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     Network Working Group
     Internet-Draft                                 J. Parello
     Intended Status: Informational        Cisco Systems, Inc.
     Expires: September 12, 2012                July 8, 2012
     
     
     
                   Energy Management Terminology
                 draft-parello-eman-definitions-06
     
     
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        and are provided without warranty as described in the
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     Abstract
     
        This document contains definitions and terms used in
        the Energy Management Working Group. Each term
        contains a definition(s), example, and reference to a
        normative, informative or well know source. Terms
        originating in this draft should be either composed of
        or adapted from other terms in the draft with a
        source. The defined terms will then be used in other
        drafts as defined here.
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
     
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     Table of Contents
     
        1. Introduction................................................4
        2. Terminology.................................................5
           Device......................................................5
           Component...................................................5
           Energy Management...........................................5
           Energy Management System (EnMS).............................6
           ISO Energy Management System................................7
           Energy......................................................7
           Power.......................................................7
           Demand......................................................7
           Power Characteristics.......................................8
           Power Quality...............................................8
           Electrical Equipment........................................9
           Non-Electrical Equipment (Mechanical Equipment).............9
           Energy Object...............................................9
           Electrical Energy Object....................................9
           Non-Electrical Energy Object................................9
           Energy Monitoring..........................................10
           Energy Control.............................................10
           Provide Energy:............................................10
           Receive Energy:............................................10
           Power Interface............................................11
           Power Inlet................................................11
           Power Outlet...............................................11
           Energy Management Domain...................................11
           Energy Object Identification...............................12
           Energy Object Context......................................12
           Energy Object Relationship.................................12
           Aggregation Relationship...................................13
           Metering Relationship......................................13
           Power Source Relationship..................................13
           Proxy Relationship.........................................14
           Energy Object Parent.......................................14
           Energy Object Child........................................14
           Power State................................................15
           Power State Set............................................15
           Nameplate Power............................................15
        3. Security Considerations....................................16
        4. IANA Considerations.......................................16
        5. Acknowledgments............................................16
        6. References.................................................16
           Normative References.......................................16
           Informative References.....................................16
        7. Authors' Addresses........................................ 17
     
     
     
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     1. Introduction
     
        Within Energy Management there are terms that may
        seem obvious to a casual reader but in fact require a
        rigorous and sourced definition.  To avoid any
        confusion in terms among the working group drafts,
        one glossary / lexicon of terms should exist that all
        drafts can refer to. This will avoid a review of
        terms multiplied across drafts.
     
        This draft will contain a glossary of definitions of
        terms that can be agreed upon by the working group
        outside of the context of drafts and then included in
        or sourced to this draft.
     
        Each term will contain a definition(s), a normative
        or informative reference, an optional example, an
        optional comment(s) listed a note(s).
     
        All terms should be rooted with a well-known
        reference. If a definition is taken verbatim from a
        reference then the source is listed in square
        brackets. If a definition is derived from a well-
        known reference then the source is listed as "Adapted
        from" with the reference listed in square brackets.
        If a defined term is newly defined here the reference
        will indicate as such by stating "herein" and if
        applicable list any composing terms from this
        document.
     
        When applicable the [IEEE100] was used as the
        preferred source. If a term was not available from
        [IEEE100], then [IEC60050] was used.  When these were
        multiple items from [IEEE100], [IEC60050] or
        [ISO50001], there were all included.
     
     
     
     
     
     
     
     
     
     
     
     
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     2. Terminology
     
     
     
     Device
     
        A piece of electrical or non-electrical equipment.
     
       Reference: Adapted from [IEEE100]
     
     Component
     
        A part of an electrical or non-electrical equipment (Device).
     
       Reference: Adapted from [ITU-T-M-3400]
     
     Energy Management
     
       Energy Management is a set of functions for measuring,
       modeling, planning, and optimizing networks to ensure
       that the network elements and attached devices use
       energy efficiently and is appropriate for the nature
       of the application and the cost constraints of the
       organization.
     
       Reference: Adapted from [ITU-T-M-3400]
     
       Example: A set of computer systems that will poll
       electrical meters and store the readings
     
       NOTES:
       1. Energy management refers to the activities, methods,
          procedures and tools that pertain to measuring,
          modeling, planning, controlling and optimizing the
          use of energy in networked systems [NMF].
     
