The present work aimed at optimizing the design of a 300 MW wind farm in which there planned to build three 100 MVA booster stations to raise the voltage level of collection line from 35 kV to 220 kV enabling grid connection through three circuits.In order to reduce construction cost of booster station,considering relative location characteristics of station site,the three booster stations in the original plan were changed to two 35 kV switch stations and one 220 kV collection station,greatly reducing length of transmission line,reducing number of new incoming line intervals at the op-posite station,and reducing investment for outgoing lines.At the same time,the three 100 MVA main transformers in the collection station were changed to one 100 MVA double winding transformer and one 200 MVA split transformer,thus reducing equipment investment and land occupation.
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