REG630 Appl 757582 ENb
REG630 Appl 757582 ENb
REG630 Appl 757582 ENb
Trademarks
ABB and Relion are registered trademarks of the ABB Group. All other brand or
product names mentioned in this document may be trademarks or registered
trademarks of their respective holders.
Warranty
Please inquire about the terms of warranty from your nearest ABB representative.
http://www.abb.com/substationautomation
Disclaimer
The data, examples and diagrams in this manual are included solely for the concept
or product description and are not to be deemed as a statement of guaranteed
properties. All persons responsible for applying the equipment addressed in this
manual must satisfy themselves that each intended application is suitable and
acceptable, including that any applicable safety or other operational requirements
are complied with. In particular, any risks in applications where a system failure and/
or product failure would create a risk for harm to property or persons (including but
not limited to personal injuries or death) shall be the sole responsibility of the
person or entity applying the equipment, and those so responsible are hereby
requested to ensure that all measures are taken to exclude or mitigate such risks.
This product has been designed to be connected and communicate data and
information via a network interface which should be connected to a secure
network. It is the sole responsibility of the person or entity responsible for network
administration to ensure a secure connection to the network and to take the
necessary measures (such as, but not limited to, installation of firewalls, application
of authentication measures, encryption of data, installation of anti virus programs,
etc.) to protect the product and the network, its system and interface included,
against any kind of security breaches, unauthorized access, interference, intrusion,
leakage and/or theft of data or information. ABB is not liable for any such damages
and/or losses.
This document has been carefully checked by ABB but deviations cannot be
completely ruled out. In case any errors are detected, the reader is kindly requested
to notify the manufacturer. Other than under explicit contractual commitments, in
no event shall ABB be responsible or liable for any loss or damage resulting from
the use of this manual or the application of the equipment.
Conformity
This product complies with the directive of the Council of the European
Communities on the approximation of the laws of the Member States relating to
electromagnetic compatibility (EMC Directive 2004/108/EC) and concerning
electrical equipment for use within specified voltage limits (Low-voltage directive
2006/95/EC). This conformity is the result of tests conducted by ABB in
accordance with the product standards EN 50263 and EN 60255-26 for the EMC
directive, and with the product standards EN 60255-1 and EN 60255-27 for the low
voltage directive. The product is designed in accordance with the international
standards of the IEC 60255 series.
Table of contents
Table of contents
Section 1 Introduction.......................................................................3
This manual........................................................................................3
Intended audience..............................................................................3
Product documentation.......................................................................4
Product documentation set............................................................4
Document revision history.............................................................4
Related documentation..................................................................5
Symbols and conventions...................................................................5
Symbols.........................................................................................5
Document conventions..................................................................6
Functions, codes and symbols......................................................6
REG630 1
Application Manual
Table of contents
Section 5 Glossary.........................................................................55
2 REG630
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1MRS757582 B Section 1
Introduction
Section 1 Introduction
This manual addresses the protection and control engineer responsible for
planning, pre-engineering and engineering.
REG630 3
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Section 1 1MRS757582 B
Introduction
Maintenance
Engineering
Planning &
Installation
Operation
purchase
Quick start guide
Quick installation guide
Brochure
Product guide
Operation manual
Installation manual
Engineering manual
Technical manual
Application manual
Communication protocol manual
Point list manual
Commissioning manual
GUID-C8721A2B-EEB9-4880-A812-849E1A42B02C V1 EN
Figure 1: The intended use of documents during the product life cycle
4 REG630
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1MRS757582 B Section 1
Introduction
1.4.1 Symbols
The tip icon indicates advice on, for example, how to design your
project or how to use a certain function.
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Section 1 1MRS757582 B
Introduction
Abbreviations and acronyms are spelled out in the glossary. The glossary also
contains definitions of important terms.
Push button navigation in the LHMI menu structure is presented by using the
push button icons.
To navigate between the options, use and .
Menu paths are presented in bold.
Select Main menu/Settings.
WHMI menu names are presented in bold.
Click Information in the WHMI menu structure.
LHMI messages are shown in Courier font.
To save the changes in non-volatile memory, select Yes and press .
Parameter names are shown in italics.
The function can be enabled and disabled with the Operation setting.
The ^ character in front of an input or output signal name in the function block
symbol given for a function, indicates that the user can set an own signal name
in PCM600.
The * character after an input or output signal name in the function block
symbol given for a function, indicates that the signal must be connected to
another function block in the application configuration to achieve a valid
application configuration.
