Numerical Protection Relay

GR-Series
POWER SYSTEM PROTECTION
GRZ 100 Distance Protection
GRL 100 Line Differential Protection
GRT 100 Transformer Protection
GRB 100 Low-Impedance Busbar Protection
GRB 150 High-Impedance Differential
GRF 100 Frequency Protection
GRC 100 Circuit Breaker Failure Protection
GRR 100 Autorecloser
DISTRIBUTION SYSTEM PROTECTION
GRD 110 Overcurrent Protection
GRD 120 Overcurrent with Autoreclose
GRD 130 Under/Overvoltage Protection
GRD 140 Directional Overcurrent Protection
GRD 150 Feeder Manager Relay
 GR-Series
Numerical Protection Relay
POWER SYSTEM PROTECTION
GRZ100 Distance Protection
GRL100 Line Differential Protection
GRT100 Transformer Protection
GRB100 Low-Impedance Busbar Protection
GRB150 High-Impedance Differential
GRF100 Frequency Protection
GRC100 Circuit Breaker Failure Protection
GRZ100 GRR100 Autorecloser

DISTRIBUTION SYSTEM PROTECTION

GRD110 Overcurrent Protection
GRD120 Overcurrent with Autoreclose
GRD130 Under/Overvoltage Protection
GRD140 Directional Overcurrent Protection
GRD150 Feeder Manager Relay
GRD110

GRD150

1
 FEATURES
Fully numerical protection relay Metering and recording functions
High performance Metering of electrical values
High speed operation Fault records
Improved selectivity and stability Disturbance records
Multi-functions Event records
High reliability Configurable binary outputs
Automatic supervision Menu-driven human interfaces
Fault Detector (Option) Two serial ports for a local PC
Low cost and a remote PC
Low power consumption IRIG-B port for external clock
Compact size (except GRD110-150)

PRODUCT LINE-UP
GR-Series offers the solution for protection of power transmission and distribution systems.
Multi - Function relays
Type Description
GRZ100 Distance Relay
GRL100 Line Differential Relay
GRL100-212W Line Differential Relay With GPS Synchronisation
GRB100 Low Impedance Type Busbar Protection
GRT100 Transformer Protection

Simple-Function relays
Type Description
GRB150 High Impedance Differential Relay
GRR100 Autorecloser
GRC100 Circuit Breaker Failure Protection
GRF100 Frequency Protection

Distribution System Protection Relays

Type Description
GRD110 Overcurrent Protection
GRD120 Overcurrent Protection With Autoreclose
GRD130 Under/Overvoltage Protection
GRD140 Directional Overcurrent Protection
GRD150 Feeder Manager Relay
2
 GR-Series
Features of Multi Function Relays
GRZ100 GRL100 GRL100-212W GRT100 GRB100
Application
Distance Protection
Current Differential Protection
Transformer/Reactor Protection
Busbar Protection
21 Distance, Phase fault
21N Distance, Earth fault
Command Protection PUP, POP, UOP, BOP
87 Phase-segregated differential
87N Zero-sequence differential
GPS-based synchronized sampling
87T Current differential with stability
against inrush and overexcitation
87H High-set differential overcurrent
REF Restricted earth fault
87B Current differential with
stability against CT saturation
Check zone element and discriminating zone element
51 Phase fault Time-O/C
51N Earth fault Time-O/C
50 Phase fault O/C
50N Earth fault O/C
67N Directional Earth fault DEF
DEF using telecommunication
50BF Breaker Failure Protection
49 Thermal overload
81 Overfrequency, Underfrequency
24 Overexcitation
Out of step trip
Switch on to fault
Stub Protection
Power swing block
27Z Phase selection element
Broken conductor detection
85 Direct inter tripping
VT failure supervision
79 Autoreclosing(Single, Multi-pole)
25 Synchronism check
Fault detector
Fault location
Metering & Monitoring
Disturbance record
Event record
Fault record
Front : RS232C
Communication port
Rear : RS485
IRIG-B port
Standard Model option

