Regional transmission planning for large-scale wind power

• Published in: 2009 IEEE Power & Energy Society General Meeting pp. 1 - 6
• Main Authors: Lingling Fan, Osborn, D., Miland, J., Zhixin Miao
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.07.2009
• Subjects: Capacity planning; Contingency Analysis; Economic Analysis; ISO; Large-scale systems; Load flow; Portfolios; Power generation economics; State estimation; Transmission Planning; Voltage; Wind energy; Wind energy generation; Wind Generation
• ISBN: 9781424442416; 1424442419
• ISSN: 1932-5517
• DOI: 10.1109/PES.2009.5275223

To incorporate large-scale wind generation in the Midwest ISO footprint, bulk transmission planning is necessary. In this paper, transmission planning for large-scale wind power is explained in detail. In expansion planning, the wind generation capacities are estimated from state Renewable Portfolio Standards (RPS) and the wind generator locations are chosen based on best wind source zones. From economic analysis, regional transmission enhancement or high voltage overlay projects will be developed to facilitate the transportation of low cost energy to the market. To develop additional transmission projects, two power flow cases (summer peak case and off-peak case) that represent the typical operating conditions are developed for transmission planning. In the summer peak case, wind generators are assumed to be dispatched at 15% of the capacity while in the off-peak case, the system load level is assumed at 70% of the peak load level and the wind generators are dispatched at full. The rest of the generators are dispatched based on security constrained economic dispatch. Contingency analysis of the two power flow cases will tell where are the constraints at lower voltage levels. An integrated transmission plan is therefore developed.