Wind farm control work at the University of Strathclyde, past, present and future

摘要: Researchers in the Wind Energy and Control Centre (WECC) at University of Strathclyde have been working on wind farm modelling control (WFC) since 2010, when work began Power Adjusting Controller (PAC), an augmentation to turbine controllers allow flexible accurate power output. The PAC is designed within a hierarchical structure, structure that decentralised scalable (see Figure 1). In order design test strategies model has developed known as StrathFarm. StrathFarm uses models, over past 20 years, which incorporate lumped parameter models drive-train rotor, aerodynamic includes induction lag effects, blade tower loads validated against DNV GL’s Bladed. comprises pre-processed correlated low frequency field, higher effective field components are added locally each turbine. Wakes can be modelled two ways; engineering based Frandsen or fidelity method DTU WFSim model. uniquely placed providing simulation environment allows medium simulations dynamics wakes turbulent winds run better than real time for farms up 100 turbines. Work currently ongoing identifying resolution loading results from StrathFarm, key determining general dependence statistical significance estimates performance length number simulations. Using hierarchy 1 capacity WFC provision ancillary services, namely synthetic inertia, droop control, curtailment, developed. advantage shown becomes apparent implementing these controllers, required change distributed using controller minimise As example, curtailment strategy implements highly whilst reducing damage equivalent (DELs) all operating conditions. reduction DELs high 20% depending level continues focus WECC, with particular interests current in: • increase penetration generation UK grid system storage reduce rating sub-sea inter-connector cables Coordinate offshore converters turbines create virtual plant collective yaw