Research on wide-area cooperation control for renewable energy and conventional generation

Expanding the scope of renewable energy consumption and allowing surplus electricity to be consumed in a wider range is an effective way to improve the consumption capacity of renewable energy. The scale of renewable energy power generation on the DC transmission side continues to expand and will become the main power source. This puts forward new technical requirements for the consumption form of renewable energy and the control mode of transceiver unit. The transformation from local consumption at the transmitting end to joint consumption at the transmitting and receiving ends requires coordinated control of the transmitting end, receiving end and AC / DC power supply of large-scale global renewable energy consumption At the same time, the power of transmission system fluctuates greatly with the power of renewable energy, and the power of power grid at the receiving end fluctuates greatly. The control mode of the receiver unit can be extended from the locally adjusted control mode to the wide area control mode that can respond to the transmitter power fluctuation. How to improve the receiving end system's ability to receive renewable energy needs the coordination of local control and wide area control. Therefore, there is an urgent need to study the technical feasibility of global absorption of frequency modulation and peak shaving of large-scale wind power, and solve the problem of remote regulation of renewable energy by conventional power supply at the receiving end by expanding conventional power wide area control.