Introduction to Voigt's wind power plant

The design and operation of a 100 kilowatt wind driven generator are reported. Its high speed three-bladed turbine operates at a height of 50 meters. Blades are rigidly connected to the hub and turbine revolutions change linearly with wind velocity, maintaining a constant speed ratio of blade tip velocity to wind velocity over the full predetermined wind range. Three generators installed in the gondola generate either dc or ac current. Based on local wind conditions, the device has a maximum output of 720 kilowatts at a wind velocity of 16 meters per second. Total electrical capacity is 750 kilowatts, and power output per year is 2,135,000 kilowatt/hours

Utjecaj vjetroelektrana na rad elektroenergetskog sustava – 1. dio: Pogon vjetroelektrana i kriteriji priključenja na mrežu

For the purpose of a comprehensive review of power system operation with the connection of wind power plants, this review is presented in two articles. The first article presents the main concepts of wind power plants, technical possibilities of wind power plant operation and all requested criteria for connecting the wind power plant to the power system. In the second article the power quality after connecting wind power plant to the distribution network, energy losses in distribution network with connected wind power plant and feasibility and development of electrical energy production with wind power plants in the power system of the Republic Croatia are considered.Zbog sveobuhvatnosti pregleda rada elektroenergetskog sustava s priključenim vjetroelektranama pregled se prikazuje u dva članka. U prvom članku prikazani su osnovni pojmovi o vjetroelektranama, tehničke mogućnosti pogona vjetroelektrana i svi zahtijevani kriteriji priključenja vjetroelektrane na elektroenergetski sustav. U drugom članku razmatra se kvaliteta električne energije nakon priključenja vjetroelektrane na distribucijsku mrežu, gubici energije u distribucijskoj mreži s priključenom vjetroelektranom, te mogućnost proizvodnje i razvoj proizvodnje električne energije s vjetroelektranama u elektroenergetskom sustavu Republike Hrvatske

Modelling and Stability Analysis of Wind Power Plants Connected to Weak Grids

It is important to develop modelling tools to predict unstable situations resulting from the interactions between the wind power plant and the weak power system. This paper presents a unified methodology to model and analyse a wind power plant connected to weak grids in the frequency-domain by considering the dynamics of the phase lock loop (PLL) and controller delays, which have been neglected in most of the previous research into modelling of wind power plants to simplify modelling. The presented approach combines both dq and positive/negative sequence domain modelling, where a single wind turbine is modelled in the dq domain but the whole wind power plant connected to the weak grid is analysed in the positive/negative sequence domain. As the proposed modelling of the wind power plant is systematic and modular and based on the decoupled positive/negative sequence impedances, the application of the proposed methodology is relevant for transmission system operators (TSOs) to assess stability easily with a very low compactional burden. In addition, as the analytical dq impedance models of the single wind turbine are provided, the proposed methodology is an optimization design tool permitting wind turbine manufacturers to tune their converter control. As a case study, a 108 MW wind power plant connected to a weak grid was used to study its sensitivity to variations in network short-circuit level, X/R ratio and line series capacitor compensation (Xc/Xg)

Theoretical aspects of modeling of wind-power plants

Наведено теоретичні аспекти моделювання вітроенергетичної установки, яке проводиться з метою розрахункової перевірки конструктивних рішень, розроблення та апробації можливих алгоритмів керування її роботою. Розглянуто загальну структурну схему вітроенергетичної установки, проаналізовано принципи її функціонування та розроблено графічну інтерпретацію потоків потужності. Проаналізовано загальні етапи моделювання – розробку математичних моделей та їх подальшу реалізацію за допомогою програмних комплексів на ЕОМ (комп’ютерне моделювання) для різних функціональних систем і елементів вітроустановки.Theoretical aspects of modeling of the wind-power plant, which is conducted with the purpose of estimated investigation of design concepts, development and approbation of possible algorithms of operation of its work, are introduced in the article. The general structure of the wind-power plant is considered, principles of her functioning are analyzed and graphic interpretation of flows of power is worked out. The general phases of modeling – development of mathematical models and their further realization by means of programmatic complexes on computer (computer simulation) are analyzed for different functional systems and elements of the wind-power plant

