“边端融合”架构下配电系统全域选择性保护的仿真研究

基于物联网技术的全域选择性保护已成为低压配网选择性保护技术的新方向，针对传统选择性保护的局限性，提出一种基于“边端融合”及协作物联的低压配电系统全域选择性保护技术。采用将非接触电缆巡检系统和智能断路器两者核心功能相结合的方法，利用小波能量谱变换实现短路故障的快速检测与定位。通过仿真验证了所提全域保护的有效性，探讨了“边端融合”的协作保护机制及其可行性。

Simulation Research on Global Selective Protection Technology of Distribution System with Edge-Terminal Integration Architecture

With the proposal and development of ubiquitous power internet of things strategy， Internet of things（IoT）based global selective protection technology has become a new direction in low-voltage distribution network. Aiming at the limitations of traditional selective protection，based on the core functions of non-contact cable inspection system and intelligent circuit breaker， the paper proposes a global selective protection technology of the low-voltage distribution system based on edge-terminal integration and collaborative IoT， and uses wavelet energy spectrum transformation to realize the fast detection and location of short circuit fault. The effectiveness of the global protection is verified by the simulation， and the cooperative protection mechanism and its feasibility are discussed.