DANVEST ENERGYA/S - UAF homeuaf.edu/files/acep/Thursday_850_DanVest-Presentation-WD-Workshop... · DANVEST ENERGYA/S Hybrid Wind Diesel Systems ... Danvest has made a standard diesel

A wholly owned subsidiary of Windesal Ltd

DANVEST ENERGY A/S

Hybrid Wind Diesel Systems

High Wind Penetration

Water Desalination

District Heating

March 2011

A wholly owned subsidiary of Windesal Ltd2

AGENDA

Introduction to Danvest Energy

Wind Diesel with High Wind Penetration

Working principles for Wind Diesel Systems

Capacities of the Wind Diesel Systems

Historical References

Project Developments


DANVEST ENERGY A/S

Danvest has developed its Wind Diesel Technology since 1993 which is

protected by a worldwide patent.

Danvest has always had a close relationship with Vestas Wind Systems

who owned the Danvest IPR from 2003-2010.

Danvest is a wholly owned subsidiary of Australian Windesal Limited

and we have offices in Denmark and Australia.

The Providers of infrastructure finance and our financial advisors

Macquarie Capital became shareholders of our Company in 2010.

Windesal is busy implementing a plan for developing up to 16 Wind

Diesel Desalination plants in South Australia.


DESIGN PHILOSOPHY

Wind Diesel for power supply for off-grid regional and remote areas.

When there is no wind there must be a diesel engine to secure

continuous power supply.

Danvest has made a standard diesel engine able to backup wind turbines

for 0-100%.

The basis system design is that average wind production shall cover

average power consumption.

Diesel fuel can be replaced with bio fuels.


HIGH WIND PENETRATION

50-85% annual wind penetration / fuel savings.

High power quality 50/60 Hz +/- 0.1-0.3 Hz.

Simple and proven technology.

Pre fabricated and containerized concept.

World wide service via internet with link to local service organisations.


CORE FEATURES

Low Load Unit enabling the diesel engine to operate efficiently with

optimal operational conditions at any load.

A disconnection and stopping of the diesel engine when the wind

energy covers the full consumer demand.

A dynamic and reliable control system with an additional

dump-load stabilising any fluctuations in energy output and demand.

An ability to control large capacities of wind energy with a

minimum of diesel backup only when the wind is insufficient.


WORKING PRINCIPLE

Concept is based on standard diesel generators and standard

wind turbines.

Existing power systems can be converted into a Danvest Wind

Diesel system.

The diesel engine (DE) is pre-heated and pre-pressured (low load

operation) for instant backup.

The DE is automatically started and stopped to secure positive

power balance up to around 110% consumer load ± 5%

The rotating DE alternator remains connected to the busbar,

acting as a flywheel stabilising the fluctuations from wind and

consumer and securing the power factor above 0.8.


SYSTEM DIAGRAM


PLANT CONFIGURATION

Complete modular system for turnkey solutions.

High degree of flexibility.

Adjustable demands after locations.

Pre-fabricated and containerised system.

Easy transport and erection.

Extendable for future demands.

Existing power stations can be integrated in the Wind Diesel

system.

Service and tool workshop for operation and maintenance.


CONTROLLING 1

Grid frequency

At wind penetration below 100% the DE governor is controlling,

parallel with the dynamic dump load control (DDC) overrated.

At wind penetration above 100% the DDC is controlling, parallel

with the DE governor “parked” in the main frequency area.

At stopped DE, the alternator remains connected to the busbar,

controlling frequency via the DDC system.

Grid voltage

Automatic Voltage Regulator (AVR) of the synchronous generator

maintains the voltage.

Power factor

The synchronous generator supplies reactive power for grid and

for energising the induction generators of the wind turbines.


CONTROLLING 2

Power quality

50/60 Hz +/- 0.1-0.3 Hz according to EC Norms.

Voltage 400 / 480 / 690 from -6 to +8%.

Optimal diesel operation (LowLoad Unit)

Pre pressuring to secure positive charge air pressure.

Pre heating the cylinder heads for optimal combustion.

Plant efficiency

Due to average wind power shall cover average power consumption

over the years the operation will for long periods 6-7,000 hours per

years be close to a balance between wind production and

consumption where auxiliary power and fuel consumption is

minimum obtaining a plant efficiency up to 95%.











HIGH PERFORMANCE

To obtain high performance the following is necessary:

Optimal design.

Local net conditions (load patterns).

Utilization of exiting power station.

High plant efficiency.

Surplus energy is absorbed for utilization.

Energy saving / desalination / district heating.

Intelligent controlling.

Standby capacity (securing continuous service).

