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首页> 外文期刊>Smart Grid, IEEE Transactions on >Droop-Free Distributed Control for AC Microgrids With Precisely Regulated Voltage Variance and Admissible Voltage Profile Guarantees
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Droop-Free Distributed Control for AC Microgrids With Precisely Regulated Voltage Variance and Admissible Voltage Profile Guarantees

机译：具有精确调节电压方差和可允许电压曲线保证的AC微电网的下垂分布式控制

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摘要

In this paper, we propose a droop-free distributed cooperative control with precisely regulated voltage variance and admissible voltage profile guarantees for AC microgrids. First a distributed voltage variance observer is proposed and proven to be able to converge to global voltage variance using only local measurements and information from neighboring distributed generators (DGs). A droop-free distributed control with average voltage regulator, voltage variance regulator, and relaxed reactive power regulator is then designed and shown to be able to achieve the regulation of average voltage and voltage variance and relaxed reactive power sharing in steady-state. For relaxed reactive power sharing, one special DG that could be a community-owned or utility-owned DG will not participate in reactive power sharing and this flexibility is utilized to regulate the voltage profile. The small-signal stability of the system with the proposed control is evaluated by measurement-based Prony analysis, which can also guide the control parameter selection. It is also shown that the steady-state solution of the proposed control can be obtained by solving a set of nonlinear equations, which allows more efficient evaluation of the control performance under different operating conditions and various controller settings. To validate the performance of the proposed control, extensive real-time simulation studies are performed in OPAL-RT on a four-DG test microgrid.
机译：在本文中，我们提出了一种免费的分布式协作控制，具有精确调节的电压方差和可允许的电压曲线为AC微电网提供保证。首先，提出了一种分布式电压方差观察者，并证明能够使用来自相邻分布式发电机（DGS）的本地测量和信息来汇聚到全局电压方差。然后，设计并示出了具有平均电压调节器，电压方差调节器和宽松无功功率调节器的下垂的分布式控制，并显示能够实现平均电压和电压方差和稳态的轻松无功功率共享的调节。对于轻松的无功，可以成为社区所有或公用事业的DG的一个特殊DG将不会参与无功功率共享，并且这种灵活性用于调节电压曲线。通过基于测量的Proy分析评估了具有所提出的控制的系统的小信号稳定性，也可以指导控制参数选择。还示出了通过求解一组非线性方程可以获得所提出的控制的稳态解决方案，这允许在不同的操作条件下更有效地评估控制性能和各种控制器设置。为了验证所提出的控制的性能，在四-DG测试微电网上的OPAL-RT中进行了广泛的实时模拟研究。

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