In order to comprehensively summarize the influential factors of transmission capacity from the perspective of grid topology and related operation factors

first of all

the complicated topology in actual power grid was normalized as a two-dimensional weighted graph which was studied only at its axis direction.Based on the relevant circuit theory

it was proved that

as for the improvement of transmission capacity

compared with increasing the amount of indirectly connected transmission line

increasing the amount of directly connected transmission line was more effective

which was validated by simulation.Secondly

based on the idea of reduced order about the problem of multi-object coupling multi-factor

the transmission network structure was divided into point-to-grid and grid-to-grid.Based on characteristics of each structure

influential factors of transmission capacity were extracted from sending end and receiving end power grid

transmission channel and power supply in actual power grid

then its rationality was proved through a large number of actual grid simulation examples.The above content provides the theoretical support and concrete strategies for improving the transmission capacity of power grid.