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Inertia Estimation of Power Grid with VSC-MTDC System

机译：VSC-MTDC系统电网惯性估计

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The increase of renewable energy generations and HVDC links with low or zero inertia will affect the dynamic behavior of power systems and stability margins. The inertia characteristics of power system is a critical factor for the analysis of the system dynamic stability when subjected to disturbances. To meet the increasing integration level of the renewable energy resources in the future, this paper proposes an inertia estimation algorithm to analyze both the regional and global inertia characteristics of power systems. It is found that the inertia estimation results are highly related to several factors, such as the grid structure, the inertia time constant of synchronous generators and the grid-interface location of the electronics, which also reveal the impact of a multi-terminal DC (MTDC) system connection. The effectiveness of the proposed method is verified and demonstrated for three networks by the simulations in the DigSILENT/PowerFactory environment.
机译：具有低或零惯性的可再生能源代和HVDC链路的增加将影响电力系统和稳定性边缘的动态行为。电力系统的惯性特性是在受扰动时分析系统动态稳定性的关键因素。为了满足未来可再生能源资源的越来越多的整合水平，本文提出了一种惯性估计算法来分析电力系统的区域和全球惯性特征。发现惯性估计结果与若干因素有高度相关，例如网格结构，同步发电机的惯性时间常数和电子器件的网格接口位置，这也揭示了多终端DC的影响（ MTDC）系统连接。通过DigSilent / PowerFactory环境中的模拟验证并验证了所提出的方法的有效性并对三个网络进行了证明。

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