1. No category

Premset : A New generation of MV
Switchgear
Amith Ganasram
August 15, 2014
Wiki : “Innovation is finding a better way of doing something.
The term innovation can be defined as something original and, as a
consequence, new, that "breaks into" the market or society.”
Schneider Electric - Energy – Premset – Weili Ding - Sep 2013
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What’s Premset and where is it sold ?
● Premset core technical application
● Compact, modular, smart ready switchgear
● Circuit breaker up to 17.5KV, 1250A, 25 KA 3s, IAC 25 KA 0,5s
● Market main application:
● Low-end Primary
● High End Secondary
●Targeted segments
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CIB : Commercial and Industrial Buildings
Utility : MV/MV Substations
Data Centres
Hospital
Industry
MMM
Infrastructure
Schneider Electric - Premset Openline
A4
A4
A3
A1
A6
A5
A2
A4
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Voice from Customers in MV Distribution
network
-“ you have to take in account the smart
grid trend ”
-“ expected life
duration of switchgear is increasing ”
-“ maintenance-free is far more important than SF6-free”
-“ we want a switchgear with Easy Operation for our
maintenance and operation teams”
-“ cost effective and compact Circuit Breakers are
needed for small primary substations or loop management ”
-“ no problems with GIS switchgear, because reliable
in
harsh environment (humidity, temperature, dust, poor
installation, partial discharges) ”
-“ I’ll never compromise about end-users
Schneider Electric - Energy – Premset – Weili Ding - Sep 2013
safety ”
5
New generation of switchgear - Premset
Premset
Schneider Electric - Energy – Premset – Weili Ding - Sep 2013
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Key Benefits
Simple - Safe - Smart
Safety
Schneider Electric - Premset Openline
Reliability
Efficiency
Flexibility
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Premset
Totally Shielded Solid Insulation System design for optimized safety and extended
equipment life
1
2
1- Low Voltage cabinet
3
2- Cable test
4
3- Top connections
7
8
4 - Core unit
5
5 - Bottom connections
6
6 - Bottom compartment
7 - Sensors (CTs and VTs)
8 - Gas exhaust duct
Schneider Electric - Energy – Premset – Weili Ding - Sep 2013
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Safety & Reliability - SSIS
Totally Shielded Solid Insulation System design for optimized safety and extended
equipment life
All surfaces at earth potential
●
●
●
●
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Schneider Electric - Energy – Premset – Weili Ding - Sep 2013
No dielectric ageing
Long product life expectancy
Reduced internal arc risk
Accidentally touchable
Insensitive to harsh environment
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Safety & Reliability - SSIS
All surfaces at earth potential
Solid insulation
covered by a
conductive layer
Patented flat connectics
Single bus bar (630A)
Schneider Electric - Energy – Premset – Weili Ding - Sep 2013
Busbars with shielded solid insulation
Well-known
Technologies
(epoxy, EPDM*)
Cable connection
*EPDM: Ethylene Propylene Diene Monomer rubber
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Safety & Reliability - SSIS
Earth shield continuity ensured by Patented Flat Interface
Main advantages compared with traditional conical interface
● Simplicity of installation
● Compactness
● Flexibility
Flat interface cross-section
Schneider Electric - Energy – Premset – Weili Ding - Sep 2013
Electrical field calculation .
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Safety & Reliability – 3 Position Scheme
Disconnection in vacuum & earthing switch in controlled air
● redundancy of isolation
-
Breaking and
disconnection
vacuum bottles for breaking
and disconnection
Earthing
switch
controlled air
for downstream
earthing switch in sealed-for-life screened tank.
