Reliability Improvement Method of Flexible AC/DC Power   Grid Based on Sensitivity Analysis

doi:10.3969/j.issn.1000-7229.2018.02.008

Abstract

Abstract: ABSTRACT： Flexible AC and DC power grid can achieve active power and reactive power independent control, and has been used in the remote distance and large capacity transmission, renewable energy incorporation and energy internet design, which is an important development trend of the future power grid. Aimed at the lack of quantitative evaluation of flexible AC/DC reliability and the lack of research on the reliability improvement method of flexible AC/DC power grid, this paper proposes a sensibility analysis based method to improve the reliability of the flexible AC/DC power grid. This method firstly calculates the reliability indices of AC/DC system under different operation modes of flexible AC/DC power grid, and then finds out the vulnerable parts of the power grid through the sensitivity analysis of reliability index. Furthermore, the reliability sensibility of the vulnerable part is calculated, and the reliability improvement method is put forward combined with the cost analysis. Finally, a case study of the Zhangbei flexible AC/DC project is carried out to prove the effectiveness of the method.

Key words: KEYWORDS： power system, flexible AC/DC hybrid power grid, sensibility, reliability

CLC Number:

TM 72

LIU Manjun1, JIANG Yi1, LUO Jinshan2, LIU Dong2, CHENG Lin1 . Reliability Improvement Method of Flexible AC/DC Power Grid Based on Sensitivity Analysis

[J]. Electric Power Construction, 2018, 39(2): 58-.

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Reliability Improvement Method of Flexible AC/DC Power Grid Based on Sensitivity Analysis

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