Number of lightning discharges causing damage to lightning arrester cables for aerial transmission lines in power systems

Journal Article · Wed Jul 15 04:00:00 EDT 2009 · Power Technology and Engineering (Print)

DOI:https://doi.org/10.1007/S10749-010-0107-2· OSTI ID:21570915

Nikiforov, E P ^[1]

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1. Electric Power Scientific Research Institute (VNIIE), branch of OAO 'NTTs Elektroenergetika' (Russian Federation)

Damage by lightning discharges to lightning arrester cables for 110-175 kV aerial transmission lines is analyzed using data from power systems on incidents with aerial transmission lines over a ten year operating period (1997-2006). It is found that failures of lightning arrester cables occur when a tensile force acts on a cable heated to the melting point by a lightning current. The lightning currents required to heat a cable to this extent are greater for larger cable cross sections. The probability that a lightning discharge will develop decreases as the amplitude of the lightning current increases, which greatly reduces the number of lightning discharges which damage TK-70 cables compared to TK-50 cables. In order to increase the reliability of lightning arrester cables for 110 kV aerial transmission lines, TK-70 cables should be used in place of TK-50 cables. The number of lightning discharges per year which damage lightning arrester cables is lowered when the density of aerial transmission lines is reduced within the territory of electrical power systems. An approximate relationship between these two parameters is obtained.

• OSTI ID: 21570915
• Journal Information: Power Technology and Engineering (Print), Journal Name: Power Technology and Engineering (Print) Journal Issue: 4 Vol. 43; ISSN 1570-145X
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
CABLES
CURRENTS
DAMAGE
ELECTRIC DISCHARGES
ELECTRICAL EQUIPMENT
ENERGY SYSTEMS
EQUIPMENT
FAILURES
LIGHTNING
LIGHTNING ARRESTERS
MELTING POINTS
PHYSICAL PROPERTIES
POWER SYSTEMS
POWER TRANSMISSION LINES
RELIABILITY
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE