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Relay Setting
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DOCUMENT SUBMISSION STATUS: FOR APPROVAL
00 09-07-2013 For Construction SS RSR AK
PB 08-04-2013 Issued for Approval SS RSR AK
PA 02-04-2013 ABB Internal Review SS RSR AK
REV DATE DESCRIPTION PREPARED CHKD APPD
OWNER
EPC CONTRACTOR
EPC CONTRACTOR’S CONSULTANT
PROJECT TITLE
KDL 120MW COMBINED CYLE POWER PLANT PROJECT
SUB-CONTRACTOR
DOCUMENT TITLE
PROTECTION COORDINATION STUDY
DOCUMENT NO
210014-P7002-E02-0042-00
REV
00
DATE
09-07-2013
PAGES
6
ABB ABB PTE LTD.
PP-IMECO Consortium ENGINEERING &CONSTRUCTION
ABB
Document Title Document No. Rev Date Page
Protection Coordination Study 210014‐P7002‐E02‐0042 00 09‐07‐2013 2 of 6
C O N T E N T S
Cl. No Description Page No.
1.0 Intent 3
2.0 References 3
3.0 Exclusion 3
4.0 Relay Settings and Coordination 3
5.0 Conclusion 6
6.0 Annexure 6
ABB
Document Title Document No. Rev Date Page
Protection Coordination Study 210014‐P7002‐E02‐0042 00 09‐07‐2013 3 of 6
1.0 INTENT
This document covers the following calculations and studies for KDL 120 MW Gas Fired
Combined Cycle Power Plant (CCPP), Indonesia.
i. Relay Settings and Coordination for 6 kV Switchgear
ii. Relay / Release setting and coordination for 400V Switchgear
iii. Motor Protection for MV Motors
iv. Thermal Overload Relay Settings for LV Motors
v. Earth Leakage Protection for LV System
2.0 REFERENCES:
a. Equipment Sizing and System Studies 210014-P7002-E02- 0001-00
b. All Equipment Data Sheet & FAT Report
c. IEEE 399 – 1997 Recommended Practice for industrial and commercial Power
System Analysis
3.0 EXCLUSIONS
a. Generator Protection
b. Generator Transformer Protection
c. 150 kV Switchyard Protection
Items b & c above are covered in “150 kV Substation Protection Setting Calculation” – 21004 –
P7001 – E15 – 0001. Item a is not in ABB Scope.
4.0 RELAY SETTINGS AND COORDINATION
Relay settings for the equipment is divided into three groups for easy understanding and coordination purpose:
1. Over current, Short Circuit & Earth fault protection and coordination
2. Equipment Protection – Motor Thermal Overload protection (MV & LV Motors)
3. Earth Leakage Protection
Left out Items like transformer restricted earth fault protection, under voltage protection and
Synchrocheck are also covered at the end.
4.1 Over current, Short Circuit & Earth fault protection and coordination
Overload & short circuit are the frequent type faults in any power system and it is protected by Over current, Short circuit & earth fault protection. Considering the probability of failure of protective equipment, backup protection is also required. This backup protection should wait the primary protection to clear fault and will isolate the fault only when primary protection fails to trip.
ABB
Document Title Document No. Rev Date Page
Protection Coordination Study 210014‐P7002‐E02‐0042 00 09‐07‐2013 4 of 6
Relay Coordination Methodology
The primary and backup relay pairs are identified using the network topology and relay
locations as inputs.
The primary fault current and the backup fault currents are determined.
For a given CT secondary rating, different plug setting steps (pick up currents) that are
available., the plug setting for phase and earth relays is selected. It is based on the maximum
load current flowing through the protective device and unbalance factor.
The selection of TMS is the most involved task in this process and that is where the actual
primary/backup coordination occurs. Before coordination is attempted, each relay is set to its
minimum TMS. The operating time of the primary relay for close in fault is determined. If this
new TMS is greater than old TMS, the actual TMS is made equal to new TMS and again the
process is repeated. An iterative method is employed whereby several passes are made
through the list of relays. Because of the inverse nature of the relay characteristic, these
iterations converge rapidly. The procedure is same for both phase and earth fault protection.
This is enabled by changing the plug setting and primary backup relay current depending on
the type of protection.
The over-current relay coordination is done such that the relays should operate for all short
circuits in its own zone and provide backup protection for short circuit in immediately
adjoining system elements in the downstream, if the relay in that adjoining system fails to
operate.
Assumptions & Consideration
250 ms discrimination time is considered for primary and backup relays.
Minimum time discrimination = Circuit breaker opening time + Relay Overshoot +
safety margin + Relay & CT error margin
Circuit breaker opening time = 45 ms
Relay Overshoot = 20 ms
Safety margin = 50 ms
Relay & CT error margin = 100 ms
Minimum Time Discrimination required = 45 + 20 + 50 + 100 ms
= 215 ms
Hence 250 ms discrimination is considered.
ABB
Document Title Document No. Rev Date Page
Protection Coordination Study 210014‐P7002‐E02‐0042 00 09‐07‐2013 5 of 6
No discrimination is considered between the primary and back-up relay pairs, which are
located on the same power system element (transformer primary side, secondary side and
cables) however where setting margins permit, discrimination is provided.
Plug settings of phase fault relays are computed based on the maximum load current.
An unbalance factor of 0.1 (10% unbalance) has been considered to compute the plug
settings of earth fault relays.
4.2 Equipment protection – Motor Thermal Overload Protection
Motor Thermal overload protection settings are provided based on 110% of the full load current for LV motors. The efficiency and power factor are assumed and hence full load current may vary with actual full load current. Hence setting shall be provided based on the Name Plate details of the motor at site.
For MV motors TOR settings based on 105% of the full load current for MV motors. Locked rotors protection and permissible Cold and Warm start are provided based on the MV motor Data sheet.
4.3 Earth Leakage Protection
Earth leakage protection is to ensure the human safety during earth leakage. Earth leakage settings for downstream end equipments like motors & DB’s shall be 300 mA with instantaneous trip. If upstream Earth leakage relay is available setting of 1 A with 300 ms shall be adopted if it is to be coordinated with downstream.
4.4 Restricted Earth Fault Protection, Synchronism Check & Under Voltage Protection
Settings for Restricted earth fault protection, Synchronism Check & Under voltage protection are provided in Annexure 6.
Results
The results of the over current and earth fault relay coordination study is presented in this section. The recommended phase and earth fault relay settings for 6 kV & 400 V System is presented in Annexure 1. MV & LV motor protection settings are provided in Annexure – 2 & 3 respectively. Earth Leakage relay settings are provided in Annexure 4.
Phase relay & earth relay curves for typical feeders are given in Annexure -5. These curves show minimum discrimination of 250 ms is maintained between primary and backup relays. From the curves it is observed that the equipments (Transformer, Cables etc) are protected for short circuit & overload. Curves also indicate that there is no nuisance tripping for transformer inrush and motor starting.
Three phase faults and Single line to ground faults are simulated at various locations and the operating sequence of relays are verified. No uncoordinated tripping or inadvertent relay tripping is reported. All relays operated as per coordination requirements.
ABB
Document Title Document No. Rev Date Page
Protection Coordination Study 210014‐P7002‐E02‐0042 00 09‐07‐2013 6 of 6
5.0 CONCLUSION
Optimal settings for both over current and earth fault relays are provided.
From the sequence of operation, it is observed that relays isolate the faulty equipments as
early as possible and minimise the damage. Clear discrimination is maintained between
primary and backup relays.
From the various curves it is observed that the protection tripping are coordinated perfectly.
