Laboratory experience in power engineering at the University of Queensland

Transcription

1 Laboratory experience in power engineering at the University of Queensland Professor Tapan Saha Contributors: all academic and technical colleagues from the research group. Power & Energy Systems Research Group School of Information Technology and Electrical Engineering The University of Queensland (UQ), Brisbane, Australia

2 Introduction UQ has Bachelor & Masters level course work Electrical Engineering programs with a strong focus in power. UQ has strong MPhil & PhD programs in electrical power engineering Internet based machines laboratory (in MIT s ilab platform) Software based power systems laboratory Experimental facilities in condition monitoring and asset management PV sites and solar integration laboratory 2

3 3 Remotely Controlled Machines Lab experiments-ilab DC and AC Machine experiments for the undergraduate Electrical engineering students Synchronous Machine experiments Experiments have been designed in ilabs environment, which allows students to remotely control the machines from anywhere with an internet connection. Automate Machine experiments and made available online for 24/7 operation.

4 4 Example:ELEC3300: INDUCTION MACHINES This window is the home page for the experiment. Running an experiment will consists of executing measurements on one of the three parts. a. Blocked Rotor Test b. No Load Test c. Load Test

5 5 Experimental procedure In the setup stage, select which particular machine experiment wish to perform, and set the parameters for the test. Submit the experiment and check the status page, which will show the time remaining of experiment if it starts immediately, or information about the queue size. Once the measurements completed, the results can be retrieved from your ilab account by clicking on Results in the menu choice on the LabClient home page. Retrieve the file and then save your results in Excel.csv file.

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7 7 Power System Simulation Laboratory (PSS-L) Provide information related to power system analytical software tools Provide information about test power systems available for various power system analytical studies. Set up a PSS-L with appropriate computing resources (hardware), analytical software tools, test systems and other pertinent information. Develop five simulation experiments in load flow, fault analysis, transient stability, small signal stability and voltage stability. Develop a comprehensive homepage to host the information related to PSS-L that would be useful both for UQ and other participating universities.

8 8 Sample Transmission Systems Three bus test system, Simple 5 bus interconnected system, WECC 9-bus test system IEEE-14 Bus test system Two-area Test System IEEE-30 bus, IEEE-39 Bus & IEEE-57, IEEE 118, IEEE 300 Bus test system 16 Machine 68 bus test system IEEE 14 generator 59 bus test system IEEE-50 machine test system WECC 179 bus test system IEEE 17 machine 162 bus test system +++ More Sample Distribution Systems Features 16 BUS 30 BUS 33 BUS 94 BUS No. of Feeders Nominal Voltage 23 kv 11kV 12.66kV 11.4k V No. of sectionaliz ing branches No. of Tie switches

9 9 PSS-L Laboratory Load Flow Analysis Fault Analysis in IEEE-14 Bus Test System Transient Stability Analysis of Single Machine Infinite Bus System Small signal Stability Analysis of Two -area Test System Static Voltage Stability Analysis of WSCC -9 Bus Test System

10 10 Integrated condition monitoring laboratory (Transformer technology design & operation; Asset management and condition monitoring) 1. Frequency Domain Spectroscopy (FDS) measurements (IDAX 300 Insulation Diagnostic Analysers) for transformer 2. Polarisation Depolarisation Current (PDC) measurements (UQ developed equipment) for transformer 3. Frequency Response analysis (FRA) measurements (Megger FRAx150 Frequency Response Analyser) for transformer 4. Partial discharge (PD) measurements (MPD 600 acquisition unit, MCU 502 control unit, and other accessories) 5. Acoustic PD measurement (UQ developed) 6. Thermal imager measurement on transformer insulation (Fluke TI 32 thermal imager with infrared lens)

11 Frequency Domain Spectroscopy (FDS) measurements for transformer moisture and ageing analysis 11

12 PDC Measurement for transformer (UQ Developed equipment) 12

13 Partial discharge (PD) measurements 13

14 PD Measurements 14

15 15 FRA measurements-for winding mechanical displacements and winding deformation Different FRA configurations on a winding model 20 Hz to 2 MHz V sending V receiving TF response Vr Vs

16 Use of Impulse generation- electrical properties of a surge arrestor 16 Experimental setup for testing electrical properties of a surge arrestor as prescribed by AS Experimental setup for testing BIL and flashover voltage of different type of insulators as prescribed by AS

17 17 Photovoltaic (PV) training system for second year students Characteristic curve of a solar module on irradiation and temperature Power output of a solar module depending on the angle of incidence of the light Power output of a solar module depending on the position of the sun (daily & seasonal) Series and parallel connection of solar modules Stand alone systems DC and AC. Solar charging controller, battery, stand-alone inverter, DC and AC loads.

18 UQ Solar Facility 18 UQ's 1.22 megawatt photovoltaic solar array generates electricity for the St Lucia campus in Brisbane and underpins research projects in diverse areas including physics, economics and sustainability.

19 UQ 1.22MWp PV System 19

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21 UQ-Gatton Campus 3.3 MW PV station The 3.3 MW Solar Research Facility comprises more than 37,000 thin-film photovoltaic panels, mounted on 10ha land.

22 3.275MW system comprises of 5 arrays:- a dual tracking array, a single axis tracking array and 3 fixed tilt panel

23 PV panels mounted on a single axis that tilts from east to west throughout the day to maximise energy output.

24 Dual Axis Tracking Array These trackers are capable of a 340 o slewing motion and 180 o tilt that allow the panels to directly face the sun at all times and thus, maximize output power. Multiple PV mounting technologies including fixed-tilt, single-axis and dual-axis tracker technologies are in operation side-by-side in the same field to investigate performance.

25 25 Renewable Energy Research Laboratory Intended for renewable energy gird integration research particularly PV/ Energy Storage Reaching the real problems - access to actual plant/network data from a number of solar PV installations across UQ campuses in QLD, Australia Mainly used for postgraduate research along with BE/ME thesis student access Also, a test-bed for exploring new ideas to support collaboration with national/international partners

26 26 Renewable Energy Research Laboratory A Typical Setup for Hardware-in-Loop simulation Grid Simulator PV Simulator Inverter Data from PV Site Real Time Digital Simulator (RTDS) Battery Inverter Charge/Discharge Controller Battery

27 27 Solar research Laboratory 4x HIL Amplifier 3x Inverter HIL test 2x Solar Array Simulator UQ Gatton campus RT-Network-Target Ethernet Battery Simulation and Testing 2 racks, 4 CPU cards per rack. RTDS Cluster simulation VPN Gateway Gbit/s 24x 3.1 GHz 2x Displays Internet Embedded Devices Virtualization server mosaik-simulation development tools license servers

28 28 Students perception Hands on experience is most valuable Flexibility in usage is an advantage Repeatability of experiments is an advantage Outage of experiments during after hours can be an issue for online experiments Mix of remotely and in-lab experiments is a good compromise Tutor assistance is very helpful in understanding

29 29 Conclusions We have developed a number of new experiments in a wide variety of courses. Students are finding them extremely useful Comprehensive application of computer controlled and hardware based experiments Modern software tools are being utilised. Thanks to my colleagues: Dr Mithulan Nadarajah, Dr Chandima Ekanayake, Dr Hui Ma, Mr. Shane Goodwin, Mr. Adrian Clarke, Mr. Steve Wright, Mr. Keith Lane, Mr Muhammad Shameem and a number of RHD students.

30 30 Thank you! Professor Tapan Saha School of Information Technology & Electrical Engineering, The University of Queensland, St. Lucia, Qld-4072, Australia Tel: , Fax: saha@itee.uq.edu.au,