ABB Relion REC615, Техническое руководство

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9.4.4.2 Shot initiation
Figure 331: Example of an autoreclosing program with a reclose scheme matrix
In the AR function, each shot can be programmed to locate anywhere in the reclose
scheme matrix. The shots are like building blocks used to design the reclose
program. The building blocks are called CBBs. All blocks are alike and have settings
which give the attempt number (columns in the matrix), the initiation or blocking
signals (rows in the matrix) and the reclose time of the shot.
The settings related to CBB configuration are:
•
First...Seventh reclose time
•
Init signals CBB1…CBB7
•
Blk signals CBB1…CBB7
•
Shot number CBB1…CBB7
The reclose time defines the open and dead times, that is, the time between the
OPEN_CB
and the
CLOSE_CB
commands. The
Init signals CBBx setting defines the
initiation signals. The
Blk signals CBBx setting defines the blocking signals that
are related to the CBB (rows in the matrix). The
Shot number CBB1…CBB7 setting
defines which shot is related to the CBB (columns in the matrix). For example, CBB1
settings are:
•
First reclose time = 1.0s
•
Init signals CBB1 = 7 (three lowest bits: 111000 = 7)
•
Blk signals CBB1 = 16 (the fifth bit: 000010 = 16)
1MRS758755 C Control functions
REC615 & RER615
Technical Manual
663