Document Level: TECHNICAL SPECIFICATION
20MW / 25MVA
11kV POWER PLANT
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T. Warren
R. Caramanno
R. Benini
Operation:
In standby to the mains or in Island mode
Application:
In standby to the mains or in Island mode
Power:
20MW / 25MVA Prime power, 11kV, 3 phase, 50Hz, 0.8 p.f.,
1500rpm @ ISO 3046 conditions with a 10% overload for one hour
every 12 of the normal load.
DGS-MT-2500
Code product:
Client Specification
Ref.ASCOT’s Offer
ASCOT INDUSTRIAL Srl
Zona Industriale Terza Strada
93012 Gela (CL) – Italy
Last Modified Date 30/08/2013
TURNKEY PRICE LIST
www.ascotinternational.com
Tel. +39 0933 901192
Fax +39 0933 915614
sales@ascotinternational.com
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OVERVIEW
Choosing the Ascot Group today means trusting an organisation with a 27 years experience in the
international sphere, with a brand name which is a by word for quality and reliability.
Since 1986, Ascot is manufacturing in Italy Diesel Generators and power plants specifically designed
to work in different climatic condition for the International market.
Ascot Group is considered as one of the most important players in the energy sector due to an
active population of 34.254 generators, spread out globally in 42 countries.
Choosing the Ascot Group means not only acquiring a quality product, designed to function in
different parts of the world, but also a company which is capable of meeting all customer’s needs
serviced by its partners’ network and Service Centers all encouraging technological innovation.
The markets historically recognizes Ascot as a leader in the gen set and power plant sector thanks to
its innovative products and technologies for generators and for the family of Hybrid solutions.
This is the true know-how of Ascot, made of competence, flexibility, and understanding all its
customer’s needs for which designs and manufacturers products order by order with a price structure,
that is in proportion to the tailor made solutions offered.
Key Benefits of Ascot’s solutions
-
Low emission and Long Life reliability thanks to European / best quality engines and
components manufactured as per Ascot specifications;
-
Harsh environmental conditions capabilities thanks to the Ascot worldwide proven experience
in designing & manufacturing of products to operate in any ambient conditions;
-
Design of tailor made solutions having low CAPEX and low OPEX.
-
Minimal Installation Costs thanks to all in one package.
-
Flexiblity & interchangeability units, thanks to the integrated features that operates in single
or dual operation mode as standard configuration without any additional change.
-
All Ascot products are ready to be remotely controlled, on request, with web based
management system, LAN system or GSM system or simply by free contacts for NOC.
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INDEX
1. INTRODUCTION ............................................................................................................................................. 4 1.1. Benefits of MTU engine ....................................................................................................................... 4 1.2. Benefits of European Brand alternator ............................................................................................ 4 1.3. Benefits of gen set auxiliaries ............................................................................................................ 4 2. SCOPE OF SUPPLY ........................................................................................................................................ 4 3. REFERENCE ENVIRONMENTAL CONDITIONS .......................................................................................... 5 4. STANDARDS.................................................................................................................................................... 5 5. DIESEL GENERATING SET ............................................................................................................................. 5 5.1. DIESEL ENGINE ...................................................................................................................................... 5 5.2. ALTERNATOR ......................................................................................................................................... 6 5.3. BASE FRAME .......................................................................................................................................... 6 5.4. COUPLING ENGINE ALTERNATOR ................................................................................................... 6 5.5. BATTERIES ............................................................................................................................................... 6 5.6. ANTI VIBRATION MOUNT................................................................................................................... 6 5.7. OPTIONAL DAILY FUEL TANK ............................................................................................................ 6 5.8. PAINTING ............................................................................................................................................... 6 5.9. STEP UP TRANSFORMER – EACH GEN SET ..................................................................................... 7 6. GEN MV SYNCHRONISING AND CONTROL PANEL ............................................................................. 7 7. POWER PLANT AUXILIARY SERVICES TRANSFORMER ....................................................................... 11 8. OPTIONAL SOUND AND WEATHERPROOF 40’ CONTAINER EACH GEN SET ............................. 11 9. OPTIONAL WEATHERPROOF 20’ CONTAINER FOR MEDIUM VOLTAGE PANELS....................... 13 10. TYPICAL DRY WEIGHTS AND DIMENSIONS .................................................................................... 13 11. TESTING ................................................................................................................................................... 13 12. EXCLUSIONS ........................................................................................................................................... 13 Document Level: TECHNICAL SPECIFICATION
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1. INTRODUCTION
We, ASCOT Industrial Srl who have over 27 years experience in the power sector, and most
noticeably Medium Voltage gen sets to Middle Eastern countries for the last 12 years, so therefore,
based on our experience, we propose Ascot Generating POWER PLANT with N°10 gen set DGSMT-2500 with MTU water cooled engine and European alternator.
