For access to the location of the distributed power supply for the regularity of the distribution network voltage optimization under different connection mode

aiming to optimize the target of system voltage influence coefficient

use power balance

node voltage

branch capacity as constraints

and use AHSPSO algorithm for different connection mode of distributed power grid position to optimize the wiring mode different optimal access position. Using IEEE—33 node distribution network model for simulation comparison

analyze on influence regularity of DG grid position on distribution network voltage in different connection modes. The results show that only correctly and reasonably configurate DG access position in different connection mode can more effectively play a role of voltage support.