Effects of voltage surges on extruded dielectric cable life project update

Journal Article · Fri Apr 01 00:00:00 EST 1994 · IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/61.296236· OSTI ID:6985737

Hartlein, R A; Harper, V S ^[1]; Ng, H ^[2]

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1. Georgia Power Co., Atlanta, GA (United States)
2. Electric Power Research Inst., Palo Alto, CA (United States)

Electric utility engineers have commented that extruded distribution cables frequently fail during or shortly after a thunder storm. These engineers also comment that failures often reoccur on cable circuits where previous failures were located with a thumper. Linemen at Georgia Power often make similar comments. To investigate this observation, crosslinked (XLPE) and tree retardant crosslinked (TRXLPE) cable designs were subjected to accelerated water treeing tests. Samples were subjected to simulated lightning surges or simulated thumping surges. Crosslinked cables removed after 15 years of service operation were also subjected to these surges. The results show that, in some cases, lightning surges do reduce extruded distribution cable life. Also, high level thumping surges appear to reduce cable life once cables are well aged.

• OSTI ID: 6985737
• Journal Information: IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers); (United States), Vol. 9:2; ISSN 0885-8977
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
ELECTRIC CABLES
ELECTRICAL INSULATION
FAILURES
LIGHTNING
POWER DISTRIBUTION SYSTEMS
SURGES
CABLES
CONDUCTOR DEVICES
ELECTRIC DISCHARGES
ELECTRICAL EQUIPMENT
EQUIPMENT
240301* - Power Transmission Lines & Cables- Power Cables- (1990-)