Operation
of
earthing
switch
Operation
of main
switch
Schneider Electric - Energy – Premset – Weili Ding - Sep 2013
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Safety & Reliability - Interlocking
3-in-1 integrated architecture: easiest and safest operation, with built-in interlocking
“The most intuitive operations for breaking, disconnection and
earthing”
Schneider Electric - Energy – Premset – Weili Ding - Sep 2013
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Safety & Reliability – 3 Position Scheme
Disconnection in vacuum & earthing switch in controlled air
Schneider Electric - Energy – Premset – Weili Ding - Sep 2013
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Safety – Cable Testing Device
Cable testing and diagnosis: dedicated device, for easy access and total safety
● Cable testing without accessing
cable box or dismantling cable
connections
● Test device connection from the
front of the switchboard, while cables
remain earthed
● Failsafe interlocks with earthed star
point
Easy cabling
All cables
connections are
aligned in front
at a height of 700 mm
Schneider Electric - Energy – Premset – Weili Ding - Sep 2013
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Safety – Cable Testing Device
Cable testing and diagnosis: dedicated device, for easy access and total safety
Schneider Electric - Energy – Premset – Weili Ding - Sep 2013
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Safety & Reliablity – Live Cable Interlocking
Live cable interlock - Electrical lock-out of earthing switch when live cables
● Earthing switch lock-out
function
- Prevent the earthing switch to be
closed on earth when cables are still
alive
- Positively blocked in case of auxiliary
power loss
- Override unlocking by key
- Remote indication of locked position
Schneider Electric - Energy – Premset – Weili Ding - Sep 2013
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Efficiency
Flexible approach & Embedded intelligence in switchgear
Modules fully integrated in
functional unit
Today: set of products to connect
- Protections: Sepam, Micom
- Measurement metering: Power Logic
- Local fault monitoring & Remote control: Easergy
- Including sensors, switchgear interface,
power supply, communication, HMI
- Pre- engineered, factory-tested, cost
effective
- Easy integration based on :
. Field bus communication between modules
. Pre-cabling inside cubicle
Easergy
- Gradual solution : from local control up to
complex feeder automation
Sepam & Micom
Power Logic
Schneider Electric - Energy – Premset – Weili Ding - Sep 2013
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Efficiency
“Integrated intelligence” in MV switchgear
RTU/ATS
Power Supply
R200
SC100
Switch Controller
PS100
PM200
Flair
Fault
detection
Energy Quality
Monitoring
Modbus
VIP
Self powered
Protection
- IEC61850 access to Substation
automation through gateway (G3200…)
Schneider Electric - Energy – Premset – Weili Ding - Sep 2013
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Efficiency
Low cost Supervision & Control system
● Switchboard information is stored in a Web page
● Need just a PC, Tablet, Smart Phone with a standard Web browser
Example of web access
Schneider Electric - Energy – Premset – Weili Ding - Sep 2013
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Flexibility
A new level for MV switchgear Modularity
► assembly of functional bricks
LV cabinet
Cable test
Top connection
Core unit
LBS
LBS
CB
Metering
CB
CB
Bottom
connections
Bottom
compartment
Schneider Electric - Energy – Premset – Weili Ding - Sep 2013
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Technical Description &
Applications
Schneider Electric - Premset Openline
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Main Characteristics
15 kV
Short time withstand
25 kA x 3s*, 21 kA x 3s, 20 kA x4s
Rated busbar current
630 A, 1250 A (under development)
Rated BIL withstand voltage
95 / 110 kV
Rated PF withstand voltage
42 / 48 kV 1mn
Cable earthing switch
25 kA, M0, E2
Degree of protection
IP3X (indoor), IP54 (outdoor)
Dimensions W x H x D (mm)
375 x 1600 x 900 (indoor)
Internal arc
INDOOR
* : 25kA x 3s
on request
OUTDOOR
Range
Rated voltage
 Standard design is virtually arc free
 Optional : type tested 21KA 1s A-FLR / 25KA 0.5s A-FLR
: top or bottom exhaust
 Comply with new IEC standard 62271-200 ALFR
Schneider Electric - Energy – Premset – Weili Ding - Sep 2013
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Four basic functional units
630A disconnecting
load break switch
1000 operations
100 or 200A disconnecting
circuit breaker
O-15 sec- CO
2000 operations
630A disconnecting
circuit breaker
O-15 sec-CO.
2000 operations
630A disconnecting
circuit breaker
O-0,3s-CO-15s-CO
10,000 operations
► I06 T
► D01-02 N
► D06 N
► D06 H
Network management
Transformer protection
Feeder protection
Schneider Electric - Energy – Premset – Weili Ding - Sep 2013
Feeder protection
Auto-reclose
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Typical applications
Building
2.252.25m
m
Industry
3.75 m
Energy
3.75 m
IEC standard 62271-200 ALFR
Schneider Electric - Energy – Premset – Weili Ding - Sep 2013
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MV Innovation in 20 years – Premset !
Schneider Electric - Energy – Premset – Weili Ding - Sep 2013
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Thank you for your attention…
Amith Ganasram
Cell :
076 411 2263
Tel:
011 254 6638
Email:
[email protected]