Application; General; Operator Place - ABB REC 561 User Manual

1MRK 580 150-XEN
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2 Application

2.1 General

2.2 Operator place

Apparatus control
A bay can handle, for examples a power line, a transformer, a reactor, or a
capacitor bank. The different high-voltage apparatuses within the bay
level can be operated directly by the operator or indirectly by sequences.
The different apparatuses can also be operated automatically.
Because a high-voltage apparatus can be allocated to many functions
within a PYRAMID Substation Automation system, the object-oriented
approach with an internal module that handles the interaction and status of
each process object ensures consistency in the process information used
by higher-level control functions.
High-voltage apparatuses such as breakers and disconnectors are control-
led and supervised by one software module each. Because the number and
type of signals connected to a breaker and a disconnector are almost the
same, the same software is used to handle these two types of apparatuses.
The software module is connected to the physical process unit in the
switchyard by a number of digital inputs and outputs. Special function
blocks were created for making bay and apparatus control programs as
efficient as possible. Four types of function blocks were created to cover
most of the control and supervision within the bay.
The different functions included in the apparatus control are described
below.
The apparatus can be controlled from three different operator places:
• Remote
• Station
• Local
The operator places have different priorities:
• Local (highest)
• Station
• Remote (lowest)
Normally, only one operator place is valid at a time. But the user can
define that more than one operator place is valid at the same time.
The remote operator place is assigned by the station operator. When local
operator place is deactivated (by the local operator) previous operator
place becomes valid.
When the operator place is established, a selection of the apparatus can be
made. This is possible in two different ways only, depending on the
select/execute principle. Either there is one (close or open) selection input
set, followed by simultaneous setting of the execute inputs.
ABB Network Partner AB
Version 1.0-00