6.0 ANNEXURE
1. Recommended Phase & Earth Relay Settings
2. MV Motor Protection settings
3. LV Motor Protection Settings
4. Earth Leakage Relay Settings
5. Over current & Earth fault Relay curves for typical MV feeders
6. Restricted Earth Fault Protection, Synchronism Check and Under Voltage Protection
settings
ANNEXURE 1:
Recommended Phase & Earth Relay Settings
KDL Relay Settings
Sl.No SWGR Feeder Name Relay Make CT Ratio
Ip> TDS CurveIp>>
Stage 1
T>>
Stage 1Ie> TDS Curve Ie>> Te>>
1 6 kV Switchgear Bus A Incomer 3 ‐ 6.5 MVA REF 615 ABB 800 / 1 0.86 0.05 LTI 2.25 0.4 0.1 0.08 NI
2 6 kV Switchgear Bus A Cranking Motor 1 REM 615 ABB 100 / 1 0.57 1 EI 4 0.04 0.055 0.05 NI 0.55 0.04
3 6 kV Switchgear Bus A Aux Trafo 1 ‐ 3 MVA REF 615 ABB 350 / 1 0.9 0.65 EI 13 0.04 0.1 0.05 NI 0.8 0.04
4 6 kV Switchgear Bus A Aux Trafo 1 ‐ 3 MVA ‐ LV Side REF 615 ABB 5000 / 5 0.9 0.68 EI 0.1 0.26 NI
5 6 kV Switchgear Bus A Fuel Gas Compressor Motor ‐1 REM 615 ABB 200 / 1 0.7 2.2 LTI 5 0.04 0.075 0.05 NI 0.75 0.04
6 6 kV Switchgear Bus A HRSG Feed Water Pump ‐ 1A REM 615 ABB 100 / 1 0.45 1 EI 3 0.04 0.05 0.05 NI 0.45 0.04
7 6 kV Switchgear Bus A HRSG Feed Water Pump ‐ 2A REM 615 ABB 100 / 1 0.45 1 EI 3 0.04 0.05 0.05 NI 0.45 0.04
8 6 kV Switchgear Bus A Sea Water CW Pump ‐ 01 REM 615 ABB 100 / 1 0.55 0.6 EI 3 0.04 0.055 0.05 NI 0.55 0.04
9 6 kV Switchgear Bus A Incomer 1 ‐ 6.5 MVA REF 542+ ABB 800 / 1 0.86 0.05 LTI 0.1 0.08 NI
10 6 kV Switchgear Bus A Incomer 1 ‐ 6.5 MVA REF 610 ABB 800 / 1 0.1 0.1 NI
11 Bus coupler REF 542+ ABB 800 / 1 0.86 0.05 LTI 0.1 0.08 NI
12 6 kV Switchgear Bus B Incomer 2 ‐ 6.5 MVA REF 542+ ABB 800 / 1 0.86 0.05 LTI 0.1 0.08 NI
13 6 kV Switchgear Bus B Incomer 2 ‐ 6.5 MVA REF 610 ABB 800 / 1 0.1 0.1 NI
14 6 kV Switchgear Bus B Fuel Gas Compressor Motor ‐B REM 615 ABB 200 / 1 0.7 2.2 LTI 5 0.04 0.075 0.05 NI 0.75 0.04
15 6 kV Switchgear Bus B Cranking Motor 2 REM 615 ABB 100 / 1 0.57 1 EI 4 0.04 0.055 0.05 NI 0.55 0.04
16 6 kV Switchgear Bus B Aux Trafo 2 ‐ 3 MVA REF 615 ABB 350 / 1 0.9 0.65 EI 13 0.04 0.1 0.05 NI 0.8 0.04
17 6 kV Switchgear Bus B Aux Trafo 2 ‐ 3 MVA ‐ LV Side REF 615 ABB 5000 / 5 0.9 0.68 EI 0.1 0.26 NI
18 6 kV Switchgear Bus B HRSG Feed Water Pump ‐ 1B REM 615 ABB 100 / 1 0.45 1 EI 3 0.04 0.05 0.05 NI 0.45 0.04
19 6 kV Switchgear Bus B HRSG Feed Water Pump ‐ 2B REM 615 ABB 100 / 1 0.45 1 EI 3 0.04 0.05 0.05 NI 0.45 0.04
20 6 kV Switchgear Bus B Sea Water CW Pump ‐ 02 REM 615 ABB 100 / 1 0.55 0.6 EI 3 0.04 0.055 0.05 NI 0.55 0.04
21 6 kV Switchgear Bus B Sea Water CW Pump ‐ 03 REM 615 ABB 100 / 1 0.55 0.6 EI 3 0.04 0.055 0.05 NI 0.55 0.04
Existing Switchgear
1 6 kV Existing Switchgear To KDL new PP 6 kV Switchgear Siemens 600 / 5 688 A 0.5 VI 1800 A 0.4
2 6 kV Existing Switchgear Incomer Siemens 2000 / 5 2300A 0.8
LEGEND:
In Relay rated current Note:
Ip> Phase Over current pickup EI Extremely Inverse
TDS Time Dial Setting (k) LTI Long Time Inverse
Ip>> Phase Instantaneous pickup NI Normal Inverse
T>> Instantaneous time delay SI Standard Inverse
Ie> Earth Over current pickup
Ie>> Earth Instantaneous pickup
Te>> Instantaneous time delay for Earth Fault
NA Disabled
Relay Settings KDL
Over Current Relay Settings Earth fault Relay Settings
Disabled Disabled
Existing switchgear settings are provided KDL in Site meeting Dt 21.06.2013. Graphs are provided to verify the
settings
NA NA
NA
Disabled
Disabled Disabled
Disabled Disabled
Disabled Disabled
DisabledNA
Disabled Disabled
ABB
KDL Relay Settings
Instantaneous
Ip> Trip curve Ip> Trip curve Ip>> Ie>> Te>>
1 Load Centre HRSG MCC 1 ACB ABB E2S 08 W MP PR121/P‐LSI 800 0.4 48 10 0.4 Disabled ‐ ‐
2 Load Centre GTG 2 MCC ACB ABB E2S 08 W MP PR121/P‐LSI 800 1 12 5 0.3 Disabled ‐ ‐
3 Load Centre GTG1 MCC ACB ABB E2S 08 W MP PR121/P‐LSI 800 1 12 5 0.3 Disabled ‐ ‐
4 Load Centre CEP Pump A ACB ABB E2S 10 W MP PR122/P‐LSIG 800 0.5 12 4 0.2 0.1
5 Load Centre Essential MCC ACB ABB E2S 10 W MP PR121/P‐LSI 1000 1 36 6 0.4 Disabled ‐ ‐
6 Load Centre Utility MCC 1 ACB ABB E2S 20 W MP PR121/P‐LSI 2000 1 12 4 0.4 Disabled ‐ ‐
7 Load Centre Incomer 1 ACB ABB E6H 63 W MP
8 Load Centre Buscoupler ACB ABB E6H 63 W MP PR121/P‐LSIG 6300 0.9 12 2 0.6 Disabled 0.1 0.6
9 Load Centre Incomer 2 ACB ABB E6H 63 W MP
10 Load Centre Utility MCC 2 ACB ABB E2S 20 W MP PR121/P‐LSI 2000 1 12 4 0.4 Disabled ‐ ‐
11 Load Centre CEP Pump B ACB ABB E2S 10 W MP PR122/P‐LSI 800 0.5 12 4 0.2 0.1
12 Load Centre GTG 2 MCC ACB ABB E2S 08 W MP PR121/P‐LSI 800 1 12 5 0.3 Disabled ‐ ‐
13 Load Centre GTG1 MCC ACB ABB E2S 08 W MP PR121/P‐LSI 800 1 12 5 0.3 Disabled ‐ ‐
14 Load Centre HRSG MCC 2 ACB ABB E2S 08 W MP PR121/P‐LSI 800 0.4 48 10 0.4 Disabled ‐ ‐
Note
HRSG MCC 1 & 2, 400A Plug is used. 424.53471
MCC
REF Relay Settings are provided along with MV Feeders
Rating
(A)
Disabled
Relay Settings (400 V Load Center) for KDL ‐ 00BFA01
Sl.No Feeder Name Make Model Release
Recommended settings
Long Time (LT) Short Time (ST) Ground faultProtection
REF Relay Settings are provided along with MV Feeders
ABB
KDL Relay Settings
Instantaneous
Ip> Trip curve Ip> Trip curve Ip>>
