Thomas Qvist Vestesen - Danvest Energy - Danvest low-load diesel for solar-Diesel and Wind-Diesel

2016

© Danvest Energy A/S

All rights reserved.

A Game Changer for Solar-Diesel and Wind-Diesel Hybrid Solutions


All rights reserved.2016

Danvest Energy A/S

Danvest Energy A/S, headquartered in Copenhagen, Denmark, is an innovative diesel technology

company and a world leader in hybrid wind-diesel and solar-diesel power.

Since its inception in 1994, Danvest has developed and sold the “Danvest Power Box®”, a system with

unique low-load operation and fast responds capabilities that allow diesel generators to work efficiently

with intermittent renewable energy sources, maximizing fuel savings and minimizing CO2 emissions.

Applications for the Danvest Power Box® include:

stand-alone hybrid power plants for mines, islands and other remote locations

emergency and backup power for off-shore and on-shore wind farms

test and service units of wind farm commissioning

In addition to the manufacturing of the Danvest Power Box®, Danvest’s capabilities include the design and

installation of hybrid projects that are optimized for each application.



Danvest Power Box®

The Danvest Power Box® is a 20 or 40 foot container housing a conventional diesel generator fitted with

Danvest’s unique low-load system. Features and benefits of the Danvest Power Box® include:

components and sub-systems widely used in the industry

a simple, robust and reliable design with a design life up to 20 years

SCADA/VPN monitoring

scalability depending on the customer’s energy needs

containerized design that facilitates transport and installation

yearly fuel savings and CO2 reduction between 30% and 70% when used with wind and/or

solar generation

investment payback periods for the entire installation including the wind and/or solar plant

between 3 and 6 years

The Danvest Power Box® can improve the economics and environmental impact of an existing or newly

constructed diesel-based energy generation facility by providing an effective means of supplementing

the facility with wind and/or solar generation.



Danvest Power Box®



Unique Low-Load Operation

The Danvest system minimizes diesel fuel consumption by maximizing the amount of usable renewable

power through its unique low-load capability:

Danvest system allows a conventional diesel generator to “low-load”, i.e. to operate with

minimum fuel consumption between 30% and zero load when the customer’s energy needs are

satisfied by nearby wind or solar generation

when renewable energy generation exceeds the customer’s needs, the diesel generator

operates in reverse power and fuel consumption nears zero

when operating in full reverse power the diesel engine can be clutched out from the alternator

and stopped completely while the alternator remain spinning on the busbar

the system provides a fast and stable spinning reserve at every operation mode. At engine stop

operation, the diesel engine rapidly restart and clutch in when needed to carry load again

Danvest dump-load controller assist the engine operation and secures a dynamic load balance

between solar and/or wind energy fluctuations and variations in energy demand when the

diesel generator operates in reverse power or is clutched out completely



Danvest Power Box®



Operation Modes

Danvest system can operate in low load mode and in reverse power with low emission levels, with the fuel consumption reduced to a minimum

Danvest system has no or very low fuel consumption when solar (and or wind) covers the power consumption with 100% or more

For a 648kWe Cummins genset based Danvest system



Danvest Responds Capabilities

The Danvest system has a fast and stable responds from both low load and reverse power. It ensures a

stable and fast spinning reserve in normal load all the way down in low load and reverse power

operation. Step load tests of a 648kWe genset based Danvest solution show:

frequency variations are within +/- 0,5Hz for all load steps tests in reverse power and low load

with load steps of 10% of the genset capacity per 1 or 2 sec. (65kWe/1 or 2 sec.) which is

approx. 1,2 times the worst case step load level criterion known from the solar industry

when applying larger load steps of 20% of the gensecapacity per 1 or 2 sec. (130kWe/1 or 2

sec.) in reverse power and low load, the frequency variations are maximum t from 49,2Hz to

50,55Hz

responds of the Danvest modified genset in the Danvest system does not significantly vary

whether the genset is in reverse power or in low load or normal load operation

if the engine is clutched out and stopped, it takes 7 sec. from start-up the .engine to the genset

is ready to carry load. During engine stop with dumpload controlling frequency is stable

Danvest system is able to handle and survive large sudden load variations (big load step of

approx. 60% of the genset capacity was tested from full reverse power operation)



Development and Confirmation

1992 Concept for the Danvest Power Box® is developed by Søren Qvist Vestesen, whose family

has been involved in the Danish diesel industry from the early 1900s.

1997 First commercial wind-diesel project is installed in Malaysia, consisting of a 160kW Danvest generator power plant and a 150kW wind turbine.

2006 The third test report from RISØ (the Danish Laboratory for the wind industry) is issued based for a project consisting of two Danvest generators and a 600kW wind turbine.

2013 Siemens Wind Power satisfactorily completes testing of the Danvest Power Box® with its 3.6MW wind turbines.

2014 Caterpillar and Cummins, two of the world’s largest suppliers of diesel generators, accept the

Danvest low-load diesel technology and agree to provide worldwide guarantees on engines fitted with the Danvest system.

