Adaptive Relay Protection Concept for Smart Grids
نویسنده
چکیده
Smart Grid refers to an intelligent grid that employs modern information and telecommunication technologies to meet the challenges relating to the power delivery in the future. These challenges are due to, among others, increased use of renewable energy and power supply reliability requirements of modern digital society. In order to fully realise the Smart Grids a new kind of approach for the power system protection is also needed. In this paper the requirements for the protection of the medium voltage (MV) level of Smart Grid are discussed and a new type of adaptive relay protection concept is proposed. Modern relay protection systems use so called intelligent electronic devices, IEDs. They are devices that have both data processing and telecommunication capabilities. This makes them suitable platforms for an advanced protection system design. The novel protection concept proposed in this paper is based on the distributed intelligence located in the IEDs and seamless messaging capabilities between all the IEDs in the system.
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