1 HRSG MCC 1 Incomer MCCB ABB T2S 160 FF 160 PR221/P‐LS/I 160 1 6 6.5 0.25 Disabled
2 HRSG MCC 1 Preheater RCP1 MCCB ABB T2H 160 FF 52 MA 52 ‐ ‐ ‐ ‐ Min (312A)
3 HRSG MCC 2 Incomer MCCB ABB T2S 160 FF 160 PR221/P‐LS/I 160 1 6 6.5 0.25 Disabled
4 HRSG MCC 2 Preheater RCP2 MCCB ABB T2H 160 FF 52 MA 52 ‐ ‐ ‐ ‐ Min (312A)
Relay Settings (400 V HRSG MCC) for KDL 01BFA02 & 02BFA02
Sl.No MCC Feeder Name Protection Make Model ReleaseRating
(A)
Recommended settings
Long Time (LT) Short Time (ST)
ABB
KDL Relay Settings
Instantaneous
Ip> Trip curve Ip> Trip curve Ip>>
1 Utility MCC 1Gas Compressor afer Cooler
Fan AMCCB ABB T2H 160 FF 52 MA 52 ‐ ‐ ‐ ‐ Min (312A)
2 Utility MCC 1 DM Water Makeup Pump MCCB ABB T2H 160 FF 52 MA 52 ‐ ‐ ‐ ‐ Min (312A)
3 Utility MCC 1 Closed Circuit CWP 1 MCCB ABB T4H 250 FF 160 PR221 ‐ I 160 ‐ ‐ ‐ ‐ 6.5
4 Utility MCC 1 DC & UPS System ‐ 1 MCCB ABB T5H 400 FF 400 PR221/P‐LS/I 400 0.52 3 ‐ ‐ 5.5
5 Utility MCC 1 DM Water transfer Pump MCCB ABB T2H 160 FF 32 MA 32 ‐ ‐ ‐ ‐ Min (192A)
6 Utility MCC 1 Workshop DP MCCB ABB T4H 250 FF 200 TMA 200 1 (200A) ‐ ‐ ‐ 10 (2000A)
7 Utility MCC 1 Air Compressor Panel MCCB ABB T4H 250 FF 200 TMA 200 1 (200A) ‐ ‐ ‐ 10 (2000A)
8 Utility MCC 1 MLDB MCCB ABB T5H 400 FF 400 PR221/P‐LS/I 400 0.6 12 5.5 0.25 Disabled
9 Utility MCC 1 Plant ACDB MCCB ABB T5H 400 FF 400 PR221/P‐LS/I 400 1 12 5.5 0.25 Disabled
10 Utility MCC 1Aux Sea Water Cooling Pump
AMCCB ABB T4H 250 FF 250 PR221 ‐ I 250 ‐ ‐ ‐ ‐ 5.5
11 Utility MCC 1 Incomer ACB ABB E2S 20 W MP PR121/P‐LSI 2000 0.75 12 3 0.3 Disabled
Recommended settings
Long Time (LT) Short Time (ST)
Relay Settings (400 V Utility MCC 1) for KDL 00BFA02
Sl.No MCC Feeder Name Protection Make Model ReleaseRating
(A)
ABB
KDL Relay Settings
Instantaneous
Ip> Trip curve Ip> Trip curve Ip>>
1 Utility MCC 2 Gas Compressor afer Cooler Fan B MCCB ABB T2H 160 FF 52 MA 52 ‐ ‐ ‐ ‐ Min (312A)
2 Utility MCC 2 DM Water Makeup Pump MCCB ABB T2H 160 FF 52 MA 52 ‐ ‐ ‐ ‐ Min (312A)
3 Utility MCC 2 Closed Circuit CWP 2 MCCB ABB T4H 250 FF 160 PR221 ‐ I 160 ‐ ‐ ‐ ‐ 6.5
4 Utility MCC 2 DC & UPS System ‐ 2 MCCB ABB T5H 400 FF 400 PR221/P‐LS/I 400 0.52 3 ‐ ‐ 5.5
5 Utility MCC 2 DM Water transfer Pump MCCB ABB T2H 160 FF 32 MA 32 ‐ ‐ ‐ ‐ Min (192A)
6 Utility MCC 2 Air Compressor Panel MCCB ABB T4H 250 FF 200 TMA 200 1 (200A) ‐ ‐ ‐ 10 (2000A)
7 Utility MCC 2 Fire System Panel MCCB ABB T4H 250 FF 250 PR221/P‐LS/I 250 1 (250A) 3 5.5 0.25 Disabled
8 Utility MCC 2 ACDB @ Swyd CR MCCB ABB T5H 400 FF 400 PR221/P‐LS/I 400 1 (400A) 12 5.5 0.25 Disabled
9 Utility MCC 2 Aux Sea Water Cooling Pump B MCCB ABB T4H 250 FF 250 PR221 ‐ I 250 ‐ ‐ ‐ ‐ 5.5
10 Utility MCC 2 Incomer ACB ABB E2S 20 W MP PR121/P‐LSI 2000 0.75 12 3 0.3 Disabled
Relay Settings (400 V Utility MCC 2) for KDL 00BFA03
Sl.No MCC Feeder Name Protection Make Model ReleaseRating
(A)
Recommended settings
Long Time (LT) Short Time (ST)
ABB
KDL Relay Settings
Instantaneous
Ip> Trip curve Ip> Trip curve Ip>>
1 ST MCC Jacking Oil Pump 1 MCCB ABB T2H 160 FF 32 MA 32 ‐ ‐ ‐ ‐ Min (192A)
2 ST MCC Jacking Oil Pump 2 MCCB ABB T2H 160 FF 32 MA 32 ‐ ‐ ‐ ‐ Min (192A)
3 ST MCC HP Oil Pump 1 MCCB ABB T2H 160 FF 32 MA 32 ‐ ‐ ‐ ‐ Min (192A)
4 ST MCC HP Oil Pump 2 MCCB ABB T2H 160 FF 32 MA 32 ‐ ‐ ‐ ‐ Min (192A)
5 ST MCC incomer MCCB ABB T4H 250 FF 250 PR221/P‐LS/I 250 1 (250A) 12 7.5 0.1 Disabled
6 ST MCC Aux Oil Pump MCCB ABB T2H 160 FF 80 MA 80 ‐ ‐ ‐ ‐ Min (480A)
Recommended settings
Long Time (LT) Short Time (ST)
Relay Settings (400 V ST MCC) for KDL 03BFA01
Sl.No MCC Feeder Name Protection Make Model ReleaseRating
(A)
ABB
KDL Relay Settings
Instantaneous
Ip> Trip curve Ip> Trip curve Ip>> Ie>> Te>>
1 Essential MCC incomer ACB ABB E2S 12 W MP PR121/P‐LSIG 1200 0.85 24 5 0.3 Disabled 0.2 0.4
2 Essential MCC 500 kVA DG ACB ABB E2S 12 W MP PR121/P‐LSIG 1200 0.7 24 4 0.4 Disabled 0.2 0.4
3 Essential MCC DC & UPS Bypass MCCB ABB T4H 250 FF 200 TMA 200 1 (200A) ‐ ‐ ‐ 5 (1000A) ‐ ‐
4 Essential MCC ST MCC ACB ABB E2S 08 W MP PR121/P‐LSI 800 0.4 48 5 0.2 Disabled ‐ ‐
Relay Settings (400 V Essential MCC) for KDL
Sl.No MCC Feeder Name Protection Make Model ReleaseRating
(A)
Recommended settings
Long Time (LT) Short Time (ST) Ground fault
ABB
KDL Relay Settings
Ip> TDS CurveIp>>
Stage 1
T>>
Stage 1Ie> TDS Curve Ie>> T>>
1 ACDB Incomer MCCB Micom P111 400 1 0.45 LTI 5 0.2 0.1 0.3 SI 0.8 0.2
Earth fault Relay Settings
Relay Settings (ACDB) for KDL
ProtectionSl.No MCC Feeder Name RelayRating
(A)
Over Current Relay Settings
ABB
ANNEXURE 2:
MV Motor Protection settings
Page 1 of 4
Equipment protection – Motor Protection
Jam Protection:
The stalled motor protection JAMPTOC is used for protecting the motor in stall or mechanical jam situations during the running state.
Sl.No Property Setting
1 Operation On
2 Start Value 2.5
3 Operate Delay
Time 2
4 Reset Delay Time 100
Motor Start Up Supervision: STTPMSU:
Maximum no. of starts limits shall be programmed into REM 615 relay as below. Cumulative
time limit and counter red rate has been calculated based on the REM 615 relay Technical
manual.
