Power grid operation mode construction method and system based on unified planning platform

The invention discloses a unified planning platform-based power grid operation mode construction method and system. The method comprises the steps of determining a source power grid operation mode matched with a production simulation scene; acquiring a power grid topology of the source power grid operation mode, performing production simulation calculation, and performing power distribution, load distribution calculation and section power distribution according to a time sequence production simulation moment-by-moment calculation result to realize active power balance; determining a space-time range of an operation mode on the basis of the operation mode of the source power grid, and performing reactive power optimization and load flow calculation on each partition in the space-time range so as to perform reactive power balance adjustment; and splicing the operation modes corresponding to all the partitions to obtain a whole-network operation mode. According to the method disclosed by the invention, the power