Session: Liberalization of electricity market, impact on supply security, energy efficiency and effective operation of Power Plants
Development and operation of the deregulated energy market; energy efficiency of all processes and equipments used for power generation by thermal /hydro/wind and other Power Plants; research and modeling of processes in steam boilers, turbines and other equipment of thermal /hydro/wind and other Power Plants; combined production of heat and power, reliability and availability of facilities and Power Plants; effective utilization and reduction of fuel consumption; optimization of processes, equipment, facilities and whole Power Plants; economic handling of processes; rationalizations and innovations of the production processes; introduction of system of quality.
Papers selected for Conference Session titled : Liberalization of electricity market, impact on supply security, energy efficiency and effective operation of Power Plants
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Djorji Biljanovski, Aleksandar Vlajčić, Predrag Jovanović, Vladimir Koković - PD TENT, SKF
Abstract
Reaching higher efficiency and reliability in electric energy production by implementation of Asset Efficiency Optimization process
Starting with increasing requirements for efficient energy production and security of energy supply in Serbia and South East Europe, business plans and KPIs of TPP "Nikola Tesla", paper presents Asset Management Improvement projects, in order to achieve either same level of production and decrease costs, or to increase production maintaining costs on the same level.
Počevši od povećanih zahteva za efikasnom proizvodnjom električne energije i sigurnim snabdevanjem energijom u Srbiji i Jugoistočnoj Evropi, planova poslovanja i ključnih pokazatelja uspešnosti Termoelektrana "Nikola Tesla" u radu su predstavljeni projekti za unapređenje upravljanja osnovnim sredstvima u cilju postizanja istog nivoa proizvodnje uz smanjenje troškova ili povećanje proizvodnje uz zadržavanje troškova na istom nivou.
Volker Schuele - Alstom Power GmbH - Integrated Solutions , Dirk Renjewski - Alstom Power GmbH - Integrated Solutions , Olivier Clement - Alstom Power GmbH - Integrated Solutions , Fabian Bierewirtz - Alstom Power GmbH - Integrated Solutions
Abstract
The existing Power Generation fossil fuel assets have, in many cases, hidden capacity due in part to the conservative nature of their original design. In order to release these hidden reserves and maximise the Plant performance, Alstom Power has developed a suite of products which improve emissions control, output and heat rate.
To quantify the potential improvement the first step is a Plant assessment in which the condition of the Plant is assessed alongside the opportunities for improved performance. Many options can be presented to the Plant owner. In this paper we look at 3 specific products:
- Cold End Performance. This offers the possibility to improve the efficiency and capacity of existing plants based on an holistic methodology and system approach to optimise the LP-turbine, condenser and cooling water system to achieve a greater cumulative benefit.
- Steam Temperature Control. By improving the control and measurement accuracy of the live and reheat steam temperatures the plant efficiency can be increased. This reduce measurement errors and maintains stable control thereby removing the need for contingency margins.
- Heat Recovery System. One of the most significant losses impacting performance is the low grade heat released to the atmosphere in the flue gas. By the addition of an extra heat exchanger upstream of an ESP the plant efficiency and output can be increase and with low sulphur coals with the added benefit of a reduction in particulate emissions. A system approach is essential to ensure the successful integration of the heat exchanger within the existing Plant and to maximise the combined benefits of improved performance and emissions reduction.
Upgrading of existing plants is a cost effective means of increasing Plant performance and releasing the hidden potential of a conservative original design. By using an integrated system approach these benefits can be maximised and the full potential of the Power Plant Assets realised.
Hellmuth Brueggemann - ALSTOM Boiler Deutschland GmbH , T. M. Marling - ALSTOM Boiler Deutschland GmbH
Abstract
The discussion on world climate change and efficient power generation requests for advanced firing systems and burners. Since renewable energy sources will be further utilized in power generation, new fossil-fired power stations need to be flexible from very low loads to full load, as they are to compensate the difference between power demand and power generation. Furthermore, new hard coal and lignite-fired power stations will have to burn biomass in order to reduce their CO2 footprint from coal combustion. In this report the achievements of the development of advanced and flexible firing systems and burners to cope with future needs will be addressed. These burners as fixed burners as well as tilting burners have the clearly defined objectives to utilise a wide fuel range with low emissions, without slagging and high availability in all operation modes. Through consequent use of return of experience from new power projects as well as retrofitted units the proven jet burner technology could be further developed. The improvements enable the new power plant fleet, currently under execution in Germany and Europe, to operate with the most advanced and environment-friendly burner technology and to fulfil their future tasks.
