Faculty of Electrical and
Power Engineering
Kronvalda blv. 1, Riga, LV-1010
Phone +37167089900
15 October 2009, at 10.00
Faculty of Electrical and Power Engineering,
Kronvalda blv. 1, room 21
Prof. J. Gerhards, RTU
9.00 – 11.00
9.30 – 9.45
Opening Speech
Prof. J. Gerhards
Dean of Faculty of Power and
Electrical Engineering, RTU
Scientific Research at RTU in 2008.
Present Situation and Perspective.
Prof. L. Ribickis
Vice-Rector of Science and
Director of Institute of Industrial
Electronics and Electrical
Academician of Latvian Academy of
Power Systems Development
Planning in Uncertainty and Market
Prof. A. Sauhats
Director of the Institute of Power
Corresponding Member of Latvian
Academy of Sciences
The action plan and model for
increase of energy efficiency and use
of renewable energy resources in
Prof. Dagnija Blumberga
Director of Institute of Energy
Systems and Environment
Today’s Development of Power
System Sector of Bulgaria
Prof. N. Djagarov
Technical University of Varna,
Electrical Department, Bulgaria
Coffee break
9.45 – 10.00
10.00 – 10.15
10.15 – 10.30
10.30 -10.45
11.00 – 11.30
Section „Power and Electrical
Scientific committee:
A. Bačauskas KTU, Lithuania
L. Boroņina
STU, Russia
V. Bražis
RTU, Latvia
M. Budahs
Latvenergo, Latvia
V. Čuvičins
RTU, Latvia
R. Deksnis
KTU, Lithuania
J. Dirba
RTU Latvia
J. Ekmanis
FEI, Latvia
I. Galkins
RTU, Latvia
J. Gerhards
RTU, Latvia
J. Greivulis
RTU, Latvia
K. Ketners
RTU, Latvia
M. Kolcun
TUK, Slovakia
V. Krēsliņš
LEEA, Latvia
O. Krievs
RTU, Latvia
N. Kuņicina
RTU, Latvia
L. Latkovskis FEI, Latvia
J. Laugis
TTU, Estonia
T. Lehtla
TTU, Estonia
A. Mahņitko
RTU, Latvia
A. Meļko
Latvenergo, Latvia
V. Neimane
Vattenfal, Sweden
R. Neimanis
General Electric, Sweden
E. Pettai
TTU, Estonia
FEI, Latvia
I. Raņķis
RTU, Latvia
L. Ribickis
RTU, Latvia
A. Riosin
TTU, Estonia
A. Sauhats
RTU, Latvia
J. Stabulnieks FEI, Latvia
A. Šņīders
LLU, Latvia
M. Valdma
TTU, Estonia
E. Vanzovičs
RTU, Latvia
D. Vinnikov
TTU, Estonia
V. Vodovozov TTU, Estonia
S. Vitolina
L. Zemite
I. Galkin
V. Strelkovs
RTU, Latvia
RTU, Latvia
RTU, Latvia
RTU, Latvia
Organizing Committee:
O. Krievs
RTU, Latvia
A. Ziravecka
RTU, Latvia
O. Petrovska
RTU, Latvia
Conference Secretariat:
Riga Technical University
Faculty of Power and Electrical Engineering
Kronvalda blv. 1, Riga, LV-1010, Latvia
Phone: +371 67089942; +371 67089918; +371 67089418
Fax: +371 67089418
Section “Power and Electrical
Subsection “Power Engineering”
15 October 2009, at 11.30
Faculty of Power and Electrical Engineering,
Kronvalda blv. 1, room 21
Prof. A. Sauhats, RTU
11.30 – 11.45
J. Linciks, Dz. Baranovskis
Single Phase Earth Fault Location in the Medium
Voltage Distribution Networks
11.45 – 12.00
Price of Water
J. Survilo, D. Borejko (Latvia)
12.00 – 12.15
A. Galkina, N. Kunicina,
Y. Chaiko (Latvia)
Increasing Efficiency of Electrical Supply Model for
Small Enterprises in Rural Regions
12.15 – 12.30
N. Tomin, V. P. Gerikh,
I. N.Kolosok, V. G. Kurbatsky
Neural Network Forecasting of Prices in the
Liberalized Electricity Market
12.30 – 12.45 L Zemite, J.Gerhards (Latvia)
Evaluation of Distribution Network Customer Outage
12.45 – 13.00
S. Guseva, O. Borscevskis,
N. Skobeleva, N. Breners
Load Forecasting till 2020 of Existing and Perspective
Transformer Substations in Riga
13.00 – 13.15 J. Survilo, A. Kutjuns (Latvia)
Operation Modes of HV/MV Substations
13.15 – 13.30 A. Lvovs, A. Staltmanis (Latvia)
Selection of Schemes of Switchgears for New 110kV
13.30 – 13.45 G. Georgiev (Bulgaria)
Control of Steam-Turbine Regulators at Transition to
an Island State
13.45 – 14.00
14.00 – 14.30
Coffee break
14.30 – 14.45
G. Georgiev (Bulgaria),