       2. Energy Management is a management domain which is
          congruent to any of FCAPS areas of management in the
          ISO/OSI Network Management Model [TMN]. Energy
          Management for communication networks and attached
     
     
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          devices is a subset or part of an organization's
          greater Energy Management Policies.
     
     Energy Management System (EnMS)
     
       An Energy Management System is a combination of
       hardware and software used to administer a network
       with the primary purpose being Energy Management.
     
       Reference: Adapted from [1037C]
     
       Example: A single computer system that polls data from
       devices using SNMP
     
       NOTES:
       1. An Energy Management System according to [ISO50001]
          (ISO-EnMS) is a set of systems or procedures upon
          which organizations can develop and implement an
          energy policy, set targets, action plans and take
          into account legal requirements related to energy
          use.  An EnMS allows organizations to improve energy
          performance and demonstrate conformity to
          requirements, standards, and/or legal requirements.
     
       2. Example ISO-EnMS:  Company A defines a set of
          policies and procedures indicating there should
          exist multiple computerized systems that will poll
          energy from their meters and pricing / source data
          from their local utility. Company A specifies that
          their CFO should collect information and summarize
          it quarterly to be sent to an accounting firm to
          produce carbon accounting reporting as required by
          their local government.
     
       3. For the purposes of EMAN, the definition from
          [1037C] is the preferred meaning of an Energy
          Management System (EnMS).  The definition from
          [ISO50001] can be referred to as ISO Energy
          Management System (ISO-EnMS).
     
     
     
     
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     ISO Energy Management System
     
       Energy Management System as defined by [ISO50001]
     
       Reference: herein
     
     Energy
     
       That which does work or is capable of doing work. As
       used by electric utilities, it is generally a
       reference to electrical energy and is measured in
       kilo-watt hours (kWh).
     
       Reference: [IEEE100]
     
       NOTES
       1. Energy is the capacity of a system to produce
          external activity or perform work [ISO50001]
     
     Power
     
       The time rate at which energy is emitted, transferred,
       or received; usually expressed in watts (or in joules
       per second).
       Reference: [IEEE100]
     
     Demand
     
       The average value of power or a related quantity over
       a specified interval of time. Note: Demand is
       expressed in kilowatts, kilovolt-amperes, kilovars, or
       other suitable units.
     
       Reference: [IEEE100]
     
       NOTES:
       1. typically kilowatts
     
     
     
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       2. Energy providers typically bill by Demand
          measurements as well as for maximum Demand per
          billing periods.  Power values may spike during
          short-terms by devices, but Demand measurements
          recognize that maximum Demand does not equal maximum
          Power during an interval.
     
     Power Characteristics
     
        Measurements of the electrical current, voltage and frequencies
        at a given point in an electrical power system.
     
        Reference: Adapted from [IEC60050]
     
        NOTES:
     
        1. Power Characteristics is not intended to be judgmental with
        respect to a reference or technical value and are independent of
        any usage context.
     
     Power Quality
     
       Characteristics of the electric current, voltage and
       frequencies at a given point in an electric power
       system, evaluated against a set of reference technical
       parameters. These parameters might, in some cases,
       relate to the compatibility between electricity
       supplied in an electric power system and the loads
       connected to that electric power system.
     
       Reference: [IEC60050]
     
       NOTES:
       1. Electrical characteristics representing power
       quality information are typically required by customer
       facility energy management systems. It is not intended
       to satisfy the detailed requirements of power quality
       monitoring. Standards typically also give ranges of
       allowed values; the information attributes are the raw
       measurements, not the "yes/no" determination by the
       various standards.
     
       Reference: [ASHRAE-201]
     
     
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     Electrical Equipment
     
       A general term including materials, fittings, devices,
       appliances, fixtures, apparatus, machines, etc., used
       as a part of, or in connection with, an electric
       installation.
     
        Reference: [IEEE100]
     
     Non-Electrical Equipment (Mechanical Equipment)
     
        A general term including materials, fittings, devices
       appliances, fixtures, apparatus, machines, etc., used
       as a part of, or in connection with, non-electrical
       power installations.
     
        Reference: Adapted from [IEEE100]
     
     Energy Object
     
        An Energy Object (EO) is a piece of equipment that is part of or
        attached to a communications network that is monitored,
        controlled, or aids in the management of another device for
        Energy Management.
     
