Development and Verification of Wide-area Power Monitoring, Protection and Control System Employing IP-based Off-the-shelf and Standardized Technologies

Abstract

This paper proposes a network system architecture for next-generation wide-area monitoring, protection and control (WAMPAC) of power systems, featuring a wide-area Ethernet (L2-network) and time synchronization such as IEEE 1588 and other schemes associated with decentralized modular devices. Based on the architecture, a prototype WAMPAC system has been constructed and installed in an analog power system simulator to examine its communication performance, including time synchronism and show the validity of an actual application, wide-area integrated primary and backup protection with a current differential scheme. Fundamental analyses with respect to end-to-end transmission delay, system unavailability and scalability for double redundant current differential line protection systems with 4-repeater/5-span communication links were conducted to examine its applicability to an actual power system.