摘要
针对基于IEC61850通信标准的数字化变电站,提出一种分散计算并就地控制的新型母线保护方案。根据数字化变电站技术特征,构建了无主站分布式母线保护整体结构;分析了采样值报文和GOOSE信息的数据传输特征,基于以太网技术设计了联系过程层设备和间隔层保护装置的过程总线;利用非传统电流互感器无饱和的优点,将瞬时值电流差动保护原理应用到分布式母线保护计算中。分析表明所提方案结构简单、可靠性高、切实可行。
A busbar protection scheme with distributed calculation and local control is proposed for digital substation based on IEC61850.Its overall configuration without master station is constructed according to the technical characteristics of digital substation.The data transmission characteristics of samples and GOOSE are analyzed and the process bus which connects the devices of process layer and the protection equipment of bay layer is designed based on Ethernet technology.The principle of instantaneous current differential protection is applied in the calculation of distributed busbar protection,which takes the advantage of unsaturated current transducer.Analysis shows that the proposed scheme has simple structure,high reliability and feasibility.
出处
《电力自动化设备》
EI
CSCD
北大核心
2010年第11期94-97,共4页
Electric Power Automation Equipment
