Siemens your Partner for Power Solutions
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3
Power Supply Systems
Distribution
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PTD M 3 / Kruska 02.2006
1
2
Perspectives of T&D Network Developments
Generation
Transmission HV
Today
Today&&Tomorrow:
Tomorrow:
More
Moredispersed
dispersedGeneration
Generationin
inthe
theDistribution
DistributionSystem
System
Distribution MV
Distribution
Power Generation
Bio Mass
Power Generation
PTD
PTD M
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3
Power Supply Systems
Distribution
& Turn-key Solutions
Solar Power Generation
PTD M 3 / Kruska 02.2006
Wind Power Generation
Solar Powered Solutions for Distribution Systems
•
Solar
Solar Power
Power
•
Micro
Micro Networks
Networks
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PTD M
M3
3
Power Supply Systems
Distribution
& Turn-key Solutions
PTD M 3 / Kruska 02.2006
Grid
Grid Supply
Supply
•
3
Alternative Power Supply for Rural Electrification
integrated in the secondary distribution system for
private consumers, as standalone systems or even
with grid connection. Energy storage with batteries or
back up power with diesel generator sets.
Rural Electrification in Urban Areas
power supply for consumers in very remote areas.
Solar powered systems with low energy demand
without grid connection. Standalone systems with
batteries for energy storage.
Grid connected Solar Systems
large solar systems inclusive network connection as
an alternative power generation. Solar powered
systems with out batteries for basic load supply or
peak load energy demand.
Key Questions about Solar Powered Solutions
■ What is the market size of distributed generation for Solar Systems?
Market Development
700
Micro-Networks
Anal Growth MW
600
Grid Supply
30 %
500
400
Ö Micro Networks for
developing countries
300
70 %
200
100
0
1998
1999
2000
2001
2002
Ö Grid Supply as alternative
power generation
2003
■ What about integration of mini-grids (solar systems) in national networks?
Ö Micro Networks are standalone solutions with max. 2000 Wp – integration not applicable.
Ö Grid Supply (large systems) are connected to national grids – if not , connection can be
arranged easily with standard components.
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PTD M
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Power Supply Systems
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PTD M 3 / Kruska 02.2006
■ What are the benefits or disadvantages of solar solutions (grid connection)?
Ö Micro Networks provides power for consumers in very remote areas where grid supply is
very costly; disadvantage: reconstruction in case of future national network supply.
Ö Grid Supplies (large systems) to be considered as alternative power generation or
for peak load coverage only.
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5
Expected Cost Development and Output Factors
Regional Output-Factors
Development of Tariff costs for Electric Energy
Solar power costs versus prices for
peek power costs and constant power costs
1
Solar Power
EUR / kWh
0,8
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PTD M
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0,6
Constant Power
1800 h / a *):
0,30 € / kWh
0,4
0,2
Power Supply Systems
Distribution
& Turn-key Solutions
PTD M 3 / Kruska 02.2006
Peak Power
900 h / a *):
0,60 € / kWh
0
Reference:
RWE Schott Solar GmbH
(EW Magazine 25 - 29.11.2004)
1990
2000
2010
2020
2030
2040
*) Solar radiation per year
Standalone Solar Power Systems – Micro Networks
6
Technical Data
=
Charger
Circuit Breaker
(Overvoltage
Protection)
3 x 230 V
~
50 Hz or 60 Hz
DC/AC
Converter
Led-Acid
Battery
► Solar panels
• Life time 25 years (maintenance free)
Photovoltaic
► Charger / Converter
• Life time 15 - 20 years (maintenance free)
► Battery System / Lead-Acid (low maintenance)
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Power Supply Systems
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PTD M 3 / Kruska 02.2006
Module peak power
(55 or 75 or 110 Wp)
• Capacity 5 days >autarky<
Life time till 10 years at Ø ϑ = 30°C
• Capacity 2 days >autarky<
Life time max. 5 years at Ø ϑ = 30°C
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Micro Networks – Areas of Application
Water tank and pump
Photovoltaic generator
Clean Drinking Water
Technical Data:
Solar module 85 Wp / pc, 16 module system
Low maintenance battery 185 Ah
PTD
PTD M
M3
3
Power Supply Systems
Distribution
& Turn-key Solutions
PTD M 3 / Kruska 02.2006
DC / AC converter 2,4 kW
Stainless steel pump, max. production 5m³/ h
Well depth max. 97 m
Water Filter System
UV-Light Sterilization
Sand filter system with automatic cleaning
UV-Light Sterilization 40 W, capacity max. 2,2m³/ h
Micro Networks – Areas of Application
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PTD M
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Power Supply Systems
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PTD M 3 / Kruska 02.2006
Photovoltaic generator
Battery-Box
Lighting centre
8
9
Hybrid Power System – Solar / Diesel Generator
Solar
Solar
Power
Power
SINVERT
SINVERT Solar
Solar
Modul
Modul Concept
Concept
ET 200
DC
Profibus DP
S7-300
Hybrid Solution:
• Diesel Gen-Set
300 kVA
• UPS
60 kVA
• Solar
50 kW
• Energy-Management / Control
=
=
3~
PLC
=
3~
=
3~
AC
300
kVA
G
NS-Netz
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PTD M
M3
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Power Supply Systems
Distribution
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PTD M 3 / Kruska 02.2006
3~
Sub-Station
Sub-Station with
with
Peak-Load
Peak-Load
Generation
Generation
MV - Network
Hybrid Power System – Solar / Diesel Generator
Solar- Hybrid Plant
Africa
Š Size of Solar Array 360m²
Š Solar Power installed 51,6 kWp
Š Diesel-Genets 136 kVA
Š UPS provides
4 days of autonomy
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Power Supply Systems
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Capacity 300 kVA
PTD M 3 / Kruska 02.2006
Capacity 165 kWh
LV Switchboard
10
Grid connected Solar Power Plants
0,4 kV
Bavaria Solarpark
Germany
Š 57,600 Solar panels
Š 10 Megawatts
system capacity
Solar
Plant
20 kV
Š 62 acres
total surface area
Y
Y
≈
=
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PTD M
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Power Supply Systems
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PTD M 3 / Kruska 02.2006
Solar Plant
Public
Network
11
Energy Demand of an Office Building (Example)
Grid connected Solar Systems for office buildings
as an alternative power supply. Solar modules for
basic load supply or peak load energy demand.
Energy Demand Office Building
LOW
HIGH
LOW
250
Energy demand
200
Solar power
Sub-Station
Sub-Station
Reverse supply
150
Y
< 630
kVA
Y
100
OPTION
00:00
22:00
20:00
18:00
16:00
14:00
12:00
10:00
08:00
06:00
04:00
02:00
24 h Load Demand
Solar Power
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Battery
Solar Roof System Holland
Š Solar Power installed 500 kWp
Š 3,400 Solar panels
PTD M 3 / Kruska 02.2006
LV-System
LV-System
Š Commissioning Dec. 2003
=
0
00:00
50
≈
Electric Energy Demand kWh
Tariff costs for electric energy
300
12
Private
Private Power
Power
Generation
Generation
World Bank Energy Week 2006
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PTD M
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3
Power Supply Systems
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& Turn-key Solutions
PTD M 3 / Kruska 02.2006
Open Forum: Questions?
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