With each profession independently developed and its model parameter library in the dispatch center maintained by itself

poor consistency among multi-source parameters of power grid for lack of a coordination mechanism is inevitable. In view of this

a fusion method for multi-source and heterogeneous parameters of power grid is proposed. The concept of the object name matching knowledge database is put forward

and characteristic vectors and matching rules for three kinds of object names are refined

such as AC lines

transformer windings and generators

which have been applied in the object name matching for the same profession of two levels and different professions of the same level

realizing mutual recognition and correspondence among the parameter names of different systems. The differential index of the parameter is introduced to measure the difference among different sources of parameters

and the organic fusion for multi-source and heterogeneous parameters has been achieved through vertical parameter fusion and transverse parameter fusion

significantly improving the consistency among the parameters from different sources. This method has an important role in improving the consistency among parameters from different professions and enhancing the quality of basic data

which has been proved by actual application in the 220 kV and above power grid of China Southern Power Grid. This work is supported by National High Technology Research and Development Program of China (863 Program) (No. 2012AA050212).