Transcript kk010 - installing of generator protection2009-08

INSTALLING OF GENERATOR
PROTECTION
Understanding the Maintenance Protection
Protection system of electricity is
1. Current
2. Voltage
3. Angle between the two phrases
General, component protection system :
1. Circuit Breaker (CB) and Fuse (fuse)
2. Relay
3. Current Transformer (CT)
4. Potential Transformer (PT)
5. Control cable / wairing
1. Circuit Breaker (CB) dan Fuse
Equipment is directly related to DS (Disconect Switch) is a
means of protecting the occurrence of the excess flow
preventer, which can be sekring or CB.
Picture Circuit Breaker (CB)
DS (Disconect Switch)
2. Relay
Relay adalah peralatan listrik yang berfungsi untuk
melindungi, memutuskan atau menghubungkan suatu
rangkaian listrik yang satu ke rangkaian listrik yang lainnya,
yang bekerja secara otomatis dan dapat dipakai sebagai alat
kontrol jarak jauh.
Gambar Relay
3. Current Transformer (CT)
Current Transformer is a type of instrument transformer
designed to support the current that flows in the secondary coil
proportional to the current pace that flows on the primary.
Current Transformer (CT)
4. Potential Transformer (PT)
Potential transformer is single
phase transformer serves to decrease
the voltage (Step down), the
instrument designed for measurement
/ protection.
Picture Potential Transformer (PT)
5. Control cable / wairing
Conveyer cable as the flow of electricity, the most common material
used is copper (Cu) have because of the nature of the high
electricity Conductivitas.
Cable NYAF
Cable NYFGbY
Cable Twisted
1. Analyzing the data maintenance system with
the protection criteria, including:
a. Data examination and testing of protection systems are
identified to determine the feasibility of operation
suitable standard.
b. The cause of damage or deviation is identified
according to standard equipment.
2. Plan and prepare for the implementation of
the protection system:
a. Resources needed for testing to identify suitable job
specifications.
b. Equipment work (images, intruksi work, etc.) are
interpreted in accordance with the work plan
c. Location work is prepared in accordance with the
purposes and work procedures.
3. Create a report with the maintenance criteria
include:
a. Reports made in accordance with the format and
procedures / intruksi work that has been set.
b. Electrical installation standard maintenance
program includes inspection, maintenance, repair
and re-testing based on the maintenance
instructions which have been determined (PUIL
2000-SNI04-0225-2000)
Protection against failure of the
unit may affect the damage of
the unit as a whole. Therefore
the program should be carried
out maintenance of the system
of protection in accordance with
the provisions of the company
carefully and manufacturer
instructions.
INSTALLING OF GENERATOR
PROTECTION
Understanding the Standard Termination of Protection
PROTECTION SYSTEM REQUIREMENTS
To get a good protection system required several conditions,
among others:
1. Sensitive:
Ability in detecting the minimum disturbance to the
stimulus and only decided that the system is interrupted
only.
2. Selective:
A quality of neatness in the election security.
PROTECTION SYSTEM REQUIREMENTS
To get a good protection system required several conditions,
among others:
3. Fast:
Reaction from the protection system when the
disturbance must occur quickly to minimize the
objective possibility of expansion due to the
disruption caused.
4. Reliable :
Ability protection system in normal circumstances
and in the interference and should certainly work.
So that the reliability of equipment protection
system terga, the required periodic testing.
PROTECTION SYSTEM REQUIREMENTS
To get a good protection system required several conditions,
among others:
5.Economical:
With the cost of a child-protection system is
expected to be able to work well
6. Simple:
System protection devices have required a simple
and flexible.
STANDARD TERMS OF PROTECTION SYSTEM
Standard protection system requirements:
1. Protection system must be able to nominal flow continuously
without excessive heating (overheating).
2. Overload on a small lapse of time that short should not cause
the equipment to work.
3. Protection must be working, even though the overload occurs
a small but long enough so that they can cause overheating
in the series conveyor.
STANDARD TERMS OF PROTECTION SYSTEM
Standard protection system requirements:
4. Protection must be opened before a series of damage
caused by the flow disturbances that can occur;
5. Protection must be able to "separation" (discriminative) only
on the set of the series only and subject to the other should
still operate.
Considerations Choice Protection System
In selecting the system protection are issues that must
be considered, among others:
BENEFITS OF PROTECTION SYSTEM
1. Avoid or reduce damage to equipment due to interference
(abnormal operating condition of the system). The quick
reaction of the protection device is used then the effect will
be less disruption to the possibility of damage to equipment.
2. Quickly localize broad area is broken, may be small;
BENEFITS OF PROTECTION SYSTEM
3. Can provide electricity with high reliability to the customer
