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This paper presents the development of forecast models for a wind farm producibility with a 24 hours horizon. The aim is to obtain accurate wind power predictions by using feedforward artificial neural networks. In particular, different forecasting models are developed and for each of them the best architecture is researched by means of sensitivity analysis, modifying the main parameters of the artificial...
In large power electronic systems like a wind farm, the mutual interactions between the control systems of the power converters can lead to various stability and power quality problems. In order to predict the system dynamic behavior, this paper presents an approach to model a wind farm as a Multi-Input Multi-Output (MIMO) dynamic system, where the current control loops with Phase-Locked Loops (PLLs)...
In this paper, an eigenvalue-based harmonic stability analysis method for offshore wind farm is proposed. Considering the internal cable connection layout, a component connection method (CCM) is adopted to divide the system into individual blocks as current controller of converters, LCL filters, collection system cable impedance, transmission cable impedance and grid impedance. By using this method,...
With the increasing capacity of wind farms, the system stability problems caused by output loss of large-scale wind farms become the focus. In fact, the reality indicates that the reclosing failures take place frequently after the wind farms' outgoing circuit faults. Meanwhile, even reclosing the outgoing line successfully, the wind farm output may have a big difference before and after the circuit...
Subsynchronous control interaction (SSCI) has been observed in several wind farms which consist of doubly-fed induction generators (DFIG) and are radially connected to fixed series compensated transmission line. This paper studies the SSCI characteristics of wind farm consisting of different types of generators including DFIG, permanent magnet synchronous generator (PMSG), and self-excited induction...
Wind power plant is regarded as a large-scale system where the interconnections between each subsystem cannot be neglected, otherwise the control strategy cannot guarantee the robustness and system satisfactory efficiency over a wide range of operation. Moreover, voltage stability is the most important ancillary service to preserve doubly fed induction generator (DFIG) connected to the grid during...
This Paper carried out three phase and single phase short circuit tests and verified the security and stability of large scale wind farms integration on Rongcheng power station. Including location and type of short circuit, system operation conditions and measurement of date, summarized the main work between the wind farms short circuit test. Following the ideas of “unit level-wire level-wind farm...
This paper proposes an output power smoothing control strategy for the wind farm without any other energy storage devices (ESS), which is based on the allocation and control of the wind turbines (WT). The wind turbines in the wind farm are divided into control wind turbines (CWT) and power wind turbines (PWT) separately while playing different roles. The PWTs are expected to output as much power as...
Characteristics of PMSGs used for current-source type wind farm composed of series-connected wind generators are studied. A series of experiments was carried out with an experimental set composed of series-connected thyristor rectifiers with PMSGs as wind turbine generators and current-source thyristor inverter. A simulation model based on trapezoidal waveforms of armature electro-motive force for...
Operating characteristics of a large-scale wind farm consisting of series-connected outputs of thyristor rectifiers with 10 wind generators and current source thyristor inverter are simulated. The simulation model is constructed based on MATLAB/Simulink and PLECS. Instantaneous waveforms of various parts of the system are shown considering the wind speed distribution.
Based on the analysis of the negative sequence characteristics of the traction load and the influence of the negative sequence on the operation of the wind farm, this paper presents a method to quantitatively evaluate the effect of electrified railway on wind farms, and the critical electrical distance from the wind farm to the public connection point (PCC) is calculated from the angle of practical...
The study presents a multi-disciplinary application of the Internet of Things (IoT) benefiting both the engineering and music community. A music composition algorithm based on a finite-state machine was designed to receive and manipulate wind turbine voltage output data into a musically aesthetic composition. The algorithm adapts common western music theory and imposes these limitations on the wind...
This paper presents the study of voltage stability improvement of Bac Lieu-Viet Nam power grid including the connected Doubly Fed Induction Generator (DFIG) based wind turbine. A Static Synchronous Compensator (STATCOM) is proposed and is connected to the weakest stability node of the studied system that is figured out based on the power flow calculation results. The analysed voltage results and time-...
Voltage sag is a common dynamic power quality problem. They can cause great economic losses in industrial facilities. The present paper describes the behavior of an electrical power distribution system with doubly fed induction generator (DFIG) based wind farm. The developed system is simulated in Matlab software Simulink. Sags are often caused by short-circuit faults in the power network and are...
Wind power has developed quickly in recent decades. The reliability of wind farms is strongly determined by the insulation conditions of all the assets in the power production and distribution system, which contains the wind turbines, power cables and accessories, switchgears, transformers, etc. The online partial discharge test has been proven to be an effective diagnostic approach to evaluate the...
The article deals with the subject of the influence of a selected wind farm, located in the south-east part of Poland, on electrical power quality, in a power system. The measurements, which were obtained with a power quality analyzer, were analyzed and compared with acceptable values, from appropriate standardization documents.
Developing offshore wind farms are becoming a more attractive solution nowadays. For preventing the changes of the climate, the world leaders have set some environmental goals, which will be difficult to reach out without RES production and the removal of production units with very high emissions. In this paper has been analyzed the possibility to install an offshore wind farm under two constructive...
This paper presents a fuzzy logic based new and effective inertial wind power dispatch strategy in a wind integrated power system. GE 3.6 MW wind turbine (WT) which has provision of additional inertial support is considered for this study. In the proposed strategy, maximum possible releasable kinetic energy (KE) available from individual WTs is estimated (considering multiple wake effect created by...
With the increasing size of the wind farms, the impact of the wake effect on the energy yields and lifetime consumption of wind turbine can no longer be neglected. In this paper, the affecting factors like the wind speed and wind direction are investigated in terms of the single wake and multiple wakes. As the power converter is the most fragile component among the turbine system, its lifetime estimation...
This paper proposes a probabilistic load flow method for wind-integrated power systems static security analysis in the system planning stage. By using the sensitivity matrix, branch outages are simulated through fictitious power injections at the corresponding nodes. So the method introduced in this paper could deal with branch outages, uncertainties of wind farms power injections in a unified procedure...
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