DC micro-grid distributed coordination control method based on normalization

The invention relates to the field of DC micro-grid secondary control, in particular to a DC micro-grid distributed coordination control method based on normalization. The method comprises the following steps: S1, constructing a DC micro-grid model; s2, establishing a normalized objective function and solving the normalized objective function; s3, initializing the operation of the power grid; s4, regularly comparing the actual error with the error limit; s5, estimating all admittance values in the power grid; s6, estimating an admittance value of the newly added connecting line; and S7, setting the admittance value of the removed connecting line to be 0. According to the method, the numerical range of the objective function for voltage regulation is adjusted to be close to the numerical range of the proportional load distribution function through a normalization method, the regulation effect of the weight coefficient is enhanced, and the bus states in the direct-current micro-grid are converged to the optimal