Analysis of Coordination between Surge Protection Devices in Low Voltage Electric Networks
محورهای موضوعی : Electrical Engineering
Mehdi Mahmoudzadeh
1
(Department of Electrical Engineering, Semnan University, Semnan, Iran )
Mohsen ‎ Niasati
2
(Department of Electrical Engineering, Semnan University, Semnan, Iran )
کلید واژه: Transient over voltages, Low voltage surge protection, Surge protection coordination,
چکیده مقاله :
Low voltage Surge Protection devices (SPDs) are one of the most important electrical equipments to protect the electric networks against transient destructive electrical waves. Using only one SPD, in general, is not enough due to either large distances between SPDs and electric loads or high sensitivity of the electric networks’ apparatuses. In practice, to make conditions better, several SPDs are used simultaneously and in due order. In this case, right technical selection of each of the SPDs and the electrical distance between each pair play an important role to achieve an effective protection system to keep the electrical equipments safe; this is specifically important since having not taken into account the SPDs specifications and the distance between each pair would lead into destructions of electric equipments and even SPDs themselves. In this paper, though modeling and simulation of a complete low voltage network, coordination's between a two-stage protection systems will be analyzed; modeling and studies have been implemented in EMTP-RV software package and results extracted and investigated. The outcomes of this study have pointed out that when SPDs are selected technically rightfully, an increase in the cable between two SPDs would increase the absorbed energy and current discharge in the upstream SPD and decrease the voltage of the SPD near to the load.
[1] IEC62305-32006, Protection again lightning: Part 3: physical damages and life hazard.
[2] A. Mohammadi, "Reference of Lightening Protection Systems", 2015, Nas publication.
[3] Q. Zhou, et al.,” Experimental investigation of the coordination between SPDs and between SPD and the protected equipment,” Electrical Power Syst. Res., 2015.
[4] A. Rousseau & T. Perche, “Coordination of Surge Arresters in the Low Voltage Field,” Soule - B.P. 308 - 65203 Bagneres DE Bigorre - France 1995.
[5] Qi Bin Zhou, Alain Rousseua, Yang Zhao” Further coordination test between SPDsand between SPD and equipment” ICLP2014, vol. 152, Oct., Shanghai 2014.
[6] Hee-Kyung Shin, Dong-Seong Kim” Energy coordination of ZnO varistor based SPDs in surge current due to direct lightning flashes” International Conference on Lightning Protection (ICLP) 2014.
[7] J. L. He, Z. Y. Yuan, S. C. Wang, J. Hu, S. M. Chen, and R. Zeng "Effective Protection Distances of Low-Voltage SPD with Different Voltage Protection Levels," IEEE Trans. Power Delivery, vol.25, no 1. pp. 187-195, Jan. 2010.
[8] J. He, Z. Yuan, J. Xu, S. Chen, J. Zou, and R. Zeng, “Evaluation of the effective protection distance of low-voltage SPD to equipment,” IEEE Trans. Power Del., vol. 20, no. 1, pp. 123–130, Jan. 2005.
[9] Pinceti, P., Giannettoni, M. "A simplified model for zinc oxide surge arresters", IEEE Transactions on Power Delivery, Vol. 14, No. 2; April 1999.
[10] IEEE Recommended Practice on Surge Voltages in Low-Voltage ac Power Circuits, ANSI/IEEE Std.C62.41-1991.
