arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2212.03053eess.SYcs.SY
收藏

构网型电压源换流器的控制:自适应快/慢内部电压源视角

Control of Grid-Forming VSCs: A Perspective of Adaptive Fast/Slow Internal Voltage Source

Heng Wu, Xiongfei Wang

AI总结:

针对GFM-VSC在大扰动下同步稳定与构网服务对内部电压源动态的矛盾需求,提出自适应快/慢IVS控制以兼顾暂态稳定性、GFM能力及鲁棒性。

摘要:

构网(GFM)能力要求正越来越多地施加于并网电压源换流器(VSC)。在大电网扰动下,GFM-VSC需要在提供GFM服务的同时保持稳定。然而,正如本文所指出的,这些目标固有地导致对GFM-VSC内部电压源(IVS)动态的相互冲突要求:需要快速IVS动态以避免与电网失去同步,而维持GFM能力则更倾向于缓慢IVS动态。为应对这一挑战,本文提出一种自适应快/慢IVS控制,根据系统需要在快速与缓慢IVS动态之间切换GFM-VSC。所提方法增强了GFM-VSC的暂态稳定性,同时最大化其提供GFM服务的能力。此外,该方法对不同电网强度和不同类型电网扰动具有鲁棒性。实验结果验证了理论发现以及所提控制方法的有效性。

英文摘要:

Grid-forming (GFM) capability requirements are increasingly imposed on grid-connected voltage-source converters (VSCs). Under large grid disturbances, GFM-VSCs need to remain stable while providing GFM services. Yet, such objectives, as pointed out in this paper, inherently lead to conflicting requirements on the dynamics of internal voltage source (IVS) of GFM-VSCs, i.e., the fast IVS dynamics is needed to avoid the loss of synchronism with the grid, whereas the slow IVS dynamics is preferred for maintaining GFM capability. To tackle this challenge, an adaptive fast/slow IVS control is proposed, which switches GFM-VSC between fast and slow IVS dynamics based on system needs. The proposed method enhances the transient stability of GFM-VSC, whilst maximizing its capability of providing GFM service. Further, the approach is robust to different grid strengths and different types of grid disturbances. The experimental results verify the theoretical findings and the effectiveness of the proposed control method.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