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Introduction
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Introduction
8 REG630
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Introduction
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1MRS757582 B Section 2
REG630 overview
2.1 Overview
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IED Compare
Communication Management
Configuration Migration
The number of binary inputs and outputs depends on the amount of the optional
BIO modules selected. For a 4U IED, it is possible to take 2 additional BIO
modules at the maximum, and for a 6U IED, it is possible to take 4 additional BIO
modules at the maximum.
The mechanical design of the IED is based on a robust mechanical rack. The HW
design is based on the possibility to adapt the HW module configuration to
different customer applications.
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All external wiring, that is CT and VT connectors, BI/O connectors, power supply
connector and communication connections, can be disconnected from the IED
modules with wiring, for example, in service situations. The CT connectors have a
build-in mechanism which automatically short-circuits CT secondaries when the
connector is disconnected from the IED.
The LHMI is used for setting, monitoring and controlling the IED. The LHMI
comprises the display, buttons, LED indicators and communication port.
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GUID-35EE35A5-E661-4618-8746-6F6044E52DC9 V1 EN
Figure 2: LHMI
2.4.1 Display
The LHMI includes a graphical monochrome display with a resolution of 320 x
240 pixels. The character size can vary. The amount of characters and rows fitting
the view depends on the character size and the view that is shown.
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A071258 V2 EN
1 Path
2 Content
3 Status
4 Scroll bar (appears when needed)
The function button panel shows on request what actions are possible with the
function buttons. Each function button has a LED indication that can be used as a
feedback signal for the function button control action. The LED is connected to the
required signal with PCM600.
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GUID-6828CE38-2B88-4BB5-8F29-27D2AC27CC18 V1 EN
The alarm LED panel shows on request the alarm text labels for the alarm LEDs.
GUID-3CBCBC36-EFCE-43A0-9D62-8D88AD6B6287 V1 EN
The function button and alarm LED panels are not visible at the same time. Each
panel is shown by pressing one of the function buttons or the Multipage button.
Pressing the ESC button clears the panel from the display. Both the panels have
dynamic width that depends on the label string length that the panel contains.
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2.4.2 LEDs
The LHMI includes three protection status LEDs above the display: Ready, Start
and Trip.
There are 15 programmable alarm LEDs on the front of the LHMI. Each LED can
indicate three states with the colors: green, yellow and red. The alarm texts related
to each three-color LED are divided into three pages. Altogether, the 15 physical
three-color LEDs can indicate 45 different alarms. The LEDs can be configured
with PCM600 and the operation mode can be selected with the LHMI, WHMI or
PCM600.
2.4.3 Keypad
The LHMI keypad contains push-buttons which are used to navigate in different
views or menus. With the push-buttons you can control objects in the single-line
diagram, for example, circuit breakers or disconnectors The push-buttons are also
used to acknowledge alarms, reset indications, provide help and switch between
local and remote control mode.
The keypad also contains programmable push-buttons that can be configured either
as menu shortcut or control buttons.
GUID-35EE35A5-E661-4618-8746-6F6044E52DC9 V1 EN
Figure 6: LHMI keypad with object control, navigation and command push-
buttons and RJ-45 communication port
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The WHMI enables the user to access the IED via a web browser. The supported
Web browser versions are Internet Explorer 8.0, 9.0 and 10.0.
The menu tree structure on the WHMI is almost identical to the one on the LHMI.
A071242 V3 EN
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Locally by connecting the user's computer to the IED via the front
communication port.
Remotely over LAN/WAN.
2.6 Authorization
At delivery, logging on to the IED is not required to be able to use the LHMI. The
IED user has full access to the IED as a SuperUser until users and passwords are
created with PCM600 and written into the IED.
The available user categories are predefined for LHMI and WHMI, each with
different rights.
2.7 Communication
The IED supports communication protocols IEC 61850-8-1, IEC 60870-5-103 and
DNP3 over TCP/IP.
All operational information and controls are available through these protocols.
However, some communication functionality, for example, horizontal
communication (GOOSE) between the IEDs, is only enabled by the IEC 61850-8-1
communication protocol.
Disturbance files are accessed using the IEC 61850 or IEC 60870-5-103 protocols.
Disturbance files are also available to any Ethernet based application in the
standard COMTRADE format. The IED can send binary signals to other IEDs (so
called horizontal communication) using the IEC 61850-8-1 GOOSE (Generic
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Object Oriented Substation Event) profile. Binary GOOSE messaging can, for
example, be employed for protection and interlocking-based protection schemes.
The IED meets the GOOSE performance requirements for tripping applications in
distribution substations, as defined by the IEC 61850 standard. Further, the IED
supports the sending and receiving of analog values using GOOSE messaging.
