Annex I to contract - Technical Specifications

Institute for Energy and Transport
Energy Security Unit
Ref. Ares(2014)3134831 - 24/09/2014
NL-Petten: "Supply, installation and maintenance
of a 75kW/150kWh battery storage system for grid connected
and island operation at the JRC-IET."
OJ: 2014/S 183-322139 of 12/09/2014
- Technical Specifications -
The Institute for Energy and Transport (IET) is one of the seven institutes of the Joint
Research Centre, which is a directorate-general of the European Commission. IET is
based both in Petten (the Netherlands) and Ispra (Italy) and has a multidisciplinary team
of more than 300 academic, technical and support staff members. The mission of IET is
to provide support to EU policies to ensure sustainable, safe, secure and efficient energy
production, distribution and use, and to foster sustainable and efficient transport.
One of the IET units that are based in Petten is dedicated to energy security (ESU). A
research project set up within this unit is devoted to studies on smart electricity systems
and interoperability (SESI), including so-called smart grids. Besides being more
intelligent, efficient, quality-focused and resilient than current networks, smart grids are
expected to better integrate renewable energy sources (RES), which is required for
meeting the EU “20-20-20” targets.
Increased penetration of RES in electricity networks results in growing power production
variability. Hence reliable balancing technologies are required a/ to provide extra power
when RES power production is too low and b/ to store energy when there is a surplus of
produced RES power. This balancing task can be provided by energy storage
technologies, not only in transmission and distribution grids but also in smaller-scale
networks. The requested battery storage system must allow carrying out a variety of
experiments in this field.
The scope of the contract is the supply, installation and maintenance of a battery storage
system for grid connected operation and island operation, with the following general
Storage power/capacity: 75 kW and 150 kWh
Lithium-ion battery
Expected use: 1 daily charge/discharge cycle
The whole system must be fully operational after it is connected to the existing
JRC AC grid (Plug & play)
Local and remote control
Bi-directional 4 quadrant power converter
AC circuit breakers and protection
DC circuit breakers and protection
Main isolation transformer
Auxiliary power distribution circuit
Metering on AC and DC side
Integration in a standard 20 foot outdoor container
Able to operate grid connected and off-grid
User's manual and software in English
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The equipment shall meet all of the mandatory technical requirements given below. In
view of this, the tenderer shall reproduce the following table in his offer, indicate
compliance, yes or no, and add further comments where deemed necessary as to allow
complete evaluation of conformity of the equipment with the mandatory technical
requirements mentioned in this table.
Equipment and mandatory requirements
A. Battery
Chemistry: Lithium ion
Maximum voltage: < 1000 Vdc
Minimum storage system capacity available on the AC grid side
(discharge rate C/2, discharge in 2 hours): 150 kWh
DC breaker and protection (compliant with EN 50272-2:2001 or
B. Power converter
Grid-tie and off-grid operation
3-phase, 0.4 kV, 50 Hz
Continuous power (at 25°C ambient temperature): 75 kW
4 quadrant operation for apparent power
Supervision of battery charging and discharging (power
limitation depending on state of charge, coordinated action with
battery EMS, protection against overcharge, protection against
full discharge).
Efficiency: > 90% (from 25% to 100% of rated power). The
efficiency curve (at power factor=1) shall be provided in the
Ramping capacity (P and Q): 0-100% in less than 1 second
AC breaker and protection (compliant with Dutch standard
NEN1010 or equivalent)
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Isolation transformer between JRC AC grid and the DC source
P and Q dynamically settable in grid-tie operation
Continuous VAr capability is higher than 50 kVA
C. Monitoring and control
Local on-device user interface (screen size >= 5 inch)
Remote control capability (SCADA): MODbus/TCP
Control Signals: select operation mode, specify set-points (P, Q,
cosphi), switch on/off battery, switch on/off converter,
Disconnect from grid, synchronize to grid
Monitoring signals: Ugrid, fgrid, Pconv, Qconv, converter state,
SOC,Vbat, Ibat, Ibatmax, battery state, alarms, AC measurement
on all phases.
Dynamic active power control (P): in grid-tie operation, the
active power is specified according to a set-point sent by the GUI
or the SCADA. The transition time between two set-point values
shall be less than 1 second.
Dynamic reactive power control (Q): in grid-tie operation, the
reactive power shall be specified according to a set-point sent by
the GUI or the SCADA. The transition time between two setpoint values should be less than 1 second.
