Frequency optimization strategy of wind storage in power system
Konferenz: MEMAT 2022 - 2nd International Conference on Mechanical Engineering, Intelligent Manufacturing and Automation Technology
07.01.2022 - 09.01.2022 in Guilin, China
Tagungsband: MEMAT 2022
Seiten: 4Sprache: EnglischTyp: PDF
Autoren:
Bi, Jingyu; Mi, Gensuo; Niu, Jianfei (College of Automatic and Electrical Engineering, Lanzhou Jiaotong University, Lanzhou, China)
Gao, Lei (State Grid Gansu Electric Power Company Lanzhou Power Supply Company, Lanzhou, China)
Wang, Yankuai (College of Railway Technology, Lanzhou Jiaotong University, Lanzhou, China)
Inhalt:
In the power system, due to the random variability of the power supply and the load, the frequency fluctuation problem is caused. In order to improve the stability of the frequency, a multi-scale frequency modulation optimization strategy for wind turbines and energy storage is proposed. The strategy is in the frequency modulation process, Divided into decomposition layer and control layer, each layer is related to each other. In the decomposition layer, based on the Discrete Fourier Transform (DFT), the differential active power is decomposed. In the control layer, the frequency modulation characteristics and reserve capacity of wind turbines under different wind speeds are considered comprehensively, and the state of charge (SoC) of energy storage is achieved to achieve wind power. For the purpose of frequency modulation optimization of the grid-connected energy storage unit and energy storage system, simulation shows that based on the wind-storage joint frequency modulation strategy, the frequency fluctuation of the power system can be effectively improved, and the grid-connected efficiency of wind turbines can be improved.