Reduced neutral XLPE cable design

Valli, G F; Zawadzki, J A; Orton, H E

doi:10.1109/61.53085

Title: Reduced neutral XLPE cable design

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Abstract

This paper describes the theoretical, laboratory and economic analyses undertaken to determine the optimum metallic concentric neutral design for its single conductor 750 and 500 kcmil aluminum XLPE 15 kV insulated concentric-neutral type feeder cables. The results suggest that reducing the cross-sectional area of this concentric neutral from the currently-recognized industry standard of 20 percent of the central conductor to 7% results in overall present-worth system cost saving of approximately $3 per conductor meter or approximately 22% of the cable first cost. The neutral configuration ultimately chosen to replace the previous standard 37 - number 14 AWG wires was 2 - 1 inch {times} 5 mil tinned copper tapes overlapped by 25%. Line voltage fault test were run in the high-power laboratory on samples with various neutral configurations to confirm they would successfully pass our worst-case fault duty of 10 kA for 20 cycles (i.e., .33 sec) with no reclosing.

Authors:

Valli, G F; Zawadzki, J A; Orton, H E ^[1]

British Columbia Hydro and Power Authority, Vancouver, BC (Canada)

Publication Date:: Sun Apr 01 00:00:00 EST 1990

OSTI Identifier:: 7081191

Resource Type:: Journal Article

Journal Name:: IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers); (USA)

Additional Journal Information:: Journal Volume: 5:2; Journal ID: ISSN 0885-8977

Country of Publication:: United States

Language:: English

Subject:: 24 POWER TRANSMISSION AND DISTRIBUTION; ELECTRIC CABLES; DESIGN; ECONOMIC ANALYSIS; CABLES; CONDUCTOR DEVICES; ECONOMICS; ELECTRICAL EQUIPMENT; EQUIPMENT; 240100* - Power Systems- (1990-); 240700 - Power Transmission & Distribution- Economic, Industrial & Business Aspects- (1990-)

Citation Formats


                    Valli, G F, Zawadzki, J A, and Orton, H E. Reduced neutral XLPE cable design.  United States: N. p., 1990. 
        Web.  doi:10.1109/61.53085.

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                    Valli, G F, Zawadzki, J A, & Orton, H E. Reduced neutral XLPE cable design.  United States.  https://doi.org/10.1109/61.53085

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                    Valli, G F, Zawadzki, J A, and Orton, H E. 1990.  
        "Reduced neutral XLPE cable design".  United States.  https://doi.org/10.1109/61.53085.

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@article{osti_7081191,

  title        = {Reduced neutral XLPE cable design},

  author       = {Valli, G F and Zawadzki, J A and Orton, H E},

  abstractNote = {This paper describes the theoretical, laboratory and economic analyses undertaken to determine the optimum metallic concentric neutral design for its single conductor 750 and 500 kcmil aluminum XLPE 15 kV insulated concentric-neutral type feeder cables. The results suggest that reducing the cross-sectional area of this concentric neutral from the currently-recognized industry standard of 20 percent of the central conductor to 7% results in overall present-worth system cost saving of approximately $3 per conductor meter or approximately 22% of the cable first cost. The neutral configuration ultimately chosen to replace the previous standard 37 - number 14 AWG wires was 2 - 1 inch {times} 5 mil tinned copper tapes overlapped by 25%. Line voltage fault test were run in the high-power laboratory on samples with various neutral configurations to confirm they would successfully pass our worst-case fault duty of 10 kA for 20 cycles (i.e., .33 sec) with no reclosing.},

  doi          = {10.1109/61.53085},

  url          = {https://www.osti.gov/biblio/7081191},
  journal      = {IEEE Transactions on Power Delivery (Institute of Electrical and Electronics Engineers); (USA)},

  issn         = {0885-8977},

  number       = ,

  volume       = 5:2,

  place        = {United States},

  year         = {Sun Apr 01 00:00:00 EST 1990},

  month        = {Sun Apr 01 00:00:00 EST 1990}

}

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