2015 Completed testing with PON-CAT for solar-diesel.



Market Segment: Solar-Diesel



Solar-Diesel System Diagram



Solar-Diesel Configuration



Solar-Diesel Benefits & Economics

high solar penetration up to 100% during solar hours

30-40% yearly fuel savings

30-40% yearly CO2 emissions reduction

fuel haulage risk reduction



Solar-Diesel – Island Project

39.5% yearly fuel savings with Danvest Low Load Diesel approach



Solar-Diesel – Mining Project

29.3% yearly fuel savings with Danvest Low Load Diesel approach



2MW Solar-Diesel Power Supply AUD

Danvest: Power demand

Containarized Hybrid Power Plant 2.000 kW/hour

Danvest Control & Power System 17.520.000 kW/year

2x1000kW Danvest Low-Load gensets

2x1000kW standard genset Solar share

SubTotal 3.235.000 6.132.000 kW/year

Reactor Unit 100.000

Solar controller 50.000 Solar Penetration

Service kit - 1 year 40.000 35% Yearly

International and local transport 144.000

Local civil: Foundation for containers, fuel system connection, cables etc. 414.080 Fuel consumption

Installation, integration, commissioning 120.000 3.074.760 Liter/year

Total Danvest 4.103.080

Solar Contractor: Fuel saving

Solar System 1.655.640 Liter/year

2500kW PV panel system

Invetor system Fuel price

Service kit - 1 year 0,70 AUD/liter

International transport

Subtotal REC price

80 AUD/MWh

Local works Solar System

Local transport

Local civil works incl. foundations Excluding:

Power & communication cables Any Australian import tax

Installation, commissioning Fuel Storage system at site

Subtotal Substation to consumer

Project Management

Total 5.250.000

Total Capex 9.353.080

Solar-Diesel

Fuel 2.152.332 Danvest Energy A/S

Service & maintanance solar system 65.625 Date 20-03-2016

Service & maintanance Gensets 443.782

REC return -490.560

Danvest monitoring 24.000

Contigency 35.000

Operating expenses SYSTEM 2.230.179

Per kWh 0,13

Diesel Only

Fuel 3.311.280


Contigency 35.000

Operating expenses DIESEL ONLY 3.868.376

Per kWh 0,22

Net Saving -1.638.197

Simple payback of initial investment -5,7 years



Market Segment: Wind-Diesel



Wind-Diesel System Diagram



Wind-Diesel Configuraion



Wind-Diesel Benefits & Economics

high wind penetration up 100% during wind hours

50-60% yearly fuel savings

50-60% yearly CO2 emissions reduction

fuel haulage risk reduction



Wind-Diesel – Mining & Island Projects

50-60% yearly fuel savings with Danvest Low-Load Diesel approach



2MW Wind-Diesel Power Supply (secondhand wind turbines) AUD

Danvest: Power demand

Containarized Hybrid Power Plant 2.000 kW/hour

Danvest Control & Power System 17.520.000 kW/year

2x1000kW Danvest Low-Load gensets

2x1000kW standard genset Wind share

SubTotal 3.384.000 9.636.000 kW/year

Reactor Unit 100.000

Service kit - 1 year 40.000 Wind Penetration

International and local transport 144.000 55% Yearly

Local civil: Foundation for containers, fuel system connection, cables etc. 433.152

Installation, integration, commissioning 120.000 Fuel consumption

Total Danvest 4.221.152 2.128.680 Liter/year

Wind Contractor:Wind System Fuel saving

3400kW secondhand wind system 2.601.720 Liter/year

Service kit - 1 year

International transport Fuel price

Subtotal 0,70 AUD/liter

Local works Wind System REC price

Local transport 80 AUD/MWh

Local civil works incl. foundations

Power & communication cables

Installation, commissioning Excluding:

Subtotal Any Australian import tax

Fuel Storage system at site

Project Management Substation to consumer

Total 4.080.000


Wind-Diesel

Fuel 1.490.076

Service & maintanance wind system 287.153

Service & maintanance Gensets 391.572 Danvest Energy A/S

REC return -770.880 Date 20-03-2016

Danvest monitoring 24.000

Contigency 35.000


Per kWh 0,08

Diesel Only

Fuel 3.311.280


Contigency 35.000


Per kWh 0,22

Net Saving -2.411.455




20MW Wind-Diesel Power Supply

Items AUD Power demand

Wind Turbine System 20.000 kW/hour

26MW wind turbines farm 175.200.000 kW/year

Civil work including cabling and roads

Subtotal 65.000.000 Wind share

87.600.000 kW/year

Danvest Hybrid Wind-Diesel Power Plant

14MW Danvest low-load gensets Wind Penetration

16MW standard gensets 50% Yearly

Reactor Unit

Civil works Fuel consumption

Subtotal 34.000.000 45.552.000 Liter/year

Spare Parts Wind Turbine 1.195.652 Fuel saving

Spare Parts Danvest System 680.000 22.776.000 Liter/year

Subtotal 1.875.652

Fuel price

Project Development 0,70 AUD/liter

Wind Messurements 200.000

Legal Fees 500.000 REC

Technical Due Diligence 150.000 80 AUD/MWh

Tax and Account Due Diligence 50.000

Environmental Studies 100.000

Project Development Contigency 100.000 Excluding:

Subtotal 1.100.000 Any import tax

Substation

Total 101.975.652 Fuel storage system

Project EPC Fee 5% 5.098.783

Continegency 3.5% 3.569.148


Wind-Diesel

Fuel 15.943.200 Danvest Energy A/S

Operation expense wind system 1.630.435 Date 20-03-2016

Service & maintanance Gensets 3.915.720

REC return -7.008.000

Contigency 250.000


Per kWh 0,08

Diesel Only

Fuel 31.886.400

Service & maintanance Gensets 5.220.960

Contigency 250.000


Per kWh 0,21

Net Saving per year -22.626.005


Danvest is partner with

Simens Australia and

Eurus Energy Holdings

since 2014 for large scale

Wind-Diesel in Australia



Adding Battery to Low-Load Diesel

Danvest already obtain high fuel saving results without battery

no need for battery for grid support

no need for battery for engine stop

Battery (or similar storage) can improve fuel saving results

need for less battery and solar and/or wind capacity

only charge battery with surplus solar and/or wind

only need for shifting surplus solar and or wind

only one circle per day

Add battery any time / add battery when makes sense

Thomas Qvist Vestesen - Danvest Energy - Danvest low-load diesel for solar-Diesel and Wind-Diesel

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