A Hybrid Cable Connection Structure for Wind Farms With Reliability Consideration

Junxian Li, Weihao Hu, Xiaowei Wu, Qi Huang, Zhou Liu, Zhe Chen, Frede Blaabjerg

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Resumé

The collector system in wind farm has a large number of cables. When one of the cable fails, the power generated by the wind turbine (WT) cannot be collected into the substation through the faulty cable. That would make the profits for the wind farm reduced. Therefore, it is necessary to find a more reliable cable structure, which can transfer power as much as possible even if the cable failure occurs. In this paper, a new cable connection method is proposed in two main steps to improve both the reliability of the cable connection and the economic. Two different wind farms with the same climatological information and high voltage substation location are investigated and compared in the case study. In the first step, the minimum spanning tree (MST) algorithm is adopted to connect all wind turbines (WTs) to the substation. The cables used in collector system are the 33-kV middle voltage alternating current (MVAC) cables. Then the power production generated by WTs is transmitted from substation to the high voltage substation via a 132-kV transmission cable. The initial cable connection layout is obtained in the first step and the total trenching length is optimized to be minimum. In addition, cable selection in each branch can be determined based on the cable current carrying capacity. In the second step, reliability assessment is implemented by analyzing the expected energy not supplied (EENS). Based on EENS, the evaluation index LPCrel is obtained. This index takes both reliability and economy into account. Additional cables found by particle swarm optimization (PSO) algorithm are added to the initial cable connection layout. Finally, a cable layout called hybrid structure is formed. What is more, by adding additional cables, the LPCrel is reduced by 1.5%. The simulation results clearly indicate that the proposed method is better when the cable failure is considered.
OriginalsprogEngelsk
TidsskriftIEEE Access
Vol/bind7
Sider (fra-til)144398 - 144407
Antal sider10
ISSN2169-3536
DOI
StatusUdgivet - okt. 2019

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Farms
Cables
Wind turbines
Electric potential
Trenching
Particle swarm optimization (PSO)

Citer dette

Li, Junxian ; Hu, Weihao ; Wu, Xiaowei ; Huang, Qi ; Liu, Zhou ; Chen, Zhe ; Blaabjerg, Frede. / A Hybrid Cable Connection Structure for Wind Farms With Reliability Consideration. I: IEEE Access. 2019 ; Bind 7. s. 144398 - 144407.
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title = "A Hybrid Cable Connection Structure for Wind Farms With Reliability Consideration",
abstract = "The collector system in wind farm has a large number of cables. When one of the cable fails, the power generated by the wind turbine (WT) cannot be collected into the substation through the faulty cable. That would make the profits for the wind farm reduced. Therefore, it is necessary to find a more reliable cable structure, which can transfer power as much as possible even if the cable failure occurs. In this paper, a new cable connection method is proposed in two main steps to improve both the reliability of the cable connection and the economic. Two different wind farms with the same climatological information and high voltage substation location are investigated and compared in the case study. In the first step, the minimum spanning tree (MST) algorithm is adopted to connect all wind turbines (WTs) to the substation. The cables used in collector system are the 33-kV middle voltage alternating current (MVAC) cables. Then the power production generated by WTs is transmitted from substation to the high voltage substation via a 132-kV transmission cable. The initial cable connection layout is obtained in the first step and the total trenching length is optimized to be minimum. In addition, cable selection in each branch can be determined based on the cable current carrying capacity. In the second step, reliability assessment is implemented by analyzing the expected energy not supplied (EENS). Based on EENS, the evaluation index LPCrel is obtained. This index takes both reliability and economy into account. Additional cables found by particle swarm optimization (PSO) algorithm are added to the initial cable connection layout. Finally, a cable layout called hybrid structure is formed. What is more, by adding additional cables, the LPCrel is reduced by 1.5{\%}. The simulation results clearly indicate that the proposed method is better when the cable failure is considered.",
keywords = "Wind farm, MST algorithm, Reliability and economy, PSO algorithm, Cable connection layout",
author = "Junxian Li and Weihao Hu and Xiaowei Wu and Qi Huang and Zhou Liu and Zhe Chen and Frede Blaabjerg",
year = "2019",
month = "10",
doi = "10.1109/ACCESS.2019.2944888",
language = "English",
volume = "7",
pages = "144398 -- 144407",
journal = "IEEE Access",
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A Hybrid Cable Connection Structure for Wind Farms With Reliability Consideration. / Li, Junxian; Hu, Weihao; Wu, Xiaowei; Huang, Qi; Liu, Zhou; Chen, Zhe; Blaabjerg, Frede.

