Power grid reduction method using the source and grid homology based on monte Carlo
                                                    ZHANG Shuang mei1, WANG Guo cheng2, LIU Rui chao1
(1.State Grid Tianjin Baodi Electric Power Supply Company, Tianjing 301800, China;2.Everbright Biomass Energy (Tianjin Jixian) Limited, Tianjing 301907, China)

Abstract: Aiming at the renewable energy generation incorporated in the power grids continuously, power grid scale becoming much bigger, and the monitoring and controlling of the grids becoming more and more difficult, so the homology of sources and grids, the non homology of sources and grids and the classification of sources and grids were studied. The homology and non homology of sources and lines in the progress of active power transmission were induced. The index, the way of homology and non homology of sources and grids, and the power grid reduction method using source and grid homology was presented. The many operation modes of the IEEE118 bus system were made by using Monte Carlo as the real operation to test the power grids reduction methods. Experimental results show that the method can verify the homology and non homology of sources and lines, can classify the power grids and can improve efficiency in the voltage and active transmission.

Key words: Monte Carlo; source and grids; homology; reduction