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微电网中虚拟振荡器控制的参数优化方法

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虚拟振荡器控制(Virtual Oscillator Control,VOC)方法允许连接到微电网的数台变流器在没有通信的情况下自然同步,然而VOC参数的选择通常需要进行迭代或优化,这使其难以在实际中得到广泛的应用.对此,提出一种基于描述函数法确定死区振荡器参数的方法,将变流器和微电网的电气参数作为输入数据,用于计算电压型变流器所需的参数.仿真结果表明,该方法可减少谐波的产生,也能缩短设备间的同步时间,同时预同步能确保在运行微电网中切入第二台变流器所产生的瞬态是平滑的.
Parameter Optimization Method for Virtual Oscillator Control in Microgrids
Virtual Oscillator Control(VOC)method allows several power conversion systems connected to a microgrid to synchronize naturally without communication.However,the selection of VOC parameters often requires iteration or opti-mization,which obstructs its practical application.This work thereby studied a method of calculating the parameters re-quired for a voltage source power conversion system which uses the descriptive function to determine the parameters of a dead zone oscillator and utilizes the electrical parameters of the power conversion system and the microgrid as input data.The method was indicated,by simulation,capable of reducing the generation of harmonics and the synchronization time consumption between devices under rationally determined parameters,and moreover,ensuring via pre-synchronization smooth transient generated by switch to the second power conversion system in the operating microgrid.

virtual oscillator controlparameter optimizationenergy storage converterpresynchronization

龚芬

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湖南工程职业技术学院,湖南 长沙 410151

虚拟振荡器控制 参数优化 储能变流器 预同步

2024

电工技术
重庆西南信息有限公司(原科技部西南信息中心)

电工技术

影响因子:0.177
ISSN:1002-1388
年,卷(期):2024.(18)