With increasing the share of renewable energy sources (RESs) in the power systems, the frequency stability becomes a crucial concern. This issue can be handled with some auxiliary frequency controllers which use the kinetic energy of blades of the variable speed wind turbines (VSWTs). This paper focuses on the deficiencies of conventional virtual inertia controller (VIC). Efficiency decrement of VSWT during severe contingencies is one of the main deficiencies of conventional VICs. In this study, its impacts on the performance of conventional VICs are first determined using some sensitivity analyses. An adaptive VIC is then proposed to overcome this issue. The designed VIC controller not only reduces the impacts of VSWT's efficiency decrement on the frequency stability, but also improves the performance of VIC due to its adaptation property. To achieve optimal performance, the parameters of proposed VIC are tuned using a multi objective optimization problem. Some time domain simulations are performed on an IEEE 9-bus test system to investigate the performance of proposed VIC. Results confirm a more reliable operation of the power systems in which the VSWTs are equipped with the proposed VIC.

中文翻译：

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考虑非线性空气动力学效率的双馈双馈自适应虚拟惯性控制器

随着电力系统中可再生能源（RES）的份额增加，频率稳定性成为至关重要的问题。此问题可以通过使用一些辅助频率控制器来解决，这些辅助频率控制器使用变速风力涡轮机（VSWT）的叶片动能。本文着重介绍了传统虚拟惯性控制器（VIC）的不足。严重突发事件期间VSWT的效率降低是常规VIC的主要缺陷之一。在这项研究中，首先使用一些敏感性分析确定了其对常规VIC性能的影响。然后提出了一种自适应VIC来克服这个问题。设计的VIC控制器不仅减少了VSWT效率降低对频率稳定性的影响，而且由于其自适应特性，还提高了VIC的性能。为了获得最佳性能，使用多目标优化问题对建议的VIC的参数进行了调整。在IEEE 9总线测试系统上进行了一些时域仿真，以研究建议的VIC的性能。结果证实了其中装有拟议的VIC的VSWT的电力系统的运行更加可靠。