Relay-to-relay direct communication system in an electric...

Details Relay-to-relay direct communication system in an electric... Relay-to-relay direct communication system in an electric...

H - Electricity

04

L

H04L 12/28 (2006.01) H02H 1/00 (2006.01) H04L 12/56 (2006.01) H02H 7/26 (2006.01)

Patent

CA 2452377

The system provides communication of information between at least two protective relays (10, 12) serving a power system line (14). The communication comprises a series of successive data messages of four characters, each of which includes eight data bits, on eight data channels. The data bits include output function status bits from the transmitting relay (10) on user selected channels, and virtual terminal data bits on still other user selected channels. A synchronization channel (30) produces information to synchronize the transmission/receiving of the analog data and the virtual terminal data, on the basis of frames of data, each frame containing 18 messages.

L'invention concerne un système permettant une communication d'informations entre au moins deux relais (10, 12) de protection desservant une ligne (14) de système d'alimentation électrique. Ladite communication comprend une série de messages d'information successifs de quatre caractères, comprenant chacun huit bits d'information sur huit voies de transmission d'informations. Les bits d'information comprennent des bits d'état de fonction de sortie, provenant d'un relais (10) d'émission sur des voies sélectionnées par l'utilisateur, et des bits d'information de terminal virtuel sur encore d'autres voies sélectionnées par l'utilisateur. Une voie de synchronisation (30) produit des informations servant à synchroniser l'émission/réception des informations analogiques et des informations du terminal virtuel, sur la base de trames d'informations, contenant chacune 18 messages.

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