Utjecaj regenerativnog zagrijavanja na pogonsku fleksibilnost

master's thesis

• Title (english): Impact of regenerative preheating on operating flexibility
• Author: Roko Budić
• Mentor: Dražen Lončar (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2018-01-26, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering

Abstract

Sve veća proizvodnja električne energije iz obnovljivih izvora mijenja način rada konvencionalnih termoelektrana. Njihova uloga postaje, pokrivanje razlika između potražnje i proizvodnje električne energije iz obnovljivih izvora Kako bi se pokrila razlika između potražnje i proizvodnje električne energije od povlaštenih proizvođača, potreba za povećanom fleksibilnosti termoelektrane dolazi do izražaja. Jedan od načina kratkotrajnog povećanja snage je obustava nereguliranih oduzimanja pare prema visokotlačnim zagrijačima napojne vode. Upravo taj slučaj je detaljnije opisan u ovom radu te je provjeren utjecaj obustave i ponovne uspostave oduzimanja na naprezanja u ulaznom kolektoru napojne vode. Simulacije su vršene u programskom paketu Matlab.

Abstract (english)

Rise in electricity production from renewable sources changes the operation of conventional termal plants. Their role is to cover the difference between electricity demand and electricity generation from renewable sources. In order to cover the difference between electricity demand and electricity generation from eligible producers, the need for increased flexibility of the thermal power plant comes to the fore. One of the ways of a short-term increase in power is a short-time stoppage of the turbine steam extraction for preheating the feed water in highpressure feed water heaters. This case is described in more detail in this paper, as well as the effects of the suspension, and re-establishment of the steam extraction on the thermal stresses of the economiser inlet header have been taken into account. The simulations were carried out in the Matlab program package.

• Keywords: fleksibilnost elektrane; obustava nereguliranih oduzimanja; visokotlačni zagrijač; temperaturna naprezanja kolektora; Matlab
• Keywords (english): flexibility of thermal powerplant; turbine steam extraction stoppage; highpressure feed water heaters; thermal stress; economiser inlet header; Matlab
• Language: croatian
• URN:NBN: urn:nbn:hr:235:721193
• Study programme: Title: Mechanical Engineering; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka strojarstva (magistar/magistra inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2019-05-22 21:23:04