Construction of Power Supply Stability Control Model for Wind Connected Power Grid

被引：0
作者：
Xue X. [1 ]
Zheng Y. [2 ,3 ]
Lu C. [4 ]
机构：
[1] School of Information Engineering, Nanyang Institute of Technology, Henan, Nanyang
[2] College of Mechanical and Electronic Engineering, Nanyang Normal University, Henan, Nanyang
[3] Qinghai Wandong Ecological Environment Development Co. Ltd., Geermu, Qinghai
[4] Nanyang Zehui Technology Co. Ltd., Henan, Nanyang
来源：
Distributed Generation and Alternative Energy Journal | 2022年 / 37卷 / 06期
关键词：
control model; mechanical torque; nonlinear objective function; power supply; pv curve; stability; Wind power connected to power grid;
D O I：
10.13052/dgaej2156-3306.3767
中图分类号：
学科分类号：
摘要：
There are many problems in the power supply stability control of wind power generation system, such as large fluctuations, poor control effect and so on. Therefore, a new stability control model of wind power grid connected is designed. Determine the DC grid connection mode when the wind farm is connected, convert the DC power into AC power through the converter station, and transmit it to the final AC system to realize the grid connection of wind power and power grid; According to the determined wind power access mode, calculate the mechanical operation power, mechanical torque and wind energy utilization coefficient collected by the wind turbine, complete the best collection of wind energy, and determine the shafting according to the mass block model of the wind turbine and generator, so as to realize the research on the mathematical model of wind power generation. By analyzing the power flow direction of the stator and rotor of the wind turbine generator set, the unstable state of the power supply voltage of the wind turbine generator set after grid connection is determined. The PV curve method is used to calculate the steady-state voltage stability of grid connected wind turbines, and a power supply stability control model based on the voltage stability of grid connected wind turbines is established. The nonlinear objective function method is used to optimize the critical point of power supply stability, calculate the maximum load and maximum power of the system, establish the static power supply and transient power supply stability model after wind power grid connection, and realize the power supply stability control research of grid connected wind power through the analysis of power supply characteristics. The experimental results show that the model is closer to the stability of the actual power supply in the test of improving the stability of the power supply, ensuring the quality of power supply, while the test results of the other two methods have large fluctuations. In the analysis of the change of power supply after grid connection, the experimental results obtained by the model are very close to the actual data values. Therefore, this method can effectively improve the performance of power system. © 2022 River Publishers.
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页码：1873 / 1890
页数：17
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