Sl.No Motor Capacity
kW
Starting Time at 80%
Vt in s (t)
Maximum allowed No.of Hot
start (n)
Duration during
which max. no of
startups made
Cumulative time limit
Counter Red Rate
1 Sea Water Pump 355 5 2 5 6 1
2 Cranking Motor 450 4.8 2 5 6 0.96
3 Fuel Gas
Compressor 1100 5.6 2 5 7 1.12
4 HRSG Feed Pump 355 2.5 (at 85% Voltage)
2 5 6 1
STTPMSU1:
Sl.No Parameter Sea Water Pump Cranking Motor Fuel Gas
Compressor
HRSG Feed
Pump
1 Operation On On On On
Page 2 of 4
Sl.No Parameter Sea Water Pump Cranking Motor Fuel Gas
Compressor
HRSG Feed
Pump
2 Operation Mode IIT IIT IIT IIT
3 Counter Red Rate 1 0.96 1.12 1
4 Cumulative time limit 6 6 7 6
5 Emer Start Red Rate 20 20 20 20
6 Restart Inhibit time 3 3 3 3
7 Motor Standstill A 0.1 0.1 0.1 0.1
Setting Group 1
1 Start detection A 0.75 0.75 1 0.6
2 Motor Start up A 2.5 3.1 4 2
3 Motor start up time 2.5 4.8 5.6 5
4 Lock rotor time 22 4 12 16
5 Str Over delay time 100 ms 100 ms 100 ms 100 ms
Thermal Overload Protection for Motor: MPTTR:
The motor thermal overload protection function MPTTR protects the electric motors from
overheating. MPTTR models the thermal behavior of motor on the basis of the measured load
current and disconnects the motor when the thermal content reaches 100 percent. The thermal
overload conditions are the most often encountered abnormal conditions in industrial motor
applications. The thermal overload conditions are typically the result of an abnormal rise in
the motor running current, which produces an increase in the thermal dissipation of the motor
and temperature or reduces cooling. MPTTR prevents an electric motor from drawing
excessive current and overheating, which causes the premature insulation failures of the
windings and, in worst cases, burning out of the motors.
The following thermal overload settings are recommended for motor feeders.
Page 3 of 4
Sl.No Parameter Value
1 Overload factor 1.05
2 Alarm Thermal Value 90
3 Restart thermal Value 40
4 Negative Seq Fact 5
5 Weighting factor 50
6 Time constant normal 320
7 Time constant start 320
8 Time constant stop 500
9 Env Temperature Mode 1 (FLC only)
Non Group settings:
Sl.No Parameter Sea Water Pump Cranking Motor Fuel Gas
Compressor
HRSG Feed
Pump
1 Rated Current 0.48 0.51 0.65 0.4
2 Initial Thermal Value 80 80 80 80
Negative sequence overcurrent Protection for Motor: MNSPTOC:
The unbalance protection based on the negative-sequence current function MNSPTOC
protects electric motors from phase unbalance. A small voltage unbalance can produce a large
negative sequence current flow in the motor. For example, a 5 percent voltage unbalance
produces a stator negative sequence current of 30 percent of the full load current, which can
severely heat the motor. MNSPTOC detects the large negative sequence current and
disconnects the motor.
Page 4 of 4
Sl.No Parameter Value
1 Start Value 0.08
2 Operating curve Type 15 (IEC Def Time)
3 Operate delay time 500 ms
Voltage Protection
In addition to above protection settings, Under voltage and overvoltage protection settings are
recommended for the feeders as below:
Over Voltage
Sl.No Parameter Value
1 Start Value 1.2
2 Operating curve Type 15 (IEC Def Time)
3 Operate delay time 2000 ms
Under Voltage
Sl.No Parameter Value
1 Start Value 0.8
2 Operating curve Type 15 (IEC Def Time)
3 Operate delay time 2000 ms
ANNEXURE 3:
LV Motor Protection Settings
Sl.NoMotor Capacity
in kWpf eff FLA OLR Range Setting CT Ratio
1 0.37 0.7 0.8 0.95 TA 25 DU 1.4 1 - 1.4 1
2 0.55 0.8 0.8 1.24 TA 25 DU 1.8 1.3 - 1.8 1.3
3 0.75 0.8 0.8 1.69 TA 25 DU 2.4 1.7 - 2.4 1.7
4 1.5 0.8 0.8 3.38 TA 25 DU 4 2.8 - 4 3.4
5 2.2 0.8 0.8 4.96 TA 25 DU 5 4.5 - 6.5 5
6 3 0.8 0.8 6.77 TA 25 DU 8.5 6 - 8.5 7
7 4 0.8 0.8 9.02 TA 25 DU 11 7.5 - 11 9.5
8 3.7 0.8 0.8 8.34 TA 25 DU 11 7.5 - 11 8.5
9 5.5 0.8 0.8 12.40 TA 25 DU 14 10 - 14. 12.5
10 9.3 0.8 0.8 20.97 TA 25 DU 25 18 - 25 21
11 11 0.8 0.8 24.81 TA 25 DU 25 18 -25 25
12 15 0.8 0.9 30.07 TA 75 DU 32 22 - 32 32
13 37 0.85 0.8 78.54 TA 25 DU 4 2.8 - 4 3 110/4
14 55 0.85 0.9 103.78 TA 25 DU 4 2.8 - 4 3.8 110/4
15 75 0.9 0.9 133.65 TA 25 DU 1.4 2.8 - 4 4 145/4
LEGEND: Note
eff efficiency
pf Power Factor
FLA Full Load Amps
OLR Over Load Relay
CT Current Transformer
LV Motor Thermal Overload Relay Settings
The efficiency and power factor are assumed and hence full load current may vary with actual full load current. Hence setting shall be provided based on the Name Plate details of the motor at site.
ANNEXURE 4:
Earth Leakage Relay Settings
Sl.NoMotor Capacity
in kWProtection Make Model Current Time
1 0.37 ELR ABB RD3 0.3 0
2 0.55 ELR ABB RD3 0.3 0
3 0.75 ELR ABB RD3 0.3 0
4 1.5 ELR ABB RD3 0.3 0
5 2.2 ELR ABB RD3 0.3 0
6 3 ELR ABB RD3 0.3 0
7 4 ELR ABB RD3 0.3 0
8 3.7 ELR ABB RD3 0.3 0
9 5.5 ELR ABB RD3 0.3 0
10 9.3 ELR ABB RD3 0.3 0
11 11 ELR ABB RD3 0.3 0
12 15 ELR ABB RD3 0.3 0
13 37 ELR ABB RD3 0.3 0
14 55 ELR ABB RD3 0.3 0
15 75 ELR ABB RD3 0.3 0
Earth Leakage Relay Settings
ANNEXURE 5:
Over current & Earth fault Relay curves for typical MV feeders
Relay2 - POC1ABBREF 615CT Ratio 350:5IEC - Extremely InversePickup = 0.9 (0.3 - 5 xCT Sec)Time Dial = 0.653x = 6.5 s, 5x = 2.17 s, 8x = 0.825 sInst = 13 (0.5 - 35 xCT Sec)Time Delay = 0.04 s
Relay1 - POC1ABBREF 542plusCT Ratio 800:5Long Time InversePickup = 0.86 (0.05 - 40 xCT Sec)Time Dial = 0.053x = 3 s, 5x = 1.5 s, 8x = 0.857 s
Cable8 - P1 - 3/C 240 mm²Copper XLPETc = 90CPlotted - 1 x 3/C 240 mm²
T2Inrush
T23 MVA (Secondary) 7.83 %ZDelta-Wye Solid Grd
Relay1 - 3P
Relay2 - 3P
10K.5 1 10 100 1K3 5 30 50 300 500 3K 5K
Amps X 100 6 kV SWITHGEAR1 (Nom. kV=6, Plot Ref. kV=6)
10K.5 1 10 100 1K3 5 30 50 300 500 3K 5K
Amps X 100 6 kV SWITHGEAR1 (Nom. kV=6, Plot Ref. kV=6)
1K
.01
.1
1
10
100
.03
.05
.3
.5
3
5
30
50
300
500
Sec
onds
1K
.01
.1
1
10
100
.03
.05
.3
.5
3
5
30
50
300
500
Seconds
ETAP Star 12.0.0C
Incomer - OG
Project: 120 MW Combine Cycle GT PowerLocation: CILEGON BANTEN INDONESIAContract:Engineer: Selvakumar SFilename: C:\0 Projects\KDL\Relay Coordination\rc\KDL LV.
Date: 06-14-2013 SN: ABBGLOBALRev: BaseFault: Phase
±
±
6 kV SWITHGEAR1
T23 MVA
Cable8
1-3/C 240
CB14
R Relay2
CB9
R Relay1
6 kV SWITHGEAR1
CB14
CB9
Cable8
1-3/C 240
Relay2
T23 MVA
Relay1
Relay1 - NOC1ABBREF 542plusCT Ratio 800:5Normal InversePickup = 0.1 (0.05 - 40 xCT Sec)Time Dial = 0.083x = 0.504 s, 5x = 0.342 s, 8x = 0.264 s
Relay2 - GOC1ABBREF 615CT Ratio 350:5IEC - Normal InversePickup = 10 (1 - 100 xCT Sec)Time Dial = 0.053x = 0.315 s, 5x = 0.214 s, 8x = 0.165 sInst = 80 (5 - 400 xCT Sec)Time Delay = 0.04 s
Relay1 - LGRelay2 - G - LG
10K.5 1 10 100 1K3 5 30 50 300 500 3K 5K
Amps 6 kV SWITHGEAR1 (Nom. kV=6, Plot Ref. kV=6)
10K.5 1 10 100 1K3 5 30 50 300 500 3K 5K
Amps 6 kV SWITHGEAR1 (Nom. kV=6, Plot Ref. kV=6)
1K
.01
.1
1
10
100
.03
.05
.3
.5
3
5
30
50
300
500
Sec
onds
1K
.01
.1
1
10
100
.03
.05
.3
.5
3
5
30
50
300
500
Seconds
ETAP Star 12.0.0C
Incomer - OG
Project: 120 MW Combine Cycle GT PowerLocation: CILEGON BANTEN INDONESIAContract:Engineer: Selvakumar SFilename: C:\0 Projects\KDL\Relay Coordination\rc\KDL LV.
