Arcteq AQ S391 User manual

INSTRUCTION MANUAL
AQ S391 –Bay control IED

Instruction manual –AQ S391 bay control IED 2 (63)
Revision
1.01
Date
January 2012
Changes
-HW construction and application drawings revised
Revision
1.02
Date
May 2012
Changes
-Synchrocheck chapter revised
-Voltage measurement module revised
-CPU module description added
-Binary input module description revised
-IRIG-B information added
-Updated ordering information and type designation
-Technical data revised
Revision
1.03
Date
July 2012
Changes
-Synch check parameter updates
Revision
1.04
Date
6.10.2015
Changes
-Updated parameters
Revision
1.05
Date
18.10.2019
Changes
-Updated construction and installation chapter

Instruction manual –AQ S391 bay control IED 3 (63)
TABLE OF CONTENTS
1GENERAL..................................................................................................................... 5
2APPLICATION .............................................................................................................. 6
3MAIN CHARACTERISTICS OF THE AQ S391 BAY CONTROL IED ............................ 7
4SOFTWARE SETUP OF THE IED ................................................................................ 8
4.1 Circuit breaker control function...................................................................................... 8
4.1.1 Application.......................................................................................................... 8
4.1.2 Mode of operation............................................................................................... 8
4.1.3 Available internal status variable and command channel.................................... 9
4.1.4 The symbol of the function block in the AQtivate 300 software ......................... 10
4.1.5 Configuration examples .................................................................................... 12
4.1.6 Setting parameters ........................................................................................... 13
4.2 Disconnector control function ...................................................................................... 14
4.2.1 Application........................................................................................................ 14
4.2.2 Mode of operation............................................................................................. 14
4.2.3 Available internal status variable and command channel.................................. 15
4.2.4 Configuration example...................................................................................... 17
4.3 Dead line detection function ........................................................................................ 18
4.4 Voltage transformer supervision function (VTS) .......................................................... 20
4.5 Synchrocheck function du/df (25) ................................................................................ 24
5APPLICATION EXAMPLES ........................................................................................ 35
5.1 One and half circuit breaker configuration ................................................................... 35
5.1.1 IED IO Positions in one and half circuit breaker configuration........................... 36
6CONSTRUCTIONS AND INSTALLATION .................................................................. 37
6.1 CPU Module................................................................................................................ 38
6.2 Power supply module .................................................................................................. 39
6.3 Binary input module (DI12).......................................................................................... 40
6.4 Binary input module (DI8)............................................................................................ 41
6.5 Binary input module (DI16).......................................................................................... 42
6.6 Binary output module (BO8) ........................................................................................ 43
6.7 Binary output module (BO12) ...................................................................................... 44
6.8 BI6 & BO5 module....................................................................................................... 45
6.9 9DI + BNC IRIG-B ....................................................................................................... 47
6.10 mA input module ......................................................................................................... 48

Instruction manual –AQ S391 bay control IED 4 (63)
6.11 Tripping module .......................................................................................................... 49
6.12 RTD module................................................................................................................ 50
6.13 Analog input module.................................................................................................... 52
6.14 Voltage measurement module..................................................................................... 53
6.15 Current measurement module ..................................................................................... 54
6.16 Installation and dimensions ......................................................................................... 55
7TECHNICAL DATA ..................................................................................................... 57
7.1 Monitoring functions .................................................................................................... 57
7.2 Control functions ......................................................................................................... 57
7.3 Hardware .................................................................................................................... 58
7.3.1 Power supply module ....................................................................................... 58
7.3.2 Current measurement module .......................................................................... 58
7.3.3 Voltage measurement module .......................................................................... 59
7.3.4 High speed trip module..................................................................................... 59
7.3.5 Binary output module........................................................................................ 59
7.3.6 Binary input module .......................................................................................... 59
7.3.7 mA input module............................................................................................... 60
7.4 Tests and environmental conditions ............................................................................ 60
7.4.1 Disturbance tests.............................................................................................. 60
7.4.2 Voltage tests..................................................................................................... 60
7.4.3 Mechanical tests............................................................................................... 60
7.4.4 Casing and package ......................................................................................... 61
7.4.5 Environmental conditions.................................................................................. 61
8ORDERING INFORMATION ....................................................................................... 62
9REFERENCE INFORMATION .................................................................................... 63

