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Stand-alone ac power supply system such as isolated islands is subject to large frequency and voltage fluctuations caused by power deviations of wind turbine generator and load demand. The autonomous decentralised frequency control system of parallel operated decentralised generators based on droop characteristic is presented in this study. The conventional droop control methods proposed in past researches...
Wind energy conversion systems have become important in the research of renewable energy sources. This is not a small part due to the rapid advances in the size of wind generators as well as the development of power electronics and their applicability in wind energy extraction. However, wind energy has a drawback of having only 1/800 density as compared to that of water energy, and it does not remain...
Stand alone ac power supply system like that is designed for isolated islands is subjected to large frequency and voltage fluctuations caused by power deviation of wind turbine generator and load demand. An autonomous decentralized frequency control system of parallel operated decentralized generators based on droop characteristic is presented in this paper. The conventional droop control methods...
The output power fluctuation of renewable energy power plants such as wind turbine generator and photovoltaic system result in frequency deviation and terminal voltage fluctuation. Furthermore, these power fluctuations also affect the turbine shafting of diesel generator and gas-turbine generators which are the main power generation systems in isolated islands. This paper presents a control strategy...
The output power fluctuation of renewable energy power plants such as wind turbine generator and photovoltaic system result in frequency deviation and terminal voltage fluctuation. Furthermore, these power fluctuations also affect the turbine shafting of diesel generator and gas-turbine generators which are the main power generation systems in isolated islands. This paper presents a control strategy...
The output power fluctuation of renewable energy power plants such as wind turbine generator and photovoltaic system result in frequency deviation and terminal voltage fluctuation. Furthermore, these power fluctuations also affect the turbine shafting of diesel generator and gas-turbine generators which are the main power generation systems in isolated islands. This paper presents a control strategy...
Nowadays, renewable energy such as wind turbine generator and photovoltaic system are introduced in power system. Output power fluctuations of these generation systems will result in frequency deviations and terminal voltage fluctuations. In order to overcome these problems, battery energy storage system is used for frequency and voltage control. However, it needs large capacity of battery system...
Due to the large output power fluctuations of a wind power generator, a battery is installed to smooth these fluctuations. However, if a large battery is installed in the power system, the capital cost for wind power system will increase. Hence the smallest size of battery is preferable to save on capital cost. In this paper, we propose a methodology for controlling combined system output and optimal...
With increased structural flexibilities of modern wind energy conversion systems (WECSs), drive-train torsional oscillations due to high wind disturbances can be hazardous to power systems. It is particularly important to design control schemes that properly account for the flexible modes of the turbine, and maintain stable closed-loop behavior of the WECS. To capture the essential features of the...
Generating power of wind turbine varies in proportion to the cube of wind speed, so they cannot supply constant power and this causes frequency and voltage fluctuations. This paper presents a methodology for controlling grid frequency, hydrogen volume and terminal bus voltage. This system consists of diesel generator, wind turbine and load. Aqua electrolyzer and fuel cell are installed in order to...
Wind energy is a significant and powerful resource. It is safe, clean, and abundant. Variable speed power generation for a wind turbine is attractive, because maximum efficiency can be achieved at all wind velocities. However, this system requires parameters of wind turbine for calculation of the optimum wind turbine operation speed. In this paper, a technique is proposed for maximum power point tracking...
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