3
Features of Simple Function Relays
GRB150 GRC100 GRF100 GRR100
Application
Busbar Protection
Circuit Breaker Failure Protection
Restricted Earth Fault
Frequency, voltage relay
Autorecloser
87 High-impedance differential
50BF Breaker Failure Protection
81 Underfrequency/ Overfrequency
Frequency rate-of-change
27 Undervoltage
59 Overvoltage
79 Autoreclosing
25 Synchronism check
Metering & Monitoring
Disturbance record
Event record
Fault record
Front : RS232C
Communication port
Rear : RS485
IRIG-B por
Standard Model option
Features of Distribution System Protection
GRD110 GRD120 GRD130 GRD140 GRD150
50P/51P Phase Fault O/C
50N/51N Earth Fault O/C
50N/51N Sensitive Earth Fault
37P Phase Undercurrent
49 Thermal Overload
46 NPS Overcurrent IDMTL, DTL
Broken Conductor
50BF Circuit Breaker Fail
Cold Load Protection
59 Phase O/V IDMTL, DTL
27 Phase U/V IDMTL, DTL
59N ZPS O/V IDMTL, DTL
47 NPS O/V IDMTL, DTL
67 Directional Phase Fault O/C IDMTL, DTL
67N Directional Earth Fault O/C IDMTL, DTL
67N Directional SEF IDMTL, DTL
67/46 Directional NPS Overcurrent IDMTL, DTL
51V Voltage Controlled Overcurrent
81U/81O Under/Overfrequency
79 Autoreclose
25 Synchronism check
Fault Locator
CT Supervision
VT Supervision
Trip circuit supervision
Self supervision
CB State Monitoring
Trip Counter Alarm
Iy Alarm
CB Operate Time Alarm
Multi settings groups
Circuit Breaker Control and Monitoring
Disconnect Control and Monitoring
Earthing switch Control and Monitoring
MIMIC Display
Metering
Fault records
Event records
Disturbance records
Communication port RS232C, RS485/Opt IEC60870-5-103
Standard Model option
4
 GR-Series
APPLICATION EXAMPLES

Transmission line

GRZ100

EHV GRL100, GRZ100

GRL100 Line protection
GRC100
Breaker failure protection
GRB150
GRT100
Transformer protection or
Reactor protection
GRC100 GRB150
Busbar protection
(High-impedance differential)
GRB150
GRB100
Busbar protection
(Low-impedance differential)
GRD110-140
Feeder protections
GRD150
GRT100 GRT100 Feeder manager relay

GRB150

GRD130

HV GRT100 LV

GRD150
GRD110
GRL100 or GRD140
or GRD120
GRB100
GRZ100

Transmission line Distribution feeder

5
 HARDWARE METERING AND RECORDING

Figure 1 shows the hardware block diagram of the relay. Metering and Monitoring
The relay has a multiple microprocessor design. The The following power system data is an example of what is
microprocessors perform the software functions such as signal measured continuously and displayed on the LCD, on the relay
processing, protection algorithm, scheme logic, output relay fascia, at the local PC, and the remote PC when connected.
control and handling of the human interface. - Voltages (phase, phase to phase, symmetrical components)
Analog inputs include phase current inputs, residual current - Currents (phase, phase to phase, symmetrical components)
inputs and phase voltage inputs. The number of analog inputs - Active power and reactive power
depends on the type of the relay. - Frequency
The internal auxiliary transformers are used to isolate, step down
and condition the inputs from the VT and CTs. Their output Currents and voltages can be indicated as primary or secondary
signals are then converted into digital data for further processing. values. Active power and reactive power are indicated as
The front panel contains a liquid crystal display (LCD) and primary values.
pushbutton keys to provide local access to the relay menu. There It depends on the type of the relay which power system data
are also light emitting diodes (LED) for visual indication of the could be measured and displayed.
status of the relay.
The relay provides three communication ports, RS232C for The user can monitor the following output and status indications
connection of a local PC, RS485 for a remote PC and IRIG-B for on the LCD and at local/remote PCs.
an external clock. - Relay element output
(GRD110-150 do not provide IRIG-B port.) - Binary input/output

