An environmental way to - Bienvenidos | Zigor€¦ · Xiamen Yinlu Foods (Nestle Group) – Fujian,...
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Transcript of An environmental way to - Bienvenidos | Zigor€¦ · Xiamen Yinlu Foods (Nestle Group) – Fujian,...
An environmental way to
Grupo Zigorwww.zigor.com
An environmental way to tackle the voltage dip
problems and solutions
AC POWER QUALITY PROBLEMS
Reality of a complex AC Distribution
Electrical equipment is occasionally exposed to transient overvoltages (surges/spikes),swells, flickers, unregulated voltages, voltage dips/sag s, interruptions or waveformdisturbances (power factor, harmonics, others).
AC POWER QUALITY PROBLEMS
Disturbances Critical Industrial Process or Loads
Economical Losses& “CollateralDamages”
SWELLS < 1%
INTERRUPTIONS < 1%
SURGES / FLICKERS /
FREQUENCY OF OCCURRANCE OF AC DISTURBANCES
Case of Spain Utility Network
DIPS / SAGS> 78%
< 1% < 1% FLICKERS / HARMONICS< 20%
� According to internationally adopted definition (un der European standard EN 50160), a voltage
dip (UK), Voltage Sag (US) occurs when the voltage d rops to a level below 90% of standard
power supply voltage
� Most voltage dips last < 0.1 second
WHAT IS A VOLTAGE DIP OR SAG ?
� Most voltage dips last < 0.1 second
� During a voltage dip, power supply not interrupted
1. Overhead lines intervened by adverse weather (Lig htning), overgrown vegetation and wild
animals, etc.
2. Underground cables damaged by third party
3. Failures of power supply equipment
4. Starting of heavy machine or short circuit fault nearby
CAUSES OF VOLTAGE DIP
IMPORTANCE OF PRIOR DIAGNOSIS
Phases of Engineering for the resolution of problems relate d to the Power Supply:
• Measurement and Analysis of the Power Quality at site
• Technical Audit of the electrical installation.
• Determining sensitivity of equipment and processes.
• Green PQ Proposal and Implementation
PQ Audits and Studies
Green PQ Solutions
• Green PQ Proposal and Implementation
GREEN OPTIONS WITHIN POWER QUALITY SOLUTIONS
GREEN PQ SOLUTION FOR VOLTAGE INTERRUPTIONS
DVC SEPEC
107%
90%
Vn93%
2Flicker
1Surges Waveform
and Faults
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AVC SET DVR
Bypass
Maintenance switch (manual bypass)
I2
DVC SEPEC BLOCK DIAGRAM
Neutral linegenerator
option
N
Brake option
3x400V3x400V MIT Charger
InverterModule(s)
Bypass
Batteries
I1 I3
S1
Input switch Output switch
Normal mode Emergency mode Maintenance mode
Bypass
Maintenance switch (manual bypass)
I1
I2
I3
DVC SEPEC WORKING MODES
Neutral linegenerator
option
N
Brake option
3x400V3x400V MIT Charger
InverterModule(s)
Batteries
S1
Input switch Output switch
Performance for a black-out with regenerative load, return of energy and a
control board equipped with a PLC and network (hubs) communi cation system.
BLACK-OUT SOLUTION : DVC SEPEC INDUSTRIAL UPS
Characteristics of the Dynamic Voltage Compensator SEPEC:�High System Efficiency over 99%
�Relatively small Battery is required when compared with UPS
DVC SEPEC : GREEN ADVANTAGES
�Relatively small Battery is required when compared with UPS
�Off-line (Stand-by) static power electronic system
�Minimum O&M cost (extremely low losses, low maintenance, etc.)
�Mitigation of Short Interruptions (up to 5 minutes)
�Very fast response: typical less than 1/4 cycle
�Compatible with already existing Protection Systems.
�Compatible with Diesel Generation System (Genset).
�Compatible with Regenerative Loads (Industrial Motors).
�Very Low Harmonic Distortion.
�Advanced System for Management, Control and Diagnosis of batteries.
Process Description:
� Milk / dairy products continuous production line
DVC SEPEC : A CASE STUDY IN CHINA
Xiamen Yinlu Foods (Nestle Group) – Fujian, China
Problem solved in case of black-out:�Bacteria growth
�Cleaning of production line
�Re-start production cost
The Green PQ Solution: �2x DVC SEPEC 400kW
� Installation Year: 2007
Process Description:
� Electronics and home appliances continuous productio n line
DVC SEPEC : A CASE STUDY IN RUSSIA
LG Electronics – Russia
Problem solved in case of black-out:� Frequent voltage drops at the networks of Ruzkoho fee ding area
� Tripping of the cooling pump, resulting in a malfun ction of the technological manufacturing process.
�Re-start production cost
The Green PQ Solution: �1x DVC SEPEC 200kW
� Installation Year: 2015
DVC SEPEC
GREEN PQ SOLUTION FOR VOLTAGE SAG / DIP
107%
90%
Interruptions3 4 5
Unregulated Voltage
Sag / Dip
Vn93%
2Flicker
1Surges Waveform
and Faults
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DIP AVC SET DVR - BLOCK DIAGRAM
703EN00
AVC SET DVR - DYNAMIC RESPONSE
703EN00
Characteristics of the Dynamic Voltage Restorer:�No battery / RoHS compliance
�Efficiency approx 98%
�Maximum ROI and less footprint compared with UPS
AVC SET DVR : GREEN ADVANTAGES
�Minimum O&M cost (low losses, low maintenance)
�Capable to mitigate Sags/Dips ( up to 60% )
�Precise Voltage regulation : typical +/- 0.5%
�Very fast response: typical less than 1/4 cycle
�On-line Static Power Electronic System
�Independent Phase Compensation.
