Energy management system for grid-connected operation of wind and photovoltaic power storage micro-grid system
An energy management system, wind-solar storage technology, applied in wind power generation, single-grid parallel feeding arrangement, energy industry, etc., can solve problems such as difficult to realize, large-capacity micro-grid system off-grid, impact of large power grid, etc., to achieve power generation Stabilization, improved utilization, and real-time power smoothing effects
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[0031] see figure 1 The wind-solar storage micro-grid system proposed by the present invention consists of one or more large-scale wind turbines, one or more photovoltaic units, lithium battery energy storage devices and a micro-grid energy management system. Wind turbines, photovoltaic units, and energy storage devices are all connected to the AC bus through the converter system, and are connected to the large power grid. The invention enables each unit of wind-solar storage to be connected to the grid safely through the energy management of the wind-solar storage micro-grid system. When the load of the plant area changes, the energy management system starts, stops and controls the power of each unit of wind-solar storage, and each unit of wind-solar storage It can operate safely and stably, and only supply power to the load in the plant area, not to the large power grid.
[0032] The basic way of grid-connected operation of wind-solar-storage microgrid system is as follows:...
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