20.500.12556/DKUM-17070 SANACIJA IN IZVAJANJE FUNKCIONALNIH PREIZKUSOV NA GENERATORJIH HE BOŠTANJ Reconstruction and implementation of functional tests at generators of HPP Boštanj. V svetu in predvsem v Evropi, je predvideno povečanje deleža energije pridobljene iz obnovljivih virov. Zaradi tega je bila v Evropski uniji sprejeta direktiva, po kateri mora Slovenija iz sedanjih 8,5% energije povečati na 25 % energije iz obnovljivih virov. V obnovljive vire štejemo tudi energijo iz hidroelektrarn. Voda je edini naravni vir, ki ga je v Sloveniji v izobilju, potrebno pa bi ga bilo bolje izkoristiti. Reke Drava, Soča z Idrijco so že zadovoljivo izkoriščene, ostane pa še veliko možnosti za izkoriščenje na reki Savi in Muri. Na reki Savi je predvidena izgradnja verige hidroelektrarn od Most do meje s Hrvaško, ki bo poleg hidroelektrarn na Dravi predstavljala glavni vir slovenskega elektroenergetskega sistema. Prva v verigi spodnje Save je tako bila zgrajena hidroelektrarna Vrhovo, ki se je začela graditi leta 1987 uporabno dovoljenje pa je dobila 1997. Po nekaj letih pa so bile zgrajene še hidroelektrarna Boštanj in hidroelektrarna Blanca. Trenutno je v fazi gradnje tudi hidroelektrarna Krško. Med izgradnjo HE Vrhovo in HE Boštanj, je preteklo 15 let, zato so bili na HE Boštanj vgrajeni novejši materiali z boljšimi karakteristikami, nastale pa so tudi nove konstrukcijske rešitve. Nove rešitve pa lahko pripeljejo tudi do neljubih dogodkov, ki so se pojavili na HE Boštanj in so opisani v naslednjih poglavjih. V uvodnem poglavju je predstavljena hidroelektrarna Boštanj, predvsem s stališča pomembnejših komponent, ki so potrebne za obratovanje takšnega objekta. Večji poudarek je na elektro komponentah. V drugem poglavju se dotaknemo problematike odkrivanja napak na generatorju. Zaradi napak, ki so se nam na prvi pogled zdele zanemarljive oziroma minimalne, smo se morali temeljito poglobiti v konstrukcijske, tehnološke in sistemske rešitve, da smo ugotovili zakaj je do napak prišlo. Na osnovi ugotovljenih vzrokov so v nadaljevanju opisani postopki in predlagani ukrepi za sanacijo statorja generatorja. Prikazane so rešitve prve sanacije in nato še rešitve druge sanacije generatorja. Pri sanacijah smo morali narediti tudi določene spremembe na ostalih sistemih, kot so vodenje in obratovanje agregata. V naslednjem poglavju so prikazani končni rezultati sanacije in ocena ali je bila sanacija uspešna. Po vsaki izvedeni sanaciji je bilo potrebno ponovno preskusiti glavne sisteme agregata. Izvedba funkcionalnih preizkusov in sam potek je opisan v naslednjem poglavju. V zaključku pa so strjene misli sanacije agregata in ali je smiselno vedno težiti k uporabi najnovejših materialov in postopkov. The world and especially in Europe, is projected increase in the proportion of energy derived from renewable resources. It was adopted by the European Union directive, after which Slovenia has 8.5% of current energy increased to 25% of energy from renewable sources. The renewable energy source is also energy from hydropower plants. Water is the only natural resource in Slovenia in abundance, but need to be better used. Drava river, river Soča with Idrijca are already sufficiently exploited, but much remains to exploit opportunities on the river Sava and Mura. The river Sava is provided for the construction of hydropower plants chain from Moste to the border with Croatia, which will in addition represented the main source of Slovenian power system. The first hydropower plant in a chain of lower Sava river was hydropower plant Vrhovo. After a few years they have been built hydropower plant Boštanj and Blanca. Currently, is in the phase of civil works hydropower plant Krško. Between HPP Vrhovo and HE Boštanj pass 15 years, and in HPP Boštanj were later incorporated materials with better characteristics, and there were also created new design solutions. New solutions can also lead to disadvantages of events that occurred on HPP Boštanj and are described in the following sections. In the introductory chapter is presented HPP Boštanj, especially from the viewpoint of the major components needed to operate. Major emphasis is placed on electrical components. The second chapter tackles the problem of detecting faults on the generators. Because of errors, that we at first glance seem insignificant or minimal, we thoroughly study the structural, technological and systemic solutions that we find out why the error occurred. Based on the identified causes, the procedures are described below and the proposed measures for the rehabilitation of the generator stator. Solutions of the first and second rehabilitation are shown. Between rehabilitation, we also need to make some changes in other systems, such as the control and operation of the generator. The next chapter presents the final results and assessment of rehabilitation and it tell us if rehabilitation was successful. The main generator systems has been carried out to re-test after each rehabilitation. Implementation of functional tests is described in the next chapter. In conclusion is presented if the rehabilitation was successful and is it wise to always strive to use the latest materials and processes. Sinhronski generator rotor statorski paket stator navitje hlajenje turbina vzbujanje Synchronous generator rotor stator core stator winding cooling turbine excitation true true false [M. Kenig] Slovenski jezik Angleški jezik Magistrsko delo/naloga 2010-12-17 12:20:22 2011-02-24 19:15:10 2022-04-13 09:10:10 2023-12-21 03:16:48 2010 0 Krško 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.311-253(043.3) 1024046684 URN:SI:UM:DK:UXE8OVYO MAG_Kenig_Marko_2010.pdf MAG_Kenig_Marko_2010.pdf 1 F07B89BB4F2735155C00157EF650AF95 8c991506e79ccb83d0935c7229389ef3782643d1b50eb038ded57d96468a2393 cf97edc5-7c04-11eb-bb7a-00155d0001ca 20.500.12556/dkum/8b0c3cf6-951b-4c4f-9413-1c4ebe79f377 https://dk.um.si/Dokument.php?lang=slv&id=19764 Fakulteta za energetiko 0 0 0