Date: 06-14-2013 SN: ABBGLOBALRev: BaseFault: Ground
±
±
6 kV SWITHGEAR1
T23 MVA
Cable8
1-3/C 240
CB14
R Relay2
CB9
R Relay1
6 kV SWITHGEAR1
CB14
CB9
Cable8
1-3/C 240
T23 MVA
Relay2
Relay1
Relay1 - POC1ABBREF 542plusCT Ratio 800:5Long Time InversePickup = 0.86 (0.05 - 40 xCT Sec)Time Dial = 0.053x = 3 s, 5x = 1.5 s, 8x = 0.857 s
Cable25 - P2 - 3/C 240 mm²Copper XLPETc = 90CPlotted - 2 x 3/C 240 mm²
01MBA10GT001Inrush
01MBA10GT00146 MVA (Secondary) 11.834 %ZWye Solid Grd-Delta-Wye Resistor GrdCurve Shift = 1
Relay1 - 3P
10K.5 1 10 100 1K3 5 30 50 300 500 3K 5K
Amps X 10 Grid Bus (Nom. kV=150, Plot Ref. kV=150)
10K.5 1 10 100 1K3 5 30 50 300 500 3K 5K
Amps X 10 Grid Bus (Nom. kV=150, Plot Ref. kV=150)
1K
.01
.1
1
10
100
.03
.05
.3
.5
3
5
30
50
300
500
Se
cond
s1K
.01
.1
1
10
100
.03
.05
.3
.5
3
5
30
50
300
500
Seconds
ETAP Star 12.0.0C
GSUT Damage Curve
Project: 120 MW Combine Cycle GT PowerLocation: CILEGON BANTEN INDONESIAContract:Engineer: Selvakumar SFilename: C:\0 Projects\KDL\Relay Coordination\rc\KDL LV.
Date: 06-14-2013 SN: ABBGLOBALRev: BaseFault: Phase
Bus4
±
6 kV SWITHGEAR1
±
01MBA10
37.64 MW
CB2 R Relay10
01MBA10GT001
46/46/6.5 MVA
CB9
R Relay1
Cable25
2-3/C 240
Relay1
Cable25
2-3/C 240
Relay10 - G - 51OC1ABBREF 610CT Ratio 800:5IEC - Normal InversePickup = 10 (1 - 100 xCT Sec)Time Dial = 0.13x = 0.63 s, 5x = 0.428 s, 8x = 0.33 s
Relay1 - NOC1ABBREF 542plusCT Ratio 800:5Normal InversePickup = 0.1 (0.05 - 40 xCT Sec)Time Dial = 0.083x = 0.504 s, 5x = 0.342 s, 8x = 0.264 s
Relay1 - LGRelay10 - G - LG
10K.5 1 10 100 1K3 5 30 50 300 500 3K 5K
Amps Bus4 (Nom. kV=6, Plot Ref. kV=6)
10K.5 1 10 100 1K3 5 30 50 300 500 3K 5K
Amps Bus4 (Nom. kV=6, Plot Ref. kV=6)
1K
.01
.1
1
10
100
.03
.05
.3
.5
3
5
30
50
300
500
Se
cond
s1K
.01
.1
1
10
100
.03
.05
.3
.5
3
5
30
50
300
500
Seconds
ETAP Star 12.0.0C
GSUT Damage Curve
Project: 120 MW Combine Cycle GT PowerLocation: CILEGON BANTEN INDONESIAContract:Engineer: Selvakumar SFilename: C:\0 Projects\KDL\Relay Coordination\rc\KDL LV.
Date: 06-14-2013 SN: ABBGLOBALRev: BaseFault: Ground
Bus4
±
6 kV SWITHGEAR1
±
01MBA10
37.64 MW
CB2 R Relay10
01MBA10GT001
46/46/6.5 MVA
CB9
R Relay1
Cable25
2-3/C 240
Relay1
Relay10
01MBA10GT001
46/46/6.5 MVA
Bus8
±
CB11
Open
I>
Relay6
Cable4
1-3/C 150
Cranking Motor 1
450 kW
Bus8
±
CB11
Open
I>
Relay6
Cable4
1-3/C 150
Cranking Motor 1
450 kW
Cable181 - 3/C 120 mm²Copper XLPETc = 90C
Relay5 - POC1ABB - NewREM 615CT Ratio 200:1IEEE - Long Time InversePickup = 0.7 (0.1 - 5 xCT Sec)Time Dial = 2.23x = 8.92 s, 5x = 6.19 s, 8x = 4.86 sInst = 5 (0.1 - 40 xCT Sec)Time Delay = 0.04 s
Fuel Gas Compressor 2-HotStall = 12 sec
Fuel Gas Compressor 2-100%1100 KW
Fuel Gas Compressor 2-80%1100 KW
Relay5 - 3P
10K.5 1 10 100 1K3 5 30 50 300 500 3K 5K
Amps X 100 6 kV SWITHGEAR2 (Nom. kV=6, Plot Ref. kV=6)
10K.5 1 10 100 1K3 5 30 50 300 500 3K 5K
Amps X 100 6 kV SWITHGEAR2 (Nom. kV=6, Plot Ref. kV=6)
1K
.01
.1
1
10
100
.03
.05
.3
.5
3
5
30
50
300
500
Sec
onds
1K
.01
.1
1
10
100
.03
.05
.3
.5
3
5
30
50
300
500
Seconds
ETAP Star 7.5.0C
ABB Global Fuel Gas Comp
Project: 120 MW Combine Cycle GT PowerLocation: CILEGON BANTEN INDONESIAContract:Engineer: Selvakumar SFilename: C:\0 Projects\KDL\Relay Coordination\rc\KDL LV.OTI
Date: 04-03-2013 SN: ABBGLOBALRev: BaseFault: Phase
Bus26
±
CB23
I>
Relay5
Cable18
1-3/C 120
Fuel Gas Compressor 2
1100 kW
Relay5
Relay5 - NOC1ABB - NewREM 615CT Ratio 200:1Normal InversePickup = 0.075 (0.05 - 5 xCT Sec)Time Dial = 0.053x = 0.315 s, 5x = 0.214 s, 8x = 0.165 sInst = 0.75 (0.05 - 40 xCT Sec)Time Delay = 0.04 s
Relay5 - LG
10K.5 1 10 100 1K3 5 30 50 300 500 3K 5K
Amps 6 kV SWITHGEAR2 (Nom. kV=6, Plot Ref. kV=6)
10K.5 1 10 100 1K3 5 30 50 300 500 3K 5K
Amps 6 kV SWITHGEAR2 (Nom. kV=6, Plot Ref. kV=6)
1K
.01
.1
1
10
100
.03
.05
.3
.5
3
5
30
50
300
500
Sec
onds
1K
.01
.1
1
10
100
.03
.05
.3
.5
3
5
30
50
300
500
Seconds
ETAP Star 7.5.0C
ABB Global Fuel Gas Comp
Project: 120 MW Combine Cycle GT PowerLocation: CILEGON BANTEN INDONESIAContract:Engineer: Selvakumar SFilename: C:\0 Projects\KDL\Relay Coordination\rc\KDL LV.OTI
Date: 04-03-2013 SN: ABBGLOBALRev: BaseFault: Ground
Bus26
±
CB23
I>
Relay5
Cable18
1-3/C 120
Fuel Gas Compressor 2
1100 kW
Relay5
Cable71 - 3/C 120 mm²Copper XLPETc = 90C
Relay3 - POC1ABB - NewREM 615CT Ratio 100:1Extremely InversePickup = 0.45 (0.05 - 40 xCT Sec)Time Dial = 13x = 10 s, 5x = 3.33 s, 8x = 1.27 sInst = 3 (0.1 - 40 xCT Sec)Time Delay = 0.04 s
HRSG Feed Pump1-HotStall = 16 sec
HRSG Feed Pump1-100%355 KW
HRSG Feed Pump1-85%355 KW
Relay3 - 3P
10K.5 1 10 100 1K3 5 30 50 300 500 3K 5K
Amps X 10 6 kV SWITHGEAR1 (Nom. kV=6, Plot Ref. kV=6)
10K.5 1 10 100 1K3 5 30 50 300 500 3K 5K