        Reference: herein
     
     Electrical Energy Object
     
        An Electrical Energy Object (EEO) is an Energy Object
        that is a piece of Electrical Equipment
     
        Reference: herein, Electrical Equipment
     
     Non-Electrical Energy Object
     
        A Non-Electrical Energy Object (NEEO) an Energy Object
        that is a piece of Non-Electrical Equipment.
     
        Reference: herein, Non-Electrical Equipment.
     
     
     
     
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     Energy Monitoring
     
       Energy Monitoring is a part of Energy Management that
       deals with collecting or reading information from
       Energy Objects to aid in Energy Management.
     
       Reference: herein
     
       NOTES:
       1. This could include Energy, Power, Demand, Power
          Quality, Context and/or Battery information.
     
     Energy Control
     
       Energy Control is a part of Energy Management that
       deals with directing influence over Energy Objects.
     
        Reference: herein
     
       NOTES:
       1. Typically in order to optimize or ensure its
          efficiency.
     
     
     Provide Energy:
        An Energy Object "provides" energy to another Energy
        Object if there is an energy flow from this Energy
        Object to the other one.
        Reference: herein
     
     Receive Energy:
     
        An Energy Object "receives" energy from another
        Energy Object if there is an energy flow from the
        other Energy Object to this one.
        Reference: herein
     
     
     
     
     
     
     
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     Power Interface
     
        A Power Interface (or simply interface) is an interconnection
        among devices or components where energy can be provided,
        received or both.
     
        Reference: herein
     
     
     Power Inlet
     
        A Power Inlet (or simply inlet) is an interface at which a
        device or component receives energy from another device or
        component.
     
        Reference: herein
     
     
     
     Power Outlet
     
        A Power Outlet (or simply outlet) is an interface at which a
        device or component provides energy to another device or
        component.
     
        Reference: herein
     
     
     Energy Management Domain
     
        An Energy Management Domain is a set of Energy Objects
        where all objects in the domain are considered one
        unit of management.
        Reference: herein
     
        Example: All EEO's drawing power from the same
        distribution panel with the same AC voltage within a
        building, or all EEO's in a building for which there
        is one main meter, would comprise an Energy Management
        Domain.
     
        NOTES:
        1. Typically, this set will have as members all EO's
          that are powered from the same source.
     
     
     
     
     
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     Energy Object Identification
     
       Energy Object Identification is a set of attributes
       that enable an Energy Object to be: uniquely
       identified among all Energy Management Domains; linked
       to other systems; classified as to type, model, and or
       manufacturer.
     
       Reference: herein
     
     Energy Object Context
     
       Energy Object Context is a set of attributes that
       allow an Energy Management System to classify the use
       of the Energy Object within an organization.
     
       Reference: herein
     
       NOTES:
       1. The classification could contain the use and/or the
          ranking of the Energy Object as compared to other
          Energy Objects in the Energy Management Domain.
     
     
     Energy Object Relationship
     
        An Energy Object Relationship is a functional
        association among Energy Objects
     
        NOTES
        1. Relationships can be named and could include
          Aggregation, Metering, Power Source, and Proxy.
     
        2. The Energy Object is the noun or entity in the
          relationship with the relationship described as the
          verb.
     
        Example: If EO x is a piece of Electrical Equipment
        and EO y is an electrical meter clamped onto x's
        power cord, then x and y have a Metering
        Relationship. It follows that y meters x and that x
        is metered by y.
     
     
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        Reference: Adapted from [CHEN]
     
     Aggregation Relationship
     
       An Aggregation Relationship is an Energy Object
       Relationship where one Energy Object aggregates the
       Energy Management information of one or more other
       Energy Objects.
       These Energy Objects are referred to as having an
       Aggregation Relationship.
     
       Reference: herein
     
       NOTES:
       1. Aggregate values may be obtained by reading values
          from multiple Energy Objects and producing a single
          value of more significant meaning such as average,
          count, maximum, median, minimum, mode and most
          commonly sum [SQL].
     
     Metering Relationship
     
        A Metering Relationship is an Energy Object
        Relationship where one Energy Object measures the
        Power or Energy of one or more other Energy Objects.
     
        These Energy Objects are referred to as having a
        Metering Relationship.
     
        Reference: herein
     
        Example: a PoE port on a switch measures the Power it
        provides to the connected Energy Object.
     
     
     Power Source Relationship
     
        A Power Source Relationship is an Energy Object
        Relationship where one Energy Object is the source of
        or distributor of Power to one or more other Energy
        Objects.
     