Event Record
Signal Binary input
Transformer processing output The most recent 96 time-tagged events are stored with 1ms
module module module resolution.
-DC/DC DC supply Events recorded are as follows.
converter - Tripping operations
Current -CT -Analog filter -Binary input Input
- Alarms
Voltage -VT -A/D converter -Binary output
(trip) Output - Change of state of binary inputs/outputs
External -IRIG-B -MPU
clock -Binary output - Change of relay setting
(signal) Remote PC
- Failure detected by automatic supervision
-RS485

Fault Record
-LCD
A relay trip initiates fault recording. Records are stored for the 8
Human most recent faults, time-tagged to 1ms resolution. The fault
-LED
machine
-Operation key interface record is available on the relay fascia LCD and at a local or
Local PC
-RS232C I/F remote PC. Fault records include the following data:
Date and time of trip operation.
Fig.1 Hardware block diagram Operating phase.
Protection scheme responsible for trip.
The terminal blocks are located at the rear of the relay providing Measured current data.
connections for all input and output circuits.
Disturbance Record
The relay can record 8 analog and 32 binary signals, initiated by
relay tripping. The post-trigger recording time can be set, and
the maximum number of records which can be stored is
dependent on the recording time chosen.

Calendar and Time

The relay provides a date and time for tagging of records.
6
 GR-Series
USER INTERFACE

Relay Front Panel

A user friendly interface is provided on the relay front panel. A
menu-based system provides for easy programming of relay
functions and access to real-time and stored data. The front
panel includes LCD with backlight, LEDs, operation keys and
RS232C port for a local PC.

Local PC Connection
The user can communicate with the GR-relay from a local PC
via the RS232C port on the front panel. Using RSM100 software,
the user can view and modify settings, monitor real-time
metering and analyse recorded data.

Remote Setting and Monitoring (RSM)

GR-relays can be connected to the RSM system via the rear
mounted serial communications port, using either RS485 or fibre
optic connections (specified at time of order). Using RSM100
software, the user can view and modify settings, monitor real-
time metering and analyse recorded data.
A maximum of 32 relays can be connected to the remote PC in
multi-drop mode, through a protocol converter, with a maximum
data transmission rate of 64kbps. GR-relays are compliant with
the IEC60870-5-103 transmission protocol.
The figures below show the configuration of the RSM system and
typical displays from the RSM100 software.

MENU MENU
1= 2= 1= 2=
3= 4= 3= 4=
5= 5=

IN SERVICE VIEW IN SERVICE VIEW

TRIP TRIP
ALARM ALARM
TESTING TESTING

RISET RISET

7 8 9 7 8 9
4 5 6 4 5 6
A B OV
1 2 3 A B OV
1 2 3
A B OV A B OV
0 . 0 .
ENTER END CANCEL ENTER END CANCEL

7
 PC DISPLAY

Vector record

Metering

Event record Data analysis

Relay Setting
The user can input or change settings using the operation keys
on the relay fascia or via a local or remote PC with the RSM
system.
Password protection is provided to change settings.
Four to eight active setting groups are provided.
The number of setting groups depends on the relay type.

Configurable Binary Output Contacts

GR-relays provide programmable binary output contacts. The
number of outputs varies according to the relay type.

Fault record Binary Inputs

GR-relays provide programmable binary inputs.
The number of inputs varies according to the relay type.