Instruction manual –AQ S391 bay control IED 5 (63)
1GENERAL
The AQ S391 bay control IED is a member of the AQ-300 product line. The AQ-300
protection product line in respect of hardware and software is a modular device. The
hardware modules are assembled and configured according to the application IO
requirements and the software determines the available functions. This manual describes
the specific application of the AQ S391 bay control IED. All generic AQ 300 series
features such as colour touch screen HMI and wide range of communication protocols
including IEC 61850 are available in this particular device as well.

Instruction manual –AQ S391 bay control IED 6 (63)
2APPLICATION
The AQ S391 bay control IED is suitable to various types of control and monitoring
applications in extra-high voltage, high voltage and medium voltage applications. The
modular hardware construction offers required options for different kind of bay
configurations in terms of type and quantity of analogue and digital signals. The versatile
programmable software logic allows for extensive customization of provided standard
configurations.
The IED may be applied to single or double breaker arrangements both in single or double
busbar configurations. Control and monitoring of full diameter of one and half circuit
breaker arrangement can be realized with a single IED as well.
Motorized switching devices can be controlled from remote control system through
communication or locally using the HMI. Synchrocheck function is provided for safe
closing of circuit breakers.

Instruction manual –AQ S391 bay control IED 7 (63)
3MAIN CHARACTERISTICS OF THE AQ S391 BAY CONTROL
IED
-Flexible and modular hardware construction allowing for multiple sets of current and
voltage measurement modules, digital input and output modules and mA input modules
-Flexible software adaptation to different busbar and interlocking schemes using
programmable logic functions
-Configurable MIMIC display
-Touch screen (TFT) colour display
-Local and remote control and/or status indication of up to 12 controllable objects
-Direct control mode or select before execute control mode
-CT supervision (CTS)
-Dead line detection features (DLD)
-Voltage transformer supervision (VTS)
-Synchrocheck and synchroswitch function over multiple circuit breakers
-Optional redundant power supply (80-300Vac/dc or 48Vdc)
-Programmable disturbance recorder for up to 100 records stored in non-volatile memory
-Event recorder for up to 10000 latest events stored in non-volatile memory
-IED time synchronization (e.g. SNTP or IRIG-B)
-Wide range of communication protocols, including IEC 61850
-IED self supervision functionality

Instruction manual –AQ S391 bay control IED 8 (63)
4SOFTWARE SETUP OF THE IED
In this chapter are presented the protection and control functions as well as the monitoring
functions.
Name
IEC
ANSI
Description
CB Control
-
-
Circuit breaker control
DS Control
-
-
Disconnector control
DLD
-
-
Dead line detection
VTS
-
60
Voltage transformer supervision
CTS
-
Current transformer supervision
SYN25
SYNC
25
Synchro-check function Δf, ΔU, Δφ
DREC
-
-
Disturbance recorder
Table 4-1 Available control and monitoring functions
4.1 CIRCUIT BREAKER CONTROL FUNCTION
4.1.1 APPLICATION
The circuit breaker control block can be used to integrate the circuit breaker control of the
AQ 300 device into the station control system and to apply active scheme screens of the
local LCD of the device.
4.1.2 MODE OF OPERATION
The circuit breaker control block receives remote commands from the SCADA system and
local commands from the local LCD of the device, performs the prescribed checking and
transmits the commands to the circuit breaker. It processes the status signals received
from the circuit breaker and offers them to the status display of the local LCD and to the
SCADA system.
Main features:
•Local (LCD of the device) and Remote (SCADA) operation modes can be enabled or
disabled individually.

