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Varela J.,Iberdrola | Hatziargyriou N.,National Technical University of Athens | Puglisi L.J.,Iberdrola | Bissel G.,ENEL S.p.A | And 3 more authors.
IEEE Power and Energy Magazine | Year: 2015

THE TERM "RESILIENCE" MEANS THE ABILITY TO prepare for and adapt to changing conditions and to withstand and recover rapidly from disruptions. Active distribution grids can provide support to system resilience in both aspects, more specifically to help system recovery and provide the necessary flexibility to adapt to changing conditions. © 2015 IEEE.


Lumetzberger M.,Salzburg AG | Kitzler C.,IGT Geotechnik und Tunnelbau ZT GesmbH
Geomechanik und Tunnelbau | Year: 2013

The "KW Bärenwerk" power station project is currently being implemented by the Salzburg AG. This article reports in detail how extensive surveys of the existing condition formed the basis for innovative decisions making by the company. The investigations carried out above and below ground in the period 2009-2010 were the basis for an objective consideration of the decision whether to repair the existing tunnel system or construct a new tunnel. First the power station and its current facilities are described, with particular emphasis on the headrace and headrace tunnel. The investigations and analyses are also described in detail, and how the knowledge gained was used in the design process. A possible decision-making process is described, with a comparison of the most important features in order to differentiate between repair and new construction. The report ends with the state of the works that are currently underway. © 2013 Ernst & Sohn Verlag für Architektur und technische Wissenschaften GmbH & Co. KG, Berlin.


Strasser H.,Sir Salzburger Institute For Raumordnung Und Wohnen | Dorfinger N.,Salzburg AG | Mahler B.,Steinbeis Transferzentrum
Energy Procedia | Year: 2012

Lehen is the largest district of City of Salzburg, close to the city centre and with high quality of infrastructure of public transport. Since the last decades the district was confronted with essential changes. The use of the area of the former utility means a huge potential for further development of the district. High share of renewable energy should be the main focus of the project, considering existing heat supply with district heating. High standards of buildings and large-scale solar system are the main elements of the energy concept. The use of a heat pump ensures an efficient increase of solar gains and leads to low primary energy demand resp. CO2-emissions. The new building area was also seen as a chance for modernization activities in existing building stock around. Energy efficient pumps and lightning as well as PV modules in the facades ensure high share of renewable energy also for electricity demand. First results show the way for further projects - concerning effective steering of complex processes and technologies to achieve total CO2-reductions in urban areas. © 2012 The Authors.


Wimmer K.,Verbund AG | Tscherne G.,Salzburg AG | Draxler B.,SWM Services Energie und Wasser GmbH
VGB PowerTech | Year: 2011

The support of renewable energy sources is a mayor target of the European energy policy. To achieve the EU 2020 target many EU member states will develop their available hydro-power potential together with utilisation of other renewable energy sources. Most of the economic feasible hydro power potential in Europe is already developed and new legal and regulatory frameworks (e.g. Water Framework Directive, liberalization of electricity markets) make it more and more difficult to exploit still existing hydro power potentials. In this context, the realisation of hydro-power schemes in an urban environment becomes an important task with a particular challenge for project owners and planers. Based on four selected schemes in Austria and Germany, the present paper reports about the requirements for project development, regulatory framework, project execution and operation. Present executed projects are success stories for implementation of hydro power under new regulatory and economic framework in an urban environment.The reasons for success can be outlined as follows: - Minimisation of environmental impact by using existing structures, - Minimisation of cost through optimised design, implementation of new technologies and professional project management, - Minimisation of risks and conflicts in due time through participation of people and institutions involved.


Reiter D.,Salzburg AG
Euroheat and Power (English Edition) | Year: 2013

Mathematical energy system models were used to form a rational decision basis for the future design of the heat supply system in the City of Salzburg/Austria. Based on a building database, heat demand and supply were modeled in a resolution of 250 x 250 m2. It was free to achieve heat savings by implementing specific reconstruction and thermal insulation measures at certain investment costs. The resulting heat demand scenarios were transferred to the heat supply model which also mapped the existing energy infrastructure including DR and gas grid. Different boundary conditions were defined in two strategies, business as usual (BAU) and EU 20-20-20 targets. A comprehensive building database was established. It comprises attributes like gross floor area, year of construction, geometry, heat demand and energy carrier for heat supply for each of roughly 32,000 buildings in the city. The heat demand development for each cell was a major input to the heat supply model.


Sumereder C.,University of Graz | Dolcic M.,Salzburg AG
Proceedings of the International Symposium on Electrical Insulating Materials | Year: 2014

The insulation system of a generator is stressed by electrical, mechanical and thermal loads during the whole lifetime. By the means of diagnostic measurements the worsening of the condition within the dielectric system can be evaluated. To ensure the operational safety for the next maintenance period a hipot test with raised level can be applied. In spite of all carefulness it can happen that a breakdown of the insulation system happens. Beside the costs and required time for machine repair contractual damages can result in high costs for the operator. © 2014 The Institute of Electrical Engineers, Japan.


The gap between supply and demand of electricity in Austria increased, especially since the year 2001. Therefore we have to develop new strategies to sustain the security of energy supplies, especially in Austria. Hydropower projects within urban areas are predestinated to demonstrate the major benefit of this fully developed and approved technology. Besides that, these kinds of projects can play an important part to solve the difference between supply and demand. The efficiency of this technology is still state of the art and together with its unique feature, the multifunctionality, hydropower is still competitive in the long run. Especially the run of river project Sohlstufe Lehen, inside the city of Salzburg, is a prime example to demonstrate the main benefits of this kind of technology.

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