电力系统及其自动化学报2025，Vol.37Issue(2)：20-28,9.DOI:10.19635/j.cnki.csu-epsa.001434
风电占比提高对电网接地距离保护Ⅱ段整定全局影响分析
Analysis of Global Impact of Increasing Wind Power Proportion on Setting of Power Grid Second-zone Grounding Distance Protection
摘要
Abstract
To study the impact of changes in short-circuit current distribution with increasing the wind power proportion on the operation rules for conventional power systems from the perspective of the relationship between wind power and power gird,the setting of second-zone grounding distance protection is taken as an example in this paper.First,with the combination of the current-limiting characteristics of wind turbines and relay protection setting rules,the impact of increasing the wind power proportion on the coordination of line settings is analyzed.Second,an index reflecting the risk of line mismatch,i.e.,mismatch coefficient,is defined,through which the factors affecting the line mismatch are analyzed.Finally,the mismatch coefficient of lines in Guangdong Power Grid is calculated,and the relationship be-tween the affected areas,network structures and wind power integration is analyzed.The global impact of increasing the wind power proportion on the actual grid setting is studied,and solutions to line mismatch are proposed from the per-spective of improving the power output combination.关键词
短路电流/继电保护/接地距离保护Ⅱ段/风电/失配系数Key words
short-circuit current/relay protection/second-zone grounding distance protection/wind power/mismatch coefficient分类
信息技术与安全科学引用本文复制引用
谢钰,武志刚..风电占比提高对电网接地距离保护Ⅱ段整定全局影响分析[J].电力系统及其自动化学报,2025,37(2):20-28,9.基金项目
南方电网有限责任公司科技项目(GDKJXM20220147). （GDKJXM20220147）
