Effect of PQ-monitor Connection on Voltage Dip Indices: PN vs PP Voltages

• Autorzy: Leborgne R. C. , Olgiun G. , Carvalho Filho J. M. , Bollen M. H. J.
• Języki publikacji: EN

Abstrakty

EN

This work addresses the influence of the PQ-monitor connection on the estimation of voltage dip site and system indices. Voltage dip indices are estimated for a set of events obtained from simulation and measurement of voltage dips. The simulated dips are obtained applying the method of fault positions on a large transmission network and the measured dips come from a one-year survey performed on three buses of a sub-transmission and distribution network. The site and system indices estimated to compare phase-to-phase and phase-to-neutral dips are SARFI-90,SARFI-70,SARFI-ITIC,expectedvoltagedipamplitude(µ[VDA]),andthecumulative distribution frequency of voltage dip amplitude. These indices are estimated at the bus level and then aggregated to estimate the system performance. The comparison of phase-to-phase and phase-to-neutral indices indicates that, at high voltage level, phase-to-neutral dips are more frequent and more severe than phase-to-phase ones. However, these differences are damped at low voltage level, where the monitored bus presented similar indices for phase and line voltages. These observations must be taken in consideration to compare voltage dip benchmark because the lack of information about the type of the measured voltages may lead to derive inaccurate conclusions about the site and system performance regarding voltage dips.

Słowa kluczowe

EN

indices; measurements; method of fault positions; power quality; voltage dips (sags)

• Wydawca: AGH University of Science and Technology
• Czasopismo: Electrical Power Quality and Utilisation. Magazine
• Rocznik: 2006
• Tom: Vol. 2, iss. 1
• Strony: 19--28
• Opis fizyczny: Bibliogr. 15 poz., rys., tab.

Twórcy

autor

Leborgne R. C.

• Chalmers University of Technology, Sweden

autor

Olgiun G.

• ABB Corporate Research, Sweden

autor

Carvalho Filho J. M.

• Itajuba Federal University, Brazil; 4 STRI, Sweden

autor

Bollen M. H. J.

Bibliografia

• 1.B o l l e n M . H . J . : Understanding Power Quality Problems – Voltage Dips and Interruptions. New York: IEEE Press, 1999.
• 2.IEEE Recommended Practice for Monitoring Electric Power Quality, IEEE Std. 1159–1995.
• 3.IEEE Voltage Dips Indices, IEEE Working Group P1564, August 2003.
• 4.IEC 61000-2-8, Electromagnetic compatibility— Environment—Voltage dips and short interruptions on public electric power supply systems with statistical measurement results, 2000.
• 5. IEC 61000-4-30, Electromagnetic compatibility— Environment—Testing and Measurement Techniques— Power Quality Measurement Methods, 2001.
• 6. M c G r a n a g h a n , M . , R o e t t g e r , B .: Economic evaluation of power quality. IEEE Power Engineering Review, Vol.22, No.2, Feb. 2002.
• 7. O l g u i n , G .: Voltage dip (dip) estimation in power system based on stochastic assessment and optimal monitoring. PhD Thesis 2276, Division of Electric Power Engineering, Chalmers University of Technology, Gothenburg, 2005.
• 8. C o n r a d L . , L i t t l e K . , G r i g g C . :Predicting and preventing problems associated with remote fault-clearing voltage dips. IEEE Transactions on Industry Applications, Vol.27, No.1, 1991.
• 9. Q a d e r M . R . , B o l l e n M . H . J . , A l l a n R . N .: Stochastic prediction of voltage dips in large transmission system. IEEE Transactions in Industry Applications, Vol.35, No.1, 1999.
• 10. B o l l e n M . H . J . , G o o s s e n s P. , R o b e r t A . :Assessment of voltage dips in HV-Networks: deduc- tion of complex voltages from measured RMS vol- tages. IEEE Transactions on Power Delivery, Vol.19, No.2, April 2004.
• 11. D i d d e n M . , D e J a e g e r E . , D ’ h a e s e - l e e r W. , B e l m a n s : How to connect a voltage dip-measuring device: phase to phase or phase to neutral? IEEE Transactions on Power Delivery, Vol.20, No.2, April 2005.
• 12. CIGRE C4.07, Power Quality Indices and Objec- Times - Final Report, February 2004
• 13. D i P e r n a C . , O l g u i n G . , Ve r d e P . B o l l e n M . H . J .: On probabilistic system indi- ces for voltage dips. Probabilistic Methods Applied to Power System Conference. IOWA, USA, Sep- tember 2004.
• 14. C a r v a l h o F i l h o J . M . , d e A b r e u J . P. G . ; A r a n g o H . , C a m i n h a N o r o n - h a J . C .: Analysis of power system performance under voltage dips. Electric Power Systems Rese- arch, Vol.55, No.3, Sept. 2000.
• 15. L e b o r g n e R . C . : Voltage dip characterisation and estimation. Licentiate Thesis, Division of Elec- tric Power Engineering, Chalmers University of Technology, Gothenburg, 2005.