浙江电力2025，Vol.44Issue(4)：1-10,10.DOI:10.19585/j.zjdl.202504001
分址建设特高压直流系统保护优化方案
An optimal protection scheme for spatially distributed UHVDC transmission systems
摘要
Abstract
Spatially distributed UHVDC transmission systems eliminate the need for AC transmission lines converg-ing at a converter station by enabling DC power transmission at remote locations.However,this change in topology introduces new challenges for DC protection.To address protection failure in the operating station after faults occur in the bipolar neutral bus area and grounding electrode line area of low-end nonoperational station,improved protec-tion criteria are proposed based on theoretical analysis and simulation tests.Additionally,the shortcomings of exist-ing fault isolation measures for grounding faults on the low-voltage side of the DC filter at the high-end terminal are analyzed,and a fault isolation scheme for the DC filter is proposed.Finally,the characteristics of differential protec-tion in the DC field are examined,and optimal protection criteria are introduced and validated using real-time digi-tal simulation(RTDS)system.关键词
特高压直流/直流保护/分址建设/接地极引线接地故障/直流滤波器接地故障/差动保护Key words
UHVDC/DC protection/spatially distributed/fault of grounding electrode lines/grounding fault of DC filter/differential protection引用本文复制引用
胡云鹏,唐俊,张建锋,张宜永,张靖,王俊生..分址建设特高压直流系统保护优化方案[J].浙江电力,2025,44(4):1-10,10.基金项目
国家电网有限公司科技项目(5500-202426160A-1-1-ZN) （5500-202426160A-1-1-ZN）
