Requirement Analysis on Large-scale Renewable Energy DC Collection and Transmission Technology

Networking and integrated transmission of large-scale wind power bases are the key technical links for large-scale wind power bases to connect to the power grid. If the DC pooling scheme is adopted, there will be no reactive power consumption in the wind farm, and the power flow will depend on the DC voltage distribution of the DC pooling network. There is an essential difference between the operation control strategy and the AC pooling, which will solve the reactive voltage stability of the wind farm, and reduce wind farm construction and operating costs, improving operational efficiency. DC aggregation network technology is not only a concern of DC technical workers, but also a problem that other large inland wind farms and offshore wind farms need to study. It can be seen that the research on the DC networking technology scheme of large-scale renewable energy power generation will have guiding significance for the development and utilization of renewable energy power generation in the power grid, promote the healthy development of renewable energy power generation and related industries, and be friendly to the construction of a strong smart grid, provides good technical support.