Hierarchical Optimization for the Double-Sided Ring Structure of the Collector System Planning of Large Offshore Wind Farms

Wei, Sui; Zhang, Lu; Xu, Yao; Fu, Yang; Li, Fangxing

doi:10.1109/tste.2016.2646061

Cited by 44 publications

(26 citation statements)

References 28 publications

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“…The reliability of cable layouts is an important feature that does not appear to have been studied extensively in the optimization literature. As pointed out by Wei et al (2017), cyclic layouts have been used in several cases, for example in the London Array and Robin Rigg offshore wind farms (The Kingfisher Information Service-Offshore Renewable & Cable Awareness Project (KIS-ORCA) 2016a, 2016b). Quinonez-Varela et al (2007) compare different types of offshore wind-farm layout, including reliable and ramified layouts, and highlight the advantages of reliable ring-layouts with a structure as introduced in Section 1.…”

Section: Literature Reviewmentioning

confidence: 99%

Optimization of reliable cyclic cable layouts in offshore wind farms

Klein

Haugland

2020

Engineering Optimization

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A novel approach for optimizing reliable cable layouts in offshore wind farms is presented. While optimization models traditionally are designed to suggest acyclic cable routes, those developed in this work recognize that cyclic layouts reduce the consequences of cable failures. The models under study take into account that cables cannot cross each other, which, particularly in instances with restrictive cable capacity, can make it attractive to let cables follow a joint trajectory, and visit turbines without connecting to them. A two-layered optimization process is developed. The outer layer is associated with an integer programming problem, which is subject to simultaneous generation of rows and columns representing cable paths. In the inner layer, a problem identifying feasible low cost paths is solved, guided by optimal dual variable values in the continuous relaxation of the former problem. Results from experimental applications to existing wind farms show good promise of the method.

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Section: Literature Reviewmentioning

confidence: 99%

Optimization of reliable cyclic cable layouts in offshore wind farms

Klein

Haugland

2020

Engineering Optimization

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“…In the early stage, genetic algorithms have been frequently utilized to solve the optimal wind farm layout problem [29]. However, many other algorithms have recently been proposed for the purpose [30][31][32][33][34]; they include the binary artificial algae algorithm (AAA), the bionic method, the ant colony algorithm, the minimum spanning tree algorithm, particle swarm optimization, Gaussian particle swarm optimization with a local search strategy, the turbine distribution algorithm, the extended pattern search method, the neural network algorithm, the evolutionary strategy algorithm, and quality threshold clustering. For instance, the study in reference [30] applied different binary algorithms with various transfer functions of AAA to solve the problem of wind turbine locations; the result demonstrates that the proposed algorithm obtains an effective placement of wind turbines with a larger number of grids.…”

Section: Optimization Of Wind Turbine Layoutmentioning

confidence: 99%

Key Issues on the Design of an Offshore Wind Farm Layout and Its Equivalent Model

Zeng

2019

Applied Sciences

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Offshore wind farms will have larger capacities in the future than they do today. Thus, the costs that are associated with the installation of wind turbines and the connection of power grids will be much higher, thus the location of wind turbines and the design of internal cable connections will be even more important. A large wind farm comprises of hundreds of wind turbines. Modeling each using a complex model leads to long simulation times—especially in transient response analyses. Therefore, in the future, simulations of power systems with a high wind power penetration must apply the equivalent wind-farm model to reduce the burden of calculation. This investigation examines significant issues around the optimal design of a modern offshore wind farm layout and its equivalent model. According to a review of the literature, the wake effect and its modeling, layout optimization technologies, cable connection design, and wind farm reliability, are significant issues in offshore wind farm design. This investigation will summarize these important issues and present a list of factors that strongly influence the design of an offshore wind farm.

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“…The collector system of the WF includes transmission lines, the main transformer, and package transformers of the WTs [14]. For the wind farm studied in this paper, the main transformer is a 110 kV/35 kV three-phase step-up transformer connected to the grid, and the package transformer is a 35 kV package integrated compact transformer substation for WT.…”

Section: Objective Functionsmentioning

confidence: 99%

Reactive Power Optimal Control of a Wind Farm for Minimizing Collector System Losses

2018

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A reactive power/voltage control strategy is proposed that uses wind turbines as distributed reactive power sources to optimize the power flow in large-scale wind farms and reduce the overall losses of the collector system. A mathematical model of loss optimization for the wind farm collector systems is proposed based on a reactive power/voltage sensitivity analysis; a genetic algorithm (GA) and particle swarm optimization (PSO) algorithm are used to validate the optimization performances. The simulation model is established based on a large-scale wind farm. The results of multiple scenarios show that the proposed strategy is superior to the traditional methods with regard to the reactive power/voltage control of the wind farm and the loss reduction of the collector system. Furthermore, the advantages in terms of annual energy savings and environmental protection are also estimated.

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Hierarchical Optimization for the Double-Sided Ring Structure of the Collector System Planning of Large Offshore Wind Farms

Cited by 44 publications

References 28 publications

Optimization of reliable cyclic cable layouts in offshore wind farms

Optimization of reliable cyclic cable layouts in offshore wind farms

Key Issues on the Design of an Offshore Wind Farm Layout and Its Equivalent Model

Reactive Power Optimal Control of a Wind Farm for Minimizing Collector System Losses

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