Real-time signal time delay analysis of WAMS based on MPLS VPN technology

A strong power dispatching communication network with high speed becomes the premise of the establishment of a reliable Wide Area Monitoring System (WAMS). Signal transmission of Phasor Measurement Unit (PMU) is taken into account in different collective layers in this paper. The time delay modes based on Multi-Protocol Label Switching-Virtual Private Network (MPLS VPN) and point-to-point 2M link illustrate that the time delay of the former is better than the latter. Building the VPN network under MPLS can provide quality of service and ensure the stable transmission of real-time signal through traffic engineering, differentiated services and the protection function in MPLS layer with virtual route. The time delay character of “1+1” protection on the MPLS layer is also analyzed in this paper.