Transcript untapped potential in India

by
A.D.Thirumoorthy
Tamil Nadu Electricity Board
India
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Large untapped potential in India ~ 65,000 – 100,000
MW
Technologies: Synchronous and Asynchronous
Generators (with and without gears), New hybrid
technologies are being introduced
Turbine unit sizes: 500 kW to 1.65 MW, may go up to 2.0
MW in near future
Leading States: Tamil Nadu – 4200 MW, Maharashtra –
1800 MW, Gujarat 1400 MW
Costs ~ Rs 6-6.5 Cr / MW subject to project size, location,
technology
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Leading reactive power raises local voltage
Lagging reactive power lowers local voltage
Add capacitors to counteract low voltage
conditions
Add reactors to counteract high
voltage conditions, Turn off
capacitors
V&I In Wind Mill
Voltage Harmonics
Current Harmonics
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This is a typical case of Wind Mills tripping due to
Voltage Sag
Voltage Sag caused by tripping of another feeder in
the same Sub Station due to earth fault
Rise in load current experienced
Suspect of induction Generator aiding the fault
Sample Dip
Voltage Dip in WM Feeder
-49.61%
Current rise in WM Feeder
+268%
Voltage Dip
-51.4%
Tripping of WM Due to Sag
Loss of WM Generation
-42.5%
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This a case study of Voltage Swell
Voltage swell caused in a Wind Mill connected
feeder
Voltage Swell seen when Wind Mill connected
feeder is isolated manually
Voltage swell due to discharge of Capacitors
connected for PF correction
Voltage Rise in WM During Supply Failure
+11.37%
Voltage Rise in Wind Mill Feeder During
Supply Failure
+15.37%
Bipolar Transient
B-Phase voltage Drop put
Voltage SAG
Voltage Sag
Multiple Zero Crossing
Phase Shift Event
Sample Un-balance of Voltage
Transient
Transient due Tripping of Breaker due
to inrush current
Flicker Data in Wind Mill
Sample Surge in Current
Swell in Current in Wind Mill
Active and Reactive Power in Wind
Mill
Voltage Variation in Wind Mill
Frequency Profile
WM Generation Vs 110 KV Bus Voltage
115
120
09-07-2010
100
110
80
MW
VOLTAGE
105
60
100
40
95
20
HOURS
90
0
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