Instruction manual –AQ S391 bay control IED 9 (63)
•The signals and commands of the synchro check / synchro switch function block can be
integrated into the operation of the function block.
•Interlocking functions can be programmed by the user applying the inputs “EnaOff” and
“EnaOn”, using the graphic equation editor.
•Programmed conditions can be used to temporarily disable the operation of the function
block using the graphic equation editor.
•The function block supports the control models prescribed by the IEC 61850 standard.
•All necessary timing tasks are performed within the function block:
oTime limitation to execute a command
oCommand pulse duration
oFiltering the intermediate state of the circuit breaker
oChecking the synchro check and synchro switch times
oControlling the individual steps of the manual commands
•Sending trip and close commands to the circuit breaker (to becombined with the trip
commands of the protection functions and with the close command of the automatic
reclosing function; the protection functions and the automatic reclosing function directly
gives commands to the CB). The combination is made graphically using the graphic
equation editor
•Operation counter
•Event reporting
4.1.3 AVAILABLE INTERNAL STATUS VARIABLE AND COMMAND CHANNEL
To generate an active scheme on the local LCD, there is an internal status variable
indicating the state of the circuit breaker. Different graphic symbols can be assigned to the
values. (See AQtivate 300 software instructions for more details).
Status variable
Title
Explanation
CB1Pol_stVal_Ist_
Status
Can be:
0: Intermediate
1: Off
2: On
3:Bad
Table 4-2: Status variable of the circuit breaker control
The available control channel to be selected is:

Instruction manual –AQ S391 bay control IED 10 (63)
Command channel
Title
Explanation
CB1Pol_Oper_Con_
Operation
Can be:
On
Off
Table 4-3: Command channel of the circuit breaker control
Using this channel, the pushbuttons on the front panel of the device can be assigned to
close or open the circuit breaker. These are the “Local commands”.
4.1.4 THE SYMBOL OF THE FUNCTION BLOCK IN THE AQTIVATE 300
SOFTWARE
Figure 4-1: Function block symbol of circuit breaker control
The binary input and output status signals of the circuit breaker control are listed in tables
below.

Instruction manual –AQ S391 bay control IED 11 (63)
Binary status signal
Title
Explanation
CB1Pol_Local_GrO_
Local
If this input is active, the circuit breaker can be
controlled using the local LCD of the device.
CB1Pol_Remote_GrO_
Remote
If this input is active, the circuit breaker can be
controlled via remote communication channels of
the SCADA system.
CB1Pol_SynOK_GrO_
SynOK
This input indicates if the synchron state of the
voltage vectors at both sides of the circuit breaker
enables the closing command. This signal is usually
generated by the synchro check/ synchro switch
function. If this function is not available, set the
input to logic true.
CB1Pol_EnaOff_GrO_
EnaOff
The active state of this input enables the opening of
the circuit breaker. The state is usually generated
by the interlocking conditions defined by the user.
CB1Pol_EnaOn_GrO_
EnaOn
The active state of this input enables the closing of
the circuit breaker. The state is usually generated
by the interlocking conditions defined by the user.
CB1Pol_BlkProc_GrO_
BlkProc
The active state of this input blocks the operation of
the circuit breaker. The conditions are defined by
the user.
CB1Pol_stValOff_GrO_
stValOff
Off state of the circuit breaker.
CB1Pol_stValOn_GrO_
stValOn
On state of the circuit breaker.
CB1Pol_ExtTrip_GrO_
ExtTrip
External trip command for the circuit breaker (e.g.
from protection). This signal is considered when
evaluating unintended operation.
Table 4-4: The binary input status signals of the circuit breaker control
Binary status signal
Title
Explanation
CB1Pol_CmdOff_GrI_
Off Command
Off command impulse, the duration of
which is defined by the parameter “Pulse
length”
CB1Pol_CmdOn_GrI_
On Command
On command impulse, the duration of
which is defined by the parameter “Pulse
length”
CB1Pol_StartSW_GrI_
Start Synchro-switch
If the synchro check/synchro switch
function is applied and the synchron state
conditions are not valid for the time
defined by the parameter “Max.SynChk
time”, then this output triggers the synchro
switch function (see synchro check/
synchro switch function block description).
CB1Pol_Oper_GrI_
CB Operated
An impulse with a duration of 150 ms at
any operation of the circuit breaker
CB1Pol_SelfOper_GrI_
Unintended Oper
This output is logic true if the status of the
circuit breaker has changed without
detected command from the SCADA
system or on the input “Ext trip”
CB1Pol_Opened_GrI_
Opened
The filtered status signal for opened state
of the circuit breaker
CB1Pol_Closed_GrI_
Closed
The filtered status signal for closed state of
the circuit breaker
Table 4-5: The binary output status signals of the decision logic

