Technical and Economic Comparison of 30 kV Underground Cable and Fully Covered Conductor Solutions
Kohtamäki, Markus (2020)
Kohtamäki, Markus
2020
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:amk-2020122129765
https://urn.fi/URN:NBN:fi:amk-2020122129765
Tiivistelmä
Scope of the thesis is to provide the product management team of Ensto Oy's DSO business unit with an economic and technical comparison of a 30 kV fully covered conductor and underground cable line. The thesis compares two imaginary lines with a length of approximately 20 kilometers.
By utilizing methods of distribution network calculations, such as power losses, voltage drop, annuity and discount calculations, approximate technical and financial results made comparison possible for both line types. The components of the network were not selected based on calculations, because they were given in the starting information of the thesis. Finnish electricity transmission and distribution system and factors affecting loadability of a power line were introduced briefly in the thesis.
The result of the thesis work provide an approximate result of the life cycle costs and technical parameters of both lines. In addition, the work involves comparison of the results obtained and choosing the more profitable line type.
According to the comparison, underground cable line Class 1 was chosen as the more profitable line in terms of economic results. However, the FCCS line is able to transmit more power. If underground cable line Class 2 had been chosen, the FCCS line would be more profitable in terms of economic and technical results. Based on the results, the product management team of Ensto Oy's DSO business unit obtained the necessary calculation methods to perform similar comparison for new objects.
By utilizing methods of distribution network calculations, such as power losses, voltage drop, annuity and discount calculations, approximate technical and financial results made comparison possible for both line types. The components of the network were not selected based on calculations, because they were given in the starting information of the thesis. Finnish electricity transmission and distribution system and factors affecting loadability of a power line were introduced briefly in the thesis.
The result of the thesis work provide an approximate result of the life cycle costs and technical parameters of both lines. In addition, the work involves comparison of the results obtained and choosing the more profitable line type.
According to the comparison, underground cable line Class 1 was chosen as the more profitable line in terms of economic results. However, the FCCS line is able to transmit more power. If underground cable line Class 2 had been chosen, the FCCS line would be more profitable in terms of economic and technical results. Based on the results, the product management team of Ensto Oy's DSO business unit obtained the necessary calculation methods to perform similar comparison for new objects.