Security-Constrained Economic Operation of Generation-Transmission Systems Considering Spinning Reserve

• Main Authors: Wu, Rong-Chiou, 吳榮秋
• Other Authors: Su, Ching-Tzong
• Format: Others
• Language: zh-TW
• Published: 2003
• Online Access: http://ndltd.ncl.edu.tw/handle/60137161346351844231

碩士 === 國立中正大學 === 電機工程研究所 === 91 === After deregulation of electric power industries, it is necessary for power companies that under free competition to increase operation efficiency. In order to ensure the safety, stability, and reliability of electric systems, the power companies need to be equipped with fine and enough ancillary services including Spinning Reserve and Reactive Power. The Spinning Reserve offers enough electric power to users when the power system is shut down accidentally to maintain the reliability. On the other hand, when bus voltage violates its limits, the Reactive Power is applied to improve the voltage and to maintain the stability of the system. The economic generation dispatch and the optimal programming of ancillary services mentioned above are the major subjects in the current research. There are two parts in this literature. First, the linear programming method is used to solve an economic dispatch problem, considering constraints of power generation capacity, transmission capacity, and Spinning Reserve, to obtain the most economic power generation and the Spinning Reserve. Secondly, the Fast Decoupled powerflow is adapted to analyze the line flows, line losses, and bus voltages. Furthermore, the generation shift factor can be used to adjust the power generation and the Spinning Reserve to alleviate the congestion of circuits. Two systems including a 9-bus system, and a 26-bus system were used as example systems to illustrate the application and show the effectiveness of the proposed method. Various cases considering different constraints were investigated and the numerical results were compared.