There are two different types of wind power generation, namely: off-grid type, which operates independently, and grid-connected type, which operates connected to the power system. Off-grid wind power generation is small-scale and can solve the problem of electricity supply in remote areas through energy storage devices such as batteries or in combination with other wind generation technologies. energy (such as complementary wind/hydroelectric power systems, wind-diesel units). combined power supply systems). Grid-connected wind power generation is a large-scale wind farm, with a capacity of approximately several megawatts to hundreds of megawatts, and composed of tens or even hundreds of wind turbines. Grid-connected wind farms can be offset and supported by the larger electricity grid and exploitmore fully iterate the available wind resources, which is the main development direction of wind power generation at home and abroad. In an increasingly open electricity market environment, the cost of wind power generation will continue to decline if the indirect benefits brought by environmental and other factors are taken into account, wind power is also very economically attractive. The reason why grid-connected wind farms have developed rapidly around the world is not only because of their energy and environmental protection advantages, but also because the wind farms themselves present the following advantages:
(1) Short construction period of wind turbines It and its auxiliary equipment are modular and easy to design and install. The transportation and installation time of a single wind turbine does not exceed pthree months old. The construction period of a 10 MW wind farm does not exceed one year. it can be put into use after installation.
(2) The actual land area is small and the land quality requirements are low. The equipment construction area in the wind farm only accounts for about 1% of the wind farm and the rest of the site. can still be used for agriculture, livestock and fishing.
(3) Operations management is highly automated and can be done without supervision. On the other hand, wind power generation is limited by its primary energy source – wind power.
Improved system flexibility.
Connecting large-scale wind power, photovoltaic power generation and other new energy sources to the electricity grid has increased the requirements for flexibility of the system. There is an urgent need to explore new keys. youenergy storage technologies to enrich peak and valley electricity prices, seasonal electricity prices and differentiated electricity pricing systems.
Photovoltaic generation system, called photovoltaic, refers to a power generation system that uses the photovoltaic effect of photovoltaic cells to directly convert the energy of solar radiation into electrical energy.