ABB Relion 650 Series Technical Manual page 519

1MRK 506 326-UUS B
14.1.7 Operation principle
The registration of pulses is done according to setting of
binary input channels located on the BIO module. Pulse counter values are sent to the station HMI
with predefined cyclicity without reset.
The reporting time period can be set in the range from 1 second to 60 minutes and is synchronized
with absolute system time. Interrogation of additional pulse counter values can be done with a
command (intermediate reading) for a single counter. All active counters can also be read by IEC
61850.
Pulse counter (PCGGIO) function in the IED supports unidirectional incremental counters. That
means only positive values are possible. The counter uses a 32 bit format, that is, the reported
value is a 32-bit, signed integer with a range 0...+2147483647. The counter value is stored in
semiretain memory.
The reported value to station HMI over the station bus contains Identity, Scaled Value (pulse count
x scale), Time, and Pulse Counter Quality. The Pulse Counter Quality consists of:
• Invalid (board hardware error or configuration error)
• Wrapped around
• Blocked
• Adjusted
The transmission of the counter value can be done as a service value, that is, the value frozen in
the last integration cycle is read by the station HMI from the database. PCGGIO updates the value
in the database when an integration cycle is finished and activates the NEW_VAL signal in the
function block. This signal can be time tagged, and transmitted to the station HMI. This time
corresponds to the time when the value was frozen by the function.
The BLOCK and READ_VAL inputs can be connected to blocks, which are intended to be controlled
either from the station HMI or/and the local HMI. As long as the BLOCK signal is set, the pulse
counter is blocked. The signal connected to READ_VAL performs readings according to the setting
of parameter
The BI_PULSE input is connected to the used input of the function block for the binary input
output module (BIO).
The RS_CNT input is used for resetting the counter.
Each PCGGIO function block has four binary output signals that can be used for for event
recording: INVALID, RESTART, BLOCKED and NEW_VAL. These signals and the SCAL_VAL signal are
accessable over IEC 61850.
The INVALID signal is a steady signal and is set if the binary input module, where the pulse counter
input is located, fails or has wrong configuration.
The RESTART signal is a steady signal and is set when the reported value does not comprise a
complete integration cycle. That is, in the first message after IED start-up, in the first message
after deblocking, and after the counter has wrapped around during last integration cycle.
The BLOCKED signal is a steady signal and is set when the counter is blocked. There are two
reasons why the counter is blocked:
• The BLOCK input is set, or
• The binary input module, where the counter input is situated, is inoperative.
Line distance protection REL650
Technical manual
CountCriteria . The signal must be a pulse with a length >1 second.
© Copyright 2011 ABB Power Grids. All rights reserved
CountCriteria parameter on one of the 9
Section 14
Metering
M13397-3 v4
M13399-3 v4
513