1.1.
Benefits of MTU engine
•
Constructed to the highest European standards
•
Low capital expenditure based on your requirements
•
Suitable for operation in harsh conditions with tropical radiator
1.2.
Benefits of European Brand alternator
•
Constructed to the highest European standards
•
Low capital expenditure based on your requirements
1.3.
Benefits of gen set auxiliaries
•
2500kVA 0.4/11kV step up transformer for each gen set to raise the LV outgoing voltage to
MV (for external installation)
•
LV & MV synchronising and control panels/switchgear which have been specifically designed
for this application for best cost and operation characteristics
•
Auxiliary services transformer for supplying power to the low voltage loads
•
Optional 40’ sound and weatherproof high cube container to reduce the noise level of each
gen set to 90dB(A) @ 1m and for protection from the elements
•
Optional 20’ container for medium voltage switchgear for protection from the elements
•
Optional 2000L free standing fuel tank for connection to your bulk fuel tank for greater
autonomy
2. SCOPE OF SUPPLY
20MW / 25MVA POWER PLANT WITH N°10 GENERATING SET MODEL DGS-MT-2500
2000kW / 2500kVA Prime power each, 11kV, 3 phase, 50Hz, 0.8 p.f., 1500rpm @ ISO 3046
conditions with a 10% overload for one hour every 12 of the normal load.
Each gen set supplied with:
- MTU 20V 4000 G23 water cooled engine
- European brand alternator
- 0.4 / 11kV step up transformer
Scope of supply power plant:
- MV control and switchgear panels
- Auxiliary services transformer
Optional:
- Gen Set 40’ sound and weatherproof high cube container 90dB(A) @ 1m
- MV switchgear 40’ weatherproof container
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- 2000L free standing fuel tank
3. REFERENCE ENVIRONMENTAL CONDITIONS
The power plant / generating sets can operate at the following ambient conditions without any
deration.
Altitude:
1000 mt a.s.l.
Temperature: 40°C
Humidity:
60%
4. STANDARDS
Designed and manufactured in accordance with
- Low Voltage Directives: 2006/95 CEE and subsequent changes
- Machine Directive 2006/42 CEE and subsequent changes:.
- CEI EN 61439 low voltage switchgear and controlgear assemblies.
- CEI EN 61082: Preparation of used electro-technical documents .
- EN 60073 CEI 16-3: Principal fundamentals of safety for the interface between man and
machine, marking and identification;
- EN 60204-1 CEI 44-5:Electrical industrial machines equipment.
- CEI 11-20:Electrical energy production systems and continuous groups connected to the mains of
category I & II.
- ISO 8528 parts 1÷9:Reciprocating internal combustion driven engines coupled to alternating
current generating sets.
Designed and manufactured by ASCOT which is certified to UNI EN ISO 9001:2008.
5. DIESEL GENERATING SET
5.1.
DIESEL ENGINE
Manufacturer
Type
Continuous power @ ISO 3046 conditions
Aspiration
Electrical starter motor
Governor
Cooling system
Speed
Radiator type
MTU
20V 4000 G23
2200kWm
Turbocharged and aftercooled
24Vdc
Electronic
Water
1500rpm
Heavy duty electro-radiator suitably sized to operate in
tropical climates complete with fan guard protection
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5.2.
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ALTERNATOR
Realisation
Manufacturer
Type
Brushless, self exciting, self regulated
ASCOT approved European brand
TBD
Bearings
Standard continuous power
Voltage
Single
2500kVA at 1500rpm
400V at 1500rpm
Voltage regulator limit
Frequency
± 1,5%
50Hz
Power factor
0,8
Insulation class
H
Temperature rise
H
Grade of protection
RFI suppression
Standards
5.3.
