PPHVC – Power Quality Solutions ABB PQC-STATCON …file/pqc+statcon.pdf · ABB PQC-STATCON...

ABB PQC-STATCON Benefits and advantages

PPHVC – Power Quality Solutions

Reasons for investing in power quality Poor power quality costs

© Abb group May 20, 2013 | slide 2

Sector Financial loss per incident

Semi-conductors production(*) 3 800 000 €

Financial trade(*) 6 000 000 € per hour

Computer center(*) 750 000 €

Telecommunication(*) 30 000 € per minute

Steel industry(*) 350 000 €

Glass industry(*) 250 000 €

Offshore platforms 250 000 – 500 000 € per day

Dredging/land reclamation 50 000 – 250 000 € per day

(*) European Copper Institute 2002

Reasons for investing in power quality Examples of impact of poor power quality

© ABB Group May 20, 2013 | Slide 3

Losses/ year

CO2 emissions/year

Small/medium transformers 3000 € 30 T

Large transformers 10 000 € 100 T

LV cables (per 100 m) 1500 € 15 T

Motors 10% additional losses

10% additional emissions

Note: Actual results may be different from examples. Values given do not constitute a performance guarantee and depend on local conditions

Reasons for investing in power quality Power factor and unbalanced loads


Higher penalty due to poor power factor

Setting-up high power quality target by utilities

Rebate on electricity bills for achieving higher power factor (e.g. India, Bangladesh etc.)

Lowering the operating and maintenance cost of the electrical installations

Release more production capacity

Potential fuel savings from captive generators for low power factor loads


Technical problems created by poor power factor

P – Real power Q – Reactive power H – Harmonics

LOA

D

Source

P, Q h

Protecting devices may trip due to overload

The voltage output of the transformer may become too low, loads may refuse to start

Impermissible voltage variations on the feeding network especially for dynamic loads

Utility requirements for power factor (cos ϕ) and voltage variations may not be met, resulting in connection refusal

Technical problems in weak networks , e.g. captive generators, over compensation problems

Technical problems created by unbalance


Protecting devices may trip

The diesel generators will fall out of synchronisation

Line losses will go up considerably

Increase in mechanical stress on transformer cores

The tripping of motors due to negative torque


Unbalance & reactive power compensation

(Assuming Line Resistance is R)

Eliminating unbalance - energy efficiency perspective

2-Ph Load

P (kW)

3-Ph Load

P (kW)

50 % reduction in losses

3 P

hase

Sou

rce

3 P

hase

Sou

rce

System Losses comparison with balance / Unbalance Loads

Where do fast reactive power variations & unbalance come from?


Examples: Steel plants ( small arc & induction furnaces, rolling mills)

Automobile industry (welding loads)

Railways (unbalance single phase loads)

Off shore applications

Many other process industries

ABB PQC-STATCON range


Answer to key power quality problems Instantaneous, stepless

inductive and capacitive dynamic reactive power compensation

Balancing of unbalanced loads

Your Benefits Trouble-free operation of electrical

system and less down-time Compliance with regulations Possible reduction of running costs

and CO2 emissions

Product portfolio

PQCS PQCT PQCT-Light

(PQCL)

PQC-STATCON technology and benefits


Technical reasons Sensitive installations require

transient free & precise reactive power compensation

More and more loads tend to have capacitive power factor

Your Benefits Reduces system losses Integrity of sensitive

installations UPS systems can run at

nominal rating Generators run without

tripping

Stepless power factor correction with settable target for inductive and capacitive loads



Technical reasons Unbalanced load current

increases the feeder line current losses

Equipment failure/premature ageing

Your Benefits System losses Installation down-time Stress in line conductor Installation lifetime Meeting the utility guideline to

avoid penalty / refusal of connection

Incorporation of load balancing technology

Balancing line to line


PQC-STATCON technology and features

Green PQC-STATCON Current Blue Supply Voltage Magenta Step Response

Instantaneous reaction to step changes Fast dynamic response ( < 1 cycle) Excellent steady state / transient stability Native closed loop operation, open loop operation is also

possible Four cascaded control loops

Instantaneous and precise control

Response time:

8.062ms (Rise)

Response time:

8.002ms (Fall)



Technical reasons Unfavorable ambient

conditions Can be installed at small

locations Long service lifetime

Your Benefits Optimal protection of any

installation under any conditions

Low maintenance and servicing costs

Designed for demanding applications

Compact design High grade components


Operation with parallel fixed capacitor banks

Operation with parallel fixed capacitor banks (existing/new)

Cost effective - more kvar / $

-100%

100%

PQC-STATCON

+ 0%

100%

Fixed capacitor

= 0%

200%

Total solution

-100%

100%

PQC-STATCON doubling the dynamic compensation range with parallel capacitor banks.



