Lightning Performance of Medium Voltage Overhead Lines

X SIPDA - International Symposium on Lightning Protection, Curitiba, PR, Brazil, 2009.




Abstract:

The medium voltage systems performance front lightning discharges is very dependent on its modelling, as the model approaches the reality, more it becomes extremely complex and time expensive, as a result, it generally leads to the adoption of some sort of simplifications and approximations.
The present work aims at the study of a large variety of effects of the lightning discharges, its impacts and preponderant factors for analysis in different real systems, as far as searching for a balance between the models approximation and the resultant errors.
With this in mind, it uses models that are more precise, stochastic process simulations, electromagnetic transients simulations, real information from the networks and statistical analyses.
Therefore, it is possible to establish the main intervention points for the improvement of the medium voltage overhead distribution systems performance front lightning discharges.

Introduction:

The objective of this paper is to study the large variety of effects of the lightning discharges, its impacts and preponderant factors for analysis into different real distribution systems.
Thus, establish the main intervention points for the performance improvement by the impact response of the equipment installed in the network, as an example: transformers, insulators, and surge arresters.
For this purpose, an entire analysis methodology and simulation have to be developed, generating a valid procedure to infer the behaviour of the system and of the installed equipment in the occurrence of a lightning surge.
The development of this methodology involves since the elaboration of a computational program for the treatment, exhibition and use of the geographic information databases of the system, as well as simulation, stochastic analysis, probability and statistics of the occurrence of surges caused by lightning.
In addition, an interface module was developed to do electromagnetic transient simulations, where all the dynamics of the distribution and dissipation of the surge will be detailed and analyzed, as well as the impact into the equipment and elements of the system.

References:

[1] Marco A. M. Saran, “Lightning Overvoltage’s in Medium Voltage Lines”, Master Thesis, Federal University of Itajubá, Brazil, Feb. 2009;
[2] Manuel L. B. Martinez, Pedro H. M. dos Santos, “Study of the Induced Voltages in Distribution Networks, Guide for the Performance Improvement of the Overhead Distribution under Lightning Discharges”, High Voltage Lab., Federal University of Itajubá, Brazil, March, 2004;
[3] Carlo A. Nucci, Mario Paolone, “Calculation of Induced Voltages in Medium Voltage Overhead Systems due to Lightning Strokes Using the LIOV Code”, Report for the Second Phase of the R&D Project for the AES Sul Utility, October, 2003;
[4] Marco A. M. Saran, Rafael R. Bonon, Manuel L. B. Martinez, Hermes R. P. M. De Oliveira, Carlo A. Nucci, Mario Paolone, “Performance of Medium Voltage Overhead Distribution Lines Against Lightning-Induced Voltages: A Comparative Analysis”, GROUND’06 e 2nd LPE - International Conference on Grounding and Earthing & 2nd International Conference on Lightning Physics and Effects, Maceió, Brazil, November, 2006;
[5] Marco A. M. Saran, Manuel L. B. Martinez, Hermes R. P. M. De Oliveira, “Performance of Medium Voltage Urban And Rural Distribution Lines Front Lightning Discharges And Induced Surges”, GROUND’06 e 2nd LPE - International Conference on Grounding and Earthing & 2nd International Conference on Lightning Physics and Effects, Maceió, Brazil, November, 2006;
[6] Marco A. M. Saran, Rafael R. Bonon, Manuel L. B. Martinez, Hermes R. P. M. De Oliveira, Carlo A. Nucci, Mario Paolone, “Performance of Medium Voltage Overhead Distribution Lines Against Lightning Discharges”, International CIGRÉ Symposium – TPLEPS – Transient Phenomena In Large Electric Power Systems, Zagreb, Croatia, April, 2007;
[7] Marco A. M. Saran, Manuel L. B. Martinez, Hermes R. P. M. de Oliveira, “Performance of Medium Voltage Urban and Rural Distribution Lines Front Lightning Discharges and Induced Surges”, 15th International Symposium on High Voltage Engineering, Ljubljana, Slovenia, August, 2007;
[8] Marco A. M. Saran, Manuel L. B. Martinez, Carlo A. Nucci, Mario Paolone, Hermes R. P. M. de Oliveira, “Performance Analysis of Medium Voltage Overhead Distribution Line Against Lightning”, 19th CIRED, International Conference on Electricity Distribution, Vienna, Austria, May, 2007;
[9] Marco A. M. Saran, Manuel L. B. Martinez, Carlo A. Nucci, Mario Paolone, Hermes R. P. M. de Oliveira, “Comparative Performance of Medium Voltage Overhead Distribution Lines Designs Submitted to Induced Voltages”, Power Tech, Lausanne, Switzerland, July, 2007;
[10] IEEE Guide for Improving the Lightning Performance of Electric Power Overhead Distribution Lines, IEEE Std 1410-2004, T&D Committee, IEEE Power Engineering Society;
[11] John G. Anderson, Thomas A. Short, “Algorithms for Calculation of Lightning Induced Voltages on Distribution Lines”, IEEE Transactions on Power Delivery, Volume 8, Number 3, Pages 1217-1225, July, 1993;
[12] Parameters of Lightning Strokes: A Review, Lightning and Insulator Subcommittee of T&D Committee, IEEE Transactions on Power Delivery, Vol. 20, No. 1, January, 2005;
[13] Pedro H. M. dos Santos, “Performance Analysis of Medium Voltage Circuits Front Induced Lightning Impulses”, Master Thesis, Federal University of Itajubá, Brazil, March, 2007;
[14] Ricardo G. de Oliveira Jr., “Induced Voltages in Medium Voltage Lines”, Master Thesis, Federal University of Itajubá, Brazil, August, 2008;
[15] Andrew R. Hileman, “Insulation Coordination for Power Systems”, Marcel Dekker Inc., 1999;
[16] G. Vernon Cooray, “The Lightning Flash”, IEE Power Series, Volume 34, 2003;
[17] Lou van der Sluis, “Transients in Power Systems”, John Wiley & Sons, 2001;
[18] Mustafa Kizilcay, “Power System Transients and Their Computation”, Osnabrück University of Applied Sciences, Germany, 2000;
[19] Protection of MV and LV Networks against Lightning, Joint CIGRÉ-CIRED Working Group C4.4.02, 2005.


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