Actual use of DSE in a real French MV network · Future distribution networks • New constraints...
Transcript of Actual use of DSE in a real French MV network · Future distribution networks • New constraints...
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Actual use of DSE in a real French
MV network
Leticia De Alvaro
EDF R&D
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Plan
• New automation functions and DSE needs
• Development of algorithms
• Implementation challenges
• Field experiment
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Future distribution networks
• New constraints appear on MV and LV networks
– DG connected to distribution networks � impact on
voltage profiles, losses, power quality
– Assets ageing
– New types of loads
• New DMS functionalities to be developed
– To optimize future network reinforcement/development
– Voltage control function, Network Reconfiguration Functions, Power
Flows and losses Optimization, etc…
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Future distribution networks
• New constraints appear on MV and LV networks
– DG connected to distribution networks � impact on
voltage profiles, losses, power quality
– Assets ageing
– New types of loads
• New DMS functionalities to be developed
– To optimize future network reinforcement/development
– Voltage control function, Network Reconfiguration Functions,
Power Flows and losses Optimization, etc…
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More observability is required
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MV
Load LV LV LV LV
LV LV LV LV
LV LV
LVHV
HVHV/MVSubst.
RTU SCADA
Control center
HV/MV substation
Distribution network
Sensors
Sensors
Observability requirements
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Vmax
Vmin
Voltage
Length
V
Vprod
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Observability requirements
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Vmax
Vmin
Voltage
Length
V
Vprod
MV
Load LV LV LV LV
LV LV LV LV
LV LV
LVHV
HVHV/MVSubst.
RTU SCADA
Control center
HV/MV substation
Distribution network
Sensors
Sensors
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Observability requirements
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Vmax
Vmin
Voltage
Length
V
Vprod
MV
Load LV LV LV LV
LV LV LV LV
LV LV
LVHV
HVHV/MVSubst.
DSENetwork data base
RTU SCADA
Control center
HV/MV substation
Distribution network
Sensors
Sensors
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Development of DSE algorithms
• Research topics:
– DSE algorithms
– Scalability of DSE algorithms
– Impact of sensors on DSE results
• Research Projects:
– Internal EDF R&D
– European HiPerDNO project
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Development of DSE algorithms
• DSE issues:
– Instrumentation issues
– Algorithmic issues
• Long radial feeders with heterogeneous lines and cables
• Large number of nodes
• Active and reactive power cannot be decoupled
• DSE algorithms:
– Constrained and un-constrained WLS DSE using Newton optimization,
– Specific robust DSE based on M-estimator,
– DSE based on trust region optimization,
– Meta-heuristic approach,
– …
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• Criteria choice
– Robustness• Detect, identification and elimination of errors regarding
measurements, network model or parameters
– Accuracy of results
– Calculation time
– Impact of number and type of sensors on DSE results
• Voltage sensors, power sensors, …
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Development of DSE algorithms
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• Research phase with
Matlab tool
– Run different case
studies
– Fine tuning of the
algorithm + sensors
requirements
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Development of DSE algorithms
Choice of DSE to be implemented
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Off-line experiment
• Carried out in 2011
• No real time calculation
• 2 MV feeders
– Sensors installed in several
MV/LV substations
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Sub1
Sub2
Sub 3 Sub 4 Rules related to placement of
sensors validated
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Implementation challenges
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Algorithms
Communications
Sensors
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Implementation challenges
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•Accurate MV sensors�Voltages �Power
•Compact design•Security requirements•Equipment's availability
Algorithms
Communications
Sensors
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•Accurate MV sensors�Voltages �Power
•Compact design•Security requirements•Equipment's availability
Implementation challenges
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•Measurement synchronization•Permanent connecting link
Algorithms
Communications
Sensors
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•Measurement synchronization•Permanent connecting link
Implementation challenges
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•Accurate MV sensors�Voltages �Power
•Size requirements•Physical requirements
•Matlab � C++•Integration in real time control tool•Real time issues integration
•Unavailable measurements,•Network configuration•…
Algorithms
Communications
Sensors
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Field experiment
• demonstrator
– Study and test new solutions
and products designed to
adapt the electric grid to wind
production
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Field experiment
• Voltage regulation function
– 1 HV/MV transformer 20 MW
– 6 feeders
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DG
Voltage control
functionDSE
Network
data base
SCADA
HV/MV substation
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To summarize
• DSE algorithms to enable new voltage control
function
• Different implementation challenges
addressed
• Field experimentation ongoing
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THANK YOU FOR YOUR ATTENTION
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