Amps X 10 6 kV SWITHGEAR1 (Nom. kV=6, Plot Ref. kV=6)
1K
.01
.1
1
10
100
.03
.05
.3
.5
3
5
30
50
300
500
Sec
onds
1K
.01
.1
1
10
100
.03
.05
.3
.5
3
5
30
50
300
500
Seconds
ETAP Star 7.5.0C
ABB Global HRSG Feed Pump
Project: 120 MW Combine Cycle GT PowerLocation: CILEGON BANTEN INDONESIAContract:Engineer: Selvakumar SFilename: C:\0 Projects\KDL\Relay Coordination\rc\KDL LV.OTI
Date: 04-03-2013 SN: ABBGLOBALRev: BaseFault: Phase
Bus12
±
CB12
I>
Relay3
Cable7
1-3/C 120
HRSG Feed Pump1
355 kW
Relay3 - NOC1ABB - NewREM 615CT Ratio 100:1Normal InversePickup = 0.05 (0.05 - 5 xCT Sec)Time Dial = 0.053x = 0.315 s, 5x = 0.214 s, 8x = 0.165 sInst = 0.45 (0.05 - 40 xCT Sec)Time Delay = 0.04 s
Relay3 - LG
10K.5 1 10 100 1K3 5 30 50 300 500 3K 5K
Amps 6 kV SWITHGEAR1 (Nom. kV=6, Plot Ref. kV=6)
10K.5 1 10 100 1K3 5 30 50 300 500 3K 5K
Amps 6 kV SWITHGEAR1 (Nom. kV=6, Plot Ref. kV=6)
1K
.01
.1
1
10
100
.03
.05
.3
.5
3
5
30
50
300
500
Sec
onds
1K
.01
.1
1
10
100
.03
.05
.3
.5
3
5
30
50
300
500
Seconds
ETAP Star 7.5.0C
ABB Global HRSG Feed Pump
Project: 120 MW Combine Cycle GT PowerLocation: CILEGON BANTEN INDONESIAContract:Engineer: Selvakumar SFilename: C:\0 Projects\KDL\Relay Coordination\rc\KDL LV.OTI
Date: 04-03-2013 SN: ABBGLOBALRev: BaseFault: Ground
Bus12
±
CB12
I>
Relay3
Cable7
1-3/C 120
HRSG Feed Pump1
355 kW
Bus5
±
CB10
I>
Relay4
Cable1
1-3/C 120
Main Sea Water Pump1
355 kW
Bus5
±
CB10
I>
Relay4
Cable1
1-3/C 120
Main Sea Water Pump1
355 kW
6 kV SWITHGEAR1
±
±
T23 MVA
Cable8
1-3/C 240
CB14
R Relay2
R Relay9
Cable8
1-3/C 240
CB14
6 kV SWITHGEAR1
Relay2
Relay9
T23 MVA
Relay9 - GOC1ABBREF 615CT Ratio 5000:5IEC - Normal InversePickup = 10 (1 - 100 xCT Sec)Time Dial = 0.263x = 1.64 s, 5x = 1.11 s, 8x = 0.857 s
Relay2 - GOC1ABBREF 615CT Ratio 350:5IEC - Normal InversePickup = 10 (1 - 100 xCT Sec)Time Dial = 0.053x = 0.315 s, 5x = 0.214 s, 8x = 0.165 sInst = 80 (5 - 400 xCT Sec)Time Delay = 0.04 s
Relay9 - G - LGRelay2 - G - LG
10K.5 1 10 100 1K3 5 30 50 300 500 3K 5K
Amps X 100 LOAD CENTRE 1 (Nom. kV=0.4, Plot Ref. kV=0.4)
10K.5 1 10 100 1K3 5 30 50 300 500 3K 5K
Amps X 100 LOAD CENTRE 1 (Nom. kV=0.4, Plot Ref. kV=0.4)
1K
.01
.1
1
10
100
.03
.05
.3
.5
3
5
30
50
300
500
Sec
onds
1K
.01
.1
1
10
100
.03
.05
.3
.5
3
5
30
50
300
500
Seconds
ETAP Star 12.0.0C
ABB Global 3 MVA Trafo
Project: 120 MW Combine Cycle GT PowerLocation: CILEGON BANTEN INDONESIAContract:Engineer: Selvakumar SFilename: C:\0 Projects\KDL\Relay Coordination\rc\KDL
Date: 04-05-2013 SN: ABBGLOBALRev: BaseFault: Ground
±
±
6 kV SWITHGEAR1
CB14
R Relay2
Cable8
1-3/C 240
R Relay9
T23 MVAT23 MVA
Cable8
1-3/C 240
Relay9
Relay2
Relay5 - POC1ABB - NewREM 615CT Ratio 200:1IEEE - Long Time InversePickup = 0.7 (0.1 - 5 xCT Sec)Time Dial = 2.23x = 8.92 s, 5x = 6.19 s, 8x = 4.86 sInst = 5 (0.1 - 40 xCT Sec)Time Delay = 0.04 s
Relay14 - POC1ABBREF 542plusCT Ratio 800:5Long Time InversePickup = 0.86 (0.05 - 40 xCT Sec)Time Dial = 0.053x = 3 s, 5x = 1.5 s, 8x = 0.857 s
Fuel Gas Compressor 2-100%
Fuel Gas Compressor 2-80%
Fuel Gas Compressor 2-Hot
Relay14 - 3PRelay5 - 3P
10K.5 1 10 100 1K3 5 30 50 300 500 3K 5K
Amps X 100 Bus26 (Nom. kV=6, Plot Ref. kV=6)
10K.5 1 10 100 1K3 5 30 50 300 500 3K 5K
Amps X 100 Bus26 (Nom. kV=6, Plot Ref. kV=6)
1K
.01
.1
1
10
100
.03
.05
.3
.5
3
5
30
50
300
500
Se
con
ds
1K
.01
.1
1
10
100
.03
.05
.3
.5
3
5
30
50
300
500
Se
con
ds
ETAP Star 12.0.0C
MeghnaghatGas Compressor
Starting
Project: 120 MW Combine Cycle GT PowerLocation: CILEGON BANTEN INDONESIAContract:Engineer: Selvakumar SFilename: C:\0 Projects\KDL\Relay Coordination\rc\KDL LV.
Date: 07-10-2013 SN: ABBGLOBALRev: BaseFault: Phase
±
Bus26
±
CB23
I>
Relay5
Cable18
1-3/C 120
Fuel Gas Compressor 2
1100 kW
R
Relay14
CB41 Open
Relay15 - PSiemens7SJ45CT Ratio 600:5IEC - Very InversePickup = 1.15 (0.5 - 4 xCT Sec)Time Dial = 0.53x = 3.38 s, 5x = 1.69 s, 8x = 0.964 sInst = 3 (2 - 20 xCT Sec)Time Delay = 0.4 s
Relay16 - POC1Siemens7SJ551CT Ratio 2000:5Inst = 1.15 (1 - 10 xCT Sec)Time Delay = 0.8 s
Relay14 - POC1ABBREF 542plusCT Ratio 800:5Long Time InversePickup = 0.86 (0.05 - 40 xCT Sec)Time Dial = 0.053x = 3 s, 5x = 1.5 s, 8x = 0.857 sInst = 2.25 (0.05 - 40 xCT Sec)Time Delay = 0.4 s
10K.5 1 10 100 1K3 5 30 50 300 500 3K 5K
Amps X 100 Existing SWGR (Nom. kV=6, Plot Ref. kV=6)
10K.5 1 10 100 1K3 5 30 50 300 500 3K 5K
Amps X 100 Existing SWGR (Nom. kV=6, Plot Ref. kV=6)
1K
.01
.1
1
10
100
.03
.05
.3
.5
3
5
30
50
300
500
Sec
onds
1K
.01
.1
1
10
100
.03
.05
.3
.5
3
5
30
50
300
500
Seconds
ETAP Star 12.0.0C
MeghnaghatExisting switchgear
Coord
Project: 120 MW Combine Cycle GT PowerLocation: CILEGON BANTEN INDONESIAContract:Engineer: Selvakumar SFilename: C:\0 Projects\KDL\Relay Coordination\rc\KDL LV.
