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高渗透率下分布式发电系统所带来的能量流波动是中低压配电网中引起电压质量问题的根本原因。通过逆变型微源注入有功功率调整电压,可以有效改善配电网电压质量的问题。针对分布式发电系统中的逆变型微源进行了建模分析,研究了非对称负载情况下采用对称分量法的控制策略,并进行了仿真分析和实验验证。结果表明,所提出的控制策略控制效果理想,能够明显改善配电网的电压质量。
Fluctuations in energy flow caused by distributed generation systems under high permeability are the root causes of voltage quality problems in low and medium voltage distribution networks. Inverted micro-source injection of active power adjustment voltage, can effectively improve the distribution network voltage quality issues. In this paper, the modeling and analysis of inverting micro-sources in distributed generation system are studied. The control strategy using symmetrical component method under asymmetric load is studied, and the simulation analysis and experimental verification are carried out. The results show that the proposed control strategy has good control effect and can obviously improve the voltage quality of distribution network.