Department of Measurement and Applied Electrical Engineering RESEARCH ACTIVITIES

Transcription

1 Department of Measurement and Applied Electrical Engineering RESEARCH ACTIVITIES

2 Department research : 1. Development of diagnostic and measuring systems of distribution transformers. 2. Diagnostics of electric machines and power equipments (especially power transformers, induction motors and power lines). 3. Thermovision diagnostics for power and telecommunication equipments. 4. Automotive diagnostics. 5. Application of intelligent systems (especially systems LONWORKS). 6. Research activities within the HF technique laboratory. 7. Research in collaboration with company EVPÚ a.s. Nová Dubnica. 2

3 1. Development of diagnostic and measuring systems of distribution transformers: Diagnostic system of transformers DST, developed at the University of Zilina, Department of Measurement and Applied Electrical Engineering (DMAEE), in co-operation with the company Lamda Control, Ltd.. Liptovský Hrádok, is designed for producers of transformers and organisations providing transformer repairs: STMEM Ltd. Přerov, , ZSE a.s. Bratislava, OTC Hlohovec, , JČE a.s. České Budějovice, , SSE a.s. Žilina, OT Rimavská Sobota, 2002, VSE a.s. Košice, SV Krompachy, 2004, ŽOS a.s. Vrútky, Tubas District Electricity, Co. LTD., TDECo, Palestine - Israel,

4 Block diagram of the communication connection of the DST system for Tubas District Electricity, Co. LTD., TDECo As the main control and evaluation unit an industry computer is used. Measurement software DST communicates via industrial communication interfaces with slave measurement instruments and I/O modules controlling power switching circuits. 4

5 2. Diagnostics of electric machines and power equipments : Projects: Diagnostics of electroenergetic equipments considering negative influences of electrical power network VEGA 1/3079/06 Defect influences analysis of the winding armature of 3-phase induction motors for supply network VEGA 1/3082/06 Analysis of the failure effect of electric machine commutation for computer and telecommunication network and their equipments VEG A 1/0198/08 Power transformer diagnostics considering short-circuit current and overcurrent effects VEGA 1/0548/09 Analysis and diagnostic measurements of the power transformers by SFRA method APVV

6 2.1 Research laboratory - diagnostics of the electric machines Function model of distribution transformer monitoring : probe HYDRAN M2 trend monitoring of gases, moisture and water in transformer oil, optical fibre system NEOPTIX T-GUARD - measurement of winding temperature, multimeter Lovato DMK 20 measurement of operating parameters. Block diagram of monitoring system 6

7 2.2 Diagnostics of the transformer design state Diagnostic measurement of the power transformers by SFRA method (Sweep Frequency Response Analysis): diagnostics of mechanical state of the transformer winding and core, application of SFRA method in Slovak control rooms, project APVV Research and Development Analysis and diagnostic measurements of the power transformers by SFRA method, Power transformer diagnostics considering short-circuit current and overcurrent effects VEGA 1/0548/09 7

8 2.3 Diagnostics of the transformer insulation properties Monitoring by means of probe HYDRAN M2 trend monitoring of gases, moisture and water in transformer oil, Dielectric spectroscopy measurement of dissipation factor, capacitance and permittivity depending of frequency. The frequency dependence of capacity as function of oil temperature The frequency dependence of capacity as function for moisture content of 0%, 0.05%, 0.15% and 0.25% in transformer oil (waveforms increase with moisture content) Measurement comparison of insulation resistance and dissipation factor 8

9 2.4 Important publications - conferences Prosr, P.,Brandt, M., Mentlík, V., Michalík, J.: Condition assessment of oil transformer insulating system. In: ICREPQ 10 = International conference on renewable energies and power quality : Granada, Spain, March, 2010 Mentlík, V., Prosr, P. ; Polanský, R. ; Michalík, J. ; Brandt, M.: Instruments for on-line monitoring of transformers. In: International Conference on Renewable Energies and Power Quality - ICREPQ'09 : Valencia (Spain) 15, 16, 17 of April 2009 Mentlík, V., Prosr, P. ; Polanský, R. ; Michalík, J. ; Brandt, M.: Property Changes of Transformer Oil during Limiting States of Transformer. In: 2008 IEEE CEIDP [elektronický zdroj] : IEEE Conference on Electrical Insulation and Dielectric Phenomena : October 26-29, 2008, Québec City, Canada. - [IEEE: Piscataway], Important publications - journals Prosr, P., Brandt, M., Mentlík, V., Michalík, J.: Condition assessment of oil-paper transformer insulating system, In: Journal of energy and power engineering. ISSN Vol. 5, No. 2, Serial No. 39, 2011, p Gutten, M., Jurčik, J., Brandt, M., Polansky, R.: Mechanical effects of short-circuit currents analysis on autotransformer windings, In: PRZEGLĄD ELEKTROTECHNICZNY, Vol. 87, 2011, ISSN , No. 7, p Kudelčik, J., Gutten, M., Virdzek, M.: Measurement of electrical parameters of breakdown in transformer oil, In: PRZEGLĄD ELEKTROTECHNICZNY, Vol. 87, 2011, ISSN , No. 8, p Gutten, M., Trunkvalter, M.: Thermal effects of short-circuit current on winding in transformer oil, In: PRZEGLĄD ELEKTROTECHNICZNY, Vol. 86, 2010, ISSN , No. 3, p Gutten, M., Trunkvalter, M.: The monitoring of oil transformer by gas and moisture sensor, In: PRZEGLĄD ELEKTROTECHNICZNY, Vol. 86, 2010, ISSN , No. 12, p Gutten, M., Kučera, S., Kučera, M., Šebök, M.: Analysis of power transformers reliability with regard to the influences of short-circuit currents effects and overcurrents, In: PRZEGLĄD ELEKTROTECHNICZNY, Vol. 85, 2009, ISSN , No. 7, p

