TOPFARM

TOPFARM is a plant-level wind farm optimization framework developed by DTU Wind and Energy Systems. It is built on top of OpenMDAO and integrates with PyWake for aerodynamic wake modelling and OptiWindNet for electrical cable network optimisation.

Features

• Layout optimization - optimize turbine x/y positions subject to boundary and spacing constraints
• Type optimization - select turbine types to maximize AEP or economic objectives
• Hub height optimization - jointly optimize layout and hub heights
• Nested optimization - chain multiple optimization problems
• Smart Start - data-driven initialization to avoid poor local optima
• Multiple drivers - gradient-based (SLSQP, IPOPT), genetic algorithms, stochastic gradient descent
• Recorders - save and replay full optimization trajectories

Quick Start

import numpy as np
from topfarm import TopFarmProblem
from topfarm.cost_models.cost_model_wrappers import CostModelComponent
from topfarm.easy_drivers import EasyScipyOptimizeDriver
from topfarm.constraint_components.spacing import SpacingConstraint
from topfarm.constraint_components.boundary import XYBoundaryConstraint

n_wt = 4
boundary = [(0, 0), (1000, 0), (1000, 1000), (0, 1000)]

def aep_func(x, y, **kwargs):
    # Replace with a wake model, e.g. PyWake.
    return 4e6 - np.sum((x - 500)**2 + (y - 500)**2)

problem = TopFarmProblem(
    design_vars={'x': (np.zeros(n_wt), 0, 1000), 'y': (np.zeros(n_wt), 0, 1000)},
    cost_comp=CostModelComponent(['x', 'y'], n_wt, aep_func, maximize=True),
    constraints=[SpacingConstraint(200), XYBoundaryConstraint(boundary)],
    driver=EasyScipyOptimizeDriver(),
)
cost, state, recorder = problem.optimize()

Installation

pip install topfarm

For the latest development version:

pip install git+https://gitlab.windenergy.dtu.dk/TOPFARM/TopFarm2.git

See the Installation Guide for Conda environments, developer setup, and troubleshooting.

Documentation

Full documentation, notebooks, and examples are at: https://topfarm.pages.windenergy.dtu.dk/TopFarm2

Contributing

Contributions are welcome! Please read CONTRIBUTING.md before opening a pull request.

Citation

If you use TOPFARM in your research, please cite:

Rethore, P.-E. et al. TOPFARM: Multi-fidelity Optimization of Wind Farms. Zenodo. https://doi.org/10.5281/zenodo.3247031