Island Operation capability: the island operation shall allow
fixed frequency and voltage operation. The value of frequency
and voltage can be changed through the GUI or the SCADA
Low voltage ride through (LVRT). The LVRT parameters shall
be adaptable in order to suit the requirements of Distributed
Generation systems in the different European countries. The
available settings for the LVRT parameters shall be provided in
the offer.
User's Manual provided in English language
All software needed for the operation of the system shall be
provided in English and in the latest versions available at the
time of the system commissioning and must include any
required licenses without time limitations.
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D. Container
Size: Standard 20 foot; with a suitable floor able to support the
(supplied) battery system weight.
Outside door: Min 875/2000 mm with cylinder lock
Thermal insulation: minimum 5 cm foam insulation on wall,
ceiling and floor
Internal lighting:
Internal electrical plugs:
Electrical cabinet internal appliances: the electrical cabinet
(3+1 phase, 16 A, 400 Vac) is supplying internal 1-phase
appliances: the lights (phase 1), the AC plugs (phase 1 and phase
2), and the auxiliary supply of the battery converter (phase 3). An
external power supply cable (not part of the offer) will be
connected to the cabinet. The cabinet includes standard safety
devices (RSD, automatic fuses)
Connection box AC cables: an AC busbar is located in a
separate connection box inside the container. On the outside wall
of the container, are installed European standard 125A CEE
female plug + male plug with 5 poles. AC cables (3-phase, 5
conductors, with double isolation) are connected on one end to
the internal busbar and on the other end to the external 125A
CEE plugs. The box includes standard safety devices (automatic
Connection box for communication cables: a separate
connection box inside the container is available for connecting
the external communication cables.
Inside temperature control: the
container must be controlled (ideally by forced ventilation) to
allow continuous operation of the converter at nominal power
with closed window and door, all year round
Openings for cables: openings shall be available for the power
AC, the container power supply and the communication cables.
Openings must be available both in the lateral walls and in the
Opening for maintenance: if required for maintenance, it must
be possible to easily remove the different components of the
storage system out of the container.
1x aluminium sliding window with lock
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2x fluorescent
4x 16A, 230Vac on the walls
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Painting: the inside and outside surfaces of the container must
be painted in white colour.
Mobility: the equipment inside the container shall be well fixed
to allow standard international transportation after the system
E. Environment
Min outdoor temp
Max outdoor temp
Cooling power electronics: Fan forced ventilation shall be
provided and shall be sufficient up to 20°C outdoor temperature.
In addition, in case of higher outdoor temperatures (up to 40°C) ,
an air-conditioning unit shall be available for cooling.
Noise: < 85 dBA @ 2m
Enclosure: IP rating IP23
< 95% non-condensing
Outdoor container
F. Standards compliance and warranty
CE Marking
IEC 62103 – Electronic equipment for use in
power installations
EMC: IEC 61000-3-4, IEC 61000-3-5
2 years
Stage 1
Stage 1a: supply and installation.
Supply and installation of the equipment shall be completed in no longer than three (3)
months after the contract’s entry into force. The container shall be installed on a parking
place of JRC-IET institute. The cabling work for connecting the container to the JRC grid
will be organized by JRC.
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Stage 1b: commissioning
It shall include testing of all functions and capabilities of the installed equipment at all
modes of operation and should be executed no later than two (2) months after the end
of stage 1a.
During the commissioning, the different functions and performance of the storage system
shall be demonstrated by the contractor after JRC has connected the storage system to its
grid. The costs for the commissioning tests must be included in this offer. During the
commissioning, the following functions shall be tested:
Battery cycling test. During the test, the storage system is connected to the low
voltage grid of the JRC. Starting with a fully charged battery (SOC >99%), the
storage system is discharged by injecting a constant AC Power of 75 kW in the
JRC grid during 2 hours. This first phase shall be successful if the storage system
is able to inject 150 kWh in the JRC grid. In a second phase, the battery is
recharged with an AC power of 75 kW until the battery is fully charged (SOC
>99%). The end of charge and discharge, the change of maximum currents must
be automatically supervised by the storage system controller. During this test, the
efficiency of the converter will also be recorded. The local and remote control and
monitoring (GUI and SCADA) shall be tested.
