A Preventive Control Strategy of Embedded VSC HVDC in a Large-Scale Meshed Power System

Jaehyeong Lee, Sungchul Hwang, Soseul Jung, Gilsoo Jang, Seungmin Jung, Minhan Yoon

Research output: Chapter in Book/Report/Conference proceedingChapter


When VSC HVDC is applied to the meshed power system, if the appropriate operating point is not determined, it is adversely affected to the total power system. To avoid the side effects of HVDC operation, this paper proposes a method to determine the proper operating point of VSC HVDC. Especially, the control of the VSC HVDC can be a burden for the system operator. In order to alleviate this burden, preventive control should be applied to reduce the burden on system operators. The danger of overloading of the AC line is predicted in advance, so that the operating point at which overload does not occur after an accident is determined as the operating point of VSC HVDC. The typical conventional VSC HVDC control methods are constant active/reactive power control and remedial action scheme. In the former case, there is no control after the contingency, which can cause AC overload or overvoltage problems. The latter controls the operating point for system reliability, but it can be a burden for the system operator and can cause problems in the system in case of communication failure. On the other hand, when applying the preventive control, it is possible to determine an operating range in which the AC load and the overvoltage do not occur even after N − 1 contingency in the operating range of VSC HVDC. In addition, in this paper, we proposed an operating point that minimizes the system’s total losses in the area. The proposed control strategy can reduce the burden on the VSC HVDC operation and can also provide economic benefits by reducing losses. This will be one of the VSC HVDC operation plans that can be selected by the system operator in the future.

Original languageEnglish
Title of host publicationGreen Energy and Technology
PublisherSpringer Science and Business Media Deutschland GmbH
Number of pages10
Publication statusPublished - 2020

Publication series

NameGreen Energy and Technology
ISSN (Print)1865-3529
ISSN (Electronic)1865-3537

Bibliographical note

Funding Information:
Acknowledgements This research was supported by Korea Electric Power Corporation (R18XA06-62) and National Research Foundation Grant (No. 2017R1C1B5018073) funded by the Korean government.

Publisher Copyright:
© 2020, Springer Nature Singapore Pte Ltd.


  • Embedded VSC HVDC
  • HVDC operation
  • Preventive control
  • System loss minimization

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Industrial and Manufacturing Engineering
  • Management, Monitoring, Policy and Law


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