基于GOOSE网络信息共享的煤矿供电保护技术

Protection technology of coal mine power based on GOOSE network with information sharing

针对目前煤矿供电系统存在短路故障时出现越级跳闸现象和单相接地故障选线误动问题,提出了一种基于GOOSE网络信息共享的煤矿供电保护技术,即利用GOOSE网络传输闭锁信号防越级跳闸和传输零序全电流矢量信息实现单相接地保护选线。该技术利用煤矿千兆工业以太网,基于GOOSE高速实时通信机制,实现保护装置间故障信息共享,可有效防止越级跳闸现象并提高单相接地故障选线的准确性。

For problems of override trip in short-circuit fault and fault line selection in single-phase earth fault of coal mine power system, a protection technology of coal mine power based on GOOSE network with information sharing was proposed. The technology realizes anti-override trip with blocking signal and line selection in single-phase earth protection with zero sequence full current vector information based on GOOSE network. On the basis of existing gigabit industrial Ethernet of coal mine and high-speed real-time communication mechanism of GOOSE, fault information can be shared between protection devices, which can realize anti-override trip effectively and improve accuracy of fault line selection in single-phase earth fault.