It is all about Smart! - Het Koninklijk Instituut Van …. dr. ir. J.F.G. Cobben It is all about...
Transcript of It is all about Smart! - Het Koninklijk Instituut Van …. dr. ir. J.F.G. Cobben It is all about...
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Power electronic event 2015
’s Hertogenbosch 23 juni
Prof. dr. ir. J.F.G. Cobben
It is all about Smart!
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• Click to edit Master text styles
– Second level
The future electricity network!
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From consumers to producers
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Not only generation but also additional load
PAGINA 3 23-6-2015
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Even more important in a “smart grid”
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PQ and “smart grids”
HV
MV
LV
G
G
L
L
L
G
Smart grids:
More information needed
More control needed
Propagation PQ
“Predict and prevent”
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MS-LiveLab Alliander
Intelligence
Interconnect
Instrumentation
From
network and
hardware to
data en
data-
applications
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Sensors placed in the network
• Part of the MV-network
• Parts of LV-networks
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Substation MV/LV
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Substation MV/LV
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Substation MV/LV
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Functionalities Live lab
Optimalisation
Network
performance
Investments
Losses
Fault prediction
Power Quality trend
………..
………..
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Measurement in LV-network
PAGINA 12 23-6-2015
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It is all about to make the system “smart”
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From “blind and happy”
How to measure power of distorted waveforms precisely?
The next generation photovoltaic inverter
Flexible LV grid interface for controllable PV production and EV charging
Electric vehicle charging by PV
A DC socket outlet in your house?
Towards a DC distribution system – opportunities and challenges
Without electricity the world stops turning
The importancy of optimal quality of voltage and current
To “state estimation and alert”
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DC – An interesting topic
PAGINA 14 23-6-2015
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Power Quality problems
PAGINA 15 23-6-2015
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Problems related to PV-systems
• Overloading of transformer and overvoltages!
2 kW
Protection
?
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Voltage dip
PAGINA 17 23-6-2015
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Research related to voltage dips
PAGINA 18 23-6-2015
N0
1 2
N3
4 56
7 8 9
N10
N15
0
10Primary protective
device
Secondary protective device
3
Grid
.
.
.
DG
...
150kV
10kV
9 other feeders
CB1
CB2
CB3
Local feeder
Neighboring feeders
11 12 13 14 15
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Research related to voltage dips
PAGINA 19 23-6-2015
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Inrushcurrents (contactors/circuit breakers)
PAGINA 20 23-6-2015
The capacitor has the capacity to create problems in the network
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Harmonics and monitoring
PAGINA 21 23-6-2015
15th harmonic voltage problem has to be solved!
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Cable cross section
• With high harmonic distortion
B-16A
3 3
Without harmonics: 16 mm2
With 3rd harmonic: 25 mm2
With all harmonics: 35 mm2
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PF and the need for compensation
PAGINA 23 23-6-2015
0 0,85 1
PF=0,6 DPF=0,9
222 DQPS
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How to define the content of the glass?
PAGINA 24 23-6-2015
Reactive power
Active power
Harmonic distortion makes it
difficult to define the quality of the beer!
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Examples of non-compatibility
PV
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Knowledge and education: Key to smart!
PAGINA 26 23-6-2015