Analog GOOSE messaging enables fast transfer of analog measurement values
over the station bus, thus facilitating for example sharing of RTD input values,
such as surrounding temperature values, to other IED applications. The IED
interoperates with other IEC 61850 compliant IEDs, tools and systems and
simultaneously reports events to five different clients on the IEC 61850 station bus.
For a system using DNP3 over TCP/IP, events can be sent to four different masters.
For systems using IEC 60870-5-103 IED can be connected to one master in a
station bus with star-topology.
All communication connectors, except for the front port connector, are placed on
integrated communication modules. The IED is connected to Ethernet-based
communication systems via the RJ-45 connector (10/100BASE-TX) or the fibre-
optic multimode LC connector (100BASE-FX).
IEC 60870-5-103 is available from optical serial port where it is possible to use
serial glass fibre (ST connector) or serial plastic fibre (snap-in connector).
The IED supports the following time synchronization methods with a timestamping
resolution of 1 ms.
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The 630 series IEDs are offered with optional factory-made preconfigurations for
various applications. The preconfigurations contribute to faster commissioning and
less engineering of the IED. The preconfigurations include default functionality
typically needed for a specific application. Each preconfiguration is adaptable
using the Protection and Control IED Manager PCM600. By adapting the
preconfiguration the IED can be configured to suit the particular application.
If none of the offered preconfigurations fulfill the needs of the intended area of
application, 630 series IEDs can also be ordered without any preconfiguration. In
this case the IED needs to be configured from the ground up.
The functional diagrams are divided into sections which each constitute one
functional entity. The external connections are also divided into sections. Only the
relevant connections for a particular functional entity are presented in each section.
Protection function blocks are part of the functional diagram. They are identified
based on their IEC 61850 name but the IEC based symbol and the ANSI function
number are also included. Some function blocks, such as PHHPTOC, are used
several times in the configuration. To separate the blocks from each other, the IEC
61850 name, IEC symbol and ANSI function number are appended with a running
number, an instance number, from one onwards.
3.1.1 Preconfigurations
Table 4: REG630 preconfiguration ordering options
Description Preconfiguration
Preconfiguration A for generator A
Number of instances available n
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Description A n
Circuit breaker failure protection 1 2
Tripping logic 1 2
Multipurpose analog protection - 16
Control
Bay control 1 1
Interlocking interface 3 10
Circuit breaker/disconnector control 3 10
Circuit breaker 1 2
Disconnector 2 8
Local/remote switch interface - 1
Synchrocheck - 1
Generic process I/O
Single point control (8 signals) - 5
Double point indication - 15
Single point indication - 64
Generic measured value - 15
Logic Rotating Switch for function selection and LHMI presentation - 10
Selector mini switch - 10
Pulse counter for energy metering - 4
Event counter - 1
Supervision and monitoring
Runtime counter for machines and devices - 1
Circuit breaker condition monitoring 1 2
Fuse failure supervision 1 1
Current circuit supervision - 2
Trip-circuit supervision 2 3
Station battery supervision - 1
Energy monitoring 1 1
Measured value limit supervision - 40
Measurement
Three-phase current measurement 1 2
Three-phase voltage measurement (phase-to-earth) - 2
Three-phase voltage measurement (phase-to-phase) 1 2
Residual current measurement 1 1
Residual voltage measurement 1 1
Power monitoring with P, Q, S, power factor, frequency 1 1
Sequence current measurement 1 1
Sequence voltage measurement 1 1
Disturbance recorder function
Table continues on next page
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Section 3 1MRS757582 B
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Description A n
Analog channels 1-10 (samples) 1 1
Analog channels 11-20 (samples) - 1
Analog channels 21-30 (calc. val.) - 1
Analog channels 31-40 (calc. val.) - 1
Binary channels 1-16 1 1
Binary channels 17-32 1 1
Binary channels 33-48 1 1
Binary channels 49-64 1 1
Station communication (GOOSE)
Binary receive - 10
Double point receive - 32
Interlock receive - 59
Integer receive - 32
Measured value receive - 60
Single point receive - 64
n = total number of available function instances regardless of the preconfiguration selected
1, 2, ... = number of included instances
3.2.1 Application
The preconfiguration A is designed to be used for protecting generator units which
are grounded through NGR. Typically, it protects a diesel generator set or an
embedded power generation plant. The generator is connected to a busbar system
with a truck circuit breaker.
The IED controls the circuit breaker apparatus. The switching of a NGR is not
governed by the IED. Similarly, the earth switch is considered to be operated
manually. The open, close and undefined status of the circuit breaker, NGR and
earth switch are indicated on the LHMI.
