Firstly, the impacts of renewable energy integration on transmission network planning from the perspectives of economy, reliability, power flow, load and environment, and the impacts of UHV integration on transmission network planning considering short-circuit are deeply analyzed. Then, according to different emphases of different participants, the assessment indicators of transmission network planning considering power grid enterprises, government and users are established, including life cycle cost index, wind power capacity credit index and so on. The fuzzy comprehensive evaluation method is adopted. Finally, a practical transmission network planning comparison case is carried out, which verifies the effectiveness of the proposed method in this paper and the results are given.