Date: 07-10-2013 SN: ABBGLOBALRev: BaseFault: Phase
6 kV SWITHGEAR1
±
±
Existing SWGR
±
I>
Relay16
I>
Relay15
Cable27
2-3/C 240
R
Relay14
CB41 Open
Relay14
CB53ABB SACE PR112Sensor = 400LT Pickup = 1 (400 Amps)LT Band = 12ST Pickup = 6 (2400 Amps)ST Band = 0.1 (I^x)t = OUTInst. Pickup = 15 (6000 Amps)
CB29ABB SACE PR121Frame = 1200 Plug = 800 AmpsLT Pickup = 1 (800 Amps)LT Band = 12ST Pickup = 5 (4000 Amps)ST Band = 0.3 (I^x)t = OUT
Cable2
10K.5 1 10 100 1K3 5 30 50 300 500 3K 5K
Amps X 100 GTG - 1 MCC MAIN (Nom. kV=0.4, Plot Ref. kV=0.4)
10K.5 1 10 100 1K3 5 30 50 300 500 3K 5K
Amps X 100 GTG - 1 MCC MAIN (Nom. kV=0.4, Plot Ref. kV=0.4)
1K
.01
.1
1
10
100
.03
.05
.3
.5
3
5
30
50
300
500
Se
con
ds
1K
.01
.1
1
10
100
.03
.05
.3
.5
3
5
30
50
300
500
Se
con
ds
ETAP Star 7.5.0C
ABB Global LC - GT MCC
Project: 120 MW Combine Cycle GT PowerLocation: CILEGON BANTEN INDONESIAContract:Engineer: Selvakumar SFilename: C:\0 Projects\KDL\Relay Coordination\rc\KDL LV.OTI
Date: 04-05-2013 SN: ABBGLOBALRev: BaseFault: Phase
LOAD CENTRE 1
GTG - 1 MCC MAIN
Cable2
2-4/C 300
CB29
CB53
GTG - 1 MCC MAIN
LOAD CENTRE 1
Cable2
2-4/C 300
CB29
CB53
CB44ABB SACE PR121Frame = 2000 Plug = 2000 AmpsLT Pickup = 0.75 (1500 Amps)LT Band = 12ST Pickup = 3 (6000 Amps)ST Band = 0.3 (I^x)t = OUT
CB42ABB SACE PR221 (T5)Sensor = 400LT Pickup = 1 (400 Amps)LT Band = 12sST Pickup = 5.5 (2200 Amps)ST Band = 0.25s (I^x)t = INOverride = 5000 Amps
Cable11 - P
CB34ABB SACE PR121Frame = 2000 Plug = 2000 AmpsLT Pickup = 1 (2000 Amps)LT Band = 12ST Pickup = 4 (8000 Amps)ST Band = 0.4 (I^x)t = OUT
CB44 - 3P
CB34 - 3P
10K.5 1 10 100 1K3 5 30 50 300 500 3K 5K
Amps X 100 LOAD CENTRE 1 (Nom. kV=0.4, Plot Ref. kV=0.4)
10K.5 1 10 100 1K3 5 30 50 300 500 3K 5K
Amps X 100 LOAD CENTRE 1 (Nom. kV=0.4, Plot Ref. kV=0.4)
1K
.01
.1
1
10
100
.03
.05
.3
.5
3
5
30
50
300
500
Sec
onds
1K
.01
.1
1
10
100
.03
.05
.3
.5
3
5
30
50
300
500
Seconds
ETAP Star 12.0.0C
ABB GlobalLC - Utility MCC -
ACDB
Project: 120 MW Combine Cycle GT PowerLocation: CILEGON BANTEN INDONESIAContract:Engineer: Selvakumar SFilename: C:\0 Projects\KDL\Relay Coordination\rc\KD
Date: 04-05-2013 SN: ABBGLOBALRev: BaseFault: Phase
LOAD CENTRE 1
Utility MCC1
CB42
CB44
Cable11
3-4/C 300
CB34
LOAD CENTRE 1
CB44
CB16
Relay9 - POC1ABBREF 615CT Ratio 5000:5IEC - Extremely InversePickup = 0.9 (0.3 - 5 xCT Sec)Time Dial = 0.683x = 6.8 s, 5x = 2.27 s, 8x = 0.863 s
CB34ABB SACE PR121Frame = 2000 Plug = 2000 AmpsLT Pickup = 1 (2000 Amps)LT Band = 12ST Pickup = 4 (8000 Amps)ST Band = 0.4 (I^x)t = OUT
Relay9 - 3P
CB34 - 3P
CB16 - 3P
10K.5 1 10 100 1K3 5 30 50 300 500 3K 5K
Amps X 100 LOAD CENTRE 1 (Nom. kV=0.4, Plot Ref. kV=0.4)
10K.5 1 10 100 1K3 5 30 50 300 500 3K 5K
Amps X 100 LOAD CENTRE 1 (Nom. kV=0.4, Plot Ref. kV=0.4)
1K
.01
.1
1
10
100
.03
.05
.3
.5
3
5
30
50
300
500
Sec
onds
1K
.01
.1
1
10
100
.03
.05
.3
.5
3
5
30
50
300
500
Seconds
ETAP Star 7.5.0C
ABB Global LC IC & OG
Project: 120 MW Combine Cycle GT PowerLocation: CILEGON BANTEN INDONESIAContract:Engineer: Selvakumar SFilename: C:\0 Projects\KDL\Relay Coordination\rc\KDL LV.OTI
Date: 04-05-2013 SN: ABBGLOBALRev: BaseFault: Phase
LOAD CENTRE 1
±
R
Relay9
CB34
LOAD CENTRE 1
CB16
Relay9
CB34
CB16
CB33ABB SACE PR121Frame = 800 Plug = 800 AmpsLT Pickup = 0.5 (400 Amps)LT Band = 12Inst. Pickup = 4 (3200 Amps)
CEP-HotStall = 12 sec
CEP-80%200 KW
CEP-100%200 KW
Cable12 - P
CB33 - 3P
10K.5 1 10 100 1K3 5 30 50 300 500 3K 5K
Amps X 100 LOAD CENTRE 1 (Nom. kV=0.4, Plot Ref. kV=0.4)
10K.5 1 10 100 1K3 5 30 50 300 500 3K 5K
Amps X 100 LOAD CENTRE 1 (Nom. kV=0.4, Plot Ref. kV=0.4)
1K
.01
.1
1
10
100
.03
.05
.3
.5
3
5
30
50
300
500
Sec
onds
1K
.01
.1
1
10
100
.03
.05
.3
.5
3
5
30
50
300
500
Seconds
ETAP Star 12.0.0C
ABB Global CEP.
Project: 120 MW Combine Cycle GT PowerLocation: CILEGON BANTEN INDONESIAContract:Engineer: Selvakumar SFilename: C:\0 Projects\KDL\Relay Coordination
Date: 04-05-2013 SN: ABBGLOBALRev: BaseFault: Phase
Bus14
CEP
200 kW
CB33
Cable12
2-3/C 240
CB33
CEP
200 kW
Cable12
2-3/C 240
CB33ABB SACE PR121Frame = 800 Plug = 800 AmpsGround Pickup = 0.2 (160 Amps)Ground Band = 0.1 (I^x)t = OUT
CB33 - LG
10K.5 1 10 100 1K3 5 30 50 300 500 3K 5K
Amps X 100 LOAD CENTRE 1 (Nom. kV=0.4, Plot Ref. kV=0.4)
10K.5 1 10 100 1K3 5 30 50 300 500 3K 5K
Amps X 100 LOAD CENTRE 1 (Nom. kV=0.4, Plot Ref. kV=0.4)
1K
.01
.1
1
10
100
.03
.05
.3
.5
3
5
30
50
300
500
Sec
onds
1K
.01
.1
1
10
100
.03
.05
.3
.5
3
5
30
50
300
500
Seconds
ETAP Star 12.0.0C
ABB Global CEP.