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1MRS757582 B Section 3
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Disturbance recorders
LED configurations
Measurement functions
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Section 3 1MRS757582 B
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3.2.2 Functions
1 1 U<>
3I> 3I>> U<>
51P-1 51P-2
Io 1 1
Io> Io> Object Ctrl 2) - I, U, Io, Uo, P, Q, E, pf, f
67N-1 67N-2 - Sequence current/voltage measurement
3I CB 2 - Limit value supervision
Uo DC - RTD/mA measurement (optional)
8
ES Analog interface types B
1)
Check availability of binary inputs/outputs Current transformer 7
2 2 2 1 2 2
from technical documentation
3U< 3U> Uo> f> 2)
Control and indication function for Voltage transformer 3
27 59 59G 81O primary object
Io 2 2 2 2
df/dt> f< SYNC
81R 81U 25
2 2
Z<GT U/f> dUo(3H)>/Uo(3H)<
21GT 24 27/59THD
3 2 2
U<RT Q>, 3U< U2>
27RT 32Q, 27 47O-
2 2
U1> U1< Io>>> 3I>>>
47O+ 47U+ 50N/51N 50P/51P
2
Io> Io>> Io>R 3I>
51N-1 51N-2 64R 67-1
3I>> 3I2f> VS
67-2 68 78V
REMARKS
GUID-73E671D3-F46A-4778-8A7E-03AAED8AAACA V1 EN
26 REG630
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The IED outputs are categorized as power outputs (POx) and signal outputs (SOx).
The power outputs can be used for starting and stopping the motor. The signal
outputs are not heavy-duty outputs. They are used for alarm or signalling purposes.
The IED measures the analog signals needed for protection and measuring
functions via galvanically-isolated matching transformers. The matching
transformer input channels 17 are intended for current measuring, and the
channels 8...10 for voltage measuring.
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A fixed signal block providing logical TRUE and FALSE output is used, and
connected internally to other functional blocks as needed.
Bay control is used for handling the selection of the operator place per bay. It
provides blocking functions that can be distributed to different apparatus within a
bay. Bay control sends information about the PSTO and blocking conditions to
other functions within the bay, such as to switch control functions.
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Apparatus control initializes and supervises the proper selection and switches on
primary apparatus. Each apparatus requires an interlocking function, switch control
function and apparatus functions.
The position information of the circuit breaker and the truck is connected to
DAXCBR. The interlocking logics for the circuit breaker is programmed to open at
any time. The configuration is designed so that the direct closing of the breaker is
prevented from the IED (as this is done after synchronisation in most of the cases).
However, the configuration provides a circuit breaker closing enable signal at the
binary output PO2 after evaluating certain conditions, that is, ensuring that the gas
pressure inside the circuit breaker is sufficient, the spring charge time is below the
set limit, and the earthing switch is in open position when the truck is in close
position. This enables using the binary output PO2 externally along with the
synchronizer for closing circuit breaker.
The SCILO function checks for the interlocking conditions and provides closing
and opening enable signals. The enable signal is used by the GNRLCSWI function
block which checks for operator place selector before providing the final open or
close signal to the DAXCBR function.
The open, closed and undefined states of the circuit breaker are indicated on the
LHMI.
The earthing switch control function is used for earthing switch position indication.
The IED is not used to control the switching of the earthing switch in this
configuration.
The earth-switch control function is used for position indication of the NGR
switch. However, the IED is not used to control the switching of the NGR in this
configuration.
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GUID-C04152E8-B6B0-41D6-83EC-35CA7021F4AA V1 EN
30 REG630
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Stabilized three-phase differential protection with low (biased) stage and high
(instantaneous) stage is used for protecting a generator against winding failure. The
function includes a DC restraint feature. This feature temporarily decreases the
sensitivity of the differential protection to avoid unnecessary disconnection of the
generator when DC current is detected. The function also includes a CT saturation
based blocking.
The set of three phase currents from the line side I3P, neutral side I3P_N, and the
three phase voltages U3P are connected to the inputs.
The operate signal from the low and high stages provides a LED indication on the
LHMI. The low stage and high stage operate outputs are connected to the
disturbance recorder.
L1
L2
L3
I
0 AIM
0 X101
P1
1
IL1
S1 2
3 THERMAL OVERLOAD PROTECTION
S2
IL2 3I
4
5
P2
6
IL3 T2PTTR(1)
30>G
7
49T/49G
Io 3I OPERATE
COMMON
8
OPERATE
9
IL1
BLK_OPR ALARM COMMON
10 START
P1 S1
S2
P2
G
AIM
X102 IL1
S1
1
S2
IL2 3I_N
2
3 PSM
IL3 X327
4
P1 S1 PO5
S2
9
P2
10
MPDIF(1)
I>M
87G/87M
3I I3P1 OPERATE COMMON
OPERATE
3I_N I3P2
5
U1 3U U3P INT_BLKD DIFF_BLKD
6
BLOCK
7
U2 3U
8
9
U3
10
GUID-E47AA21C-EDED-4440-8385-B4BDE23114FF V1 EN
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The three-phase thermal overload protection function is used for thermal protection
of generators. The function has adjustable temperature limits for tripping, alarm
and reclose inhibit. The applied thermal model uses two time constants and a true
RMS current measuring principle. A set of three phase currents, I3P, is connected
to the inputs.
