workshop on synchrophasors and control applications for power systems

Workshop on

Synchrophasors and Control Applications for Power Systems

KTH Royal Institute of Technology, SmarTS Lab, Stockholm, Sweden

Location: Q2, Osquldas väg 10, Stockholm, Sweden

Wednesday, March 16, 2016

9:00 – 9:10 Coffee and Refreshments

9:10 - 9:20 Welcome and introduction

Vedran Perić, KTH

9:20 - 10:10 SmartTS Lab: Overview and Major Projects

Luigi Vanfretti, KTH

10:10 - 11:00 Near On-line Estimation of hydro power plant transfer functions from phasor measurements

Kjetil Uhlen, NTNU

11:00 - 11:10 Coffee break

11:10 - 12:00 PMU-based protection for grid operation applications – Wide Area Monitoring platform and controlled islanding

Marjan Popov, TU Delft

12:00 - 13:40 Lunch break

13:40 - 14:30 Real-time Oscillation Monitoring with Large-Scale PMU data

Mani Venkatasubramanian, Washington State University

14:30 - 15:20 Without tailored modeling data, no satisfactory control at a reasonable cost

Xavier Bombois, Laboratoire Ampère UMR CNRS 5005

15:20 – 15:30 Coffee break

15:40 – 16:30 Ultracapacitor Based Supplementary Excitation Module for Improvement of Synchronous Generator Transient Stability

Luis Rouco, Universidad Pontificia Comillas

16:30 – 17:20 The l1 heuristic for the estimation of piecewise constant/linear signals

Cristian Rojas, KTH

Presenters biographies and talk abstracts

Luis Rouco Rodriguez Title: Ultracapacitor Based Supplementary Excitation Module

for Improvement of Synchronous Generator Transient Stability

Talk summary:

Grid codes were compiled by the TSOs to regulate the activities of the new agents after the liberalization of the electricity sector. Grid codes include some requirements that are not demanded by the international standards like the Voltage Ride Through Capability (VRTC). VRTC are voltage against time curves that every generator must sustain without tripping from the grid. However, most of the synchronous generators are not able to fulfil these requirements with current technology. New solutions are being investigated my generator manufacturers. Ultracapacitor Based Supplementary Excitation Module (UBSEM) has been proposed to cope with grid codes VRTC requirements. This device is aimed at boosting the field voltage during voltage sags in order to increase the generator critical clearing time and therefore improving the generator angular stability.

Biography:

Luis Rouco obtained his “Ingeniero Industrial and “Doctor Ingeniero Industrial degrees from Universidad Politécnica de Madrid in 1985 and 1990 respectively.

He is Professor of Electrical Engineering in the Department of Electrical Engineering of the School of Engineering of Universidad Pontificia Comillas.

He served as Head of the Department from 1999 through 2005. He develops his research activities at Instituto de Investigación Tecnológica(IIT). Prof. Rouco is the President of the Spanish Chapter of the Power and Energy Society of IEEE, Member of Cigré and Member of the Executive Committee of Spanish National Committee of Cigré. He has been visiting scientist at Ontario Hydro, MIT and ABB Power Systems.

Kjetil Uhlen Title : Near On-line Estimation of hydro power plant transfer

functions from phasor measurements

Biography:

Kjetil Uhlen received the Master’s and Ph.D. degrees in control engineering in 1986 and 1994, respectively. He is Professor in power systems at the Norwegian University of Science and Technology (NTNU), Trondheim, Norway, and a Special Adviser at Statnett (the Norwegian TSO). His main areas of work include research and education in control and operation of power systems, power system dynamics, and wind power integration.

Xavier Bombois Title: Without tailored modeling data, no satisfactory control at

a reasonable cost

Talk summary:

In this presentation, we will give an overview of our activities on optimal identification experiment design. Our general objective is to determine the least disturbing identification experiment while guaranteeing that the uncertainty of the identified model is small enough for the intended use of this model (e.g. the design of a satisfactory control law, monitoring,...). We will pay attention both to the general philosophy and to recent applications of this philosophy in real-life problems and we will finish by giving some perspectives for the future.

Biography:

Xavier Bombois was born in Brussels in1974.He received the Electrical Engineering and Ph.D. degrees from the Université Catholique de Louvain, Louvain-la-Neuve, Belgium, in 1997 and 2000, respectively.

After his Ph.D. dissertation, he joined the Delft University of Technology, Delft, The Netherlands, where he was appointed an Assistant Professor with the Delft Center for Systems and Control in 2001. Since February 2015, he has been a CNRS Research Director with Laboratoire Ampère, Ecole Centrale de Lyon, Ecully, France.

His main interests are identification for control, prediction error identification, optimal experiment design, uncertainty bounding and robust control. Mr. Bombois is an associate editor for the IFAC journal Control Engineering Practice and for the Conference Editorial Board of the IEEE Control Systems Society.

Marjan Popov Title: PMU-based protection for grid operation applications – Wide Area Monitoring platform and controlled islanding

Talk summary:

The talk will present a real-time Wide Area Monitoring platform as well as techniques for emulation and benchmarking of an existing Wide Area Monitoring Communication Network. In addition, the talk will discuss intelligent controlled islanding scheme based on slow coherency

Biography:

Marjan Popov received the Dipl.-Ing. degree from the Ss. Cyril and Methodius University, Skopje, Macedonia, in 1993 and the Ph.D. degree in electrical power engineering from the Delft University of Technology (TU Delft), Delft, The Netherlands, in 2002.

