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2. Dakotas wind transmission study, task 3 and 4 system impact study and transfer capability study. ABB, Report No. 2005-10977-2 R3, 28 June, 2005.
3. G.E. Energy. The effects of integrating wind power on transmission system planning, reliability, and operations, report on phase 2: system performance evaluation. 4 March, 2005.
4. System impact study for the interconnection of wind generation and utility system;Chompoo-inwai;IEEE Transactions on Industry Applications,2005
5. Business practices manual for generator interconnection, version 3, manual no. 015, downloaded on 31 October, available at, http://www.midwestiso.org/publish/Document/3b0cc0_10d1878f98a_-7d230a48324a