Prosoft-technology PLX8X-MNET-61850 Manuel d'utilisateur télécharger pdf (Page 174)

Reference PLX8x-MNET-61850 ♦ Communication Gateway

User Manual Modbus TCP/IP to IEC 61850

Page 174 of 228 ProSoft Technology, Inc.

May 14, 2014

6.6.6 Report Control Block BRCB (Clause 14)

Buffered Report Control Block (BRCB)

A Buffered Report Control Block (BRCB) is associated with a DATA-SET. BRCB

data is queued up, or buffered, in the IED, and sent sequentially to the connected

IEC-61850 Client. The size of the buffer is defined by the IED. BRCB is used so

that data will not be lost due to communication control or loss of connection.

There are procedures required around the reporting, and the IED may only report

to one Client.

Unbuffered Report Control Block (URCB)

An Unbuffered Report Control Block (URCB) is associated with a DATA-SET.

URCB data is sent immediately to the connected IEC-61850 Client. If the

transport data flow is not fast enough to support the movement of this data, some

may be lost. The IED can have multiple instances of the URCB data, and

manages the separation of the instances to the IEC-61850 Clients.

6.6.7 Control (Clause 17)

There are 5 types of control models defined:

 Status-only

 Direct-with-normal-security

 Select Before Operate SBO-with-normal-security

 Direct-with-enhanced-security

 Select Before Operate SBO-with-enhanced-security

Enhanced Security tends to be used only for high-voltage sites.

SBO includes a Select step, used to check that the control may be valid and to

eventually lock a resource.

1 2 ... 169 170 171 172 173 174 175 176 177 178 179 ... 227 228

Pas de commentaire

Prosoft-technology PLX8X-MNET-61850 Manuel d'utilisateur Page 174