Impact of Multi-terminal HVDC Grids on Enhancing Dynamic Power Transfer Capability
Impact of Multi-terminal HVDC Grids on Enhancing Dynamic Power Transfer Capability
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DOI：
10.1109/tpwrs.2016.2617399
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发表时间：
2017-07
影响因子：
6.6
通讯作者：
T. Assis;S. Kuenzel;B. Pal
中科院分区：
文献类型：
--
作者：
T. Assis;S. Kuenzel;B. Pal
为了提高电力系统的输电能力，本文提出了开发多端高压直流电网的设想。基于电压源型换流器的多端高压直流输电系统(VSC-MTDC)被认为是风电并网的一种很有前途的选择。在低风情况下，这些原本专用于风电传输的电网可以被用作额外的区域间传输路径，提供额外的动态安全性。本文的重点是小干扰稳定性评估，特别是在与区域间模式相关的衰减较差的振荡情况下。通过通用计算框架进行的仿真表明，由电压型换流器提供的高水平的灵活性和可控性可以显著提高传输容量，同时保持足够的动态性能。
This paper proposes the exploitation of multiterminal HVDC grids to improve transfer capability in power systems. Multiterminal HVDC systems based on voltage source converters (VSC-MTDC) have been recognized as a promising alternative for the wind power integration. Under low wind scenarios, these grids originally dedicated for wind power transmission can be exploited as an additional interarea transmission path, providing extra dynamic security. The paper focuses on small-signal stability assessment, especially in poor damped oscillations associated with interarea modes. Simulations performed through a generic computational framework have shown that the high level of flexibility and controllability provided by voltage source converters can considerably improve the transfer capacity, while preserving adequate dynamic performance.