主动配电网的故障电流序分量保护方案

Research on Active Distribution Network Protection Scheme Based on Fault Current Sequence Component

配电网中接入分布式电源导致整个系统变成了双电源以及多电源系统,改变了本身的拓扑结构与故障特征,使得系统内部出现了双向潮流,导致配电网的保护方法不再适用于主动配电网.对此,本文提出了一个基于故障电流序分量的保护方案,将故障分为不对称性故障和对称金属性故障,根据线路两端正、负序电流相位的不同,分别采用负序电流相位保护和正序电流相位保护.最后,通过在MATLAB/Simulink中搭建实验模型,模拟各种故障类型,验证了基于故障电流序分量保护方案的有效性.

In order to explore the application of online and offline hybrid teaching mode in big data courses,the single form of the traditional teaching mode,teaching method and evaluation method etc.is analyzed in this paper.The teaching mode that combining online teaching and offline practice of big data courses is researched and realized based on the teaching platforms of Chaoxing and Rain Class,which focuses on cultivating college students'independent learning ability and practical ability.Through reforming the curriculum teaching mode and assessment system,the learning effect of students has been improved,and it has provided a basis for the cultivation of big data application talents.