Correct Cross-Section of Cable Screen in a Medium Voltage Collector Network with Isolated Neutral of a Wind Power Plant

Huthaifa A. Al_Issa, Mohamed Qawaqzeh, Alaa Khasawneh, Roman Buinyi, Viacheslav Bezruchko and Oleksandr Miroshnyk
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Huthaifa A. Al_Issa: Electrical and Electronics Engineering Department, Al Balqa Applied University, 19117 Al Salt, Jordan
Mohamed Qawaqzeh: Electrical and Electronics Engineering Department, Al Balqa Applied University, 19117 Al Salt, Jordan
Alaa Khasawneh: Electrical and Electronics Engineering Department, Al Balqa Applied University, 19117 Al Salt, Jordan
Roman Buinyi: Department of Power Electrical Engineering, Chernihiv Polytechnic National University, str. Shevchenka, 95, 14035 Chernihiv, Ukraine
Viacheslav Bezruchko: Department of Power Electrical Engineering, Chernihiv Polytechnic National University, str. Shevchenka, 95, 14035 Chernihiv, Ukraine
Oleksandr Miroshnyk: Department of Electricity and Energy Management, Kharkiv Petro Vasylenko National Technical University of Agriculture, str. Rizdviana, 19, 61052 Kharkiv, Ukraine

Energies, 2021, vol. 14, issue 11, 1-14

Abstract: The article discusses the selection of cables for power lines connecting wind turbine generators at the wind power plant. The screen cross-section of these cables should be selected considering the value of the screen current at double line-to-earth fault. To calculate this current, the dimensions of the cable should be known. However, these parameters are hidden and cannot be used during designing. Therefore, a highly simplified method is currently used in practice. It is shown that the errors from the highly simplified method are up to 33%. Authors propose a simplified method based on open data of cable manufacturers. The proposed method is compared with simulation results of a common model of cable power line and takes into account self and mutual inductances of the cores and screens. It is shown that the error of the proposed method is smaller than 4.0% for real cable power lines at wind power plants. However, for a long section of cable power line (2.5 km) the error of calculation might increase up to 6.3%. This allows us to use the proposed method for designing. In addition, the authors show how the results of the highly simplified method can be corrected to improve accuracy.

Keywords: wind power plant; cable line; cable screen; double line-to-earth fault current (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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