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.
Subject
Energy (miscellaneous),Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment,Electrical and Electronic Engineering,Control and Optimization,Engineering (miscellaneous),Building and Construction
Reference30 articles.
1. The 14th Five Year Plan for National Economic and Social Development of the People’s Republic of China and the Outline of Long-Term Objectives for 2035,2021
2. Characteristic analysis and operational control of large-scale hybrid UHV AC/DC power grids;Li;Power Syst. Technol.,2016
3. Method of calculating the maximum transmission capability with unified power flow controller;Liu;J. Eng.,2017
4. Review of hybrid HVDC systems combining line communicated converter and voltage source converter
5. Confronting problem and challenge of large scale AC-DC hybrid power grid operation;Dong;Proc. CSEE,2019