With the enlargement of scale and gradual appearance of multi-platform coexistence in the power system and for being able to compatible various operation system platforms

a kind of reactive power optimization software of cross-platform area power grid with BPA as data base and hybrid programming method of Qt and Matlab is designed

in which Qt achieves graphical interface and data management

while Matlab achieves reactive power optimization calculation function. The software development with idea of object-oriented technology and modular design integrates such functions as BPA data analysis

network topology analysis

power flow calculation and reactive power optimization and result comparison.Adoption of cross-platform design idea not only brings great convenience for maintenance and upgrades in the future

but also enhances the versatility of the software. The software has obtained satisfactory result throughout practical application.