Experimental study of response of power distribution lines to direct lightning hits

Journal Article · Sun Oct 01 04:00:00 EDT 1989 · IEEE Transactions on Power Delivery; (USA)

DOI:https://doi.org/10.1109/61.35653· OSTI ID:5434583

Yokoyama, S; Asakawa, A ^[1]

---

1. Central Research Inst. of Electric Power Industry, Tokyo (Japan)

In order to clarify the response of overhead distribution lines to direct lightning hits, experimental facilities were installed at the UHV Shiobara Testing Laboratory of CRIEPI. The characteristics of lightning impulse currents and the response manners of protection measures are as follows: (a) Lightning impulse current with crest value of 18 {Kappa} amperes and waveform of (2/11) {mu}sec was generated through the impulse current generator with a high internal resistance of 400 ohms. This impulse current is not easily affected by the conditions of a distribution line side. (b) Protective effects of surge arresters and an overhead ground wire against direct strokes to the pole of a distribution line were clarified experimentally. Experimental results showed the better protective effect than the earlier calculated results. (c) Overvoltages between a line conductor and the earth are inclined to have a short wavetail, a 50% flashover voltage of an insulator against overvoltages with a short wavetail is higher than that against overvoltages with a standard wavetail.

• OSTI ID: 5434583
• Journal Information: IEEE Transactions on Power Delivery; (USA), Journal Name: IEEE Transactions on Power Delivery; (USA) Vol. 4:4; ISSN 0885-8977; ISSN ITPDE
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200104 -- Fossil-Fueled Power Plants-- Components
200300* -- Electric Power Engineering-- Power Transmission & Distribution-- (-1989)
24 POWER TRANSMISSION AND DISTRIBUTION
ELECTRIC DISCHARGES
ELECTRICAL EQUIPMENT
ENVIRONMENTAL EFFECTS
EQUIPMENT
EQUIPMENT PROTECTION DEVICES
LIGHTNING
LIGHTNING ARRESTERS
OVERHEAD POWER TRANSMISSION
OVERVOLTAGE
PERFORMANCE
POWER DISTRIBUTION SYSTEMS
POWER TRANSMISSION
WAVE FORMS