I. Zicmane (Latvia),
E. Antonov (Latvia)
Finding of the Rational Approach at the Decision of a
Question of Compensation in High Voltage Networks
14.45 – 15.00 A. Mesnajevs, A. Zviedris (Latvia)
Determination and Analysis of Synchronous Motor’s
15.00 – 15.15
J. Dirba, N. Levin, S. Orlova,
V. Pugachov (Latvia)
Optimization of the Magnetic Circuit of an Axial
Inductor Machine
15.15 – 15.30 G.Dilevs, E.Jakobsons (Latvia)
The Generated Power of Multipole Induction
Generator with Secondary Winding on the Stator
15.30 – 15.45 I.Uteshevs, A.Levcenkovs (Latvia)
Modeling of Overheat Process Control of Electric
15.45 – 16.00 K. Berzina, E. Ketnere (Latvia)
Simulation of Gas-turbine Driven Device
16.00 – 16.15
M. Konuhova, K. Ketners,
E. Ketnere, S. Klujevska (Latvia)
Investigations of the Undamped Field Effect to the
Electromagnetic Processes in the Induction Machines
16.15 – 16.30 G. Gavrilovs, S. Vitolina (Latvia)
Solid Insulation Drying of 110 kV Paper-oil
Instrument Transformers
16.30 – 16.45
U. Antonovics, V. Brazis,
J. Greivulis (Latvia)
The Mechanical Transient Process at Asynchronous
Motor Oscillating Mode
16.45 – 17.00 M. Kizlo, A. Kanbergs (Latvia)
The Causes of the Parameters Changes of Soil
17.00 – 17.30
Subsection “Electrical Engineering”
15 October 2009, at 11.30
Faculty of Power and Electrical Engineering,
Kronvalda blv. 1, Assembly Hall
Prof. L. Ribickis, RTU
11.30 – 11.45 E. Kamolins (Latvia)
The Comparative Analysis of Inductor and Reluctance
Wind Generators
11.45 – 12.00
D. Vinnikov, T. Jalakas,
I. Roasto (Estonia)
Analysis and Design of 3.3 kV IGBT Based ThreeLevel DC/DC Converter with High Frequency
Isolation and Current Doubler Rectifier
12.00 – 12.15 A. Sokolovs, I. Galkins (Latvia)
Analysis of Gate Drivers for Overvoltage Suppression
in Matrix Converters for Integrated Drives
12.15 – 12.30
A. Stepanovs, L.Bisenieks,
A.Sokolovs, I.Galkins (Latvia)
Development of a Modular Power Converter
12.30 – 12.45
A.Andreiciks, K. Vitols,
O. Krievs, I. Steiks (Latvia)
Current Fed Step-up DC/DC Converter for Fuel Cell
Inverter Applications
12.45 – 13.00
I. Rankis, A. Ziravecka, I.Bunina
Investigation of the Input Unit of Frequency Converter
13.00 – 13.15 A.Vitols, I. Rankis (Latvia)
Experimental Results from Physical Model of
Bidirectional Power Flow Regulator for Power
Substations of Electrical Transport
13.15 – 13.30
P. Chandrasekhar,
S. Rama Reddy (India)
Low Cost Embedded Controlled Full Bridge LC
Parallel Resonant Converter
13.30 – 13.45
N. Djagarov, Z. Grozdev,
M. Bonev (Bulgaria)
Improvement the Work Effectiveness of Static VAR
Compensators by Using of Two-input Adaptive
13.45 – 14.00
14.00 – 14.30
Coffee break
14.30 – 14.45
I. Galkins, A. Avotins,
A. Suzdalenko, L. Ribickis
Comparison and Choice of Supply and Driver Unit for
Power LED Luminary
14.45 – 15.00 V. Karevs, M. Mezitis (Latvia)
Automatic Measurement for Internal Resistance of
Battery in Uninterruptible Power Source
15.00 – 15.15 I. Steiks, L. Ribickis (Latvia)
Voltage Monitoring on Capacitor of Modular
Multilevel Converter
15.15 – 15.30
V. Cimanis, V. Hramcovs,
I. Rankis (Latvia)
Investigation of the Operation Speed of AC Voltage
15.30 – 15.45
M. Mikhov, T. Georgiev
A Sensorless Speed Control System for DC Motor
15.45 – 16.00
M. Gorobetz, I. Alps,
A. Levchenkov (Latvia)
Mathematical Formulation of Public Electric Transport
Scheduling Task for Artificial Immune Systems
16.00 – 16.15 A. Patlins, N.Kunicina (Latvia)
Development of Impact Aggregation Procedure for
Sustainable Transport System
16.15 – 16.30
I. Beinarts, A. Levchenkov
Control of Comfort Parameters in Interior of Railway
Coach Using ANN and RFID Tasks
16.30 – 17.30