I tell you clearly that it is necessary. Whether it is photovoltaic or wind power generation, if you want to connect it to the grid, it must be monitored in accordance with the requirements of the power supply bureau. It can only be connected to the grid after meeting the standards of each provincial power grid company. The specific requirements of each provincial power supply bureau are They are all different, so you can consult in detail. In addition, there are national standards for relevant parameters of power quality.
Generally speaking, it is necessary for photovoltaic power generation, taking solar power stations as an example. The solar cells emit direct current, and the power supply from the grid is usually alternating current, so a converter is needed to convert the DC into the grid. The required communication; and in the early days of wind power development, there were small-power wind turbines that could directly connect the electricity generated by the wind speed in a certain range to the grid without going through a converter. However, with the development of technology, in order to obtain more For large-scale wind speed power generation, the currently widely used doubly-fed units and direct-drive units use converters to convert the generated energy into electrical energy that meets the requirements for access to the grid. Therefore, currently technically speaking, it is necessary to connect to the grid through a converter. Mainstream!