Scientific Research and Publications

In the field of power transmission systems I have done scientific research especially on electromechanical oscillations and their damping estimation based on real-time measurements. The research on this topic is related to increasing power transfer capacity and improving power system security. I have reviewed articles of the following journals: IEEE Transactions on Power Systems, IEEE Transactions on Smart Grid, European Transactions on Electrical Power, IEEE Power Engineering Letters.

List of Publications

SCIENTIFIC ARTICLES

J. Turunen, J. Thambirajah, M. Larsson, B. C. Pal, N. F. Thornhill, L. Haarla, W. W. Hung, A. M. Carter, and T. Rauhala: Comparison of Three Electromechanical Oscillation Damping Estimation Methods. IEEE Transactions on Power Systems, vol. 26, no. 4, Nov. 2011, pp. 2398-2407.

J. Turunen, M. Larsson, J. Thambirajah, L. C. Haarla, and T. Rauhala: Recent Developments in Modal Estimation of Power System Electromechanical Oscillations. IEEE PowerTech, 19–23 June 2011, Trondheim, Norway.

J. Turunen, L. Haarla, and T. Rauhala: Performance of Wavelet-based Damping Estimation Method under Ambient Conditions of the Power System. 2010 IREP Symposium – Bulk Power System Dynamics and Control – VIII (IREP), August 1–6, 2010, Buzios, RJ, Brazil.

J. Turunen, T. Rauhala, and L. Haarla: Selecting Wavelets for Damping Estimation of Ambient-excited Electromechanical Oscillations. IEEE Power & Energy Society General Meeting, 25–29 July 2010, Minneapolis, MN, USA.

J. Turunen, M. Larsson, P. Korba, J. Jyrinsalo and L. Haarla: Experiences and Future Plans in Monitoring the Inter-area Power Oscillation Damping, IEEE Power & Energy Society General Meeting, 20–24 July 2008, Pittsburgh, PA, USA.

P. Heine, J. Turunen, M. Lehtonen, and A. Oikarinen: Measured Faults during Lightning Storms. IEEE PowerTech, 27–30 June 2005, St. Petersburg, Russia.

MONOGRAPHS

Turunen, J. (2011) Doctor of science in technology. A Wavelet-based Method for Estimating Damping in Power Systems. Doctoral dissertation, Aalto University School of Electrical Engineering, Aalto University publication series Doctoral Dissertations 16/2011, Espoo 2011, pp. 128 p. + app. 10 p. ISBN 978-952-60-4050-9 (printed), 978-952-60-4051-6 (pdf), ISSN 1799-4934 (printed), 1799-4942 (pdf). http://lib.tkk.fi/Diss/2011/isbn9789526040516/

Turunen, J. (2005) Master of Science in Electrical Engineering, Helsinki University of Technology. Monitoring of Power Oscillations in Power System. Thesis prepared at Fingrid Oyj in Finnish.

OTHER STUDIES

Turunen, J. (2006): Vulnerability and Protection of Power System against Electronic Warfare Attack. An investigation of which kind of threats the electronic warfare causes to the power system and how the system can be protected against such attacks. Military Technology Department, National Defence University and Department of Electrical and Communications Engineering, Helsinki University of Technology. Prepared in Finnish.

Turunen, J., Vitie, M. (2005): Coal and Brown Coal, Potential and Possibilities for Carbon Capture and Storage. Seminar work in the field of energy economics. Relatively comprehensive worldwide overview of coal’s potential as an energy source, its environmental impacts, and the possibilities for capturing and storing the carbon dioxide in different sinks. Prepared in Finnish.

Turunen, J. (2004): Study of Distribution Grid Faults Measured at Two Substations. Special assignment. Power Systems and High Voltage Engineering, Helsinki University of Techonology. Detailed investigation of different fault types and their frequencies of occurrence measured at two substations. Prepared in Finnish.

