Full
Outline
With the large-scale access of wind turbines with frequency regulation functions to the power system, the influence of frequency regulation control on the transient power angle stability of the system is increasingly prominent. In this paper, an extended two-machine system with a wind turbine connected to the sending end area and a three-phase short-circuit fault at the intermediate node of the tie line is taken as the research background. Aiming at the influence mechanism of the droop control of the wind turbine on the stability of the first swing of the power angle of the system, firstly, based on the equal area rule, the relationship between the speed difference of the synchronous machine and the transient energy of the system is established, and the WDPAS index, including the influence factors such as the output of the wind turbine, the grid-connected position, and the inertia distribution of the system, is proposed to analyze the influence of the droop control of the wind turbine on the speed difference of the synchronous machine. Then, based on the system state of the maximum power point tracking (MPPT) control of the wind turbine, the dynamic changes of the system transient energy during the fault and after the fault clearance are studied. Finally, the first swing stability of the system power angle is evaluated by the maximum offset of the system power angle first pendulum, and an extended two-machine system simulation model is built in the DIgSILENT/PowerFactory simulation software to verify the rationality of the index and the correctness of the conclusion.
138
23
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62662699(Operation and Technical Support)
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