Wolfgang Apelt - Vattenfall Europe PowerConsult GmbH, Germany , Ronald Rost - Vattenfall Europe PowerConsult GmbH, Germany
Abstract
This presentation informs about the development and actual status of Vattenfall’s lignite-fired 675 MW unit Boxberg R which is currently in the final commissioning stage and about the hardcoal-fired 2 x 820 MW Moorburg project which is under construction. Each project will be presented with its major design parameters with special focus on site characteristics, plant efficiency and stack emissions. Energy efficiency measures will be compared with best available techniques. The project and engineering management will be outlined and the construction progress illustrated.
Dr.-Eng. Daniel Seibt - Vattenfall Europe PowerConsult GmbH, Germany , Ronald Rost - Vattenfall Europe PowerConsult GmbH, Germany
Abstract
The usage of biomass and waste in existing power plants is a good possibility to reduce the CO2 footprint, make most efficient use of those fuels and contribute to an economic plant operation. This presentation informs about Vattenfall activities for the usage of woody biomass and of residue derived waste in existing power and CHP plants. Biomass co-firing with general aspects and project specifics will be highlighted on example of a 240 MWth fluid bed boiler. Special consideration will be given to logistical aspects in a city like Berlin. The second part of the presentation informs about Vattenfall’s experiences in the usage of waste, which will be explained for the Jaenschwalde lignite power plant.
Ana Stanić - English Solicitor, E&A Law and Visiting Professor of Energy Law at CEU, Budapest
Abstract
This paper will discuss the package of new rules concerning energy infrastructure proposed by the European Union Commission in October last year and its implications for the region of South East Europe. In particular, it will (i) outline the Commission’s proposal for a Regulation on the guidelines for trans-European energy infrastructure, (ii) examine the SEE projects currently being considered to be included as EU priority projects as part of the Regulation and (iii) the work being done by the Energy Community to integrate the energy markets of the SEE into that of the EU.
Dejan Mandić, Milan Ćalović and Slobodan Milić - Energoprojekt Entel
Abstract
The problem of large commercial storage of electrical energy during low demand hours and its utilization in high demand hours presents, for a long time, one of the long lasting challenges for the professionals in the operations and planning of modern power systems. With the short summary of presently available and used storing technologies, this paper puts the main attention to the problem how to use pump storage (reversible) hydropower plants for the conversion of excessive electric energy in low-load periods to the high value hydro energy storage to be used for the generation of electric energy in high demand hours, through the cycles of turbine generation regime within the same hydroelectric power plant. The paper presents the short summary of the construction of such power plants in the world and in Serbia, as well as presently used technological solutions. Also, it it lists the main operating parameters of pumping storage hydroelectric power plants and discusses their role in modern power systems. Based on such analyses, it was possible to define economic and energy effects, with an aim to valorize their operation characteristics and possible economic effects. The procedure of the valorization is illustrated on the example of of operation of pump storage hydroelectric plant Bistrica within the open market of electric power system of Serbia (EPS), by emphasizing the mandatory procedure that should be followed within the process of decision-making in the planning phase of any reversible hydroelectric power plant.
Milan Ivanović, Sanja Ivković, Dragan Dabić, Nikola Georgijević, Dragan Popović - Electrical Engineering Institute Nikola Tesla, Koste Glavinića 8a, Belgrade
Abstract
In this paper, an overview of the preliminary results, obtained within Digsilent PowerFactory is given. Digsilent PowerFactory have been used as reference program for validating models used for the study "System parameters of excitation and turbine control for power plants in the EPS". Objective of the study is to capture, analyze and adjust the relevant parameters of the excitation and turbine control systems for all plants within EPS. The final objective is to improve the quality of regulation, to provide reserves for primary, secondary and tertiary frequency control and to provide resources for generation and absorption of reactive power for the primary voltage control. For the study, model of southeast Europe power system has been created in the DINST software, developed in the Electrical Institute Nikola Tesla. As a referent program, Digsilent PowerFactory has been used. In the paper, comparative results of measurements and simulations of the response voltage regulator on a stepping change of the reference voltage.
