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In this proposed paper, the system aims that in wind power generation a powerful optimization technique can profitably maximize energy extraction at given wind farms. Maximizing the extraction of wind can be achieved with the Particle Swarm Optimization (PSO). Maximizing wind energy extraction of PSO applied to common Constant frequency (CF) set-up instead of using Variable frequency (VF) set-up....
the abundance of freely available wind energy comes with downside of being stochastic and inconsistent in nature. These properties are not particularly suited for a critically balanced system like electrical transmission grid. This work is primarily focused on assessing the effect of uncertain and stochastic nature of wind power on the stresses it imposes on transmission grid. This impact is studied...
Three types of offshore wind power collection topologies are studied for DC power systems in this paper. Permanent Magnet Synchronous Generator (PMSG) based Wind Energy Conversion System (WECS) is considered and the Optimal Power Control (OPC) is used for the Maximum Power Point Track (MPPT) control. The failure of a wind power unit is regarded as the fault condition in this paper. Voltage control...
There is a trend to build wind turbines in large wind farms and in the near future to operate such a farm as an integrated power production plant. Predictability of individual turbine behaviour is key in such a strategy. In order to minimize the influence on the balance of the electricity grid it is necessary to have stable electricity production by each of the turbines. Hence all turbines should...
Popularity of the offshore wind farms in recent years has been increased because the wind resource in offshore is higher with uniform wind speed and availability of large sea area. Most of the offshore wind farms have MVAC (Medium voltage Alternating Current) distribution system. In this paper MVDC (Medium Voltage Direct Current) distribution system is proposed and the performance of this is compared...
The volatility of the wind generation reduces the profits of wind generators as a consequence of the differences between the real wind generation and the wind power offered in the electricity markets. This paper presents two models: i) wind and generic storage system offering without a physical connection and ii) wind and generic storage system offering with a physical connection to mitigate the wind...
Integrating additional wind energy into the existing power system may cause wind curtailment due to the system operational constraints and reliability requirements. Effective ways to mitigate this problem are to use energy storage or increase transmission capacity. In this paper, the impacts of coordinating with pumped storage and increasing transmission capacity on wind output curtailment mitigation...
The optimal bidding strategy for trading electricity from a wind farm is not always clear. This paper outlines a method for predicting whether the market will be long or short and uses this information to select the best quantile regression for the current market conditions. Results from a simulation with a 2.5MW turbine produced a savings of over £1000 over a three month period compared to using...
This paper aims to compare the effect of wind energy penetration on electricity prices by considering different levels of installed wind capacities. The market clearing problem is formulated as a two stage stochastic optimization problem, where the first stage represents the clearing of the market with scheduled wind production and the second stage models the balancing market operations with different...
Increase in the market share of wind energy in total electricity generation and its impact to power grid has imposed new challenges to the stability of each wind turbine generator (WTG) unit. In the case of power undersupply, the problem on voltage stability and voltage collapse will eventually occur. In this paper, the impact of reactive power control in improving the performance of squirrel cage...
The main objective of this research is the identification of homogeneous groups within a set of wind farms of a major wind energy promoter in Portugal, based on two multivariate analyses: Hierarchical Cluster Analysis and K-means Clustering, using two independent variables, capacity factor and net production, both per year. K-means Clustering output provides the same results as the Hierarchical Cluster...
The integration of renewable energy sources in island grids can be one solution to reduce the yearly amount for diesel, oil or gas consumption for power generation. It reduces also the dependency on supply shortage or price peaks caused by political or seasonal up and downs. A higher penetration of renewable energy sources especially in an autonomous grid leads to problems caused by the variations...
Determining optimal transmission entry capacity (TEC) is very crucial for ensuring an optimal usage of transmission network. It is a complex process to determine the correct TEC levels due to high amount of factors involved. A number of policies encourages the penetration of renewable energy sources with special focus on wind and solar power. Due to intermittent nature of wind energy, the process...
This paper presents a parallel-connected Single Active Bridge (SAB) dc-dc converter for high-power applications. Paralleling lower-power converters can lower the current rating of each modular converter and interleaving the outputs can significantly reduce the magnitudes of input and output current ripples without increasing switching losses or device stresses. Analysis of both the input and output...
In several countries, the wind power penetration increased tremendously in the last years. As the current wind turbines do not participate in frequency control nor reserve provision, this may compromise the proper functioning of the primary control and the provision of power reserves. If no actions are taken, increasing levels of wind penetration may result in serious problems concerning the stable...
Wind generation is the most increasing resource in the renewable energy. Now a days, the wind power has a large installed output power capacity in the world among the renewable energy sources. The wind power integration into power system grids has some effect on power system issues as transmission congestion, optimum power flow, system stability, power quality, system economics and load dispatch....
Like conventional power plants, wind power plants must provide quality power required to ensure the stability and reliability of the power system it is connected to and to satisfy the customers connected to the same grid. Although many operational aspects affecting wind power plant operation are to be discussed, this paper focuses on power quality problems in power system due to the presence of wind...
Short circuit and ground failures that are quite common in power transmission lines are investigated. These failures are designed considering a system that is supplied by this wind system, analysis are interpreted. In the study, a system is set up and it is fed by the wind turbine. Furthermore, the mathematical model of wind turbine and generator is prepared and the results obtained from the simulation...
This paper details the study of permanent magnet synchronous generator (PMSG) for wind turbines and its control for maximum power point tracking, while connected to a High Voltage Direct Current (HVDC) bus using a 12 pulse thyristor network. The connection to the HVDC bus is done without the use of a back-to-back converter for the PMSG, reducing the complexity and cost of the PMSG power converter...
It's a new challenge to power system stability and control when wind farm cluster is connected to Power Grid at a substation. This paper presents work that has been conducted to research this impact on power system transient stability. The paper obtained results conducted in a realistic Power System with installed wind generation equal to 950MW. The results are generally positive that wind farm cluster...
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