SCADA system with remote monitoring and adjustment for

service and maintenance by the local service organisation –

the service organisation of the diesel engine manufacturer.


PERFORMACE GUARANTEE

The Danvest systems are guaranteed as follows:

Component guarantee according to sub suppliers.

Performance guarantee.

System guarantee.

Link to remote control system allows responses within the

guaranteed time period by the local service organisation –

the guarantee period to be followed by a service contract.


COHERENCE BETWEEN

WIND AND GEN.SET ENERGY


SAFETY

A Wind Diesel system must be based on proven technology -

securing reliability of operation and service.

If problems with the Wind Diesel system, the system is cut out

and the standard diesel generator system continues the operation

alone.

During standard service contracts with remote monitoring for

both the Wind Turbine and the Wind Diesel systems, optimal

operating conditions are continuously ensured.


SIMPLICITY AND ROBUSTNESS

The Wind Diesel system can be operated by the existing staff of a

diesel generator based power station after a short introduction

and training.

Only main components with world wide service net and country

based authorisations involved.


PLANT CAPACITIES

For the containerised and fixable concept the plant capacity can

be accommodated simply after local demands.

Power supply 0.1-10 MW.

100-1,500 kW per Unit.

Freshwater Supply 500-30,000 m3/day.

100-2,000 m3/day per unit.

Conversion and Customized solutions.

Stabilization


PRICES BEFORE AND AFTER PAYBACK


HISTORICAL REFERENCES

Estonia: Wind Diesel Power Station in 2007-2008: Wind turbine 2x75 kW,

Generator set 1x120 kW.

Ireland: Wind Desalination Station in 2001: Wind turbine 3x225 kW,

Desalination 50 m3/day.

Malaysian Navy: Wind Diesel Station in 1995: Wind Turbine 150 kW, Generator

Set 160 kW.

Test Station Denmark: Wind Diesel Desalination Power Station executed and

tested during 1994 to 2005.


PLANTS IN PRODUCTION

Asia: 400 kW Danvest Hybrid Wind-Diesel Power Plant with a Battery

Saving Unit with connection of 1 x 500 kW V39 Vestas wind turbine with an

annual wind penetration / fuel saving 50-60%.


EXAMPELS OF PROJCT DEVELOPMENT

POWER SUPPLY

Asia: Conversion of existing diesel system into a 5 MW Wind-Diesel System

with connection of 3 x 2 MW wind turbines with an annual Wind penetration /

fuel saving: 70-85%.

Caribbean: 500 kW Danvest Stabilization Unit for the existing 24 MW power

station for connecting 2 x 2.3 MW wind turbines with an annual wind penetration

/ fuel saving: 10%.

East Africa: 2 MW Hybrid Wind-Diesel Power Plant with connection of 3 x 850

kW wind turbines for a Work Camp with an annual Wind penetration / fuel

saving: 70-85%.

Russia: 290 kW Hybrid Wind-Diesel Power Plant with connection of 2 x 225 kW

wind turbines with an annual wind penetration / fuel saving: 65-75%.


EXAMPLES OF PROJCT DEVELOPMENT

WATER AND POWER SUPPLY

West Africa: 10 MW Hybrid Wind-Diesel Power Plant with a 3,000 m3/day

Seawater Desalination Unit with connection of 14 x 850 kW wind turbines with

an annual wind penetration / fuel saving: 54%.

Mauritius: 1.6 MW Hybrid Wind-Diesel Power Plant with a 3,000 m3/day

Seawater Desalination Unit with connection of 6 x 275 kW wind turbines with an

annual wind penetration / fuel saving: 60-70%.

South Australia: 260 kW Hybrid Wind-Diesel Power Plant with a 1,500 m3/day

Groundwater Desalination Unit with connection of 1 x 225 kW wind turbine with

an annual wind penetration / fuel saving: 45-50%.

South Australia: 1.2 MW Hybrid Wind-Diesel Power Plant with a 4,000 m3/day

Seawater Desalination Unit with connection of 1 x 2,300 kW wind turbine with an

annual wind penetration / fuel saving: 55-65%.


Model of Wind Diesel Desalination

Plant for South Australia Salisbury


QUESTIONS?

Søren Qvist Vestesen

Technical Director

Thomas Qvist Vestesen

Managing Director

Danvest Energy A/S

www.danvest.com

http://www.danvest.com/

Documents

DANVEST ENERGYA/S - UAF homeuaf.edu/files/acep/Thursday_850_DanVest-Presentation-WD-Workshop... · DANVEST ENERGYA/S Hybrid Wind Diesel Systems ... Danvest has made a standard diesel