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Webinar on
Innovations in PQ interventions
21st May 2015
Amit Raje
Managing Director,
Aartech Solonics Limited
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PQ in India – An Overview
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Ref: http://eoimages.gsfc.nasa.gov/images/imagerecords/55000/55167/earth_lights.jpg
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Discussion Points
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• Key PQ Real Time Issues for Industries /
High End Consumers
• Some Innovations in PQ in India including
Real Life Examples and Case Studies
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Connecting the Dots…
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– Process Trips / Downtimes ?
– Equipment Damage – Out of Spec Use ?
– Safety Violating Incidents / Accidents ?
– Unanticipated Bills to Pay ?
– Unproductive Efficiency Building / Cost Cutting
Measures ?
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PQ Real Time Issues for Industries /
High End Consumers • Process Continuity
– Seamless Transfer to Online Standby Source
– Reliability of Backups
– Uninterrupted Power Systems
– ‘Spurious Trips’
• Safety / Operational Flexibility
– Short Circuit Levels
• Tariff / Regulatory Compliance
– Dynamic Reactive Power Compensation
– Harmonic Filtering
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Process Continuity –
Fast Bus Transfer Systems Power Generation / Continuous Process Industries
BTS 2000 Fast Bus Transfer Systems - Aartech
30+ Years of Rich Experience, R&D
400+ Bus Transfer Systems executed all over India.
Total Installation Impact > 50000 MW
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BTS
M
M
GT
GENERATOR
GTB EHV BUS STB
ST
ST I/C
UNIT
BOARD
TIE-1 TIE-2
(NC)
UAT
UAT I/C
STATION
BOARD
Fig. 1. Thermal power plant: Main-Tie BTS configuration.
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Spin down characteristics of an open circuit motor bus
MOTOR BUS
VOLTAGE PHASOR
(VBUS)
NORMAL SOURCE
VOLTAGE PHASOR
(VNORMAL)
VOLTAGE COLLAPSE
AND PHASE DECAY
CHARACTERISTICS
OF THE MOTOR BUS
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Reliable Engine Starting Railways, Defense, Heavy Earth Moving Equipment, Marine, DG Sets, Fire
Pumping Engines, Fleet Applications
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Uninterrupted Power Data Centers, Textile, CNC Machining, Fire Protection,
• PureWave™ Offline Medium Voltage
UPS Solutions for Whole Facility
Protection from M/s S&C Electric, USA
– Data Centres
– Mission Critical Applications
• FaraDigm® Short Duration UPS
– Discrete DC/AC UPS solutions for 5-30
second backup before Safe Shut Down /
Ride-through for Power Quality Events such
as Voltage Sags / Changeovers
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Fault Current Limiting Power T&D, Cement, WHR Generation, Wind
• CLiP® Current Limiting
Protectors
Fault Current Limiters –
M/s G&W Electric Co. USA
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Dynamic Reactive Power Management PureWave® DSTATCOM
– S&C Electric Co. USA
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Source DSTATCOM
L
+
+
-
-
Vs Vdstat
I
+
-
Inverter sizes +1 to +32 MVAR in 1-
MVAR increments
Shunt capacitors or reactors can shift
the range
2-4 millisecond response time
Short-term overload of 330% for 2
seconds
• Mining Operation – 17 x 75-250 HP Motors
=> 8-12% Voltage Flicker
+/- 2MVAR DSTATCOM + 2MVAR Cap Bank
• Wood Processing – 3 x 400 HP Motors
=> 6% Voltage Flicker
+/- 2MVAR DSTATCOM
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+52
+16
0
-16
DSTATCOM Output (MVAR)
Switched Cap Banks
+60
+40
+20
0
Cap Bank 1
Cap Bank 3
Total Continuous Output +112
+40
0
-16
Cap Bank 2
Output Comparison SVC vs DSTATCOM with
330% Short-Term Overload
0.00
0.50
1.00
1.50
2.00
2.50
3.00
3.50
1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3
Voltage (p.u.)
MV
AR
DSTATCOM
SVC
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Case Study..
• FaraDigm® Short Duration UPS –
– Textile OEM supplies Regular Battery Based Online UPS
along with Equipment
– End User has to invest in Battery Replacement every 2-3
years, approx. Rs 60-70k / UPS
– Actual Need is for 15-30 seconds (and not 15-30
minutes) as Safe Shutdown / Diesel Gen Sets are
available as backup – Scope for Innovation !!
– Short Duration Battery Less UPS offers 10 Year Lifetime,
with 3 Year ROI, Compact, Low Footprint, Weight,
Portability, WYSIWYG Solution.
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Case Study…
• BTS 2000 Fast Bus Transfer System
– Helps avoid Power Cuts, Loss of Revenue,
Process Downtime, Material Wastage,
Equipment Stress, Personnel Anxieties and
Safety Hazards…
– Potentially Single Operation ROI !
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ESMI Initiative (Prayas, Pune)
• Finalist at Google Impact Challenge, 2013
• www.watchyourpower.org
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