Research Projects

NORTH NORWAY/NORTH FINLAND OSCILLATION RESEARCH PROJECT

The main research idea in the project is to evaluate the issues related to the system security and restricted transmission capability in different network development scenarios of North Finland and Norway. The idea is also to analyze different concepts that can be applied to improve the system security and the transmission capability including:

• Wide-area monitoring
• System protection schemes based both on traditional approaches as well as wide-area measurement based data-driven methods
• Power oscillation damping and stability enhancement controls based both on traditional as well as on wide-area based approaches

The project has three main partners: Statnett, Fingrid, and Aalto University. The project started in spring 2012 and continues until 2015. I am managing this project.

STRONGRID PROJECT

The STRONgrid (Smart Transmission Grid Operation and Control) project seeks to develop better tools for addressing the increasing need to move electricity across national borders. More interconnected electricity grids in both the Nordic region and Europe are seen as an important facilitator of more sustainable energy systems, and international cooperation is critical in achieving this vision.

The project involves universities and transmission system operators from the Nordic countries. Our research group of Transmission Systems is one of the main partners in the project. I will also work in this project between 2012 and 2015.

REAL-SMART PROJECT

The EU-project REAL-SMART (Using real-time measurements for monitoring and management of power transmission dynamics for the Smart Grid) started its co-operation in 2008 by developing damping estimation algorithms and organizing workshops with ABB Corporate Research in Switzerland, National Grid and Imperial College in the UK, and Helsinki University of Technology and Fingrid in Finland. It is now a European Union FP7 Marie Curie IAPP (Industry-Academia Partnerships and Pathways) project that started in 2010 including ten partners. The co-ordinator of the project is Imperial College London.

IAPP is a program where the researchers and engineers in industry visit foreign universities and vice versa. The visits are funded by EU. The partners in this program are the Imperial College of Science, Technology and Medicine (UK, the co-ordinator of the project), ABB Schweiz AG (Switzerland), ABB AS (Norway), ABB SP (Poland), Fingrid Oyj (Finland), General Electric Deutschland Holding GmbH (Germany), Technische Universität Graz (Austria), National Grid Electricity Transmission (UK), Statnett SF (Norway), and Aalto University School of Science and Technology (Finland).

I had 9 months of international secondment at ABB Switzerland, National Grid, and Statnett. Aalto University hosted three months secondment of an experienced researcher from ABB Corporate Research Switzerland. Aalto University also hired an international postdoctoral researcher for 1.5 years from Indian Motilal Nehru National Institute of Technology university, starting from autumn 2012.

The REAL-SMART project presents a balanced program of applied research and development to address measurement-based monitoring and management of the high voltage transmission grid. It involves electrical transmission system operators, companies that supply technologies and components, and universities. The REAL-SMART consortium is interdisciplinary with experts in electrical power systems, modelling, instrumentation, signal analysis, equipment condition monitoring, and automation of oil & gas processes. The consortium conducts research and undertakes secondments to transfer experience and knowledge both ways between academia and industry. The project integrates in-depth understanding about the power system operational issues with the analysis of state-of-the-art measurements. It will invent and develop state-of-the-art tools that will be deployed by the transmission system operators, and will produce trained and experienced personnel. The project aims to take a pivotal role in the creation of technology for the intelligent operation of the wide-area transmission grids of the future.

SGEM PROJECT

The aim of the Smart Grids and Energy Markets (SGEM) research program is to develop smart grid solutions that can be demonstrated in a real environment. My task Wide-area Monitoring and Control (WAMC) belongs under the work packet High Voltage Smart Grids. I worked in the project during years 2010-2012.

PHD PROJECT

The PhD project on inter-area oscillation damping was started in January 2007. In March 2011, I defended my PhD thesis “A Wavelet-based Method for Estimating Damping in Power Systems.”

The project goal was first to study systematically the factors affecting the inter-area oscillation damping and the means to improve damping. The project goal was later refined to develop methods for monitoring the damping real-time from the PMU measurement data. During the project international contacts were established with professionals working in the area, in order to reach high level research.

MSC PROJECT

I carried out my MSc project at Fingrid Oyj in 2005. In the project, I assessed the accuracy and usability of the commercial wide-area monitoring methods.