10 3. Thermovision diagnostics Projects: Diagnostics of electroenergetic equipments considering negative influences of electrical power network VEGA 1/3079/06 Thermodiagnostics of antenna systems of the broadcast transmitters VEGA 1/0007/09 10

11 3.1 Thermovision diagnostics of power equipments connections, power lines and branch bars, electric instruments, rotating electric machines, power transformers Diagnostics induction reactor of heat station in Žilina Thermogram of electric instruments H 2 2 ( ) dh(, T )/ d d e e measured 2calculated Thermal analysis of distribution transformers Calculated and measured values for BR1 11

12 3.2 Thermovision diagnostics of telecommunication equipments Measurement of antenna systems of the broadcast transmitters in Rimavska Sobota 12

13 3.3 Important publications - journals Šimko, M., Chupáč, M.: Non-destructive method of measurement of radio transmitters antenna systems. Electronics and electrical engineering Elektronika ir elektrotechnika, Nr.1 (107), Kaunas, 2011 Šimko, M., Chupáč, M.: Method of measurement of radio transmitters and antenna systems In: Przegląd elektrotechniczny, Warszawa, Nr. 12, 2010 Šimko, M., Chupáč,M.: The teoretical synthesis and desing of symmetrical delay line with surface acoustic wave for oscillators with single-mode regime of oscillation. Electrical Engineering USA - podaný 2011 Šebök, M., Gutten, M., Kučera, M.: Diagnostics of electric equipments by means of thermovision, In: PRZEGLĄD ELEKTROTECHNICZNY, Vol. 87, 2011, ISSN , No. 10, p

14 4. Automotive diagnostics Experimental activities: diagnostics of Lambda probe, diagnostics of automotive ignition system, diagnostics of alternator, diagnostics of automotive electronics, diagnostics of speed sensors, diagnostics of ignition coils, diagnostics of control systems, diagnostics advance and speed and their influence in the petrol consumption. Construction of automotive diagnostics and electronics laboratories Column graph of secondary voltage Dependence of steering angle and cylinder pressure 14

15 5. Application of intelligent systems Research activities : methods of designing automatic control systems, analysis of application of LONWORKS technology in intelligent buildings, design of optimum parameters of discrete regulators, experimental verification of the designed control system in intelligent building. Time behaviour of indicial response of continuous URO Block diagram of Internal Model Control 15

16 6. Research activities within the HF technique laboratory - design of metamaterial frequency selective elements - design of passive microtape elements for microwave frequency field

17 - parameter options of microtape and horn antennas by means of metamaterial structure FAKTOROVÁ, D., OMELKA, P., ISTENÍKOVÁ, K.: Antenna parameters enhancement by using artificial magnetic structure. In: Journal of Electrical Engineering, Bratislava, Vol. 61, 2010, No. 7/s, ISSN , p

18 - non-destructive material test by HF methods - dielectric materials - conducting materials FAKTOROVÁ, D.: A new approach to the determination of solid materials complex permittivity. In: Computer Field Models of Electromagnetic Devices, Studies in Applied Electromagnetics and Mechanics, 2010, Vol 34, ISSN , Amsterdam: IOS Press, p defect Project cooperation with Faculty of Mechanical Engineering - ŽU - non-destructive control of metal microdefects APVV bilateral project

19 - interaction of electromagnetic field with biological systems - dielectric properties of biological materials - microwave hyperthermie applicators with MMS Design of applicators with MMS - new sensors with MMS dielectric properties of tumour tissue Application of high-loss dielectrics MMS sensor CA - pancreas sample cooperation with LMU Munich

20 Important publications FAKTOROVÁ, D., ISTENÍKOVÁ, K.: Modelling of Scatering Parameters in Biological Tissues. In: Przeglad Elektrotechniczny, Vol. 87, No.5, 2011 FAKTOROVÁ, D.: Shorted waveguide method for biological tissues dielectric properties investigation, In: World congress on medical physics and biomedical engineering, , Mníchov, Germany FAKTOROVÁ, D.: Malignant tissue phantom dielectric properties investigation at microwave frequencies. In: ISABEL 2010: 3rd International Symposium on Applied Sciences in Biomedical and Communication Technologies, IEEE, , Rím, Taliansko FAKTOROVÁ, D.: Couplet numerical - experimental method for frequency and temperature dependences of biological materials dielectric properties investigation at microwave frequencies. In: ISABEL 09 2nd International symposium on applied sciences in biomedical and communication technologies, , Bratislava ČAMAJ, P., SEELIGER, H., ISCHENKO, I., KREBS, S., BLUM, H., DE TONI, E., FAKTOROVÁ, D., JAUCH, K.W., BRUNS, CH.: EFEMP1 binds the EGF receptor and activates MAPK and Akt pathways in pancreatic carcinoma cells, In. Biological Chemistry, Vol. 390, 2009, ISSN , No

21 7. Research in collaboration with company EVPÚ a.s. Nová Dubnica development of cooler module for HV IGBT transistors 21

22 THANK YOU FOR YOUR ATTENTION Department of Measurement and Applied Electrical Engineering University of Žilina Univerzitná Žilina Slovak republic Phone: www: kmae@fel.uniza.sk