Energy save mode Programmable option IGBT converter is switched off after 30 s, during idle

condition Cooling system is turned off, after 2 minutes POC-STATCON enters deep sleep mode Delivers rated kvar within 8 cycles(from sleep mode) of

load demand

Energy efficient operation



Technical reasons Different settings are

possible depending on customer need

No need for manual intervention after power outage

Your Benefits

The equipment works in the most efficient way without need for manual intervention

Designed with the customer in mind Main and auxiliary settings Auto-restart function



Technical reasons Full redundancy required

in critical applications (welding loads, rolling mills, furnace applications and other critical processes)

Your Benefits Optimal protection of any installation

under any conditions Individual units may be switched off

while still maintaining acceptable compensation

Full redundancy feature on PQC-STATCON systems by using master-master approach



Technical reasons Short commissioning time is

critical in demanding applications

The network quality can be supervised at all times

Your benefits Protection available with minimal downtime

User Friendly touch screen GUI (Graphical User Interface) which enables easy operation

Advanced diagnostic capabilities Fault logger up to 250 fault logs with date

& time Access to network measurements


PQC-STATCON technology and its benefits

Rugged protections - PQC-STATCON

Over current protection DC over voltage protection IGBT short circuit protection Over temperature protection Cooling system failure detection

IGBT stack failure detection Supply overvoltage/under voltage

protection Switchgear acknowledgement

feedback errors Unstable grid detection Door open detection

Reliability is an important factor!

Protection from Over-current Protection from DC overvoltage


PQC-STATCON ratings

PQCS

PQCT PQCT-Light (PQCL)

S. No Type No. Application Voltage kVAr Amp (Ir)

1 PQCS-50-V240 1-Ph 240 50 210

2 PQCS-100-V240 1-Ph 240 100 420

3 PQCS-100-V415 1-Ph 415 100 240

4 PQCS-150-V415 1-Ph 415 150 360

5 PQCS-250-V415 1-Ph 415 250 600


1 PQCT-100-V415 3-Ph 415 100 140

2 PQCT-150-V415 3-Ph 415 150 210

3 PQCT-250-V415 3-Ph 415 250 350

4 PQCT-300-V415 3-Ph 415 300 420

For MV applications: PQC-STATCON supports operation through step down transformer


1 PQCL-70-V415 3-Ph 415 70 100

Environmental friendly Case study


Railway application: At 18 traction substations of

Indian railways a combination of power factor correction equipment and filters were installed

Results: Improvement in power factor Reduction of greenhouse gas emissions

PQC-STATCON helps realize energy savings Case study – Fiat India Ltd.


Customer inquiry Fast response reactive power compensation for weld shop To maintain power factor close to unity Reliable reactive power system with power saving mode during lean

hours / shift

ABB response High end solution of PQC-STATCON for fast reactive power

compensation. Response time : typical less than 1- 2 Cycles 1200 kvar and 600 kvar offered giving Supply PF near to unity STATCON in energy saving mode goes in sleep mode during no load

condition Customer benefits Power saving, less wastage of welding electrodes Up to 20% of saving in electricity consumption from grid Reduction in electricity bill due to power factor improvement


We are happy to inform you that with ABB make STATCON, we are able to maintain an average monthly power factor above 0.995 lag to unity(1.0). This has indubitably improved performance of our plant loads by improving the total power quality.

Happy customers of PQC-STATCON (welding loads)

Conclusions


Your benefits of having instantaneous stepless compensation of reactive power and unbalanced loads Reduction of technical problems Compliance with utility regulations Increasing the production efficiency Rendering your installation more

environmental friendly

ABB Reliability ABB has a vast experience in evaluating

and addressing power quality issues and can provide the best possible power quality solutions

Together we can improve the power quality of electrical installations

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