现代电力2026，Vol.43Issue(1)：81-91,中插1,12.DOI:10.19725/j.cnki.1007-2322.2023.0419
基于虚拟无功功率方向的有源配电网保护方案
Active Distribution Network Protection Scheme Based on Virtual Reactive Power Direction
摘要
Abstract
As renewable energy is connected to the distribution network in the form of distributed generator(DG)in different locations and in different grid-connected ways,the fault characteristics of active distribution networks have undergone fundamental changes.The operational performance of the current longitudinal differential protection is affected by unmeasured branches,and the limited fiber deployment rate in the distribution network hinders the effective application of the longitudinal protection.The virtual reactive power is defined in the positive sequence fault component network,and the output characteristics of the virtual reactive power after the fault of the inverter distributed power supply are investigated.In addition,the branches of the active distribution network with unmeasurable ones are further analyzed after the fault occurs.Based on the fault characteristics of the power distribution network,the 5G communication technology and multi-agent technology are employed to build a distribution network protection architecture.A virtual reactive power directional protection scheme suitable for normal and abnormal communication conditions is proposed on this architecture.Finally,the simulation and verification are carried out through PSCAD to ensure the effectiveness and reliability of protection schemes.关键词
有源配电网/分布式电源/正序故障分量/不可测分支/5GKey words
active distribution network/distributed generator/positive-sequence fault component/unmeasurable branch/5G分类
信息技术与安全科学引用本文复制引用
郭少飞,杨鹏,徐潜,李铁成,李澳,王彤..基于虚拟无功功率方向的有源配电网保护方案[J].现代电力,2026,43(1):81-91,中插1,12.基金项目
国网河北省电力有限公司2022年科技项目(kj2022-005).State Grid Hebei Electric Power Co.,LTD.2022 Science and Technology Project(kj2022-005). （kj2022-005）