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IP23
VDE 0875K
CEI 2-3, IEC 34-1, EN 60034-1, VDE 0530, BS49995000
BASE FRAME
The generator is provided with a heavy duty base frame fabricated from steel sections; the base
frame accurately aligns and supports the engine, the radiator and the alternator; the base frame is
provided with lifting points.
5.4.
COUPLING ENGINE ALTERNATOR
The alternator casing is mounted to the engine by a solid flywheel housing and the rotor is connected
to the engine flywheel through a flexible element to minimize torsion vibration within operating
range.
5.5.
BATTERIES
One set of heavy duty lead acid batteries are provided with heavy starter cable and connections to
the engine starter motor terminals for three consecutive starting attempts.
5.6.
ANTI VIBRATION MOUNT
A set of anti vibration mounts fitted between the set and the base frame are supplied to minimize
the vibration of the units. Anti-vibration mounts between engine and baseframe & alternator and
baseframe are provided.
5.7.
OPTIONAL DAILY FUEL TANK
A free standing fuel tank of 2000L is offered as an optional item and includes manual fuel refilling
spout for connection to your bulk fuel tank.
5.8.
PAINTING
The complete assembly is finished with high quality painting for tropical climates.
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11kV POWER PLANT
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STEP UP TRANSFORMER – EACH GEN SET
The outgoing voltage from each gen set alternator is stepped up by a transformer with the following
characteristics:
•
Power 2500kVA
•
Cooling ONAN
•
50Hz
•
Primary voltage: 0,4kV
•
Secondary voltage: 11kV
•
Primary connection: Delta
•
Secondary connection: Star + N
•
CEI Group: Dyn11
•
LV / MV porcelain isolators
•
5 position voltage selector at no load
•
Oil tank
•
Oil level gauge
•
Bucholz relay
•
Thermometer with 2 alarm contacts
•
Thermometer pocket
•
Lifting lugs
•
N°4 bidirectional wheels
•
Oil drain valve
6. GEN MV SYNCHRONISING AND CONTROL PANEL
The gen set is supplied with a medium voltage synchronising and control panel for installation in your
power room with the following technical characteristics.
A) METAL ENCLOSED SWITCHGEAR 11kV 12,5 kA
Supply of a metal enclosed switchgear our type "Normoclad C” with vacuum C.B or SF6. and single
bar system, composed of following units :
•
N°1 Busbar measuring unit
•
N°1 Protection unit for aux services transformer
•
N°10 Gen set incoming unit
•
N°2 Outgoing to load
•
N°1 Common Low Voltage panel for control and protection of Low Voltage auxiliaries
General features
The metal-enclosed switchboards for indoor installation are made of standardized units employed in
the transformer cabins, to control and protect lines, transformers, motors and capacitors, and usually
in the M.V. electrical distribution.
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Type Tests
Switchboards passed positively the type tests in conformity with CEI 17-6 (IEC 298) standards at
SINAL appointed labs and are used to pass the acceptance tests in conformity with standards CEI
17-6 (art.7).
Standard References
In compliance with standards :
International IEC 60694-60298
Italian CEI EN 60694-60298
Ordinary Service Conditions
° In compliance with art.2 of the standard IEC 60694
° min. ambient temperature (-5°C)
° max. Ambient temperature (+40°C)
° max.average humidity 95%
° height under 1.000 m.
° EM transient in secondary units under peak 1.6kV
NOTE : for different service conditions, address to Ascot International
Quality System
The Ascot International quality system is in compliance with ISO 9001:2000 standard and is certified
CSQ/IQNET (international Quality System Assessment and Certification Network).
Environment
Switchboards are manufactured following processes, treatments and using materials and components
causing no pollution damage to environment.
Manufacturing Characteristics
The switchboards have the following characteristics :
dimension
Cubicles of 500, 700, 750 and 900 mm. Max.
The switchboard can be placed against the wall, since the front side is easily accessible.
max. service continuity and reliability
The internal metallic segregations, which separate the cubicles, allow the personnel to replace fuses,
circuit breakers, CT etc, even when the main busbars are on voltage.
easy installation and connection
The units are assembled in the factory and tested before shipping, therefore they need only to be
fixed to the floor on site and then, coupled together and connected to the external circuits.
versatility and flexibility
Any technical requirement of extension on already installed switchboards can be met easily with any
electrical layout to be carried out.
easy operation and maintenance
The front side switchboard inspection windows, the isolation and withdrawing of circuit-breakers and
disconnector sallow a quick check-up and a long lasting maintenance.
