METHODOLOGY FOR PROBABILISTIC SIMULTANEOUS TRANSFER CAPABILITY ANALYSIS

This paper presents a methodology for simultaneous transfer capability analysis based on a probabilistic approach. All areas in a large scal e power system are divided into three groups: (a) study area, (b) tran sfer participating areas: and (c) external areas which have no direct transactions or they have fixed transactions with the study area. A pe rformance index based contingency selection procedure is applied withi n the study and transfer participating areas to rank those contingenci es which will affect simultaneous transfer capability. The contingency ranking order is utilized by. variation of the Wind Chime diagram to selected contingencies which ate then evaluated by an optimal power fl ow algorithm. Subsequently, the probability distribution of simultaneo us transfer capability is computed based on the electric load, circuit and unit outage Markov models. The 24x3 bus IEEE RTS is utilized to e valuate the proposed method. The performance of the proposed method is also demonstrated on an actual large scale system (2182 bus, 8 area s ystem).