Design, Implementation and Commissioning of a Remedial Action Scheme

摘要

In today's increasingly interconnected electrical world, the protection of the electrical network itself is just as important as the protection of the individual elements that make up the network. Remedial Action Schemes (RAS) are designed to monitor and protect electrical systems by automatically performing switching operations in response to adverse network conditions to ensure the integrity of the electrical system and avoid network collapse. This paper examines one such system developed to protect a portion of an electrical network in the southern interior of British Columbia, Canada. The system utilizes a number of different Intelligent Electronic Devices (IEDs) interconnected using a variety of networking and communication systems to form an integrated scheme capable of performing automated shedding of load and generation to avoid collapse of the regional electrical network. The paper outlines the design of this system, beginning with comprehensive system studies performed to examine and determine the requirements of the RAS. The implementation of the system is discussed including the architecture of the system as well as the selection of IEDs used and the role each plays in the overall scheme. Finally, the methods employed to commission the scheme are also provided.