A Robust Synchronization to Enhance the Power Quality of Renewable Energy Systems
A Robust Synchronization to Enhance the Power Quality of Renewable Energy Systems
复制标题
DOI：
10.1109/tie.2015.2397871
复制
发表时间：
2015-02
影响因子：
7.7
通讯作者：
L. Hadjidemetriou;E. Kyriakides;F. Blaabjerg
中科院分区：
文献类型：
--
作者：
L. Hadjidemetriou;E. Kyriakides;F. Blaabjerg
随着可再生能源在电网中的渗透率不断提高，需要在各种电网条件下提供高质量的电力注入。的同步方法，通常是锁相环（PLL）算法，直接影响的响应的网侧转换器的RES。本文提出了一种新的PLL算法，使用先进的解耦网络实现在固定的参考框架与有限的要求，处理时间，使一个快速，准确的同步，即使在谐波失真的电压和低电压电网故障。验证了锁相环的鲁棒响应，并研究了锁相环同步对并网可再生能源系统性能的影响。这项研究证明，新的PLL的鲁棒性，准确性和动态响应可以提高从RES注入的功率的质量，也可以使一个适当的故障穿越操作下谐波失真的电压和电网故障。
The increasing penetration of renewable energy sources (RESs) in the power grid requires high-quality power injection under various grid conditions. The synchronization method, usually a phase-locked loop (PLL) algorithm, is directly affecting the response of the grid-side converter of the RES. This paper proposes a new PLL algorithm that uses an advanced decoupling network implemented in the stationary reference frame with limited requirements for processing time to enable a fast and accurate synchronization even under harmonic distorted voltage and low-voltage grid faults. The robust response of the proposed PLL is validated, and the effect of the proposed synchronization on the performance of the grid-connected renewable energy system is investigated. This investigation proves that the robust, accurate, and dynamic response of the new PLL can enhance the quality of the injected power from the RES and can also enable an appropriate fault-ride-through operation under harmonic distorted voltage and grid faults.