Power Generator For MT-8B
Power Generator For MT-8B
Power Generator For MT-8B
Generator
Iqbal Nusya Perdana
Electrical Facilities & Project Engineering
AGENDA
Basic Generator
Basic Generator
DISCUSSION
Convert mechanical energy into electrical energy
A direct result of Faradays work on induction
Basically, the inverse of the electric motor which converts
electrical energy to mechanical energy
Mechanical Energy
Faraday
Laws
1st Whenever a conductor cuts a magnetic field vv an emf is
induced in it.
2nd The magnitude of induced emf is equal to the rate of
change of flux linkage.
N
e
t
e induced emf
N number of turns of coil
/t rate of flux change
BasicGeneration
1
C
y
c
l
e
=2f
f = electrical frequency, usually
50 Hz or 60 Hz
Frequency
the units of frequency (hertz or cycles/sec.)
The frequency of the generated voltage is dependent on the number of
field poles and the speed at which the generator is operated, as indicate
in Equation :
where:
f
P
N
120
pairs
NP
f
120
=
=
=
=
frequency (Hz)
total number of poles
rotor speed (rpm)
conversion from minutes to seconds and from poles to
pole
GeneratorConstruction
SinglePhasePoleOutside
SinglePhasePoleInside
GeneratorConstruction
SinglePhase2Poles
3PhasesGenerator
GeneratorParts
10
GeneratorParts
Prime
Mover
Rotor
11
GeneratorParts
Thestatorof an AC generator is the part that is stationary.
Stator
Slip Rings
GeneratorParts
Field
Armature
13
Generator Operation
14
Generator Nameplate
Typical name plate data for an AC generator includes:
manufacturer
serial number and type number;
speed (rpm), number of poles, frequency of output, number of
phases, and maximum supply voltage;
capacity rating in KVA and kW at a specified power factor and
maximum output voltage;
armature and field current per phase; and
maximum temperature rise.
16
21
Power Triangle
P = Active Power
Q = Reactive Power
S = Apparent Power
22
Power Triangle
23
24
26
27
PROBABLE CAUSE
No Voltage
REMEDY
Locate and repair
Adjust and repair
29
PROBABLE CAUSE
Low Voltage
REMEDY
Adjust
30
TROUBLE
PROBABLE CAUSE
High Voltage
Check connection,
fuses etc.
- Sensing transformer T1
and T2 connected wrong
tap
Check connections
REMEDY
Replace rectifier
module
Perform bench test
Replace
31
TROUBLE
PROBABLE CAUSE
Generator
Voltage
hunting
(oscillating)
at no load
- Frequency unstable
-Improperly adjusted
stabilizing circuit
REMEDY
Check prime mover
speed
Adjust R33
-Defective exciter or
generators
- Defective PC board
Replace
32
TROUBLE
PROBABLE CAUSE
REMEDY
Generator
voltage
fluctuating
with
irregular
intervals
- Loose connection
Check
- Induced interference
Add resistance in
series with field
33
PROBABLE CAUSE
REMEDY
Poor generator
voltage
regulation
- Voltmeter in different
location than regulator
sensing point
Connect voltmeter
across regulator
terminals E1 and E3
- Reactive current
compensation causing
droop
Make inoperative by
shorting secondary
side of CT and open
wiring at regulator
terminals 1 and 2
Check regulator
output voltage
-Supply voltage at
terminals 3 and 4 too low
- Defective PC board
Replace
34
TROUBLE
PROBABLE CAUSE
Parallel
- Prime mover governor
generation not not properly adjusted
dividing real
(KW) load
REMEDY
Refer to governor
instruction
35
PROBABLE CAUSE
Parallel
generators not
dividing
reactive
(KVAR) load
Check, add
resistance if
necessary
- CT connected with
reverse polarity
Reverse connections
- CT secondary terminals
shorted out
REMEDY
Check current
(between 3-5 amp)
at regulator
terminals 1 or 2. Do
not open circuit
under load
Check
36
DROOP MODE
ISO MODE
Generator
Driver
Operation Mode
Governor
31PG-1
DG
DROOP
31PG-2
STG
DROOP
Back Pressure
31PG-3
STG
DROOP
Back Pressure
31PG-4
STG
ISOCH
Condensing
31PG-5
STG
ISOCH
Condensing
31PG-6
STG
DROOP
Back Pressure
31PG-8
STG
DROOP
Back Pressure
31PG-9
STG
DROOP
Back Pressure
31PG-10
STG
DROOP
Back Pressure
31PG-11
STG
ISOCH
Condensing
31PG-12
STG
ISOCH
Condensing
31PG-13
STG
DROOP
Back Pressure
31PG-14
STG
ISOCH
Condensing
31PG-15
GTG
ISOCH
Generator Protection
41
SINGLE LINE
DIAGRAM POWER
G E N E R AT I O N
REACTOR
352-16
352-15
30PS-101, 34.5 KV
( MODULE-1 )
352-1
352-2
352-3
352-6
352-5
352-4
30PS-201, 34.5 KV
( MODULE - 2 )
352-7
352-14
352-13
352-8
352-9
352-10
352-11
352-12
REACTOR
30PT-102
30PT-101
30PT-103
30PT-104
30PT-202
30PT-201
30PT-203
30PT-204
NEW 31PG-1
31PG-1 31PG-2
30PS-1, 13.8KV
31PG-3
31PG-4
30PS-2, 13.8KV
31PG-5
31PG-6
30PS-3, 13.8KV
31PG-8
30PS-4, 13.8KV
31PG-9
30PS-5, 13.8KV
31PG-11 31PG-12
30PS-6, 13.8KV
31PG-10
31PG-14
30PS-7, 13.8KV
31PG-13
31PG-15
30PS-8, 13.8KV
TVP
PROTECTION SYSTEM
No.
DEVICE
REMARK
1.
32
GGP53B
2.
40
CEH51A3A
3.
46
INC77N2A
4.
51 V
IFCV / IJCV
5.
51 GN
6.
59
7.
60
8.
87 G
9.
87 GG
10
86 G
MODEL
IAC
IAV52A4A
NGV12A11A
CFD22B3A
ICC
Introduction
Since the fault of the generator from the system will
interrupt the operation of electric power systems.
Generator needed to be protected from all the
fault that will damage the generator.
Generator damage will disturb the supply of
electricity.
Cause selectivity of the protection system, CB is
expected to not easily trip because of fault in the
system.
48
49
50
51
52
53
STEP 1
LOAD SHEDDING
SYSTEM
RELAY
STEP
SETTING
FEEDER
LOAD
81-1
Step 1
49.0 Hz
252-12
PSF Area
252-15
S/L Substation
252-18
Community
252-162
252-163
252-21
PSF Area
252-25
S/L Substation
252-28
Community
252-262
252-263
252-264
81-3
81-2
81-4
Step 3
Step 2
Step 4
48.3 Hz
48.7 Hz
48.0 Hz
PROTECTION SYSTEM
60
Thank
you