Abstract
The algorithms for short circuit (SC) currents as well as induced in grounded in each tower lighting wire (LW) currents are presented for the case of SC to overhead transmission line (OTL) tower and to the ground passing the tower.
Highlights
Overhead transmission lines (OTL) are equipeed by lighting wires ontaining fiber optical communication channels (FOLW)
There are determined the currents induced in FOLW for simultanious C1 and C2 phases short circuit (SC) to the ground at 5 km distanse from substation 2 unlikely case
In [2] there was discussed the case of 220 kV OTL C2 phase SC to the ground at 5 km distance from substation 2, and FOLW-...-18.7/93
Summary
Overhead transmission lines (OTL) are equipeed by lighting wires ontaining fiber optical communication channels (FOLW). There are determined the currents induced in FOLW for simultanious C1 and C2 phases SC to the ground at 5 km distanse from substation 2 unlikely case. This case for FOLW -...-18.7/93 IWmax = IW6 = 6.296 kA. In [2] there was discussed the case of 220 kV OTL C2 phase (connected to substation 1 and substation 2 and operation without power transmission) SC to the ground at 5 km distance from substation 2, and FOLW-...-18.7/93. Under case of simultaneous calculation method current greatest value in LW is accounts for first span from substation 2. IW1 Greatest current values for: FOLW-...-18.7/93 under SC span No.=12, ILW1=7.42 kA; FOLW-...-14.7/61 under SC span No.=11, ILW1=6.86 kA; FOLW-...-13.1/54 under SC span No.=10, ILW1=6.42 kA; FOLW-...-12.0/94 under SC span No.=8, ILW1= 4.64
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