I: IEEE Access, Bind 7, 10.2019, s. 144398 - 144407.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - A Hybrid Cable Connection Structure for Wind Farms With Reliability Consideration

AU - Li, Junxian

AU - Hu, Weihao

AU - Wu, Xiaowei

AU - Huang, Qi

AU - Liu, Zhou

AU - Chen, Zhe

AU - Blaabjerg, Frede

PY - 2019/10

Y1 - 2019/10

N2 - The collector system in wind farm has a large number of cables. When one of the cable fails, the power generated by the wind turbine (WT) cannot be collected into the substation through the faulty cable. That would make the profits for the wind farm reduced. Therefore, it is necessary to find a more reliable cable structure, which can transfer power as much as possible even if the cable failure occurs. In this paper, a new cable connection method is proposed in two main steps to improve both the reliability of the cable connection and the economic. Two different wind farms with the same climatological information and high voltage substation location are investigated and compared in the case study. In the first step, the minimum spanning tree (MST) algorithm is adopted to connect all wind turbines (WTs) to the substation. The cables used in collector system are the 33-kV middle voltage alternating current (MVAC) cables. Then the power production generated by WTs is transmitted from substation to the high voltage substation via a 132-kV transmission cable. The initial cable connection layout is obtained in the first step and the total trenching length is optimized to be minimum. In addition, cable selection in each branch can be determined based on the cable current carrying capacity. In the second step, reliability assessment is implemented by analyzing the expected energy not supplied (EENS). Based on EENS, the evaluation index LPCrel is obtained. This index takes both reliability and economy into account. Additional cables found by particle swarm optimization (PSO) algorithm are added to the initial cable connection layout. Finally, a cable layout called hybrid structure is formed. What is more, by adding additional cables, the LPCrel is reduced by 1.5%. The simulation results clearly indicate that the proposed method is better when the cable failure is considered.

AB - The collector system in wind farm has a large number of cables. When one of the cable fails, the power generated by the wind turbine (WT) cannot be collected into the substation through the faulty cable. That would make the profits for the wind farm reduced. Therefore, it is necessary to find a more reliable cable structure, which can transfer power as much as possible even if the cable failure occurs. In this paper, a new cable connection method is proposed in two main steps to improve both the reliability of the cable connection and the economic. Two different wind farms with the same climatological information and high voltage substation location are investigated and compared in the case study. In the first step, the minimum spanning tree (MST) algorithm is adopted to connect all wind turbines (WTs) to the substation. The cables used in collector system are the 33-kV middle voltage alternating current (MVAC) cables. Then the power production generated by WTs is transmitted from substation to the high voltage substation via a 132-kV transmission cable. The initial cable connection layout is obtained in the first step and the total trenching length is optimized to be minimum. In addition, cable selection in each branch can be determined based on the cable current carrying capacity. In the second step, reliability assessment is implemented by analyzing the expected energy not supplied (EENS). Based on EENS, the evaluation index LPCrel is obtained. This index takes both reliability and economy into account. Additional cables found by particle swarm optimization (PSO) algorithm are added to the initial cable connection layout. Finally, a cable layout called hybrid structure is formed. What is more, by adding additional cables, the LPCrel is reduced by 1.5%. The simulation results clearly indicate that the proposed method is better when the cable failure is considered.

KW - Wind farm

KW - MST algorithm

KW - Reliability and economy

KW - PSO algorithm

KW - Cable connection layout

U2 - 10.1109/ACCESS.2019.2944888

DO - 10.1109/ACCESS.2019.2944888

M3 - Journal article

VL - 7

SP - 144398

EP - 144407

JO - IEEE Access

JF - IEEE Access

SN - 2169-3536

ER -