“measurement of power quality” - national...
TRANSCRIPT
“Measurement of Power Quality”
Dr Francesco Crusca,
F C Power Solutions
Summary
1. Renewable Energy – background information 1a. Concept of Embedded Generation (EG) 1b. Paradigm shifts in energy transmission 1c. Rules for the connection of EG
2. Measurement of Power Quality
2a. Australian and international standards 2b. Measurements required for compliance with standards
3. Conclusions
2 2012 NI Technical Symposium- Melbourne,
’’Measurement of Power Quality’’, © F C Power Solutions 2012
1. Renewable Energy – background information
1a. Concept of Embedded Generation (EG)
1b. Paradigm shifts in energy transmission
1c. Rules for the connection of EG
3 2012 NI Technical Symposium- Melbourne,
’’Measurement of Power Quality’’, © F C Power Solutions 2012
1a. Concept of Embedded Generation
4 2012 NI Technical Symposium- Melbourne,
’’Measurement of Power Quality’’, © F C Power Solutions 2012
Source: 0410-0082.pdf AEMO
1a. Concept of Embedded Generation
5 2012 NI Technical Symposium- Melbourne,
’’Measurement of Power Quality’’, © F C Power Solutions 2012
1. Renewable Energy – background information
1a. Concept of Embedded Generation (EG)
1b. Paradigm shifts in energy transmission
1c. Rules for the connection of EG
6 2012 NI Technical Symposium- Melbourne,
’’Measurement of Power Quality’’, © F C Power Solutions 2012
1b. Paradigm shifts in energy transmission
• Traditional approach is to have remote generation centres connected via high voltage AC transmission lines to load centres.
• With EG the power is generated in some cases close to where it is consumed. This saves on transmission infrastructure and reduces power losses on lines.
7 2012 NI Technical Symposium- Melbourne,
’’Measurement of Power Quality’’, © F C Power Solutions 2012
1. Renewable Energy – background information
1a. Concept of Embedded Generation (EG)
1b. Paradigm shifts in energy transmission
1c. Rules for the connection of EG
8 2012 NI Technical Symposium- Melbourne,
’’Measurement of Power Quality’’, © F C Power Solutions 2012
1c. Rules for the connection of EG
• NER: National Electricity Rules
• Topics covered in NER: – Steady-state voltages and line loadings
– Dynamic stability
– Power quality (S5.2.5.2) harmonics, flicker, unbalance
– Fault current levels
– And much more…
9
2012 NI Technical Symposium- Melbourne, ’’Measurement of Power Quality’’, © F C
Power Solutions 2012
2. Measurement of Power Quality
2a. Australian and international standards
2b. Measurements required for compliance with standards
10 2012 NI Technical Symposium- Melbourne,
’’Measurement of Power Quality’’, © F C Power Solutions 2012
2. Measurement of Power Quality
2a. Australian and international standards
2b. Measurements required for compliance with standards
11 2012 NI Technical Symposium- Melbourne,
’’Measurement of Power Quality’’, © F C Power Solutions 2012
2a. Australian and international standards
• AS/NSZ 61000.3.6:2001 (harmonics) • AS/NSZ 61000.3.7:2001 (flicker) • Victorian Electricity Distribution Code (2010) • IEEE Std 519-1992 (harmonics) • ENA G5/4-1 (harmonics) • IEC 61000-4-7 Wind Farms • AS/NZS 61000.4.30:2007 (PQ test & Meast) • IEC61000-4-7 (PQ test & Meast) • AS/NZS 61000.4.15:2005 (Flickermeter spec)
12 2012 NI Technical Symposium- Melbourne,
’’Measurement of Power Quality’’, © F C Power Solutions 2012
2. Measurement of Power Quality
2a. Australian and international standards
2b. Measurements required for compliance with standards
13 2012 NI Technical Symposium- Melbourne,
’’Measurement of Power Quality’’, © F C Power Solutions 2012
2b. Measurements required for compliance with standards
• Harmonics: – Measure integer harmonics 2nd-50th
– Measure non-integer harmonics up to 9 kHz
• Flicker – measure using flickermeter
• Unbalance – measure sequence components
14 2012 NI Technical Symposium- Melbourne,
’’Measurement of Power Quality’’, © F C Power Solutions 2012
2b. Measurements required for compliance with standards
• Example of harmonic impedance at POC
15 2012 NI Technical Symposium- Melbourne,
’’Measurement of Power Quality’’, © F C Power Solutions 2012
3. Conclusions
• Expected growth in measurement in the power industry
• Novel approaches are required
• Thanks for your attention!
16 2012 NI Technical Symposium- Melbourne,
’’Measurement of Power Quality’’, © F C Power Solutions 2012