Grid connected (parallel) operation: test of the available dynamic active power
control (P) functions (fixed setpoint, function of frequency and state of charge,
schedule), test of the available dynamic reactive power control (Q) functions
(fixed setpoint, function Q(U), function G(P))
Island operation: test on a variable load profile and on a variable generation
The commissioning is subject to a well-documented technical report (in English)
prepared and signed by the Contractor and upon approval countersigned by Commission
staff. In case of a negative test result, the Contractor shall on his own costs take any
necessary measures to successfully pass a second commissioning test. In case of a
positive test result, the Commission shall sign the Certificate of Conformity (Annex III to
the contract). Notwithstanding the completion of training, the date of signature of this
annex shall be considered the start of Stage 2 - warranty.
Stage 1c: training
At the request of the Commission, subject to explicit release by the Commission of that
sub-stage, the Contractor shall give minimum 2 working days of operational training on
the equipment to staff of the Commission (up to 5 persons) at the Commission premises.
The exact dates of the training sessions have to be arranged upon mutual agreement
among the parties, but shall be provided at the latest within 15 working days upon
request. The training shall be given in English.
The main content of the training shall be:
Overview of storage system components
Safety aspects
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Operation of the storage system in grid connected mode (functions, parameters)
Operation of the storage system in island mode(functions, parameters)
Transition between island and grid connected modes(functions, parameters)
Remote control and monitoring
Maintenance issues
Stage 2: Warranty including maintenance
The warranty, which shall include preventive maintenance services (the latter to be
performed as described below under stage 3a) of at least 24 months, shall start after
signature of the Certificate of Conformity (Annex III) by the JRC-IET related to substage 1b.
The equipment shall be covered by at least 24 months warranty against all hidden defects
in manufacture, materials or components. Performance of the equipment must be
continuous and must comply with the specified requirements for the entire warranty
period. In particular, it is expected that the storage capacity does not drop below the
requirements because of battery aging. Preventive maintenance shall take place at least
once a year and shall include the control of the equipment's performance, its calibration
and replacement of any defective part or component thereof at the expense of the
During the warranty period, the Contractor shall, upon unsatisfactory equipment
performance or in case the equipment cannot be operated safely respond to a maintenance
request of the Commission’s technical responsible (or his deputy) not later than two (2)
working days as of the date of the Commission’s request by giving technical assistance
using appropriate means of communication (e.g. by phone or e-mail). If necessary,
technical competent personnel of the Contractor – shall be on site not later than five (5)
working days as of the date of such request by the Commission.
Stage 3: Maintenance
Without prejudice to contract clauses, the duration of the preventive and corrective
maintenance shall be equal to 12 months, as of the date of release by the Commission of
this stage. The maintenance is automatically extended two (2) times of same duration and
scope following expiry of the previous period.
Maintenance intervention(s) shall in principle take place at the Commission premises in
Petten during normal working hours (Monday-Friday, 08.30 hrs to 17.00 hrs, excluding
holidays) upon mutual agreement among both parties on the schedule and shall be
performed by technical staff of the Contractor who will have free access to the equipment
to be maintained. The technical staff of the Commission will be present during on-site
When deemed necessary and by mutual agreement of both parties, offsite intervention(s)
at the sole expense of the Contractor (including shipment) may take place.
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Sub-Stage 3a: Preventive maintenance
Without prejudice to contract clauses, preventive maintenance shall mean the periodic
intervention by the Contractor to the Equipment to ensure satisfactory Equipment
performance and shall include:
Onsite visit(s) at least once every 12 months or according to the periodicity
defined by the manufacturer(s) and the manual(s) of the components of the
Check of proper functioning of all components of the equipment including related
minor repairs.
Any software updates if needed for improving the performance of the equipment.
The interventions shall be made in agreement with the Commission. Preventive
maintenance shall take place at the premises of the Commission unless otherwise
mutually agreed.
Sub-stage 3b: Corrective maintenance
Without prejudice to contract clauses, corrective maintenance shall mean in addition to
preventive maintenance any intervention by the Contractor upon an explicit request by
the Commission in case of improper performance or breakdown of any of the equipment
or its functionalities or its upgrading to re-establish its satisfactory performance.
The costs will be in accordance with the actual performed hours and spare
parts/consumables used and following the prices as per Annex II (Tenderer's offer) for the
hourly rate and travelling costs. The spare parts/consumables to be used shall be subject
to prior approval by the use of an order form (as per Annex VI of the contract). The
contractor shall provide an offer for the required material and the order shall be signed by
the Commission before the corrective maintenance takes place.
Each intervention shall principally be resolved within 10 consecutive working days after
reception of the request and/or order form. This period may be extended by the
Commission upon a duly substantiated prolongation request by the Contractor.
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