The thermal overload alarm and trip signals provide a LED indication on the
LHMI. The thermal overload alarm and thermal overload trip are also connected to
the disturbance recorders, as well as to common start and common operate
respectively.
A common operate and start signal from the both non-directional overcurrent
functions is connected to an OR-gate to form a combined non-directional
overcurrent operate and start signal which provides a LED indication on the LHMI.
Also a separate start and operate signal from the both overcurrent functions is
connected to the disturbance recorder.
A common operate and start signal from the both negative-sequence overcurrent
functions is connected to an OR-gate to form a combined negative-sequence
overcurrent operate and start signal, which is used for providing a LED indication
on the LHMI. Also a separate start and operate signal from the both MNSPTOC
functions is connected to the disturbance recorder.
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PHPVOC(1)
I(U)>
51V
3I START
3U OPERATE
FUSE_FAILURE BLOCK
ENA_MULT
COMMON
OR OPERATE
PHPVOC(2)
I(U)>
51V
3I START
3U OPERATE
FUSE_FAILURE BLOCK
ENA_MULT
PHLPTOC(1)
3I>
51P-1
3I_N START
BLOCK OPERATE
ENA_MULT
COMMON
OR OPERATE
PHHPTOC(1)
3I>>
51P-2
3I_N START
BLOCK OPERATE
ENA_MULT
46G/46M
3I_N START
BLOCK OPERATE
ENA_MULT
COMMON
OR OPERATE
MNSPTOC(2)
I2 >
46G/46M
3I_N START
BLOCK OPERATE
ENA_MULT
GUID-C23D57F9-CE42-4F19-870D-6A05053411DC V1 EN
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A common operate and start signal from the both voltage-dependent overcurrent
functions is connected to an OR-gate to form a combined operate and start signal,
which provides a LED indication on the LHMI. Also a separate start and operate
signal from the both voltage-dependent overcurrent functions is connected to the
disturbance recorder.
The directional earth-fault protection functions are used for directional and non-
directional earth-fault protection with DT or IDMT characteristic when appropriate.
The configuration includes the high and low variants of the directional earth-fault
protection function. The configuration is developed considering that the core
balance CT is provided both on line- and neutral-side of the generator. The
differential current of the two neutral currents is made externally, and the resultant
Io current is connected to the IEDs. The set of three-phase voltage and
differential neutral current, U3P and DIFF_Io, are connected to the inputs.
A common operate and start signal from both the directional earth-fault functions
and residual overvoltage protection are connected to an OR-gate to form a
combined earth-fault operate and start signal, which provides a LED indication on
the LHMI. Also separate start and operate signals from the both directional earth-
fault functions are connected to the disturbance recorder.
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DEFLPDEF(1)
I0 >
67N-1
I0 START
U0 OPERATE
FUSE_FAILURE BLOCK
ENA_MULT
RCA_CTL
DEFHPDEF(1)
I 0 >>
67N-2
I0 START
U0 OPERATE
FUSE_FAILURE BLOCK
ENA_MULT
RCA_CTL
59G
3U START
ROVPTOV(2)
U0 >
59G
3U START
GUID-C4EFC490-502C-4B27-A542-1CB2C078A7EB V1 EN
A common operate and start signal from both residual overvoltage protection
functions and directional earth fault signals is connected to an OR-gate to form a
combined operate and start signal which provides a LED indication on the LHMI.
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Also a separate start and operate signal from both instances is connected to the
disturbance recorder.
A common operate and start signal from the both phase overvoltage protection
functions are connected to an OR-gate to form a combined phase overvoltage
operate and start signal which provides a LED indication on the LHMI. Also a
separate start and operate signal from the both instances is connected to the
disturbance recorder.
The configuration includes two instances of undervoltage function blocks. The set
of three phase voltages, U3P is connected to the inputs. The undervoltage function
is blocked by the fuse failure function.
A common operate and start signal from the both phase undervoltage protection
functions is connected to an OR-gate to form a combined phase undervoltage
operate and start signal, which provides a LED indication on the LHMI. Also a
separate start and operate signal from the both instances is connected to the
disturbance recorder.
