宁夏电力Issue(5)：12-18,7.DOI:10.3969/j.issn.1672-3643.2025.05.002
提升多场站短路比的新能源接入优化与支撑设备配置研究
Optimization of renewable energy integration and supporting device configuration for enhancing MRSCR
摘要
Abstract
The integration of large-scale renewable energy bases in desert-gobi regions into power grids via split-win-ding transformers often suffers from insufficient multiple renewable energy stations short-circuit ratio(MRSCR).Traditional solutions require deploying distributed synchronous condensers(DSCs)on the low-voltage sides of the split-winding transformers,but this approach leads to prohibitive investment and operational costs.To address this issue,this study first analyzes the impedance characteristics of split-winding transformers and proposes upgrading 10%of renewable energy capacity with grid-forming energy storage,complemented by voltage support devices on each low-voltage side.By comparing the MRSCR enhancement effects of DSCs and grid-forming storage,an optimization strategy for the low-volt-age winding capacity of split-winding transformers is developed.On this basis,a synergistic three-in-one configuration method combining"DSCs-grid-forming storage-split-winding transformer low-voltage capacity"is proposed to enhance MRSCR while reducing overall costs.Finally,a case study of a 1000 MW photovoltaic plant integrated into the Ningxia grid via three split-winding transformers was conducted,verifying both the technical feasibility and economic benefits of the proposed method.关键词
新能源多场站短路比/分裂变压器/调相机/构网型储能Key words
multiple renewable energy station short-circuit ratio(MRSCR)/split-winding transformer/distributed synchronous condenser/grid-forming energy storage分类
信息技术与安全科学引用本文复制引用
顾文波,马鑫,李旭涛,李宏强,周雷,张汉花..提升多场站短路比的新能源接入优化与支撑设备配置研究[J].宁夏电力,2025,(5):12-18,7.基金项目
国网宁夏电力有限公司科技项目(5229DK24000J) （5229DK24000J）
