Introduction  With incessant grid-connection of wind farms and photovoltaic power stations， the development of regional power grid structure cannot keep pace with the growth rate of new energy unit capacity， characteristics of multi-energy mix and hierarchical features of section bring difficulties to the formulation of day-ahead generation scheduling， for this reason， a method for multi-level and multi-energy day-ahead generation scheduling considering the safety constraint of the section and the fairness of dispatch was proposed.

  Method  This paper presented a depth-first search for the restricted section， and proposed an output limitation allocation strategy based on information entropy. A fairness calculation method was constructed by using the concept of information entropy in economics to guide the quantitative indicators for evaluating scheduling fairness.

  Result  Under the circumstances of ensuring that the cross-sectional current is close to the stability limit， the active power of each power plant is distributed reasonably and equitably， thereby realizes the full utilization of wind and solar resources.

  Conclusion  Through a practical example of a regional power grid， it is proved that this method can solve the existing problems in new energy day-ahead generation scheduling and has good practical application value.