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Calculation of economic transmission connection capacity for wind power generation

Ault, G.W. and Bell, K.R.W. and Galloway, S.J. (2007) Calculation of economic transmission connection capacity for wind power generation. IET Renewable Power Generation, 1 (1). pp. 61-69. ISSN 1752-1416

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Abstract

Applications for the connection of large-scale wind power generation to transmission networks are presenting new issues both for transmission system planners and generation developers. One of the major problems faced is the assessment of transmission system capacity requirements for the export of power from areas with high penetration of variable and intermittent sources of generation such as wind power. A method for evaluating the required transmission connection capacity from an area dominated by wind generation to the main interconnected system is presented, based on historical time series data for both wind power generation output and the demand in the group. The operational implications for the transmission system and generation owners are evaluated using a cost-benefit approach. The method is demonstrated for a number of network situations. Conclusions are drawn about the value of the method and, more generally, about the trade-off between investment in transmission capacity and curtailment of wind generation under favourable wind conditions.