Instruction manual –AQ S391 bay control IED 12 (63)
4.1.5 CONFIGURATION EXAMPLES
4.1.5.1 Example 1
Figure 4-2: Simulation of the circuit breaker (and disconnectors; detail)
In the Figure above the local/remote selection is made by another function block
(Common).
In VB1Pol, synchro check is not applied, the input “SynOK” is programmed for constant
“True”.
The circuit breaker can be switched any time, no interlocking is needed, the “EnaOff” and
“EnaOn” are programmed for constant “True”. (However, note the similar DisConn_Bus
function block in the Figure above.)
The function block does not need to be blocked; the “BlkProc” input is not connected.
The CB is simulated by an RS flip-flop, the status inputs are connected to the simulated
signals.

Instruction manual –AQ S391 bay control IED 13 (63)
4.1.5.2 Example 2
Figure 4-3: A simple application
In Figure 4-3 above the local/remote selection is made by another function block
(Common).
In VB1Pol, synchro check is not applied, the input “SynOK” is programmed for constant
“True”.
Interlocking is applied; the “EnaOff” and “EnaOn” are programmed with external binary
input signals.
The function block does not need to be blocked; the “BlkProc” input is not connected.
The CB status inputs are connected to the binary input signals.
The commands are directed to another graphic page (to be “OR”-ed with the signals of the
protection and automatic reclosing functions).
4.1.6 SETTING PARAMETERS
Parameter
Setting value, range
and step
Description
ControlModel
Direct normal,
Direct enhanced,
SBO enhanced,
Direct normal: only command transmission
Direct enhanced: command transmission with
status check and command supervision
SBO enhanced: Select Before Operate (select
before execute) mode with status check and
command supervision. Default is Direct normal.
Max operating
time
10...20000ms
Timeout for signaling failed operation. Default is
1000.

Instruction manual –AQ S391 bay control IED 14 (63)
Pulse length
50…30000ms
Control pulse duration. Default is 100.
Max.Intermediate
time
20…30000ms
Waiting time, at expiry intermediate state of the
disconnector is reported. Default is 100.
Max.SynChk
time
10…5000ms
Length of the time period to wait for the conditions
of the synchronous state. After expiry of this time,
the synchroswitch procedure is initiated (see
synchrocheck/ synchroswitch function description).
Default is 1000.
Max.SynSW time
0…60000ms
Length of the time period to wait for the
synchroswitch pulse (see
synchrocheck/synchroswitch function description).
After this time the function resets and no switching
is performed. Default is 0. (If this parameter is set
to 0, then the Synchroswitch is not activated)
SBO Timeout
1000…20000ms
Duration of the waiting time between object
selection and command selection. At timeout no
command is performed. Default is 5000.
Table 4-6: Setting parameters of the circuit breaker control function
4.2 DISCONNECTOR CONTROL FUNCTION
4.2.1 APPLICATION
The disconnector control block can be used to integrate the disconnector control of the
AQ 300 device into the station control system and to apply active scheme screens of the
local LCD of the device.
4.2.2 MODE OF OPERATION
The disconnector control block receives remote commands from the SCADA system and
local commands from the local LCD of the device, performs the prescribed checking and
transmits the commands to the disconnector. It processes the status signals received from
the disconnector and offers them to the status display of the local LCD and to the SCADA
system.
Main features:
•Local (LCD of the device) and Remote (SCADA) operation modes can be enabled or
disabled individually.
•Interlocking functions can be programmed by the user applying the inputs “EnaOff” and
“EnaOn”, using the graphic equation editor.
•Programmed conditions can be used to temporarily disable the operation of the function
block using the graphic equation editor.