Prof. Milovan Studovic PhD, retired full professor - University of Belgrade, Mechanical Engineering Faculty
Abstract
This paper provides an overview of the current “portfolio” of infrastructure development, technological and operational performance of the energy production systems and economic indicators of energy companies in EU and SEE, in relation to the status in 2000 (as referent year), with impact of the economic recession after year 2008, on the economic effectiveness of the whole energy system (on both, production and demand side), as well as the evaluation of the potential consequences in the line to achieving desired and possible socio-economic development, within period 201o-2020, in “selected” EU and SEE countries.
In the context of the “imposed” options of the energy sector development, the analysis the influence of the relevant institutions and interest groups, on the authority and responsibility on the "imposed'' options of development is discussed, with the comments of their professional competencies for defining “portfolio” of so called “sustainable energy sector development”, in the line with society`s expectations, regarding of their social, safety, and environmental responsibilities, including also the certain economic effectiveness of energy industry operation.
Apstrakt
U radu se daje osvrt na tekući „portfolio’’ infrastrukturnog razvoja, tehnološke i operativne performanse proizvodnih sistema i ekonomske indikatore poslovanja energetskih subjekata u EU i JIE, u odnosu na 2000. godinu, te uticaja ekonomske recesije posle 2008. godine na ekonomsko poslovanje celine energetskog sektora (na strani proizvodnje i strani potrošnje energije) i procenom eventualnih posledica, u pogedu dostizanja poželjnog i mogućeg socio-ekonomskog razvoja, u periodu od 2015 do 2020. godine u „odabranim’’ zemaljama EU i JIE.
U kontekstu „nametnutih’’ opcija razvoja energetskih sektora, analiziran je uticaj relevantnih institucija i interesnih grupa, sa stanovišta društvene nadležnosti i odgovornosti u formulisanju „nametnutih’’ opcije razvoja energetskog sektora, uključujući i njihovu profesionalnu kredibilnost u definisanju „portfolia’’ tzv. „održivog ravoja energetike’’ i društvene odgovornosti za socijalno prihvatljivo i ekonomski efektivno poslovanje energetskog sektora.
Зоран Бакић - Министарство финасија и привреде Републике Србије , Бранислав Ковачевић - ЈП Електропривреда Србије , Илија Ковачевић - Про-ИНГ д.о.о. Београд
Abstract
У процесу успостављања новог и модерног система инфраструктуре квалитета (ИК), као будућег кључног сегмента унутрашњег тржишта и слободног протока роба, морају се постићи три основна циља: 1. стављање на тржиште безбедних производа са постепеним уклањањем техничких баријера у трговини, 2. јачање заштите потрошача и 3. унапређење конкурентности српске привреде. Наиме, заокруживањем новог система инфраструктуре квалитета у Србији, Република Србија ће бити неколико корака ближе евроинтеграцијама и њеним вредностима.
Четири новоусвојена закона који чине, основу ИК. Закон о акредитацији, Закон о стандардизацији, Закон о метрологији и Закон о техничким захтевима за производе и оцењивање усаглашености, суштински представљају покретач бољег функционисања свих значајних институција ИК.
Захваљујући постепеном спровођењу нових закона ИК, индустрији у Србији на располагању су нова именована тела за оцењивање усаглашености одређених индустријских производа, нова овлашћена тела за оверавање мерила, нови једноставнији поступци када је реч о увозу, извозу, производњи и оцењивању усаглашености. Ово су све разлози због којих учесници у области ИК у Републици Србији (потрошач, произвођач, увозник, извозник, па и држава) могу да одахну, те да буду сигурнији у компатибилну и конкурентну улогу српске привреде на европском и светском тржишту.