分布式电源参与的配电网电能质量控制策略研究

发布时间：2018-08-31 08:05

【摘要】：考虑到并网逆变器与有源电力滤波器在拓扑结构、使用功能以及控制方法上的相似性,提出了一种将并网发电与电力有源滤波相结合的统一控制策略。在详细分析统一控制系统结构与工作原理的基础上,从谐波与无功电流检测、电压与电流控制等方面进行分析设计,实现了在dq旋转坐标系下对系统的统一控制。该控制策略使并网逆变器在并网发电的同时也能进行谐波抑制与无功补偿,不仅充分发挥了分布式发电的优越性,而且改善了电网的电能质量。最后通过仿真验证了该控制策略的有效性与可行性。
[Abstract]:Considering the similarity of topology, function and control method between grid-connected inverter and active power filter, a unified control strategy combining grid-connected power generation with active power filter is proposed. Based on the detailed analysis of the structure and working principle of the unified control system, this paper analyzes and designs the harmonic and reactive current detection, voltage and current control, and realizes the unified control of the system in the dq rotating coordinate system. The control strategy enables the grid-connected inverter to perform harmonic suppression and reactive power compensation in addition to grid-connected generation. This strategy not only gives full play to the advantages of distributed generation, but also improves the power quality of the power network. Finally, the effectiveness and feasibility of the control strategy are verified by simulation.
【作者单位】：辽宁工程技术大学;许继集团有限公司;
【分类号】：TM761

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