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surface treatments
The cubicles are carried out by zinc-plated steel sheets UNI EN 10142 and sheets UNI EN 10111,
then they are degreased and passivated. The external part is powder painted in RAL 7035 grey
with orange peel bright effect. On request, other colours are at disposal.
personnel safety
Guaranteed by the following measures :
° earthed enclosure and earthed equipments’ and components’ bulk
° continuity of protection circuits
° IP3X protection for enclosure and IP2X for the cubicles diaphragms against contacts with part on
voltage or in movement.
° use of insulating safe materials, with creepage distances suitable for much polluted environment
installation
The switchboards are suitable for the incoming medium voltage (M.V.) cables and auxiliary (L.V.)
cables from the bottom.
On request, the rotobloc switchboard may be suited to receive the cables from the top.
The supporting plane should be perfectly smoothed and ready in compliance ASCOT drawings,
which show the necessary holes, useful for the M.V./L.V. cables lines and cubicles fixing.
Electrical Characteristics
-
rated voltage
24 kV
-
operating voltage
11kV
-
frequency
50 Hz
-
impulse withstand voltage
125 kV
-
rated current of main bus bars
630 A
-
short circuit current x 1"
12,5 kA
-
peak withstand current
40 kA
-
auxiliary voltage for signalling
-
indoor installation
-
copper bus bar air insulated
-
closet bottom
-
flame retardant wiring CEI 20-20 e 20-22
-
earthing bar
The Switchgear will be composed of units each equipped as below mentioned :
Each power plant will be equipped as follow.
N°1 BUSBAR MEASURING UNIT
•
•
Equipped with :
nr. 3 HCR fuses for PT protection
nr. 3 Cast resin Potential transformers with :
Ratio 13.200:√3 / 100:√3 – 100:√3 – 100:3 V
Burdens 30VA in cl. 0,5 – 30VA cl. 3P
.... V..
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11kV POWER PLANT
•
•
•
•
nr.
nr.
nr.
nr.
1
1
1
1
Inside lighting plant
Heaters with thermostat
Terminal blocks
Ancillary equipments and accessories
N°1 PROTECTION UNIT
•
•
•
•
•
•
•
•
•
nr.
nr.
nr.
nr.
nr.
nr.
nr.
nr.
nr.
Equipped with :
1 nr. 3 HCR fuses for PT protection
1 Fixed part for the C.B. above mentioned
1 Earthing switch complete with accessories
1 Capacitive dividers with signalling lamps
1 Kits Signalling Lamp
1 Inside lighting plant
1 Heaters with thermostat
1 Terminal blocks
1 Ancillary equipments and accessories
N°10 GEN SET INCOMING UNIT
•
Equipped with :
nr. 1 SF6 or Vacuum Circuit Breaker ABB SACE or similar
- rated current
400 A
- short time current for 1”
12,5
- Motorized
- Electrical operated
•
•
•
•
•
nr.
nr.
nr.
nr.
nr.
1
1
1
1
3
- Removable execution
Off Load Switch SRI Type
Fixed part for the C.B. above mentioned
Earthing switch complete with accessories
Capacitive dividers with signalling lamps
Cast resin current transformers with :
Ratio 200/5-5A
Burden 10VA in cl. 0,5 – 10 cl. 5P10
• nr. 2 Cast resin Potential transformers with :
Ratio 13.200/100 / 100:/3 – 100:/3 – 100:3 V
•
•
•
•
•
•
•
Burdens 30VA in cl. 0,5 – 30VA cl. 3P
nr. 1 Synchronizer control Panel
nr. 1 Selector Switch for CB command
nr. 1 Kits Signalling Lamp
nr. 1 Inside lighting plant
nr. 1 Heaters with thermostat
nr. 1 Terminal blocks
nr. 1 Ancillary equipments and accessories
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N°2 OUTGOING TO LOAD
•
Equipped with :
nr. 1 SF6 or Vacuum Circuit Breaker ABB SACE or similar
- rated current
1250 A
- short time current for 1”
12,5 kA
- Electrical operated
•
•
•
•
•
- Removable execution
nr. 1 Off Load Switch SRI Type
nr. 1 Fixed part for the C.B. above mentioned
nr. 1 Earthing switch complete with accessories
nr. 1 Capacitive dividers with signalling lamps
nr. 3 Cast resin current transformers with :
Ratio 400/5-5A
•
•
•
•
•
•
•
Burden 10VA in cl. 0,5 – 10 cl. 5P10
nr. 1 Protection relay (50-51-50N-51N)
nr. 1 Selector Switch for CB command
nr. 1 Kits Signalling Lamp
nr. 1 Inside lighting plant
nr. 1 Heaters with thermostat
nr. 1 Terminal blocks
nr. 1 Ancillary equipments and accessories
N°1 Common Low Voltage Control panel for protection of low voltage auxiliaries
Circuit breaker for the supply of the auxiliary services to the 9 gen sets.