Instruction manual –AQ S391 bay control IED 15 (63)
•The function block supports the control models prescribed by the IEC 61850 standard.
•All necessary timing tasks are performed within the function block:
oTime limitation to execute a command
oCommand pulse duration
oFiltering the intermediate state of the disconnector
oControlling the individual steps of the manual commands
•Trip and close commands to the disconnector
•Operation counter
•Event reporting
4.2.3 AVAILABLE INTERNAL STATUS VARIABLE AND COMMAND CHANNEL
To generate an active scheme on the local LCD, there is an internal status variable
indicating the state of the circuit breaker. Different graphic symbols can be assigned to the
values. (See AQtivate 300 software instructions for more details).
Status variable
Title
Explanation
DisConn l_stVal_Ist_
Status
Can be:
0: Intermediate
1: Off
2: On
3:Bad
Table 4-7: Status variable of the disconnector control
The available control channel to be selected is:
Command channel
Title
Explanation
DisConn _Oper_Con_
Operation
Can be:
On
Off
Table 4-8: Command channel of the disconnector control
Using this channel, the pushbuttons on the front panel of the device can be assigned to
close or open the disconnector. These are the “Local commands”.

Instruction manual –AQ S391 bay control IED 16 (63)
Figure 4-4: The symbol of the function block
The binary input and output status signals of the disconnector control are listed in tables
below.
Binary status signal
Title
Explanation
DisConn_Local_GrO_
Local
If this input is active, the disconnector can be
controlled using the local LCD of the device.
DisConn_Remote_GrO_
Remote
If this input is active, the disconnector can be
controlled via remote communication channels of
the SCADA system.
DisConn_EnaOff_GrO_
EnaOff
The active state of this input enables the opening of
the disconnector. The state is usually generated by
the interlocking conditions defined graphically by
the user.
DisConn_EnaOn_GrO_
EnaOn
The active state of this input enables the closing of
the disconnector. The state is usually generated by
the interlocking conditions defined graphically by
the user.
DisConn_BlkProc_GrO_
BlkProc
The active state of this input blocks the operation of
the disconnector. The conditions are defined
graphically by the user.
DisConn_stValOff_GrO_
stValOff
Off state of the disconnector.
DisConn_stValOn_GrO_
stValOn
On state of the disconnector.
Table 4-9: The binary input status signals of the disconnector control
Binary status signal
Title
Explanation
DisConn_CmdOff_GrI_
Off Command
Off command impulse, the duration of
which is defined by the parameter “Pulse
length”
DisConn_CmdOn_GrI_
On Command
On command impulse, the duration of
which is defined by the parameter “Pulse
length”
DisConn_Oper_GrI_
CB Operated
An impulse with a duration of 150 ms at
any operation of the disconnector
DisConn_SelfOper_GrI
_
Unintended Oper
This output is logic true if the status of the
disconnector has changed without
detected command from the SCADA
system or on the input “Ext trip”
DisConn_Opened_GrI_
Opened
The filtered status signal for opened state
of the disconnector
DisConn_Closed_GrI_
Closed
The filtered status signal for closed state of
the disconnector
Table 4-10: The binary output status signals of the disconnector control

Instruction manual –AQ S391 bay control IED 17 (63)
4.2.4 CONFIGURATION EXAMPLE
Figure 4-5: Simulation of the disconnector (and circuit breaker; detail)
In the Figure above the local/remote selection is made by another function block
(Common).
The disconnector cannot be switched any time: interlocking is needed; the “EnaOff” and
“EnaOn” are programmed for the “Opened” state of the circuit breaker.
The function block does not need to be blocked; the “BlkProc” input is not connected.
The disconnector is simulated by an RS flip-flop, the status inputs are connected to the
simulated signals.

