301 Madrid, SPAIN Coordination of Protection （301年马德里,西班牙的协调保护）.pdfVIP

Study Committee B5 Colloquium 2007 October 15-20 301 Madrid, SPAIN Coordination of Protection Relays Hideyuki Kameda (CRIPI, JP), Seung-Jae Lee (Myongji Univ., KR), Eva Werdin (Svenska Kraftnat, SE), Zainoren B. Xhukri (Tenaga, MY), Henri Grasset (Areva, FR), Takahiro Kase (Toshiba Int., UK), Chikashi Komatsu (Hitachi, Ltd., JP) Abstract Protection, seen as the recovery of the power system to a stable state, depends not only on the reliability and technical excellence of its components but also on the adequacy of the functions to the application for which they were designed. Protective relaying, as many other systems, is not made by ideal entities, but by dispersed, discrete and non error-free ones. These devices, IED, or more generally functions need to be linked with each other in an organized manner in order to allow the Protection System acting as a whole and in a selective way: Coordination is the technique, art or process that makes this possible. This paper constitutes the introduction to the WG B5.19 Report which covers protection system coordination issues. The Report presents the results of a worldwide questionnaire regarding protection system functions breakdown by power system components, voltage level, Main and Backup, including Special Protection Schemes applications. Examples of required coordination studies are also pointed out in this paper, whilst the Report will deal with a more detailed sequence of the coordination between protective relaying devices and functions, illustrating with concrete situations.