7. POWER PLANT AUXILIARY SERVICES TRANSFORMER
The auxiliary services are supplied by a transformer with the following characteristics.
§
Cooling type oil
§
Porcelain insulators for LV & MV
§
Thermometric well
§
Lifting lugs
§
Steerable wheels
§
Earthing terminal
8. OPTIONAL SOUND AND WEATHERPROOF 40’ CONTAINER EACH GEN SET
Description modifications container:
We buy a 40 ft high cube container first trip, and apply structural modifications (reinforcement of
the base, and the uprights) as dictated by “RINA”, in order to make the container suitable for the
containment of the generator, so it can be transported.
Detailed construction of the container:
-
Air intake: through grid panel specifically dimensioned, positioned laterally on the container.
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-
Air expulsion: through grid panel specifically dimensioned, positioned laterally or on the roof
at the container. The output section must be higher (20%) in order to have a small depression
within container
-
Double door: for entry to the container, with acoustic characteristics suitable to achieve the
noise threshold expected. They can also have the grid panels for the air inlet.
-
Single door: for entry to the containers side control panel, with acoustic characteristics suitable
to achieve the noise threshold expected. Only in this door, will be installed the porthole and
the panic handle.
-
Door with porthole: to see inside the container, with acoustic characteristics suitable to achieve
of noise threshold expected.
All outside doors will be equipped with:
-
system pressure lock with padlock;
-
fixing to container with galvanized steel hinges;
-
gaskets capable of ensuring perfect water tightness and noise.
-
Dividing panel radiator: to divide the generator from the area of exhaust air.
-
Container walls: with acoustic characteristics suitable, to achieve of noise threshold expected.
-
Flooring: made with non-slip sheet metal.
-
Technical Connections including: positioning close to the electrical panel, should leave an
opening for the passage of electric cables between the inside and the outside of the container,
with the following dimensions: mm.
-
Lifting points: N.4 lifting points, in the bottom of the container, that is through the corner
blocks.
-
Drain: sleeve ¾ “, on the flooring.
-
Inlet and outlet diesel: sleeve ½ “, position…..
-
Painting: typically the purchase color, RAL 5010 blue / gray RAL 7035, RAL 7035 Grey
interior In the case where the color of the container has to be different it will incur an a extra
cost.
-
Emergency stop push button: appropriately positioned.
-
Electrical system: internal lighting with lamp and switch with 230 V power outlet.
Documents:
-
Drawing CAD 2D “As Built”.
Certificate of compliance issued by “RINA” Approval Authority.
Photometric Tests to a distance of 1 - 3 - 7 m, in correspondence with the middle points of the
diagonals of the container.
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9. OPTIONAL WEATHERPROOF 20’ CONTAINER FOR MEDIUM VOLTAGE PANELS
Protection from the elements for the medium voltage panels is provided by a weatherproof ISO 20
feet container with construction similar to the gen set container but excluding; radiator section,
radiator air outlet and inlet section, etc.
10. TYPICAL DRY WEIGHTS AND DIMENSIONS
Typical dry weights and dimensions are:
Dimensions:
Length 12192mm
Width 2438mm
Height 2896mm
Weight
28000kg.
11. TESTING
Full scale load and performance tests are carried out in accordance with the procedures of the Ascot
quality control manual.
12. EXCLUSIONS
It is understood that anything not specified in our offer is intended as out of our scope of supply,
namely:
•
•
•
•
•
Civil works
Installation and commissioning
On site testing
Neutral Earthing Resistor
Power and connection cables