He is currently an Associate Professor of electrical power engineering at TU Delft.

His research interests are large-scale power system transients, intelligent protection for power systems, and wide area monitoring and protection.

He is a member of CIGRE (International Council on Large Electric Systems) and Dutch national SC B5 and actively participated in CIGRE JWG C4.402 and JWG A2/C4.39 as well as CIGRE JWG A2/C4.52. Prof. Popov received the prestigious Dutch Hidde Nijland award in 2010 for extraordinary research achievements in the field of electrical power engineering in The Netherlands. He is also a recipient of the IEEE PES Prize Paper Award and IEEE Switchgear Committee Award in 2011.

Vaithianathan “Mani” Venkatasubramanian

Title: Real-time Oscillation Monitoring with Large-Scale PMU

data.

Talk summary:

The talk will discuss different algorithms for Real-time Oscillation Monitoring with Large-Scale PMU data that have been developed at Washington State University.

Biography:

Vaithianathan “Mani” Venkatasubramanian received the B.E. (Hons.) degree in electrical and electronics engineering from the Birla Institute of Technology and Science, Pilani, India, in 1986, and the M.S. and D.Sc. degrees in systems science and mathematics from Washington University, St. Louis, MO, USA, in 1989 and 1992, respectively.

He is currently a Professor with Washington State University, Pullman, WA, USA.

His current research interests include nonlinear system theory and power system stability and control.

Luigi Vanfretti Title: SmartTS Lab: Overview and Major Projects Talk summary: Modeling and Simulation tools have a broad set of applications in power systems, from infrastructure planning, through real-time testing of components, and even for operator decision support systems. Open modeling and simulation standards may have a large role to play in the development of the Smart Grid, which will have to overcome challenges related to the design, operation and control of cyber-physical and sustainable electrical energy systems. Efforts in this direction, mostly obtained in the EU FP7 iTesla project, will be discussed during the talk.

In addition, simulation tools are essential to the development of Smart Grid applications - Wide-Area Monitoring, Control and Protection Systems (that is Synchrophasor Technology) are the key to Smart Grid development for the Smart Grid. The speaker has over 10 years of experience developing concepts, methods, and software prototypes of tools that can help in power system operation, monitoring, control and protection. Results from on-going efforts in the STRONgrid project regarding applications in transmission networks, and in the EU FP7 IDE4L project for distribution networks, will be also presented during the talk.

This talk will provide a motivation for the topics discussed above, and sample results from the aforementioned projects.

Biography:

Luigi Vanfretti received the Electrical Engineering degree from Universidad de San Carlos de Guatemala, Guatemala City, Guatemala, in 2005, and the M.Sc. and Ph.D. degrees in electric power engineering from Rensselaer Polytechnic Institute, Troy, NY, USA, in 2007 and 2009, respectively.

He was a Visiting Researcher with The University of Glasgow, Glasgow, Scotland, in 2005. He became an Assistant Professor with the KTH Royal Institute of Technology, Stockholm, Sweden, in 2010 and was conferred the Swedish title of “Docent” in 2012, and obtained a tenured Associate Professor position in 2013.

He is the Principal Investigator at KTH for the FP7 EU projects iTesla and IDE4L, and for the NER-funded project. He is currently a Special Advisor in R&D Strategy and International Collaboration for the Research and Development Division of Statnett SF, the Norwegian transmission system operator; where he has previously held positions as Special Advisor in Strategy during 2013–2014, and as external scientific advisor during 2011–2012. He is an advocate and evangelist for free/libre and open source software. His research interests are in the general area of power system dynamics, while his main focus is on the development of applications of PMU data.

Dr. Vanfretti, has served, since 2009, in the IEEE Power Engineering Society (PES) PSDP Working Group on Power System Dynamic Measurements, becoming Chair in 2014. In addition, from 2009 to 2014, he served as Vice-Chairof the IEEE PES CAMS Task Force on Open Source Software. For his research and teaching work toward his Ph.D. degree, he was awarded the Charles M. Close Award from Rensselaer Polytechnic Institute.

Cristian Rojas Title: The l1 heuristic for the estimation of piecewise constant/linear signals Talk summary: In this talk, we will discuss the use of the l1 heuristic for segmenting time series with respect to changes in the mean or variance. This technique and its variants, known as the fused lasso, total variation denoising, l1 trend filtering, ..., has been also successfully used to address other tasks, such as detecting faults, filtering images, segmenting ARX models, or estimating threshold policies in Markov decision processes. Given the wide range of applications of the fused lasso, a relevant question to address is when does it work, i.e., when does the fused lasso determine the true change points of the underlying signal (e.g., mean or variance).

We will consider here this question for piecewise constant and piecewise linear signals, in an approximate support set recovery consistency sense, as the number of samples tends to infinity. An important aspect revealed by our analysis lies in the fact that the true change points can be found within an arbitrarily small neighborhood only in the absence of the so-called staircase problem. If time permits, we will also discuss how to mitigate this problem by suitably modifying state-of-the-art linear complexity algorithms for the fused lasso.

Biography:

Cristian Rojas was born in 1980. He received the M.S. degree in electronics engineering from the Universidad Técnica Federico Santa María, Valparaíso, Chile, in 2004, and the Ph.D. degree in electrical engineering at The University of Newcastle, NSW, Australia, in 2008.

Since October 2008, he has been with the Royal Institute of Technology, Stockholm, Sweden, where he is currently an Associate Professor of the Automatic Control Lab, School of Electrical Engineering.

His research interests lie in system identification and signal processing.