8
 GR-Series
TYPICAL TECHNICAL DATA

The following data varies according to the relay type. The detailed data could be referred to each brochure
of the relay type.
Ratings
AC current In: 1A or 5A
AC voltage Vn : 100V, 110V, 115V, 120V
Frequency: 50Hz or 60Hz
DC auxiliary supply: 110/125Vdc (Operative range: 88 - 150Vdc),
220/250Vdc (Operative range: 176 - 300Vdc),
48/54/60Vdc, (Operative range: 38.4 - 72Vdc)
Superimposed AC ripple on DC supply: 12%
DC supply interruption: 50ms at 110V
Binary input circuit DC voltage: 110/125Vdc (Operative range: 88 - 150Vdc),
220/250Vdc (Operative range: 176 - 300Vdc),
48/54/60Vdc, (Operative range: 38.4 - 72Vdc)
Burden
AC phase current inputs: 0.1VA (1A rating)
0.3VA (5A rating)
AC earth current inputs: 0.1VA (1A rating)
0.3VA (5A rating)
DC power supply: 10-16W (quiescent)
15-25W (maximum)
Binary input circuit: 0.5W per input at 110Vdc
Communication port - local PC (RS232) Communication port - local PC (RS232)
Connection: Point to point
Cable type: Multi-core (straight)
Cable length: 15m (max.)
Connector: RS232C 9-way D-type female
Communication port - remote PC (RS485)Communication port - remote PC (RS485)
Connection: Multidrop (max. 32 relays)
Cable type: Twisted pair
Cable length: 1200m (max.)
Connector: Screw terminals
Isolation: 1kVac for 1 min.
Transmission rate: 64kpbs for RSM system
9.6, 19.2kbps for IEC60870-5-103
Communication port - remote PC (Fibre Optic for IEC60870-5-103)
Cable type: 50/125 or 62.5/125 m fibre
Cable length: 2km (max.)
Connector: ST
Transmission rate: 9.6, 19.2kbps for IEC60870-5-103

RELAY OUTLINE

TYPE DESCRIPTION RELAY CASE

GRZ100 Distance Relay A or B
GRL100 Line Differential Relay A or B
GRL100-212W Line Differential with GPS Synchronisation B
GRB100 Low Impedance Type Busbar Protection A or B
GRT100 Transformer Protection A
GRB150 High Impedance Differential Relay C
GRR100 Autorecloser C
GRC100 Circuit Breaker Failure Protection C
GRF100 Frequency / Voltage Protection C
GRD110 Overcurrent Protection D
GRD120 Overcurrent Protection with Autoreclose D
GRD130 Under/ Overvoltage Protection D
GRD140 Directional Overcurrent Protection D
GRD150 Feeder Manager Relay E
9
 MENU
1= 2=
3= 4=
5=

IN SERVICE VIEW
TRIP
ALARM
TESTING

RISET
266

7 8 9
4 5 6
A B OV
1 2 3
0 .
ENTER END CANCEL

254 276.2 32

LINE DIFFERENTIAL PROTECTION

IN SERVICE VIEW
TRIP
ALARM
TESTING

RISET 266

7 8 9
4 5 6
A B C
1 2 3
0 .
ENTER END CANCEL

345.4
364 276.2 32

IN SERVICE VIEW
TRIP
ALARM
ALARM
TESTING

RISET
258 258

A B OV
CANCEL ENTER

END

104 243.5 32 104 185.2 32

15.6 15.6

FEEDER MANAGER
IN SERVICE
ALARM
TRIP
TEST

LOCAL 266
L/R SELECT VIEW

REMOTO

ENTER RISET

END
A B OV
CANCEL

F1 F2

254 30 205 30

10
 GR-Series
Numerical Protection Relay

Industrial and Power Systems & Services Company

1-1,SHIBAURA 1-CHOME,MINATO-KU, TOKYO 105-8001,JAPAN
PHONE;+81-3-3457-3644 FAX;+81-3-5444-9168
http://www.toshiba.co.jp/f-ene/tands/english/protect/f_pc_top.htm