Open AccessAnalysis and assessment standards of power stability of multi‐send HVDC systems
Author(s) -
Xu Zheling,
Xu Zheng,
Xiao Liang
Publication year - 2019
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2018.8398
Subject(s) - electric power system , stability (learning theory) , grid , power grid , power (physics) , computer science , high voltage direct current , reliability engineering , electrical engineering , voltage , engineering , direct current , mathematics , physics , geometry , quantum mechanics , machine learning
The asynchronously interconnected Yunnan Power Grid is a typical multi‐send HVDC system. So far, research on systems with multiple high voltage direct current (HVDC) links is mainly focused on multi‐infeed HVDC systems, and the assessment standards for power stability of multi‐send HVDC systems have not been discussed yet. In this study, firstly the quasi‐steady‐state model of a two‐send HVDC system is built and an analysis of power stability based on the maximum power curve is given. Secondly, the relationships between power stability and two indices (Multi‐infeed Effective Short‐circuit Ratio and the Multi‐infeed Interaction Factor) are discussed. Lastly, the assessment standards for power stability of multi‐send HVDC systems are proposed and a case study of Yunnan Power Grid is presented, which may provide useful instructions for the planning process of multi‐send HVDC systems.