� Voltage balancing capability.
�Automatic Bypass.
�Capable to operate with Industrial Regenerative Loa ds (four quadrant converters)
Bypass Mode Normal Mode
AVC SET DVR / WORKING MODES
703EN00
% Nominal V
100
90
80
Output Voltage
Input Voltage
30% Sag40% Sag
AVC SET DVR 40% / PERFORMANCE
703EN00
80
70
60
50
40
30
20
Time (msec)30,000
40% Sag
50% Sag60% Sag70% Sag≥ 80% Sag
AVC SET DVR 20% 30% 40% 50% 60% / PERFORMANCE
3 Phase %V In
AVC DVR 20%
AVC DVR 30%
AVC DVR 40%
AVC DVR 50%
AVC DVR 60%SP
100 100 100 100 100 100
90 100 100 100 100 100
80 100 100 100 100 100
70 90 100 100 100 100
AVC SET DVR 20% 30% 40% 50% 60% / PERFORMANCE
70 90 100 100 100 100
60 80 90 100 100 100
50 70 80 90 100 100
40 60 70 80 90 100
30 50 60 70 80 90*
20 20 20 20 20 80*
10 10 10 10 10 10
0 0 0 0 0 0
Process Description:� Liquid hydrogen continuous production for an oil re finery
� Intermediate material for oil refinery
Problem in case of voltage sag:
AVC SET DVR – OIL REFINERY
AIR PRODUCTS GROUP (Tarragona, Spain) – AVC 2.4MW 6.6kV
� Emergency stop of hydrogen production due to voltag e sag >12% at 6.6kV line, produced by heavy machine ry in the oil refinery or summer storms
�Oil refinery stops as a consequence and takes 3 day s to restart production
�Extremely high non-productive losses in refinery
The Green PQ Solution:�1x AVC SET DVR 2.4MW 6.6kV
� Prepared to be supplied from any of 2 different MV distribution feeders
�Sag protection at MV level for all loads excepts no n-critical services and outdoor lighting
AVC SET DVR – OIL REFINERY
�Installed in March 2009
�With saved production losses, investment paid back in less than 2 years
AVC SET DVR – OIL REFINERY
The system description:
�1x AVC SET DVR 2.4MW 6.6kV + 1x concrete building t o host the unit
�1x MV switchgear + 1x concrete building to host the switchgears
�MV transformer 6.6kV/400V + Booster of MV transform er 6.6kV + 1x concrete building
Process Description:
AVC SET DVR – PLASTIC INJECTION
SOTRAFA (Almeria) – AVC SET DVR 3.6MW 20KV
Process Description:
� Polyethylene film reel continuous production line
Application:� Plastics for agriculture (greenhouse), livestock an d construction
Problem in case of voltage sag :�Production defects due to voltage fluctuation
�Production losses due to clogging of ejector nozzle
�Non-productive hours at cleaning
The Green PQ Solution:
� 1x AVC SET DVR 3.6MW 20kV
� 1x MV input transformer
� 1x MV booster transformer
� 1x MV Switchgear
AVC SET DVR – PLASTIC INJECTION
� 1x MV Switchgear
� Installed in December 2012 at the 20KV substation protecting the whole factory
Process Description:
�Samsung Display is a world class famous Flat Displa y Panel
manufacturer. The FDP production line includes CPT, CDT, LCD,
PDP, VFC, etc.
AVC SET DVR : SAMSUNG DISPLAY
SAMSUNG DISPLAY DONGGUAN CO. LTD (China) – AVC SET DVR 600KVA
PDP, VFC, etc.
�Daily production volume around Euro 10 million.
Problem in case of voltage sag:
� The factory is powered directly from four different 10kV feeders
and summer storms occasionally cause voltage sags. Rarely
blackout for years.
�The consequences of an unexpected shut down are sig nificant:
WIP scraped, and it may take long time to resume th e production
line. this problem causes very high economic losses .
The solution: 7 Sets
�2 sets of 400V AVC SET DVR of 480kVA 50% sag compen sation (first installation worldwide of its kind)
�3 sets of 220V AVC SET DVR of 240kVA 40% sag compen sation
�2 sets of 400V AVC SET DVR of 300kVA 40% sag compen sation
�Installed in July 2013
AVC SET DVR : SAMSUNG DISPLAY
Problem measured & solved
AVC SET DVR : SAMSUNG DISPLAY
SAMSUNG DISPLAY DONGGUAN CO. LTD (China) – AVC SET DVR 480kVA 50%
AVC SET DVR : CUSTOMER SATISFACTION
DVC SEPEC & AVC SET DVR : INSTALLATIONS
> More than 90,000 KVA installed around all the world
> More than 200 Green PQ Solutions installed in presti gious customers
> 15 Different application sectors
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www.zigor.com
Zigor Corporación, S.A.C/Portal de Gamarra nº 2801013 Vitoria-Gasteiz, Álava-Araba, SpainTel: +34 945 214600 · Fax: +34 945 229600
Zigor GroupAMERICAASIAEUROPE
www.zigor.com
