柔性直流输电紧急功率支援控制策略研究

Study on the Control Strategy of Flexible DC TransmissionEmergency Power support

为了有效解决交流侧系统发生故障时出现的过流问题,以及提高换流器的低压穿越能力,本文重点提出了柔性直流输电紧急功率支援和控制方法。当系统网侧产生对称或者是不对称故障时,可以直接使用数字仿真技术来分析换流器内部的电能质量,以此来提高换流器的低压穿越能力。

In order to effectively solve the overcurrent problem in the environment of the AC side system failure problem and improve the low voltage ride-through capability of the converter during the working process,the emergency power support and control method for flexible DC transmission is proposed.When the symmetry or asymmetric fault problem occurs on the system network side,digital simulation technology can be directly used to analyze the power quality inside the converter,so as to improve the working ability of the converter during the low-voltage traversal process.