A Comprehensive Evaluation Method and Strengthening Measures for AC/DC Hybrid Power Grids

Junli Zhang, Guoteng Wang, Zheng Xu and Zheren Zhang
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Junli Zhang: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
Guoteng Wang: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
Zheng Xu: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
Zheren Zhang: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China

Energies, 2022, vol. 15, issue 12, 1-20

Abstract: Due to the complex operation characteristics of AC/DC hybrid power grids, it is a great challenge to comprehensively evaluate their stability and formulate appropriate strengthening schemes for them. To address this challenge, the following studies are carried out in this paper. First, an evaluation system including six indicators is established for AC/DC hybrid power grids. Next, aiming at the problems that may be revealed by the comprehensive evaluation, strengthening measures that can be utilized are introduced. Then, a comprehensive evaluation method for AC/DC hybrid power grids and their potential strengthening schemes is proposed. This method can deal with three issues, including normalization of the indicators, weighting of the indicators, and the trade-off of technology and cost. Finally, in the case study of the Qujing Power Grid, the main problems faced by regional power grids are pointed out, and four feasible strengthening schemes are formulated and evaluated.

Keywords: AC/DC hybrid power grid; evaluation indicator; strengthening measure; weighting method; trade-off of technology and cost (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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