On Thursday 19 November 2015, the British Embassy in Paris hosted a second trilateral workshop with French, German and British delegates from the research, government and business sectors to discuss the importance of energy storage.

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2. Nice Grid innovation
Islanding experience on LV Grid
Paris, November 19th, 2015
Gilles ROCCHIA - Marketing Strategy Director

3. Islanding experience on LV Grid – Nice Grid innovation
Gilles ROCCHIA – 11/19/2015 – Trilateral Energy Storage Workshop
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An independent
manufacturer providing
expert solutions
for the power
performance of LV
electrical networks
SOCOMEC Group
The benefit of a specialist
production sites
9
subsidiaries
21
years
93
product references
18,000
customers
30,000
employees
3,100
M€ turnover
427

4. Islanding experience on LV Grid – Nice Grid innovation
Gilles ROCCHIA – 11/19/2015 – Trilateral Energy Storage Workshop
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SOCOMEC Group
4 fields of expertise
Power Control & Safety
Managing power and protecting individuals and property
Solar Power
Guaranteeing the safety and durability of photovoltaic (PV) facilities
Energy Efficiency
Improving building and facility energy efficiency
Critical Power
Ensuring the availability of high-quality power for critical applications

5. Islanding experience on LV Grid – Nice Grid innovation
Gilles ROCCHIA – 11/19/2015 – Trilateral Energy Storage Workshop
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Introduction to storage assets
Four grid storage assets have been installed

6. Islanding experience on LV Grid – Nice Grid innovation
Gilles ROCCHIA – 11/19/2015 – Trilateral Energy Storage Workshop
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LV On grid storage assets
The two low voltage grid storage assets
 33 kW / 106 kWh
 Converter: SOCOMEC SUNSYS PCS² TR33
 Battery: SAFT
 Located on the LV feeder at 400 m
of the secondary substation
PRIMARY
SUBSTATION
HV/MV
SECONDARY
SUBSTATION
MV/LV
400 m
106kWh
33kW

7. Islanding experience on LV Grid – Nice Grid innovation
Gilles ROCCHIA – 11/19/2015 – Trilateral Energy Storage Workshop
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Introduction to storage assets
The islanding Storage System
 250 kW / 600 kWh
 Converter: SOCOMEC SUNSYS PCS² TR66
 Battery: SAFT
 Connected to a dedicated LV
feeder
PRIMARY
SUBSTATION
HV/MV
SECONDARY
SUBSTATION
MV/LV
102 m
600kWh
250kW
140kWc
90kWc
16 m
102 m
15 m 200kWc
174kVA
76 m66kVA
124 m57kVA
45 m111kVA
PV
430kWc

8. Islanding experience on LV Grid – Nice Grid innovation
Gilles ROCCHIA – 11/19/2015 – Trilateral Energy Storage Workshop
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The islanding
A new innovation experienced
1
ON grid mode
Manage consumption and production peaks
thanks to energy storage system.
2
OFF grid mode
Thanks to PCS, LV grid works alone with
local PV production and the batteries energy.

9. Islanding experience on LV Grid – Nice Grid innovation
Gilles ROCCHIA – 11/19/2015 – Trilateral Energy Storage Workshop
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The islanding
SUNSYS PCS2 from 33 to 100 kW
CUSTOMER BENEFITS :
 Energy shifting, peak shaving and grid stabilizing (active
and reactive power) functions with the same product
 Modular, flexible and scalable
 Highly efficient
 Compatible with different battery technologies (e.g.
lead-acid, lithium-ion) and ultra-capacitor energy
storage systems
 98% efficiency
 3 level technology
 Dynamic Power Control feature
PRODUCT APPLICATIONS
Ultra high
efficiency &
smart energy
management
From 33kW to 100kW
Low Voltage / Medium Voltage

10. Islanding experience on LV Grid – Nice Grid innovation
Gilles ROCCHIA – 11/19/2015 – Trilateral Energy Storage Workshop
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The islanding
Solution description
4 x SUNSYS PCS²
250 kW
 4 SUNSYS PCS² TR66 IM
 250 kW / 600 kWh
 Installed in the secondary substation MV/LV
 With Smart Islanding Controller
90 kWc PV + Load
140 kWc PV
200 kWc PV
Load (57kVA)
Load (66kVA)
Load (111 kVA)
Not used
600 kWh

11. Islanding experience on LV Grid – Nice Grid innovation
Gilles ROCCHIA – 11/19/2015 – Trilateral Energy Storage Workshop
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-20
-
20
40
60
Grid Active Power (kW)
The Scheduled Islanding (06/10/2015)
First Feed Backs
402
404
406
408
410
P/P Voltage (U12-VAC)
49.94
49.96
49.98
50.00
50.02
Frequency (Hz)
Grid disconnection P=0
5 hours of islanding
F & φ Synchronization
U Synchronization
Microgrid connection
Islanding Period
KPI#7 – Voltage deviation during islanding –
Relative standard deviation (%)
≤ 10% (according to EN 50160)
Transition TO Islanding Transition From
V1 V2 V3 V1 V2 V3 V1 V2 V3
1,70% 2,17% 1,69% 0,68% 0,63% 0,81% 0,62% 0,99% 0,56%
KPI#8 – Frequency deviation during islanding-
Relative standard deviation (%)
≤ 1% (according to EN 50160)
Transition TO Islanding Transition From
0,04% 0,10% 0,14%
KPI#9 - Total harmonic distortion –
THD(%)
≤ 8%
Transition TO Islanding Transition From
V1 V2 V3 V1 V2 V3 V1 V2 V3
2,99 2,47 2,59 2,33 1,62 1,46 2,15 1,84 1,75

12. Islanding experience on LV Grid – Nice Grid innovation
Gilles ROCCHIA – 11/19/2015 – Trilateral Energy Storage Workshop
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-200
-100
0
100
Micro-Grid Active Power (kW)
The Unforeseen Islanding (07/10/2015)
First Feed Backs
KPI#7 – Voltage deviation during islanding –
Relative standard deviation (%)
≤ 10% (according to EN 50160)
Transition TO Islanding Transition From
V1 V2 V3 V1 V2 V3 V1 V2 V3
N/A N/A N/A 0,15% 0,17% 0,10% 0,65% 0,73% 0,67%
KPI#8 – Frequency deviation during islanding-
Relative standard deviation (%)
≤ 1% (according to EN 50160)
Transition TO Islanding Transition From
N/A 0,01% 0,18%
KPI#9 - Total harmonic distortion –
THD(%)
≤ 8%
Transition TO Islanding Transition From
V1 V2 V3 V1 V2 V3 V1 V2 V3
N/A N/A N/A 2,20 1,27 1,45 2,47 1,62 1,82
0
200
400
600
P/P Voltage (VAC)
0.00
20.00
40.00
60.00
Frequency (Hz)
Grid failure
PV inverters reconnections
Black Start sequence (<15sec)
Grid Failure Timer
2 hours of islanding

13. Islanding experience on LV Grid – Nice Grid innovation
Gilles ROCCHIA – 11/19/2015 – Trilateral Energy Storage Workshop
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Conclusion
Islanding has just been tested
successfully in CARROS
Islanding duration reached 5
hours on October 6th
Islanding is good solution to
restore power supply after a grid
outage and to sustain supply
during several hours

14. Islanding experience on LV Grid – Nice Grid innovation
Gilles ROCCHIA – 11/19/2015 – Trilateral Energy Storage Workshop
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