The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
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 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.
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...
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...
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...
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 presents a technique to improve the frequency response of a grid system having synchronous generators (steam and hydro types) and a fixed speed induction generator wind turbine. An embedded Low Pass Filter (LPF) in the DC chopper unit of an Energy Capacitor System (ECS) control toplogy was used to provide active and reactive power control to the grid network that is supplying heavy and...
In this paper, the problem of optimal power flow (OPF) is solved in a system integrated with wind farms with the aim of reducing the cost of power production and the reduction of power grid loss by applying the Grey Wolf Optimization (GWO) Algorithm. The variable nature of wind farm output is modeled using two additional cost components corresponding to the states of under estimation and over estimation,...
This paper deals with the low voltage ride through (LVRT) capability of a wind farm comprises different arrangements of the fixed speed and variable speed turbines. Based on the grid code requirements it is seemed that the hybrid topologies can provide better performances than purely either fixed or variable speeds turbines during the fault conditions using DFIG or SCIG. In the hybrid topology two...
The low voltage ride through capability is an important aspect of the operation safety of the wind farm. According to the situation of the lack of effective monitoring of wind turbine operation, a online tracking quantitative evaluation method of wind turbine low voltage ride through capability (LVRT) is brought forward. This method realizes the monitoring and analysis of the safety of the operation...
A rapid increase in wind power installed capacities in many countries can potentially have an effect on their power grid dynamics, in particularly, on the system frequency stability. This is due to the fact that some basic wind turbine generator technologies such as doubly fed induction generator (DFIG), which is most commonly and widely used at present time, do not originally contribute to frequency...
The lifetime of wind farms (estimated between 15 and 20 years) causes several problems for the electricity companies, namely the increase in the maintenance and operation cost as well as the system performance degradation. To solve the problem, the right solution is to replace the old wind turbines by more powerful and new ones which have higher efficiency and performance. This action is called repowering...
Selection of a suitable wind turbine (WT) for any wind farm (WF) project holds a key importance from electrical energy production perspective. Every potential site has a distinct wind distribution, which is the prime factor for variation in energy capture by the same WT at different sites. Wake effect in an array of WTs reduces total energy generation in a WF, while the impact of wake varies with...
Power networks with renewable energy always encounter the imbalance between supply and demand. One case is that during the peak load, generation is normally low or zero and other generation plants adjust more to meet with requirement. The other is during peak generation period, the generated power will exceed the load and be injected to the grid, which will cause the voltage rise and extra power curtailment...
The aim of this paper is to investigate the possibility of setting a wind farm in the region of Ksar-Chellala, which is located in the province of Tiaret at 260 km to the south of Algiers. For this purpose three-hourly wind data, recorded at 10m height over a period of thirteen years were processed and simulated using WAsP software. Annual, monthly, seasonal and daily wind characteristics were assessed...
Optimal power in wind farms has been a problem for constructors and managers during recent years, onshore wind farms are subject to more and more regulations and constraints. The goal is to define optimal installed capacity with maximum reliability and profits. A number of algorithms have thus been developed for the optimization of wind farm power plants. However, according to the literature, no methods...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.