Coordinated Generation and Transmission Expansion Planning with Optimal Wind and Thermal Power Integration

In this paper, coordinated transmission and generation expansion planning is presented and a comprehensive approach is proposed for determining optimal wind energy integration. In this way, a multi-state model is introduced for wind farms and correlation between wind farms is considered with a copula method. Optimal wind power integration is determined with regard to desired reliability level. In addition, thermal power integration is obtained for improvement of reliability in the presence of wind farms. Thus, optimal combination of new wind and thermal power is obtained considering technical and economic factors. The impacts of wind speed, correlation between wind farms, reliability level and emission penalty are evaluated on wind power integration and a Benders decomposition method is utilized that can be easily implemented on real large cases. The proposed method is applied to IEEE 24-bus and 118-bus test systems and its performance is demonstrated by evaluating the more influencing factors on wind farms integration.