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Jiang L.,Grid Energy Research Institute | Wang C.,Grid Energy Research Institute | Huang Y.,China Electric Power Research Institute | Pei Z.,National Electrical Power Dispatching and Control Center | And 4 more authors.
IEEE Power and Energy Magazine | Year: 2015

Variable generation (VG) in China is primarily wind and photovoltaic (PV) power. By the end of 2014, the cumulative installed capacity of VG in China reached 123.86 GW, accounting for 9.1% of the country?s total generation capacity. The cumulative installed capacity of wind and PV power were, 95.81 GW and 28.05 GW, respectively. The total amount of energy generated from VG in 2014 was 181 TWh (of which wind power was 156 TWh and PV power 25 TWh), accounting for 3.3% of total electricity generation. The newly installed capacity of wind and PV power in 2014 was 19.5 GW and 10.6 GW, respectively, accounting for 28% of the newly installed capacity of all generation types. Following coal-fired power and hydropower, wind has already become China?s third-largest power source both by capacity and by power generation, after nine years of high-speed growth. A rapid development of PV power generation has been experienced since 2010. The newly installed PV capacity in 2013 and 2014 reached over 10 GW for two consecutive years, accounting for about one-third of newly installed PV capacity worldwide over the same period. By capacity, PVs have become China?s fifth largest generation source after natural gas based generation. © 2003-2012 IEEE.

Ackermann T.,Energynautics GmbH | Carlini E.M.,TERNA S.p.A | Ernst B.,Eirgrid Plc | Groome F.,Eirgrid Plc | And 5 more authors.
IEEE Power and Energy Magazine | Year: 2015

In recent months, energy policy in the ?European Union (EU) has started to focus on the concrete actions required to ensure the realization of a functioning internal energy market in the context of high levels of renewable energy in the post-2020 period. The most important developments include the agreement by the European Council on energy and climate targets for 2030 and the launch of the Energy Union by the European Commission in February 2015. Against the political agreement already reached that the EU would reduce its greenhouse gas (GHG) emissions by 80% by 2050, European leaders have adopted a set of interim climate change and energy targets that include, for instance-a legally binding target for a reduction in EU GHG emissions of 40% by 2030 compared to 1990-a legally binding target of at least 27% at the EU levelfor the share of renewable energy consumed in the EU in 2030-an indicative (nonbinding) target of at least 27% at the EU level for improving energy efficiency in 2030 compared to projections of future energy consumption based on the current criteria. © 2015 IEEE.

Begluk S.,Vienna University of Technology | Troster E.,Energynautics GmbH | Schlager R.,Vienna University of Technology | Gawlik W.,Vienna University of Technology
IET Conference Publications | Year: 2013

Due to climate change and limitations of fossil energy sources, political goals that lead towards a massive increase in renewable and distributed generation, e.g. photovoltaic (PV), wind power, etc. have been proposed. However renewable generation units increase the volatility of electricity production, are only conditionally controllable and are characterized by low full load hours. These negative aspects challenge the integration of renewable energy sources into the electrical grid. Remedial measures that can be applied are the integration of hybrid energy storage in the existing energy system and the use of installed PV systems for voltage support. Hybrid energy storage balances deviations in generation and load. By providing reactive power, PV systems can limit the increased voltage level, which can be observed especially in weak grids in case of a reversed load flow due to a high power production. This paper is going to describe how to achieve a decentralized generation-load-balance by coupling the existing infrastructures (electrical, gas and thermal networks), using decentralized hybrid storage, enabling a massive integration of renewable energy sources into electrical distribution systems, as examined in the project "Symbiose". Parallel to the work of "Symbiose", benefits of voltage support by PV systems in the German distribution network will be presented.

Dubaric E.,Swedish Patent and Registration Office | Giannoccaro D.,Swedish Patent and Registration Office | Bengtsson R.,Swedish Patent and Registration Office | Ackermann T.,Energynautics GmbH
World Patent Information | Year: 2011

This paper reports a study into the use of patent application numbers as indicators of technological development in the field of wind power technology. We show that patent information can be used to analyse the evolution and the level of maturity of this particular technology. The data is gained from databases available at the Swedish Patent and Registration Office (PRV). Three different segments of wind power technology; rotor form, regulation and pitch adjusting, are distinguished and maturity in respective parts is compared to the general technological progress. © 2010 Elsevier Ltd.

Ackermann T.,Energynautics GmbH | Ellis A.,Sandia National Laboratories | Fortmann J.,RE Power Systems SE | Matevosyan J.,Electric Reliability Council of Texas | And 7 more authors.
IEEE Power and Energy Magazine | Year: 2013

Grid codes (GCs) and dynamic wind turbine (WT) models are key tools to allow increasing renewable energy penetration without challenging security of supply. In this article, the state of the art and the further development of both tools are discussed, focusing on the European and North American experiences. © 2003-2012 IEEE.

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