Selection of Surge Protective Devices for Low-Voltage Systems Connected to Overhead Line

• Published in: IEEE transactions on power delivery 2010-07, Vol.25 (3), p.1530-1537
• Main Authors: Milardić, Viktor, Uglesic, Ivo, Pavić, Ivica
• Format: Article
• Language: English
• Subjects: Applied sciences; Arcs, sparks, lightning; Circuit testing; Computer simulation; Connection and protection apparatus; Devices; Electric discharges; Electrical engineering. Electrical power engineering; Electrical power engineering; Electromagnetic modeling; EMTP; Entrances; Exact sciences and technology; IEC standards; Lightning; Lightning effects; Lightning protection; Mathematical models; Miscellaneous; Overhead low-voltage distribution line; Overhead networks; Physics; Physics of gases, plasmas and electric discharges; Physics of plasmas and electric discharges; Power networks and lines; probability of energy overloading; procedure; protected building; Protective; Sparks; Surge protection; surge protective device (SPD) classes; Surge Protective Devices - c62; Surges; Varistors; Voltage
• ISSN: 0885-8977; 1937-4208
• DOI: 10.1109/TPWRD.2010.2047410

This paper presents a procedure of choosing an appropriate surge protective device for low-voltage systems connected to an overhead line. For a typical surge protection application, an appropriate Electromagnetic Transients Program model is devised. The energy overload is calculated for a surge protective device following a simulation of the lightning effect. This way, it is possible to determine the required class for the surge protective device in question. The procedure has been tested on some typical overhead low-voltage networks. The results of these calculations, as well as very good service experiences, demonstrate that the use of Class II surge protective devices seems to be appropriate for service entrances in buildings that have no lightning protection systems.