中国电机工程学报2026，Vol.46Issue(12)：4944-4957,中插10,15.DOI:10.13334/j.0258-8013.pcsee.250276
沙戈荒新能源交直流混合汇集直流外送系统参数设计方法与运行特性分析
Parameter Design Method and Operating Characteristics Analysis of Hybrid AC/DC Collection and DC Transmission System for Renewable Energy of the Desert,Gobi,and Barren Areas
摘要
Abstract
The desert,gobi,and barren areas are one of the main scenarios of renewable energy development in China.To address the challenges of long transmission distance,wide collection ranges and insufficient support for renewable energy in the desert,Gobi,and barren areas,this paper proposes a hybrid AC/DC collection and DC transmission system,which can realize the hybrid integration of multiple renewable energy bases with different locations.Firstly,the topology of the hybrid AC/DC collection and DC transmission system is introduced.Then,the operating mode diagrams are analyzed,and the coordinated control strategy is designed accordingly.Subsequently,the optimal design strategy for the system parameters based on the converter capability limit is presented.Based on the design scheme,the steady-state and transient-state operating characteristics are analyzed.Then,the economic and technical aspect of the proposed topology is investigated.Finally,this paper develops a simulation model of the hybrid AC/DC collection and DC transmission system in PSCAD/EMTDC to verify the applicability and feasibility of the proposed topology and control strategies under start-up conditions,power fluctuations and DC fault.The research results show that the system can be an alternative for large-scale renewable energy transmission in the desert,Gobi,and barren areas.关键词
沙戈荒/二极管整流单元/交直流混合汇集/控制策略Key words
desert,gobi,and barren areas/diode rectifier unit/hybrid AC/DC collection/control strategy分类
信息技术与安全科学引用本文复制引用
底昊天,向往,杨明睿,朱琳,文劲宇..沙戈荒新能源交直流混合汇集直流外送系统参数设计方法与运行特性分析[J].中国电机工程学报,2026,46(12):4944-4957,中插10,15.基金项目
国家电网有限公司科技项目(4000-202358819A-3-8-KJ).Project Supported by Science and Technology Project of State Grid Corporation of China(4000-202358819A-3-8-KJ). （4000-202358819A-3-8-KJ）