Instruction manual –AQ S391 bay control IED 18 (63)
Table 4-11Setting parameters of the disconnector control function
Parameter
Setting value, range
and step
Description
ControlModel
Direct normal,
Direct enhanced,
SBO enhanced,
Direct normal: only command transmission
Direct enhanced: command transmission with
status check and command supervision
SBO enhanced: Select Before Operate (select
before execute) mode with status check and
command supervision. Default is Direct normal.
Type of Switch
N/A,Load break,
Disconnector,
Earthing Switch,
HS Earthing Switch
Type of switching device. Default is Disconnector.
Forced check
True, False
If true, then the check function cannot be neglected by
the check attribute defined by the IEC 61850 standard
Max operating
time
10...20000ms
Timeout for signaling failed operation. Default is
1000.
Pulse length
50…30000ms
Control pulse duration. Default is 100.
Max.Intermediate
time
20…30000ms
Waiting time, at expiry intermediate state of the
disconnector is reported. Default is 100.
SBO Timeout
1000…20000ms
Duration of the waiting time between object
selection and command selection. At timeout no
command is performed. Default is 5000.
4.3 DEAD LINE DETECTION FUNCTION
The “Dead Line Detection” (DLD) function generates a signal indicating the dead or live
state of the line. Additional signals are generated to indicate if the phase voltages and
phase currents are above the pre-defined limits.
The task of the “Dead Line Detection” (DLD) function is to decide the Dead line/Live line
state.
Criteria of “Dead line” state: all three phase voltages are below the voltage setting value
AND all three currents are below the current setting value.
Criteria of “Live line” state: all three phase voltages are above the voltage setting value.
Dead line detection function is used in the voltage transformer supervision function also
as an additional condition.
In the figure below is presented the operating logic of the dead line detection function.

Instruction manual –AQ S391 bay control IED 19 (63)
Figure 4-6: Principal scheme of the dead line detection function
The function block of the dead line detection function is shown in figure bellow. This block
shows all binary input and output status signals that are applicable in the AQtivate 300
software.
Figure 4-7: The function of the dead line detection function
The binary input and output status signals of the dead line detection function are listed in
tables below.
Table 4-12: The binary input signal of the dead line detection function
Table 4-13: The binary output status signals of the dead line detection function

Instruction manual –AQ S391 bay control IED 20 (63)
Table 4-14Setting parameters of the dead line detection function
Parameter
Setting value, range
and step
Description
Operation
On
Off
Operating mode selection for the function. Operation can be
either disabled “Off”or enabled “On”. Default setting is
enabled.
Min. operate
voltage
10…100 % by step of
1 %
Minimum voltage threshold for detecting the live line status.
All measured phase to ground voltages have to be under this
setting level. Default setting is 60 %.
Min. operate
current
8…100 % by step of
1 %
Minimum current threshold for detecting the dead line status.
If all the phase to ground voltages are under the setting “Min.
operate voltage”and also all the phase currents are under
the “Min. operate current”setting the line status is considered
“Dead”. Default setting is 10 %.
4.4 VOLTAGE TRANSFORMER SUPERVISION FUNCTION (VTS)
The voltage transformer supervision function generates a signal to indicate an error in the
voltage transformer secondary circuit. This signal can serve, for example, a warning,
indicating disturbances in the measurement, or it can disable the operation of the distance
protection function if appropriate measured voltage signals are not available for a distance
decision.
The voltage transformer supervision function is designed to detect faulty asymmetrical
states of the voltage transformer circuit caused, for example, by a broken conductor in the