja malih elektrana na struje kratkih spojeva u SN mrežama uzima se više slučajeva s obzirom na snagu i vrstu generatora, te na mjesto nastanka kratkog spoja.
Osim ovih, navedenih utjecaja, objašnjava se utjecaj malih elektrana na padove napona i tokove snaga. Ovi utjecaji se promatraju za različite snage malih elektrana kroz neke primjere. Opisuje se i utjecaj izgradnje poveznog prstena u radijalnim razdjelnim SN mrežama na smanjivanje padova napona i tokova snaga, te se efekti uspoređuju sa slučajevima ugradnje malih elektrana.
Svi ovi utjecaji se nakon svakog poglavlja obrađuju kroz konkretne primjere.

Abstract (english)

Thesis proposes different types of small power plants according to different ways of getting primary energy (wind, water, solar, gas, biogas and biomass) and way of construction. For each small power plant, it is described grid connection with focus on parallel and intentional islanding work on network.
Protection of small power plant is described in three ways. First part describes primary protection of small power plant. Second part describes protection important for intentional islanding with switching on low voltage network. Third part describes protection for intentional islanding with switching on medium voltage network.
Influence of small power plants on medium voltage network is considered by increasing of reliability of network with their installation. A positive influence of small power plant on nework is compared with reliability with others ways how to increase network reliability, as are installation of automatic circuit breakers in network or building of interconnection line.
In part which considered small power plants` influence on shortcut currents, several cases of different powers and types generators, and cases with different shortcut places are described.
Influence of small power plants on voltage drop and power flow is also considered. Some examples describe This influences for different small nominal power plants. Others ways of reducing voltage drop and power flow in medium voltage networks are also described. They compare with influence of small power plants.
All of this influences with concrete examples are elaborated, after every section.

• Keywords: Distribuirana proizvodnja; pouzdanost i raspoloživost; struje kratkog spoja; tokovi snaga; padovi napona i gubici
• Keywords (english): Distributed generation; reliability and availability; shortcut currents; power flow; voltage drop and power losses
• Language: croatian
• URN:NBN: urn:nbn:hr:168:584284
• Study programme: Title: Postgraduate master programme in electrical engineering; Study programme type: university; Study level: postgraduate; Academic / professional title: Magistar znanosti elektrotehnike (Magistar znanosti elektrotehnike)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2019-07-17 08:18:32