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PHPTUV(1)
3U<
27
3U START
PHPTUV(2)
3U<
27
3U START
FUSE_FAILURE COMMON
BLOCK OPERATE OR OPERATE
PHPTOV(1)
3U>
59
3U START
BLOCK OPERATE
PHPTOV(2)
3U>
59
3U START
COMMON
BLOCK OPERATE OR
OPERATE
GUID-76AA70CF-0312-4163-96D9-2883C9CDAB00 V1 EN
A common operate and start signal from the both overfrequency protection
functions is connected to an OR-gate to form a combined overfrequency operate
and start signal, which provides a LED indication on the LHMI. Also a separate
start signal from the both instances is connected to the disturbance recorder.
However, the operate signal from both stages is connected to the OR-gate to form a
combined overfrequency operate signal, and connected to the disturbance recorder.
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A common operate and start signal from the both underfrequency protection
functions is connected to an OR-gate to form a combined underfrequency operate
and start signal, which provides a LED indication on the LHMI. Also a separate
start signal from both instances is connected to the disturbance recorder. However,
the operate signal from both stages is connected to OR-gate to form a combined
underfrequency operate signal, and connected to the disturbance recorder.
The function is blocked when the generator circuit breaker is in open position.
A common operate and start signal from the both frequency gradient protection
functions is connected to an OR-gate to form a combined frequency gradient
operate and start signal, which provides a LED indication on the LHMI. Also a
separate start signal from the both instances is connected to the disturbance
recorder. However, the operate signal from both stages is connected to the OR-gate
to form a combined frequency gradient operate signal, and connected to the
disturbance recorder.
The function is blocked when the generator circuit breaker is in open position.
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GUID-2A5A8599-7C41-4BD3-8F3A-4A900D35F57D V1 EN
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Section 3 1MRS757582 B
REG630 variants
A common operate and start signal from the both underexcitation protection
functions is connected to an OR-gate to form a combined underexcitation operate
and start signal, which provides a LED indication on the LHMI. Also a separate
start and operate signal from the both instances is connected to the disturbance
recorder.
The function is blocked when the generator circuit breaker is in open position or
fuse failure is detected.
GUID-571FC965-4B33-4CCA-ABA8-E8DB791314F9 V1 EN
A common operate and start signal from the both reverse power/directional
overpower protection functions is connected to an OR-gate to form a combined
directional overpower operate and start signal, which provides a LED indication on
the LHMI. Also a separate start signal from the both instances is connected to the
disturbance recorder. However, the operate signal from the both stages is
connected to the OR-gate to form a combined directional overpower operate signal,
and connected to the disturbance recorder.
40 REG630
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1MRS757582 B Section 3
REG630 variants
Underpower protection is used for protecting the generator from very low power
output conditions. Two instances of the underpower protection functions are used
with DT characteristics. A set of three phase currents and voltages, I3P and U3P, is
connected to the inputs.
A common operate and start signal from the both underpower protection functions
is connected to an OR-gate to form a combined underpower operate and start signal
which provides a LED indication on the LHMI. Also a separate start signal from
the both instances is connected to the disturbance recorder. However, the operate
signal from the both stages is connected to the OR-gate to form a combined
underpower operate signal, and connected to the disturbance recorder.
GUID-03C15108-5D59-4E03-8E9C-5496E425B51C V1 EN
REG630 41
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Section 3 1MRS757582 B
REG630 variants
The start and operate signals from the both underpower protection
instances are used only for alarm purposes, not for tripping the
generator circuit breaker.
The function is activated by the common operate command from the protection
functions. The breaker failure function issues a retrip command to Master trip 2 if
the Master trip 1 fails to trip the protected component. A set of three-phase neutral
side current, I3P_N is connected to the input.
Tripping logic provides a tripping signal of required duration to the Master trip 1
and Master trip 2 circuits. The Master trip 1 opens the circuit breaker on a receipt
of operate signal from the protection function, whereas the Master trip 2 opens the
circuit breaker on a receipt of operate signal from the protection function, or a
retrip signal from the circuit breaker failure protection.
Two master tripping signals are available at binary output PSM PO1 and PSM
PO3. The lockout reset binary input available at COM BI10 is connected to the
tripping circuit to reset the circuit-breaker lockout function.
