摘要
为解决异同步控制过程中谐波含量高、直流电压回归稳态时间长的问题,提出基于MMC的多端柔性直流输电系统异同步自动控制。建立输电系统数学模型,描述多端柔性直流输电系统运行状态,利用MMC调节输电系统功率,完成不同状态下交流与直流异同步的输电方式,实现基于MMC的多端柔性直流输电系统异同步自动控制。实验证明,设计方法应用下输电系统谐波含量均下降至5%,系统直流电压回归稳态时间最快为0.36 s,具有良好的控制效果。
To solve the problems of high harmonic content and long time for DC voltage to return to steady state during asynchronous control,a multi-terminal flexible DC transmission system asynchronous automatic control based on MMC is proposed.Establish a mathematical model of the transmission system,describe the operating status of the multi-terminal flexible DC transmission system,use MMC to regulate the power of the transmission system,and complete the asynchronous transmission mode of AC and DC under different states,realizing the asynchronous automatic control of the multi-terminal flexible DC transmission system based on MMC.Experimental results have shown that under the application of the design method,the harmonic content of the transmission system is reduced to 5%,and the fastest time for the system's DC voltage to return to steady state is 0.36 s,demonstrating good control performance.
作者
王喜柱
WANG Xizhu(Jinzhong Vocational and Technical College,Jinzhong,Shanxi 030600,China)
出处
《自动化应用》
2024年第13期257-259,共3页
Automation Application
