harmonic mitigation - holistic approach · pq harmonic solutions pros and cons of available...
TRANSCRIPT
![Page 1: Harmonic Mitigation - Holistic approach · PQ Harmonic Solutions Pros and Cons of available technologies •Active harmonic filter and/or STATCON –Standard product and assuming](https://reader034.vdocuments.us/reader034/viewer/2022043005/5f8a6ff53c2d1c01a10775f5/html5/thumbnails/1.jpg)
Harmonic Mitigation - Holistic approach
Date: 28th November 2015
![Page 2: Harmonic Mitigation - Holistic approach · PQ Harmonic Solutions Pros and Cons of available technologies •Active harmonic filter and/or STATCON –Standard product and assuming](https://reader034.vdocuments.us/reader034/viewer/2022043005/5f8a6ff53c2d1c01a10775f5/html5/thumbnails/2.jpg)
2
Why Power Quality?
Looking from the bottom of the Power System Pyramid
• Brownfield or Greenfield project
– Slash down Capital investment cost
– Minimize equipment foot print
– Achieve ultimate in Energy Conservation; the
least SEC in terms of kWh/ unit of production
– Get the best possible Quality of Product, and
enhance volume and consistency in production
– Slash down reworks and rejections in QC.
– Achieve 3P; Power, Productivity & Profitability
![Page 3: Harmonic Mitigation - Holistic approach · PQ Harmonic Solutions Pros and Cons of available technologies •Active harmonic filter and/or STATCON –Standard product and assuming](https://reader034.vdocuments.us/reader034/viewer/2022043005/5f8a6ff53c2d1c01a10775f5/html5/thumbnails/3.jpg)
3
Why Power Quality?
Looking from the bottom of the Power System Pyramid
• Achieve immunity from electrical flash/blast
![Page 4: Harmonic Mitigation - Holistic approach · PQ Harmonic Solutions Pros and Cons of available technologies •Active harmonic filter and/or STATCON –Standard product and assuming](https://reader034.vdocuments.us/reader034/viewer/2022043005/5f8a6ff53c2d1c01a10775f5/html5/thumbnails/4.jpg)
4
Why Power Quality?
Looking from the bottom of the Power System Pyramid
• Achieve immunity from electrical flash/blast
![Page 5: Harmonic Mitigation - Holistic approach · PQ Harmonic Solutions Pros and Cons of available technologies •Active harmonic filter and/or STATCON –Standard product and assuming](https://reader034.vdocuments.us/reader034/viewer/2022043005/5f8a6ff53c2d1c01a10775f5/html5/thumbnails/5.jpg)
5
Why Power Quality?
Looking from the bottom of the Power System Pyramid
• Achieve immunity from electrical flash/blast
![Page 6: Harmonic Mitigation - Holistic approach · PQ Harmonic Solutions Pros and Cons of available technologies •Active harmonic filter and/or STATCON –Standard product and assuming](https://reader034.vdocuments.us/reader034/viewer/2022043005/5f8a6ff53c2d1c01a10775f5/html5/thumbnails/6.jpg)
6
Why Power Quality?
Looking from the bottom of the Power System Pyramid
• Troubleshoot– Bizarre failures 33/.16kv EAF
![Page 7: Harmonic Mitigation - Holistic approach · PQ Harmonic Solutions Pros and Cons of available technologies •Active harmonic filter and/or STATCON –Standard product and assuming](https://reader034.vdocuments.us/reader034/viewer/2022043005/5f8a6ff53c2d1c01a10775f5/html5/thumbnails/7.jpg)
7
Why Power Quality?
Looking from the bottom of the Power System Pyramid
• Troubleshoot – Bizarre failures, 33/1-1kv IF
![Page 8: Harmonic Mitigation - Holistic approach · PQ Harmonic Solutions Pros and Cons of available technologies •Active harmonic filter and/or STATCON –Standard product and assuming](https://reader034.vdocuments.us/reader034/viewer/2022043005/5f8a6ff53c2d1c01a10775f5/html5/thumbnails/8.jpg)
8
Why Power Quality?
Looking from the bottom of the Power System Pyramid
• Troubleshoot– repetitive failures or issues
– Reduce high Temp; TRF, alternator, switchgear
– AVR fluctuation, synchronization rejection,
exciter diode failures.
– Governor fluctuation raising turbine nozzle
chest pressure, limiting generation capacity
– Damage to turbine/bearing/lining and gearbox
– Power plant tripping leading to blackout
![Page 9: Harmonic Mitigation - Holistic approach · PQ Harmonic Solutions Pros and Cons of available technologies •Active harmonic filter and/or STATCON –Standard product and assuming](https://reader034.vdocuments.us/reader034/viewer/2022043005/5f8a6ff53c2d1c01a10775f5/html5/thumbnails/9.jpg)
9
PQ Harmonic Solutions
Pros and Cons of available technologies
• Detuned HF
– Standard product
without specific
design need. Can’t
control harmonics.
– Provide Reactive
power compensation
– It blasts, if harmonics
are significant
![Page 10: Harmonic Mitigation - Holistic approach · PQ Harmonic Solutions Pros and Cons of available technologies •Active harmonic filter and/or STATCON –Standard product and assuming](https://reader034.vdocuments.us/reader034/viewer/2022043005/5f8a6ff53c2d1c01a10775f5/html5/thumbnails/10.jpg)
10
PQ Harmonic Solutions
Pros and Cons of available technologies
• Active harmonic filter and/or STATCON
– Standard product and assuming at its best, it
can provide only harmonic but not PQ Solution
– Based on power system conditions, it magnify
THDv, and complicate Harmonic Problem
– With high harmonic loads it goes off the track,
magnify even THDi causing issues/ failures.
– It does not relieve equipment derating. Active
HF fail frequently, if harmonics are high enough.
![Page 11: Harmonic Mitigation - Holistic approach · PQ Harmonic Solutions Pros and Cons of available technologies •Active harmonic filter and/or STATCON –Standard product and assuming](https://reader034.vdocuments.us/reader034/viewer/2022043005/5f8a6ff53c2d1c01a10775f5/html5/thumbnails/11.jpg)
11
PQ Harmonic Solutions
Pros and Cons of available technologies
• Tuned harmonic filter – fixed, variable, SVC
– Custom built product that needs significant
design effort.
– Provide Power Quality, and Harmonic solutions
as well as Reactive power compensation
– Either Fixed or Variable HF meets almost all
types of load requirement
– Only few exceptionally large loads like EAF, of
say >50mw ratings, requires SVC.
![Page 12: Harmonic Mitigation - Holistic approach · PQ Harmonic Solutions Pros and Cons of available technologies •Active harmonic filter and/or STATCON –Standard product and assuming](https://reader034.vdocuments.us/reader034/viewer/2022043005/5f8a6ff53c2d1c01a10775f5/html5/thumbnails/12.jpg)
12
Typical Tuned Harmonic Filter4000kva, 11/ 0.575-
0.575kV, Dd0yn5
DTR –2x 265kW, 275 vdc ETR –2x 265kW
Mill –1x 500kW, 550 vdc Mill –1x 500kW
To, To,
Harmonics flow
2x “Encon Ih Filter” – 5th Tuned
Mill –2x 500kW, 550 vdcDTR –2x 265kW, 275 vdc