电网技术2017，Vol.41Issue(4)：1098-1105,8.DOI:10.13335/j.1000-3673.pst.2016.2503
特高压交流和直流输电系统可靠性与经济性比较
Comparison of Reliability and Economy Between UHVAC and UHVDC Transmission Systems
摘要
Abstract
This paper focuses on quantitative analysis and comparison of reliability and economy between UHVAC and UHVDC transmission systems.Firstly,UHVAC and UHVDC are divided into different subsystems respectively.Based on state enumeration method,reliability evaluation model for each subsystem is built considering influence of standby components,etc.Then,multi-state reliability evaluation models for UHVAC and UHVDC are formed by combining failure logic relationships among subsystems with state enumeration method.Economy assessment model for both systems is built considering investment,operation and maintenance,transmission losses and interruption costs.Finally,a case study is conducted to analyze and compare reliability and economy of the two systems.Results show that forced energy unavailability index of UHVAC is less than that of UHVDC in the same transmission distance.Equivalent outage frequency of UHVAC is more than that of UHVDC when transmission distance exceeds 1300 km.In case of interruption cost ignored,UHVAC economy is better than that of UHVDC when transmission distance is less than 1300 km,otherwise UHVDC is better.In a reasonable range of transmission distance,UHVAC is more economical than UHVDC with interruption cost included.关键词
特高压/直流输电/可靠性/经济性/停电损失费用/比较Key words
UHV/HVDC/reliability/economy/interruption cost/comparison分类
信息技术与安全科学引用本文复制引用
彭吕斌,何剑,谢开贵,汤涌,胡博,易俊,李江山,贺庆..特高压交流和直流输电系统可靠性与经济性比较[J].电网技术,2017,41(4):1098-1105,8.基金项目
国家电网公司科技项目(XT71-15-001)(电网发展新形势下安全分析与保护基础技术研究) （XT71-15-001）
重庆市研究生科研创新项目(CYB15035).Project Supported by Science and Technology Project of SGCC:Basic Technology Research of Power Grid Security Analysis and Protection under New Development Situation (XT71-15-001) （CYB15035）
Chongqing University Postgraduates' Innovation Project (CYB15035). （CYB15035）
