Evaluation of wind power penetration limit from peak regulation

The peak regulation capacity of grid is the primary limit to the wind power penetration level. In order to get a direct recognition to maximum wind power penetration, the limit factors of peak regulation, specially the character of wind power interconnected with grid, were analyzed and a formula was deducted to calculate maximum wind power penetration of grid. After applying the formula in calculating the maximum wind power penetration of a typical grid and analyzing the influence of several factors, the conclusion is that the maximum wind power penetration is affected by multi-factors and the maximum wind power penetration really varies with the economic expense, character of wind power cannot be neglected in calculating of maximum wind power penetration.