and also the good quality of electricity
4. Securing against the human hazards caused by electricity.
Termination Protection Standard
Termination protection standards must be
in accordance with the rules of the
applicable electrical installation as PUIL and
should be dituruti.
Standards referred to both standards, both
local and international standards must be
observed as SPLN, IEC 60947-2.
INSTALLING OF GENERATOR
PROTECTION
Testing Secure of Generator
-
Protection system fails to work at all for the work
-
Failed selektip so that the extinction of a wide
-
Failed to work quickly cause damage to
-
Failure which caused the wrong jo
Technology and Engineering
1. Relay does not work
2. Battery voltage low
3. Wiring secondary protection circuit to short
4. There is damage to the contacts PMT
5. The mechanism of PMT jammed
6. Settings is not correct relenya (less sensitive or less quickly)
7. PMT failure in the flow disturbances that can be caused by the flow
gangguanya too large exceeds the ability of termination (interupting
capability), or the ability pemutusannya has dropped, or because there
is damage;
8. Tele communication channel failure protection.
Technology and Engineering
The steps in conducting the test generation system
protection, among others:
1. Protection system test results recorded according to standard and test
center of power;
2. Test results compared with the standard test centers of power;
3. Test results will be done outside the standard test is believed to have
been reset in accordance with standard test centers of power.
How can I test the implementation of a comprehensive
protection system?
INSTALLING OF GENERATOR
PROTECTION
Manage Secure Settings of Generator
Adjustment More Cash
Adjustment of the relay currents flow over the load flow is
calculated based on the incoming flow dipenyulang or
transformer, means:
1. For more current relays installed in penyulang calculated based on the
maximum load current that flows in these penyulang;
2. For more current relays installed in the incoming transformer are
calculated based on the current transformer is nominal.
Invers regular relays of 1.05 set s.d. 1.1 x Income,
Relays Definit set of 1.2 s.d. 1.3 x I burden.
Adjustment More Cash
Relay Characteristics:
TIME Delay Characteristics
CERTAIN (Definite TIME)
t SET
I SET
I (ampere)
Characteristics definite time: can flow in the setting of a small setting time
Characteristics the Combination
t (seconds)
Characteristics the combination instant
on time inverse pause
I (ampere)
Used for setting and inverse moment
Security Energy SYSTEM TO ELECTRICITY
A
1
2
1
3
B
C
2
4
5
D
6
7
1. Differential Relay Security Main Gen etc.
2. Distance Relay Security Main transmission etc.
3. Differential Relay Security Main transformer etc.
4. Over Current Relay 150 kV transformer the Local Security Backup transformer Security
Reserves Away Bus B
5. OCR GFR and the 20 kV transformer Security Main Bus B1 Security Backup Far
Channel BC
6. OCR and GFR in the B2 channel BC Home Security Security Backup CD Far channel
7. OCR and GFR in the C channel CD Security Main Security Backup Far following section
Coordination Relays
Coordination Relays Definite
A
t
in
Sub 1
= t+ta
Sub2
B
Sub3
t
ta = t+tb
C
t
tb = t+t
51
51G
tc
51
51
51
51G
51G
51G
Coordination Relay Inverse
51
51
51
51
51G
51G
51G
51G
51N
Coordination Relays
1. SMALL GENERATOR (isolated system)
Power: 500 s / d 1000 kVA voltage 600 volt
(maximum)
1- 51V, ba1 - 51V, backup overcurrent
relays, voltage control or voltage
control
1-51G, backup ground time overcurrent
relay
Coordination Relays
2. Medium GENERATOR (isolated systems / parallel)
Power: 500 s / d 12 500 kVA
voltage 600 volt (maximum)
3 - 51V, backup overcurrent relays, voltage
control or voltage control
1-51G, backup ground time overcurrent relay
1 - 87, differential relay
1 - 32, reserve power to control relay protection
1 - 40, Impedance relay, to the loss of field
Security of Area
Security of Area
1. Electric power system divided into several sections - the section. the one with the
other or can be connected by pmt.
2. Each section is secured by relays, each relay and have the security of the area
Security of Area
REGION Security
GENERATOR
REGION Security
GENERATOR-transformer
SECURITY AREA
FROM PEACEMAKER ISTEM
ELECTRIC POWER
REGION Security
BUSBAR
REGION Security
TRANSMISSION
REGION Security
Transformer
REGION Security
BUSBAR
REGION Security
BUSBAR TM
REGION Security
TM NETWORK
Security of Area
Rele The Secondary Flow
CT
GI
Interference
• CT transfer the amount of primary to
produce secondary
+
-
• Rele detectors only work
flow with small  accurate
• Please Volt DC source for
tripping PMT
Characteristics can be selected  Definite, inverse, Very-inverse
or inverse Extreemely.
Security of Area
CT
OCR
+
DC SUPPLY
TR
AUX R
- DC SUPPLY
AUX R
Single Diagram PLTU
46
32
40
37
21 GB
Single diagram pltu
87G
PT
60
CT
G
SWITCHGEAR
59/81
AVR
64F
59
87
AT
51
51N

GT 96
87GT
96
51 51N
RT
51N


87
51N
86G
86GB
A
A1
AB1
B1
B
51N
Single Diagram PLTU
46
32
60
PT
37
40
21
DIAGRAM
SINGLE
PROTECTION PLTU
87G
CT
G
59/81
AVR
64F
59
87
96
AT
51/51N
51/51N
87GT
96
51N
GT
86GB
A
A1
51N
96
51N
86G
RT
87
AB1
B1
B
86RT
IBAA DOC
Electrical Power Plant
THE END