42 REG630
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1MRS757582 B Section 3
REG630 variants
MASTER TRIP
TRPPTRC(1)
PO1 PSM
BLOCK TRIP
TRPPTRC(2)
COMMON OPERATE 5 Open CB
OR BLOCK TRIP
TCS3
CBFP_RETRIP OPERATE CL_LKOUT 6
RST_LKOUT
CCBRBRF
3I> / I0 > BF
13
SO1 Common operate
COMMON OPERATE 14
COM
X304
PSM
AVR Trip 9 BI 07
COMMON X327
OR
OPERATE
6 15
BI 08
SO2 Common start
Turbine trip 10
COMMON START 16
GUID-2E7633C0-AA19-46E1-804B-24A6E1EE9825 V1 EN
The operate outputs of all the protection functions (except for underpower
protection), and the external trip from AVR and turbine are combined in the OR-
gate to get a common Operate output. In addition, the activation of binary input
COM101.BI12, that is, the low pressure lockout will also trip the generator circuit
breaker. This common operate signal is connected to a tripping logic. It is also
available as an alarm binary output, PSM SO1, with a settable minimum alarm
delay of 80 ms.
Similarly, a common Start output is derived from the start outputs of all the
protection functions (except for underpower protection) combined in an OR-gate.
The output is available as an alarm binary output PSM SO2 with a settable
minimum alarm delay of 80 ms.
These combined operate and start signals are also connected to trigger the
disturbance recorder.
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Section 3 1MRS757582 B
REG630 variants
All these outputs are available with a settable minimum alarm delay of 80 ms.
Two instances of the trip circuit supervision function are used for supervising
Master trip 1 and Master trip 2. The function continuously supervises the trip
circuit and alarms in case of failure. The function block does not perform the
supervision itself but it is used as an aid for configuration. To prevent unwanted
alarms, the function is blocked when any of the protection function's operate
signals is active, or when the circuit breaker is in open position.
The alarms due to trip circuit failure and GCB monitoring functions are combined
and available at LED alarms, and to binary recorder.
The fuse failure supervision function gives an alarm in case of open secondary
circuits between the voltage transformer and the IED respectively. A set of three
phase currents and voltages, I3P_N and U3P, are connected to the inputs.
A LED alarm is available for secondary circuit failures. The alarm is also recorded
by a disturbance recorder.
The circuit-breaker condition monitoring function checks for the healthiness of the
circuit breaker. The circuit breaker status is connected to the function via binary
inputs. The function requires also a pressure lockout input and a spring-charged
input to be connected via binary input COM_101.BI12 and COM_101.BI13
respectively.
44 REG630
Application Manual
1MRS757582 B Section 3
REG630 variants
GUID-85906713-A734-4EAC-AF35-0E40BA55AA72 V1 EN
Current
Voltage
Current sequence component
Voltage sequence component
Residual current
Residual voltage
Power
Frequency
Energy
The measured quantities can be viewed in the measurement menu on the LHMI.
All analog input channels are connected to the analog disturbance recorder. When
any of these analog values violate the upper or lower threshold limits, the recorder
unit is triggered which in turn will record all the signals connected to the recorder.
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Section 3 1MRS757582 B
REG630 variants
GUID-AC75BF4F-D96B-4B06-B990-4FD23C4CE452 V1 EN
46 REG630
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1MRS757582 B Section 3
REG630 variants
REG630 47
Application Manual
Section 3 1MRS757582 B
REG630 variants
Channel ID Description
Channel 33 Operate of residual overvoltage protection stage 2
Channel 34 Start of underfrequency protection stage 1
Channel 35 Start of underfrequency protection stage 2
Channel 36 Combined operate of underfrequency protection
Channel 37 Start of overfrequency protection stage 1
Channel 38 Start of overfrequency protection stage 2
Channel 39 Combined operate of overfrequency protection
Channel 40 Start of rate of change of frequency protection stage 1
Channel 41 Start of rate of change of frequency protection stage 2
Channel 42 Combined operate of rate of change of frequency protection
Channel 43 Start of underexcitation protection stage 1
Channel 44 Operate of underexcitation protection stage 1
Channel 45 Start of underexcitation protection stage 1
Channel 46 Operate of underexcitation protection stage 1
Channel 47 Start of directional overpower protection stage 1
Channel 48 Operate of directional overpower protection stage 1
Channel 49 Start of directional overpower protection stage 2
Channel 50 Operate of directional overpower protection stage 2
Channel 51 Start of underpower protection stage 1
Channel 52 Operate of underpower protection stage 1
Channel 53 Start of underpower protection stage 2
Channel 54 Operate of underpower protection stage 2
Channel 55 Combined CB Supervision alarm
Channel 56 Generator circuit breaker closed
Channel 57 Generator circuit breaker opened
Channel 58 Backup trip from circuit breaker failure protection
Channel 59 Retrip from circuit breaker failure protection
Channel 60 Voltage transformer MCB Open
Channel 61 Fuse failure
Channel 62 External trip command
Channel 63 Combine start
Channel 64 Combine operate
48 REG630
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1MRS757582 B Section 3
REG630 variants
REG630 49
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Section 3 1MRS757582 B
REG630 variants
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1MRS757582 B Section 4
Requirements for measurement transformers
The selection of a CT depends not only on the CT specifications but also on the
network fault current magnitude, desired protection objectives, and the actual CT
burden. The protection settings of the IED should be defined in accordance with
the CT performance as well as other factors.
