Modeling system of power grid model based on logical relationship

The invention provides a modeling system of a power grid model based on a logical relationship. The modeling system comprises an operating task integrating module, a task interpreter, a graph layout and correction module, a graph line arrangement and correction module and a database model augmentation correction module, and the database model augmentation correction module comprises a graph augmentation calculation unit and a model augmentation calculation unit. Meanwhile, the invention provides a modeling method using the modeling system. The logical relationship is used by the system for description, based on the support of an automatic line arrangement technology, the graph-model integral generation of the new power grid model of a power system described based on the logical relationship is achieved in a graphical mode, the power grid model is completely defined and modified on 'one grid', a power system model is not built on countless net graphs, and therefore power grid operation and management personnel can be helped to build and modify the power grid model of the whole system accurately and fast, and the modeling system is visual, reliable, accurate and easier to operate.