论文润色近年来光伏、风电等新能源在电网中的渗透率不断提高导致电力系统呈现出低阻尼和低惯量特性严重影响了电力系统的安全稳定运行。根据并网的方式不同并网变流器可以分为跟网型和构网型两种方式。跟网型变流器通过锁相环跟踪电网的相位和频率在故障期间可向电网注入指定的有功电流和无功电流。随着电网强度的降低跟网型变流器无法准确的追踪电网信息容易发生暂态失稳。因此构网型变流器得到了众多学者的广泛关注。构网型变流器

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这些文献主要围绕在电网电压不对称短路故障下，如何提高构网型变流器系统的低电压穿越能力以及并网电能质量进行研究。通过改进控制策略、引入新的控制方法等手段，提高了构网型变流器在故障期间的稳定性和可靠性。这些研究结果对于提高电力系统的安全稳定运行具有重要意义。