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Creating a common framework to evaluate the whole energy storage system performance

IEC TC 120

Christian Noce

Working Group 1 Convenor

IEC TC 120

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TC 120 – Electrical Energy Storage (EES) Systems

EES System (EESS) charge electrical energy as a grid-connected system, store this energy internally in somemanner, and discharge electrical energy as a grid-connected system (From Electricity to Electricity).

Standardization in the field of grid (public or private)integrated EESS.

TC 120 focuses on system aspects on EESS rather thanenergy storage devices.

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Scope

http://www.iec.ch/

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Structure and Liaison

WG 1 Terminology

WG 2 Unit parameters and testing methods

WG 3 Planning and installation

WG 4 Environmental issues

WG 5 Safety considerations

AHG 1 System aspects and gap analysis

Liaison

IEC:

TC 111, TC

8, TC 21,

TC 22, TC

57, TC 64,

TC 65, TC

95, TC 99

Liaison

ISO:

TC 207

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Convenor: Christian Noce (Italy)

IEC 62933 Project (International Standard)

WG 1 is responsible for the definition of meaningfuland necessary terms applicable to describe and tooperate EESS. It includes also auxiliary parameterswhich for example are used during testing andcommissioning only.

WG 1 may need to organize the consensus regardingthe terms interpretation between the differentWG/AHG or even other TC’s.

WG1 Terminology

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Convenor: Atsushi Honzawa (Japan)


WG 2 defines unit parameters and testing methods toensure the required performance of the EESS.

WG 2 provides techniques which are used to validatein a standardized procedure the performance dataprovided by the manufacture of the EESS. The testingconcerns the energy as well as the grid forming andgrid stability required parameters.

WG2 Unit parameters and testing methods

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Convenor: Wolfgang Schmitt (Germany)


WG3 establishes guidelines for the planning andinstallation of EESS, to be used by power systemsplanners, system integrators and commissioning staff.That will be also used by electrical system planners tointegrate energy sources by assessing all relevantaspects of their system and to receive the necessaryperformance parameters and information of the EESS.The storage technology selection is out of scope.

WG3 Planning and installation

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Convenor: Dae Seok Rho (South Korea)

IEC 62936 Project (Technical Specification)

WG4 handles impact from EESS in normal operation tosurrounding environment (including the end of lifehandling), the impact from EESS to people in chronicway and the impact from ambient conditions in caseof disasters. WG4 do not consider impacts fromsurrounding conditions to EESS in normal operation(WG3) and also do not consider impacts from EESS tohuman in the case of accident (WG5).

WG4 Environmental issues

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Convenor: Michel Demissy (France)

IEC 62937 Project (Technical Specification)

WG5 concerns the safe operation of an EESS within anelectrical grid including impacts from EESS to human inthe case of accident.

The potential risks to other grid connected users andsuppliers such as consumers, generators and servicepersonnel are also assessed and gathered in WG5.

WG5 Safety considerations

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Convenor: Ryan Franks (USA)

Overview of existing and ongoing standardizationwork that could lead to an overlap of the TC 120activities.

All WGs are asked to inform AHG 1 if they haveidentified potential fields of duplicates. AHG 1 willvalidate the finding and provide guidance.

One of the main purpose of AHG 1 is the avoidance ofduplications of the TC 120 work in relation to otherinternational normative activities.

AHG1 System aspects and gap analysis

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TC 120 focuses on system aspects.

EESS can be a complex multi stage system with severalpossible energy transformations, each stage is madeby components well standardized (e. g. transformers,power converter systems) or innovative components(e. g. new types of batteries).

Several IEC product standard are available for the mostpart of those components. So, TC 120 is avoiding theduplications (AHG 1 scope) of the work in relation toother international normative activities.

Which components must be taken into account?

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However a subsystem decomposition approach isunder evaluation, in order to identify the focalinstallation subsets, e. g.

• primary subsystem;

• auxiliary subsystem;

• accumulation subsystem;

• power conversion subsystem;

• control subsystem;

• data exchange interface … … …

Which components must be taken into account?

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An insufficient standardization of data exchangeinterfaces in the components integration and with thebuyer/customer control system, increase the EESScosts.

The complete multi supplier interoperability allow theEESS integrator to select/test new supplier withoutexpensive interface redesign, removing a barrier tonew player. A standard in the integration with thecustomer control system allow the re-use of interfacesolutions/experiences between different projects.

Standardization of data exchange interfaces

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Project IEC 61850-90-15 Hierarchical architecture of aDER system and project IEC 61850-90-9 Use of IEC61850 for electrical storage systems are one of themain topics of the liaison with TC 57 WG 17.

Standardization of data exchange interfaces

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Creating a common framework to evaluate the whole energy storage system performance

IEC TC 120

Christian Noce

Working Group 1 Convenor

IEC TC 120

eswf2015 - noce - creating a common framework to evaluate...

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