Gas Natural Fenosa’s BESS

Project

John Chamberlain

Technology Project Manager

Madrid

February 16th 2016

Index

1. Who we are

2. The Project and it’s Objectives

3. Motivation in Grid Connected Storage

4. Initial Results

5. Main lessons Learnt

6. Next Steps

7. Initial Conclusions

2

Who we are

1

Gas Natural Fenosa

Who we are

• Gas Natural Fenosa is the largest gas and electricity company

in Spain and in Latin America, leading the natural gas sales

market in the Iberian Peninsula, and is the biggest distributor

of natural gas in Latin America. Currently the company is

present in over 30 countries and has around 23 million

customers worldwide.

• Benchmark operator in the Atlantic and Mediterranean

basins of LNG and natural gas supplies

1 – Figures 31/12 /2014

4

The Project and it’s Objectives

2

The Project and It’s Objectives

Principal Project Facts

• An ambitious 5 year testing programme to evaluate a storage

solution in up to 5 different locations across Spain

• Compact Storage solution based upon Toshiba’s SCiBTM

Lithium-Titanate Technology

• Two independent battery systems with a combined storage

capacity of 776 kWh and 500kW power capacity.

• Start-Up achieved in Autumn 2015

• Project Partners6

The Project and It’s Objectives

BESS System Definition

• The BESS system is integrated into two 6 meters long standard

width containers for easy transportation.

The main characteristics of each

unit are:

• The combined system has a capacity of 500 kVAs / 776 kWh.

Importantly each container can work independently or together

Auxiliary systems

(control, communications) Power ElectronicsBatteries

Max. Power 250 KVAs

Stored energy 388 kWh

Power voltage 290V

Auxiliary voltage 240V

7

The Project and It’s Objectives

First Demonstration site: Alcalá substation

• Representative site that hosted the PRICE smart-grid

demonstration project.

MV/LV Grid

AutomationEnergy Management

Distributed

GenerationDemand

Management

8

Site access pathStorage System

The Project and It’s Objectives

First Demonstration site: Alcalá substation

• Medium voltage line 720 starting at the

Alcala substation has been selected:

• The chosen line 720 has shown power

demand variations adequate for the limits

of the BESS system .

Alcala substation

132 kV / 45 kV / 15 kV9

Battery (BESS)

ContainersStep up

TransformersIntelligent secondary

substation

The Project and It’s Objectives

First Demonstration site: Alcalá substation

10

Motivation in Grid Connected Storage

3

Motivation in Grid Connected Storage

Evolution of Spain’s renewable generation

• Gas Natural Fenosa are interested in testing and validating this

technology for different applications/cases in distribution grid, at

different locations (need for portability) to validate the technology and

identify the business case storage. GNF provides the connection with

the grid and will operate the BESS.

• Renewable generation (hydro, wind, solar, thermal solar, biomass)

accounts for 50% of the total installed power and 40% of the energy

consumed.

0

10 000

20 000

30 000

40 000

50 000

60 000

Other

Thermosolar

PV

Wind

Small Hydro

Hydro

0

20 000

40 000

60 000

80 000

100 000

120 000

Installed power (MW). Source REE Energy produced (GWh). Source REE12

Motivation in Grid Connected Storage

Evolution of Spain’s renewable generation

• Storage is identified as one of the important technology solutions to

integrate and optimize Renewable Energy generation.

• Amongst the current storage technologies, batteries have the

advantage of the good efficiency and scalability. Li-ion batteries are

benefitting from a technology push in other sectors such as the car

industry.

• For distribution networks, a mobile solution is considered the most

ideal solution.

• Toshiba are interested in testing and verifying their SCiB (lithium)

storage technology at different locations and for different user-cases.

In this project they provide the BESS (Battery Energy Storage

System).

13

Initial Results

4

Initial Results

Smoothening/Flattening the Demand Load of the Al1–720 line

• The recent average demand from of the clients A, is used by the

battery’s local control system to determine the algorithm that

determines the periods of storage (current withdrawal) and current

injection B with the aim to levelize the load delivered to the grid by the

substation C.

A

B

C

15

Initial Results

Smoothening/Flattening the Demand Load of the Al1–720 line

• The line chosen shows relatively large variations over relatively short

periods of time with oscillations in the range of 500 kW being

observed, similar to the stored energy capacity.

• The real client demand (green curve) is subsequently adjusted to the

averaged the medium demand of the previous hours (blue line) by the

operation of the storage system (black curve) resulting in a real

“levelized” demand being delivered to the grid (red curve).

16

Main lessons Learnt

5

Main Lessons Learnt

There are areas for improvement

• The technology is new and there are areas of improvement that

we hope to address throughout this project as we all gain

experience:

• Simplify the installation for the targeted market.

• Increase energy density to obtain more power in a given

container and optimize the cell management within the

batteries.

• Reduce the cell calibration periods to maximise availability

• Control logic needs to be fully integrated into the power

electronics, not layered over it for faster and finer response

and control of the battery’s performance. Also we need to

develop and optimize control algorithms for real case studies.

• Communication systems can be optimized.

18

Next Steps

6

Next Steps

Extensive testing

• Additional user cases to be tested will hopefully include:

• Intermittent RES support

• Scheduled charge and discharge times and performance over

the five years

• Voltage drop avoidance (long MV lines)

• Voltage regulation (reactive)

• New Sites

• End of long MV line or MV line with a high intermittent sources

connected along it

• LV grid with temporary surges in power demand

• Our goal is simply to identify and analyze case studies where the

use of a storage system could potentially resolve future

issues/problems in the most economic way.20

Initial Conclusions

7

Initial Conclusions

• Storage integrated into the electrical system may well provide

a technical solution to the challenges presented by a more

variable generation scenario (Renewable Generation).

• This technology is in development. All the parties need to

understand the requirements and potential of the solution.

• Project allows both companies to be at the forefront of these

developments and to advance them towards commercial

applications if and when the Regulation permits.

22

Muchas gracias

Esta presentación es propiedad de Gas Natural

Fenosa. Tanto su contenido temático como diseño

gráfico es para uso exclusivo de su personal.

©Copyright Gas Natural SDG, S.A.