New energy power plant prediction precision and electric quantity deviation constraint method and system

The invention discloses a new energy power plant prediction precision and electric quantity deviation constraint method and system. The method comprises the following steps: inputting equipment parameters of a regional power grid including a new energy power plant into an SCUC model, and outputting a unit output plan; establishing a power prediction precision requirement optimization model, inputting a unit output plan, a short-term power prediction precision requirement and a cost parameter, and outputting an optimal power prediction precision requirement; and establishing an electric quantity deviation check-free range optimization model, inputting an optimal power prediction precision requirement and an electric quantity parameter, outputting an electric quantity deviation check-free range, and constraining the electric quantity deviation of the new energy power plant. The system comprises a data acquisition module, a power prediction precision optimization and determination module and an electric quantity