The rated accuracy limit factor (Fn) is the ratio of the rated accuracy limit primary
current to the rated primary current. For example, a protective current transformer
of type 5P10 has the accuracy class 5P and the accuracy limit factor 10. For
protective current transformers, the accuracy class is designed by the highest
permissible percentage composite error at the rated accuracy limit primary current
prescribed for the accuracy class concerned, followed by the letter "P" (meaning
protection).
Table 14: Limits of errors according to IEC 60044-1 for protective current transformers
Accuracy class Current error at Phase displacement at rated primary Composite error at
rated primary current rated accuracy limit
current (%) minutes centiradians primary current (%)
5P 1 60 1.8 5
10P 3 - - 10
The accuracy classes 5P and 10P are both suitable for non-directional overcurrent
protection. The 5P class provides a better accuracy. This should be noted also if
there are accuracy requirements for the metering functions (current metering,
power metering, and so on) of the IED.
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Section 4 1MRS757582 B
Requirements for measurement transformers
The CT accuracy primary limit current describes the highest fault current
magnitude at which the CT fulfils the specified accuracy. Beyond this level, the
secondary current of the CT is distorted and it might have severe effects on the
performance of the protection IED.
In practise, the actual accuracy limit factor (Fa) differs from the rated accuracy
limit factor (Fn) and is proportional to the ratio of the rated CT burden and the
actual CT burden.
Sin + Sn
Fa Fn
Sin + S
A071141 V1 EN
The nominal primary current I1n should be chosen in such a way that the thermal
and dynamic strength of the current measuring input of the IED is not exceeded.
This is always fulfilled when
The saturation of the CT protects the measuring circuit and the current input of the
IED. For that reason, in practice, even a few times smaller nominal primary current
can be used than given by the formula.
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1MRS757582 B Section 4
Requirements for measurement transformers
The factor 0.7 takes into account the protection IED inaccuracy, current
transformer errors, and imperfections of the short circuit calculations.
The adequate performance of the CT should be checked when the setting of the
high set stage overcurrent protection is defined. The operate time delay caused by
the CT saturation is typically small enough when the overcurrent setting is
noticeably lower than Fa.
When defining the setting values for the low set stages, the saturation of the CT
does not need to be taken into account and the start current setting is simply
according to the formula.
With definite time mode of operation, the saturation of CT may cause a delay that
is as long as the time the constant of the DC component of the fault current, when
the current is only slightly higher than the starting current. This depends on the
accuracy limit factor of the CT, on the remanence flux of the core of the CT, and
on the operate time setting.
With inverse time mode of operation, the delay should always be considered as
being as long as the time constant of the DC component.
With inverse time mode of operation and when the high-set stages are not used, the
AC component of the fault current should not saturate the CT less than 20 times the
starting current. Otherwise, the inverse operation time can be further prolonged.
Therefore, the accuracy limit factor Fa should be chosen using the formula:
The Current start value is the primary start current setting of the IED.
The following figure describes a typical medium voltage feeder. The protection is
implemented as three-stage definite time non-directional overcurrent protection.
REG630 53
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Section 4 1MRS757582 B
Requirements for measurement transformers
A071142 V1 EN
The maximum three-phase fault current is 41.7 kA and the minimum three-phase
short circuit current is 22.8 kA. The actual accuracy limit factor of the CT is
calculated to be 59.
The start current setting for low-set stage (3I>) is selected to be about twice the
nominal current of the cable. The operate time is selected so that it is selective with
the next IED (not visible in the figure above). The settings for the high-set stage
and instantaneous stage are defined also so that grading is ensured with the
downstream protection. In addition, the start current settings have to be defined so
that the IED operates with the minimum fault current and it does not operate with
the maximum load current. The settings for all three stages are as in the figure above.
For the application point of view, the suitable setting for instantaneous stage (I>>>)
in this example is 3 500 A (5.83 x I2n). For the CT characteristics point of view, the
criteria given by the current transformer selection formula is fulfilled and also the
IED setting is considerably below the Fa. In this application, the CT rated burden
could have been selected much lower than 10 VA for economical reasons.
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1MRS757582 B Section 5
Glossary
Section 5 Glossary
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Section 5 1MRS757582 B
Glossary
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