期刊名称：Bulletin of the Institute of Heat Engineering
印刷版ISSN：2083-4187
出版年度：2020
卷号：100
期号：2
页码：92-101
出版社：Warsaw University of Technology
摘要：With the rapid development of new energy power generation, large-scale wind power generation has been integrated into power grids. However, the fluctuation and discontinuity of wind power have introduced challenges to the safe and reliable operation of power systems. Therefore, constructing a reasonable dispatching method considering the uncertainty of wind power output has become an important topic. This study aims to establish a reasonable power system dispatching optimization method considering the uncertainty of wind power output. Hence, an ellipsoidal robust set of wind power output was initially constructed in accordance with the predicted value and predicted error of wind power. Second, a power system optimization dispatch model of automatic generation control (AGC) was established on the basis of the robust set. This model aimed to minimize the cost of power generation and maximize the use of wind power according to the following constraint conditions: power system power balance, upper and lower limit of wind and thermal power unit outputs, climbing power, and spinning reserve. Finally, the internal point method was employed to solve the example. Results show that on the premise of safe operation, the total operating cost of the robust optimization dispatch method is decreased by 8.64% compared with that of the traditional dispatch method, and the economic efficiency is improved. The robust optimal dispatch considers the uncertainty of wind power output, and load shedding scene seldom occurs, thereby enhancing the operational reliability. This study can improve the reliability and economics of power system operation and provide a basis for optimization dispatch of power systems.
