Truck Trolley FINAL 2013
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Transcript of Truck Trolley FINAL 2013
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Siemens AG 2013. All rights reserved.
BAUMA 2013
Trolley Truck
April, 15-21th in Munich, Germany
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Siemens AG 2013. All rights reserved.
Industry Sector Page 2 April 2013
Trolley Assist for Trucks
Electric haul trucks fitted with pantographs can pull
power from an overhead trolley line; the engine idles
when truck on trolley
The trucks run on diesel power in the pit and around
the crusher
Typical Application:
Uphill haul segments (also flat segments)
Established travel routes
Difference between diesel and electricity cost
Trolley assist is an alternate power source
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Siemens AG 2013. All rights reserved.
Industry Sector Page 3 April 2013
Trolley History
1881 Werner von Siemens presents
the worlds first electric tram in
Lichterfelde
1882 Electric pit locomotives developed
for use in mines
Electric underground trolley train approximately 1900
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Siemens AG 2013. All rights reserved.
Industry Sector Page 4 April 2013
Trolley Assist Scheme
ALTERNATOR
DIESEL 3
RECTIFIER
///
TROLLEY BOX
(+)
(-) TROLLEY LINE
3
INVERTER
(x2)
M(x2)
~///
INVERTER CABINET
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Siemens AG 2013. All rights reserved.
Industry Sector Page 5 April 2013
Trolley Assist Benefits
Trolley assist is a win-win situation
If the drive system can provide more HP than the diesel engine, speed on grade increases proportional to HP.
Faster uphill haul shorter cycle time higher productivity (20% rule)
Without trolley, more than 80% of the fuel is consumed on grade
Electricity costs less than Diesel (50% fuel cost savings - $50 / 20 min)
Engine overhaul intervals doubled or tripled
Trolley assist reduces environmental impact
Noise, Emissions, Carbon footprint
Trolley assist was developed during the energy crisis of the 1980s
to minimize diesel fuel consumption and reduce energy costs.
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Siemens AG 2013. All rights reserved.
Industry Sector Page 6 April 2013
Trolley System References
Siemens Trolley Systems:
Mine Route
Length
Substation
Rating
Number of
Substations Converted Trucks Commissioning Year
Palabora, South Africa 11,0 km 5,0 MVA 7 80 1981
Rssing, Namibia 10,0 km 3,0 MVA 7 30 1986
Gecamines, Congo 3,5 km 2,4 MVA 4 22 1986
*Barrick Gold, USA 5,5 km 6,5 MVA 7 11 1994
Lumwana Copper, Zambia 4,0 km 10,0 MVA 5 32 2009
Kinshanchi, Zambia 2,0 km 10,0 MVA 2 12 2011 (Nov)
Trolley Truck with Siemens Drives:
Mine Technology Trucks Commissioning Year
Grootegeluk Coal, South Africa GTO 4 2001
Sishen Iron, South Africa IGBT 29 2010
Lumwana Copper, Zambia GTO 32 2009
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Siemens AG 2013. All rights reserved.
Industry Sector Page 7 April 2013
Trolley Assist Challenges
Unfamiliarity
Mines do not know enough about trolley assist
Rumors of high maintenance/repair costs, high cost for moves, long payback periods,
high CAPEX for truck and wayside equipment.
Answers
Attractive payback periods of 2 - 4 years
Maintenance is required but balances with reduced engine maintenance
Trolley lines can be moved, extended, shortened; substations are movable
Mine Plan for Trolley Assist
Ideally trolley should be included in early mine planning
Simulation with life of mine trolley assist scenarios
Experts and consultants available for best planning
AndrsResaltado
AndrsResaltado
AndrsResaltado
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Siemens AG 2013. All rights reserved.
Industry Sector Page 8 April 2013
When does trolley assist make sense?
Trolley segments can stay in operation for significant periods of time > 1 year
The road surface can be well maintained
Adequate electrical power capacity is available
Electric energy costs less than Diesel fuel
20% of the truck cycle is on an uphill grade
Environmental Compliance: Special noise, emission requirements
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Siemens AG 2013. All rights reserved.
Industry Sector Page 9 April 2013
One Stop Shop Trolley System Components
Overhead Catenary System
Traction Substation
Trolley Box (on the truck)
Pantograph (on the truck)
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Siemens AG 2013. All rights reserved.
Industry Sector Page 10 April 2013
Overhead Catenary System
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Siemens AG 2013. All rights reserved.
Industry Sector Page 11 April 2013
Poles and Wires
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Siemens AG 2013. All rights reserved.
Industry Sector Page 12 April 2013
Wayside Equipment
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Siemens AG 2013. All rights reserved.
Industry Sector Page 13 April 2013
Substation
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Siemens AG 2013. All rights reserved.
Industry Sector Page 14 April 2013
Substation Control Panel
Monitoring
Diagnostics
Controlling
Trending
Remote Operation
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Siemens AG 2013. All rights reserved.
Industry Sector Page 15 April 2013
Screen Shot
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Siemens AG 2013. All rights reserved.
Industry Sector Page 16 April 2013
Rectifier
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Siemens AG 2013. All rights reserved.
Industry Sector Page 17 April 2013
Protection System
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Siemens AG 2013. All rights reserved.
Industry Sector Page 18 April 2013
Ehouse
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Siemens AG 2013. All rights reserved.
Industry Sector Page 19 April 2013
Aerial View
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Siemens AG 2013. All rights reserved.
Industry Sector Page 20 April 2013
Pantograph
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Siemens AG 2013. All rights reserved.
Industry Sector Page 21 April 2013
Relationship between Power and Speed
Truck speed increases proportional to additional power available in excess of the existing diesel engine power
Higher speed on ramp means shorter cycle time and higher productivity
On-grade speed (v) is limited by the available power
Power Power
Tractive Effort GVW * 9.8 * Grade(%) v = =
Increased Productivity
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Siemens AG 2013. All rights reserved.
Industry Sector Page 22 April 2013
Contributors to Mine Pollution
Neither of these environmental burdens need to be that high!
Fuel consumption and air pollution: closely correlated
CO
NoX
NMHC
Noise pollution of a ultra class mining truck: > 110 Decibels
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Siemens AG 2013. All rights reserved.
Industry Sector Page 23 April 2013
Carbon Emissions
Economic policies for curbing greenhouse gas emissions
Carbon Tax:
Carbon taxations seeks to reduce carbon emissions by imposing a tax
Emissions Trading:
Emissions trading schemes establishes targets for specific levels of emissions through the trade in
allowance
EPA Tier 4 program: All off road vehicles with engines over 750 HP to meet Tier 4 emissions requirements
Year Category CO NHMC NOx PM
2011 Engines > 900 kW 3.5 (2.6) 0.40 (0.30) 3.5 (2.6) 0.10 (0.075)
2015 All Engines 3.5 (2.6) 0.19 (0.14) 3.5 (2.6) 0.04 (0.03)
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Siemens AG 2013. All rights reserved.
Industry Sector Page 24 April 2013
Field Results:
Fuel Consumption on Grade
Top Speed Full load fuel rate Idle Speed Idle fuel rate
Engine speed fully loaded: 1900 rpm
Engine speed when idling: 750 rpm
The engine idle speed is settable as per mine request
Fuel consumption fully loaded engine: 450 liters/hr
Fuel consumption idle engine: 40 liters/hr
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Siemens AG 2013. All rights reserved.
Thank you for your attention!