Implementing Inertial Control for PMSG-WTG in Region 2 using Virtual Synchronous Generator with Multiple Virtual Rotating Masses
Implementing Inertial Control for PMSG-WTG in Region 2 using Virtual Synchronous Generator with Multiple Virtual Rotating Masses
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DOI：
10.1109/pesgm40551.2019.8973788
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发表时间：
2019-08
期刊：
影响因子：
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通讯作者：
Weihang Yan;W. Gao;Wenzhong Gao;V. Gevorgian
中科院分区：
文献类型：
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作者：
Weihang Yan;W. Gao;Wenzhong Gao;V. Gevorgian
随着可再生能源的日益整合，与电网频率分布恶化和潜在的电力系统不稳定相关的问题变得更加重要。本文以四型永磁同步发电机（PMSG）-风力涡轮机发电机（WTG）为研究对象，实现了基于虚拟同步发电机（VSG）的惯性控制算法。建立了基于VSG的PMSG-WTG的非线性动态模型，并对其进行了小信号线性化分析。不可避免地，VSG的直接应用引入了大惯性，这导致可用风力功率的快速变化与具有缓慢动态的逆变器控制之间的冲突，特别是在风力涡轮机的区域2中。针对这一问题，提出了多虚拟旋转质量的VSG，以提高有功功率跟踪性能，同时提高VSG的惯性控制。在一个改进的10 MVA IEEE 14节点微电网系统中验证了惯性响应。仿真结果的评估表明VSG在可再生能源发电机组上的适用性。
With the increasing integration of renewable energy, the problems associated with deteriorating grid frequency profile and potential power system instability have become more significant. In this paper, the inertial control algorithm using Virtual Synchronous Generator (VSG) is implemented on type-4 Permanent Magnet Synchronous Generator (PMSG) - wind turbine generator (WTG). The overall nonlinear dynamic model and its small-signal linearization of PMSG-WTG using VSG is established and comprehensively analyzed. Inevitably, the direct application of VSG introduces large inertia which causes conflict between the fast-varying of available wind power and inverter control with slow dynamics, particularly in region 2 of wind turbine. Aiming to address such issue, VSG with multiple virtual rotating masses is proposed in order to improve the active power tracking performance as well as to boost inertial control of a VSG. The inertial responses are verified in a modified 10MVA IEEE 14 bus microgrid system. The assessment of the simulation results demonstrates the applicability of VSG on renewable energy generation units.