单频电源平抑风电输出功率优化控制方法

Optimal Control Method for Wind Power Output Power Stabilization of Single-frequency Power Supply

随着电力电子装置应用日益广泛,其产生的大量谐波会导致输出功率降低和电网污染,其中以单频电源最为严重。为解决这一问题,提出一种基于制氢系统的单频电源平抑风电输出功率方法。建立以电解槽开关操作和运行状态为变量的0-1整数规划模型,实现电解槽平抑电源功率波动的优化控制。根据电解槽系统的运行特点,适当调整优先级约束条件,采用隐枚举法进行求解,通过仿真分析验证所提方法的有效性。仿真实验结果表明:采用该方法调节后可有效改善输出电流,输出功率因数达到0.98以上,可得到稳定输出电压且能实现输出电压宽范围调节。

With the increasing application of power electronic devices,a large number of harmonics generated by them will lead to the reduction of output power and grid pollution,of which the single-frequency power supply is the most serious.To solve this problem,a single-frequency power supply based on a hydrogen generation system is proposed to stabilize the wind power output power.A 0-1 integer programming model is established,which takes the switching operation and operation status of an electrolyte as variables to realize the optimal control of the electrolyte to suppress the power fluctuation of the power supply.According to the operation characteristics of the electrolyte system,the priority constraints are adjusted appropriately,and an implicit enumeration method is used to solve the problem.The efiectiveness of the proposed method is verified by simulation analysis.Simulation results show that the output current can be effectively improved by using the proposed method,and the output power factor can reach more than 0.98.As a result,a stable output voltage can be obtained and the output voltage can be adjusted in a wide range.