Nonlinear Theory and Its Applications, IEICE
Online ISSN : 2185-4106
ISSN-L : 2185-4106
Regular Section
Load margin for short-term voltage stability of an interconnected AC/MTDC system
Naoki KawamotoYoshihiko SusukiSalvatore D'ArcoAtsushi IshigameDenis MendeDavid Sebastian Stock
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2021 Volume 12 Issue 4 Pages 711-717


The so-called short-term voltage stability is typical of nonlinear problems arising in dynamic performance of electric power systems. This paper reports a simulation result on load margin for short-term voltage stability of the IEEE 9-bus system connected to a multi-terminal DC system based on voltage-source converter (VSC). The simulation shows that the introduction of AC voltage control in VSC increases the load margin under a step change in load on the AC system, thereby showing a clear benefit of the AC voltage control for enhancing the short-term voltage stability without harnessing the AC system.

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© 2021 The Institute of Electronics, Information and Communication Engineers
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