Perancangan Turbin Sumbu Horizontal dan Sumbu Vertikal untuk Pembangkit Listrik Tenaga Angin (Studi Kasus di Kota Bengkulu)

ABSTRACTWind Power Plant is a power plant that uses wind as an energy resources to produce electrical energy. The Bengkulu region which is mostly a coastal area with conditions of strong wind speeds that can be utilized as a source of wind power generation. Wind energy can be utilized as an alternative and renewable energy source using wind turbine. Wind turbine performance depends on the shape, position and dimensions of the turbine, etc. In this study focus on the design of wind power plants with horizontal axis turbine position and vertical axis turbine position. Wind turbine was designed with 3 blades made of wood materials. The permanent magnet DC generator are used for generator in the horizontal axis and vertical axis wind turbine positions with maximum power that can be generated at 800 Watt. Testing of the two types of turbines was carried out on the coast of Bengkulu city. The results shows that the horizontal axis wind power plant design starts rotating at a wind speed of 3.5 m / s, while the vertical axis wind power plant design starts rotating at a wind speed of 6.5 m / s. The voltage generated by the horizontal axis wind power plant at a wind speed of 3.5 m / s is 12 Volts. The voltage generated by the vertical axis wind power plant at a wind speed of 6.5 m / s is 9 Volts

Perancangan Rotor Turbin Angin Savonius Tipe-L Untuk Pembangkit Listrik Pada Rumah Tinggal

Rotor is one of the main component in wind power plant. The rotor plays a role in converting wind energy into rotary energy / mechanical energy. To connect the rotor to the gear requires a shaft. This research aims to design a rotor Savonius Wind Turbine with an L blade type for a Wind Power Plant. This research has two purposes, first to design the Rotor Savonius Wind Turbine and then simulate the rotor in the Ansys Workbench 18.1 to sees the output power. Second is making a Rotor to complete a miniature Wind Power Plant with a ratio of 1:5.             The result of the Rotor design is that the diameter is 1.25 m and the height is 2.5 m. Can operate at 6.25 m/s with the output power is 120 Watt. The rotor miniature can function properly and has been installed on a miniature Wind Power Plant. Keywords: Rotor, Wind Power Plan

OPERATION OF WIND FARMS TO DEFECTS IN THE MEDIUM VOLTAGE GRID

Integrating wind power in medium voltage networks raise problems both economic and technical. The article presents a wind power plant integration in a medium voltage network and its operation in case of fault on other section than the line that wind power plant inject power. In the wind power plant is connected and compensator STATCOM for reactive power compensation. The wind power plant is equipped with squirrel cage induction generators

見えの形に注目した風力発電サイトの景観影響評価法の提案と評価

The wind-power site came to be built in the area being closer to the life area of inhabitants, and we came to see wind-power plant frequently than before, For studying on the relation between a visual feature of wind-power plant and a landscape new methods of view impact evaluation. In visible discrimination analysis, using a score of depth of invisibility, the methods to quantify an impact of form of appearance were proposed. In photo montage survey, the quantifying methods of balance felling in plants allocation were proposed. Our proposed assessment method was applied to the actual view impact assessment in the Omaezaki (Shizuoka)wind power development and the effectiveness of our methods was examined.The wind-power site came to be built in the area being closer to the life area of inhabitants, and we came to see wind-power plant frequently than before, For studying on the relation between a visual feature of wind-power plant and a landscape new methods of view impact evaluation. In visible discrimination analysis, using a score of depth of invisibility, the methods to quantify an impact of form of appearance were proposed. In photo montage survey, the quantifying methods of balance felling in plants allocation were proposed. Our proposed assessment method was applied to the actual view impact assessment in the Omaezaki (Shizuoka)wind power development and the effectiveness of our methods was examined