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The type of wind turbine power system Sep 03, 2018

Wind power can be divided into grid-connected wind power and off-grid wind power. Off-grid type means that it operates independently of the grid and has a small stand-alone capacity.

Wind power can be divided into grid-connected wind power and off-grid wind power. The former is connected to the power grid and has a large single-unit capacity. Now it has developed to a single-machine megawatt level; while the latter operates independently of the power grid and has a small stand-alone capacity. Compared with grid-connected wind power generation systems, off-grid wind power generation systems have the advantages of low cost, flexible application, and easy maintenance. Therefore, they are very suitable for power grids such as pastoral areas, forest areas, communication base stations, weather stations, islands, and border guard posts. Areas that are effectively covered. In recent years, with the rapid development of the global wind power industry, off-grid wind power systems have played an increasingly important role in these applications. According to the Global Data2011 report, the global small wind turbines (the majority of off-grid models) have grown at an average annual rate of 27% over the past five years, and are expected to increase to an average annual growth rate of 29.7% by 2020. According to the American Wind Energy Association, in 2011, North American and European manufacturers produced and sold a small number of small wind turbines (the majority of off-grid), an increase of 13.4% over 2010. According to the statistics of the British Renewable Energy Association, in 2009 theUK's small and medium-sized wind power system (the majority of the off-grid type) has reached 35.8GWh, and it is estimated that by 2020, theUK's small wind turbines will have a total installed capacity of 1300MW. Its annual power generation can reach 1700GWh. InChina, the off-grid wind power industry has also achieved phenomenal growth. From 2003 to 2013, the annual output ofChina's off-grid wind power generation system increased by 405%, reaching 100,645 units per year. With the continuous advancement of technology, domestically produced off-grid wind power generation systems have been exported to many countries in Europe, theAmericasand Asia.

Grid-connected wind power system: wind turbine---on grid controller---on grid inverter---grid---load;

Off-grid wind power system: wind turbine---off grid controller---battery pack---off grid inverter---load;

Wind and solar Hybrid off-grid system: (wind turbine + solar panel) --- wind and solar hybrid controller --- battery pack --- off-grid inverter --- load.

hybrid wind and solar system