电测与仪表2024，Vol.61Issue(3)：138-144,7.DOI:10.19753/j.issn1001-1390.2024.03.019
基于过渡电阻倾斜角的风电T接双电源系统自适应距离保护方案
Adaptive distance protection scheme of wind power T-connected dual power system based on transition resistance inclination angle
摘要
Abstract
In view of the situation that the traditional distance protection may misoperate and refuse to operate after the wind power T-type is connected to the high-voltage distribution network,it is of great significance to study the correspond-ing protection scheme.First of all,this paper deduces the expressions of measurement impedance of upstream and down-stream of wind power T-connection,and concludes that the additional impedance contained in it may make the traditional protection device not operate correctly.In view of this,an adaptive distance protection scheme of wind power T-connection system based on transition resistance inclination angle is proposed in this paper.The scheme can adaptively modify the measurement impedance so that it can track the short-circuit impedance and effectively eliminate the influence of addition-al impedance on distance protection.Finally,the scheme is verified by MATLAB simulation software.The results show that the proposed scheme is less affected by the fault location,transition resistance,power phase difference and wind pow-er operation mode,which can effectively solve the problem of refusing to operate or misoperation of traditional distance protection,and improve the security and stability of power grid.关键词
风电T接/自适应距离保护/测量阻抗/过渡电阻/过渡电阻倾斜角Key words
wind power T-connection/adaptive distance protection/measurement impedance/transition resistance/tran-sition resistance inclination angle分类
信息技术与安全科学引用本文复制引用
传云,王维庆,王海云,武家辉..基于过渡电阻倾斜角的风电T接双电源系统自适应距离保护方案[J].电测与仪表,2024,61(3):138-144,7.基金项目
自治区重点实验室开放课题(2018D04005) （2018D04005）
国家自然科学基金(16670205) （16670205）
教育部创新团队(IRT_16R63) （IRT_16R63）
自治区高校科研计划自然科学重点项目(XJEDU2019I009) （XJEDU2019I009）