Project: 120 MW Combine Cycle GT PowerLocation: CILEGON BANTEN INDONESIAContract:Engineer: Selvakumar SFilename: C:\0 Projects\KDL\Relay Coordination
Date: 04-05-2013 SN: ABBGLOBALRev: BaseFault: Ground
Bus14
CEP
200 kW
CB33
Cable12
2-3/C 240
CB33
Cable31
CB42ABB SACE PR221 (T5)Sensor = 400LT Pickup = 1 (400 Amps)LT Band = 12sST Pickup = 5.5 (2200 Amps)ST Band = 0.25s (I^x)t = INOverride = 5000 Amps
Relay7 - POC1AREVAP111CT Ratio 400:5IEC - Long Time InversePickup = 1 (0.1 - 25 xCT Sec)Time Dial = 0.453x = 27 s, 5x = 13.5 s, 8x = 7.71 sInst = 5 (0.5 - 40 xCT Sec)Time Delay = 0.2 s
CB43ABBT3Size = 150 AmpsThermal Trip = FixedMagnetic Trip = Fixed
10K.5 1 10 100 1K3 5 30 50 300 500 3K 5K
Amps X 100 Utility MCC1 (Nom. kV=0.4, Plot Ref. kV=0.4)
10K.5 1 10 100 1K3 5 30 50 300 500 3K 5K
Amps X 100 Utility MCC1 (Nom. kV=0.4, Plot Ref. kV=0.4)
1K
.01
.1
1
10
100
.03
.05
.3
.5
3
5
30
50
300
500
Sec
onds
1K
.01
.1
1
10
100
.03
.05
.3
.5
3
5
30
50
300
500
Seconds
ETAP Star 7.5.0C
ABB Global Utility MCC - ACDB
Project: 120 MW Combine Cycle GT PowerLocation: CILEGON BANTEN INDONESIAContract:Engineer: Selvakumar SFilename: C:\0 Projects\KDL\Relay Coordination\rc\KDL LV.OTI
Date: 04-05-2013 SN: ABBGLOBALRev: BaseFault: Phase
Utility MCC1
±
ACDBI> Relay7
CB43
Cable31
3-1/C 120
CB42
ACDB
Cable31
3-1/C 120
CB42
Utility MCC1
Relay7
CB43
CB28ABBT3Size = 125 AmpsThermal Trip = FixedMagnetic Trip = Fixed
CB50ABB SACE PR121Frame = 800 Plug = 800 AmpsLT Pickup = 0.4 (320 Amps)LT Band = 48ST Pickup = 5 (4000 Amps)ST Band = 0.2 (I^x)t = OUT
CB20ABB SACE PR221 (T4)Sensor = 250LT Pickup = 1 (250 Amps)LT Band = 12sST Pickup = 7.5 (1875 Amps)ST Band = 0.1s (I^x)t = INOverride = 3000 Amps
Cable42 - P
CB50 - 3P
10K.5 1 10 100 1K3 5 30 50 300 500 3K 5K
Amps X 100 STG MCC (Nom. kV=0.4, Plot Ref. kV=0.4)
10K.5 1 10 100 1K3 5 30 50 300 500 3K 5K
Amps X 100 STG MCC (Nom. kV=0.4, Plot Ref. kV=0.4)
1K
.01
.1
1
10
100
.03
.05
.3
.5
3
5
30
50
300
500
Se
cond
s1K
.01
.1
1
10
100
.03
.05
.3
.5
3
5
30
50
300
500
Seconds
ETAP Star 12.0.0C
Ess MCC - STG MCC
Project: 120 MW Combine Cycle GT PowerLocation: CILEGON BANTEN INDONESIAContract:Engineer: Selvakumar SFilename: C:\0 Projects\KDL\Relay Coordination\rc\KDL LV.
Date: 06-14-2013 SN: ABBGLOBALRev: BaseFault: Phase
Essential MCC
STG MCC
Cable42
1-4/C 120
CB20
CB28
CB50
Essential MCC
STG MCC
Cable42
1-4/C 120
CB28
CB20
CB50
CB31Test PR121 NewFrame = 1000 Plug = 1000 AmpsLT Pickup = 1 (1000 Amps)LT Band = 36ST Pickup = 6 (6000 Amps)ST Band = 0.4 (I^x)t = OUT
CB51ABB SACE PR121Frame = 1200 Plug = 1200 AmpsLT Pickup = 0.85 (1020 Amps)LT Band = 24ST Pickup = 5 (6000 Amps)ST Band = 0.3 (I^x)t = OUT
LOAD CENTRE 1
Cable5 - P2 - 4/C 300 mm²Copper XLPETc = 90CPlotted - 2 x 4/C 300 mm²
CB51 - 3PCB31 - 3P
10K.5 1 10 100 1K3 5 30 50 300 500 3K 5K
Amps X 100 LOAD CENTRE 1 (Nom. kV=0.4, Plot Ref. kV=0.4)
10K.5 1 10 100 1K3 5 30 50 300 500 3K 5K
Amps X 100 LOAD CENTRE 1 (Nom. kV=0.4, Plot Ref. kV=0.4)
1K
.01
.1
1
10
100
.03
.05
.3
.5
3
5
30
50
300
500
Se
cond
s1K
.01
.1
1
10
100
.03
.05
.3
.5
3
5
30
50
300
500
Seconds
ETAP Star 12.0.0C
LC - Essential MCC
Project: 120 MW Combine Cycle GT PowerLocation: CILEGON BANTEN INDONESIAContract:Engineer: Selvakumar SFilename: C:\0 Projects\KDL\Relay Coordination\rc\KDL LV.
Date: 06-14-2013 SN: ABBGLOBALRev: BaseFault: Phase
LOAD CENTRE 1
Essential MCC
Cable5
2-4/C 300
CB31
CB51
Essential MCC
LOAD CENTRE 1
CB51
CB31
Cable5
2-4/C 300
CB49Test SACE PR221 (T2)Sensor = 160ST Pickup = 6.5 (1040 Amps)ST Band = 0.25s (I^x)t = INOverride = 2000 Amps
CB49 - 3P
CB32ABB SACE PR121Frame = 800 Plug = 400 AmpsLT Pickup = 0.4 (160 Amps)LT Band = 48ST Pickup = 10 (4000 Amps)ST Band = 0.4 (I^x)t = OUT
CB32 - 3P
10K.5 1 10 100 1K3 5 30 50 300 500 3K 5K
Amps X 100 LOAD CENTRE 1 (Nom. kV=0.4, Plot Ref. kV=0.4)
10K.5 1 10 100 1K3 5 30 50 300 500 3K 5K
Amps X 100 LOAD CENTRE 1 (Nom. kV=0.4, Plot Ref. kV=0.4)
1K
.01
.1
1
10
100
.03
.05
.3
.5
3
5
30
50
300
500
Sec
onds
1K
.01
.1
1
10
100
.03
.05
.3
.5
3
5
30
50
300
500
Seconds
ETAP Star 12.0.0C
ABB Global HRSG
Project: 120 MW Combine Cycle GT PowerLocation: CILEGON BANTEN INDONESIAContract:Engineer: Selvakumar SFilename: C:\0 Projects\KDL\Relay Coordination
Date: 04-05-2013 SN: ABBGLOBALRev: BaseFault: Phase
LOAD CENTRE 1
HRSG MCC 1
CB49
Cable10
1-4/C 120
CB32
Cable10
1-4/C 120
LOAD CENTRE 1
CB49
CB32
ANNEXURE 6:
Restricted Earth Fault Protection, Synchronism Check and Under
Voltage Protection
Restricted Earth Fault Protection:
Sl.No Parameter Values Unit Set Value
1 Reference nominal Current 1 – 100000 A 800
2 Unbiased region threshold 0.05 – 0.5 Ir 0.1
3 Unbiased region limit 0.01 – 1 Ir 0.5
4 Slightly biased region slope 0.01 – 2 ‐ 0.7
5 Slightly biased region slope 0.01 – 2 Ir 1.25
6 Heavily biased region slope 0.1 – 1 ‐ 1
7 Relay operate angle 60 – 180 Deg 75
8 Time 0.04 – 100 s 0.04
Synchronism Check:
Sl.No Parameter Values Unit Set Value
1 Delta Voltage 0.02 – 0.4 Pu 0.05
2 Delta Phase 5 – 50 Deg 10
3 Time 0.2 ‐ 1000 s 100
Under Voltage
Sl.No Parameter Values Unit Set Value
1 Lowest Voltage = 0 used
2 Start Value U<, U<< 0.1 – 1.2 pu 0.8
3 Time 40 ‐ 30000 ms 5000
4 Start Value U<, U<<< 0.1 – 1.2 pu 0.7
5 Time 15 ‐ 30000 ms 2000
Note:
Settings for under voltage and Synchronism check are based on our experience. Setting shall be
modified to meet the local regulations and operational requirements.