     
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        These Energy Objects are referred to as having a Power
        Source Relationship.
     
        Reference: herein
     
        Example: a PDU provides power for a connected device.
     
     
     Proxy Relationship
     
        A Proxy Relationship is an Energy Object Relationship
        where one Energy Object provides the Energy Management
        capabilities on behalf of one or more other Energy
        Objects.
     
        These Energy Objects are referred to as having a Proxy
        Relationship.
     
        Reference: herein
     
        Example: a protocol gateways device for Building
        Management Systems (BMS) with subtended devices.
     
     
     Energy Object Parent
     
        An Energy Object Parent is an Energy Object that
        participates in an Energy Object Relationship and is
        considered as providing the capabilities in the
        relationship.
     
        Example: in a Metering Relationship, the Energy Object
        that is metering is called the Energy Object Parent,
        while the Energy Object that is metered is called the
        Energy Object Child.
     
        Reference: herein
     
     
     Energy Object Child
     
        An Energy Object Child is an Energy Object that
        participates in an Energy Object Relationship and is
        considered as receiving the capabilities in the
        relationship.
     
     
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        Example: in a Metering Relationship, the Energy Object
        that is metering is called the Energy Object Parent,
        while the Energy Object that is metered is called the
        Energy Object Child.
     
     
        Reference: herein
     
     Power State
     
        A Power State is a condition or mode of a device that
        broadly characterizes its capabilities, power
        consumption, and responsiveness to input.
     
        Reference: Adapted from [IEEE1621]
     
        NOTES:
     
        1. A Power State can be seen as a power setting of an
          Energy Object that influences the power
          consumption, the available functionality, and the
          responsiveness of the Energy Object.
     
        2. A Power State can be viewed as one method for
          Energy Control
     
     
     Power State Set
     
        A collection of Power States that comprise one named
        or logical grouping of control is a Power State Set.
     
        Reference: herein
     
        Example: The states {on, off, and sleep} as defined in
        [IEEE1621], or the 16 power states as defined by the
        [DMTF] can be considered two different Power State
        Sets.
     
     
     Nameplate Power
     
        The Nameplate Power is the maximal (nominal) Power
        that a device can support.
     
        Reference: herein
     
     
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        NOTES:
     
        1. This is typically determined via load testing and
          is specified by the manufacturer as the maximum
          value required for operating the device.  This is
          sometimes referred to as the worst-case Power.  The
          actual or average Power may be lower.  The
          Nameplate Power is typically used for provisioning
          and capacity planning.
     
     
     3. Security Considerations
     
        None
     
     4. IANA Considerations
     
        None
     
     
     5. Acknowledgments
     
        The author would like to thank the authors of the
        current working group drafts for the discussions and
        definition clarifications
     
     6. References
     
     Normative References
     
     
     Informative References
     
     
        [IEEE100] "The Authoritative Dictionary of IEEE
                Standards Terms"
        http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?pun
                umber=4116785
     
        [IEEE1621]  "Standard for User Interface Elements in
                Power Control of Electronic Devices Employed
                in Office/Consumer Environments", IEEE 1621,
                December 2004.
     
     
     
     
     
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       [IEC60050] International Electrotechnical Vocabulary
                http://www.electropedia.org/iev/iev.nsf/welco
                me?openform
     
        [ISO50001] "ISO 50001:2011 Energy management systems -
                Requirements with guidance for use",
                http://www.iso.org/
     
        [DMTF] "Power State Management Profile DMTF  DSP1027
                Version 2.0"  December 2009
                http://www.dmtf.org/sites/default/files/stand
                ards/documents/DSP1027_2.0.0.pdf
     
        [TMN] "TMN Management Functions : Performance
                Management", ITU-T M.3400
     
        [NMF] "Network Management Fundamentals", Alexander
                Clemm, ISBN: 1-58720-137-2, 2007
     
        [ITU-T-M-3400] TMN recommandation on Management
                Functions (M.3400), 1997
     
        [CHEN] "The Entity-Relationship Model: Toward a
                Unified View of Data",  Peter Pin-shan Chen,
                ACM Transactions on Database Systems, 1976
     
        [1037C] US Department of Commerce, Federal Standard
                1037C, http://www.its.bldrdoc.gov/fs-1037/fs-
                1037c.htm
     
        [SQL] ISO/IEC 9075(1-4,9-11,13,14):2008
     
        [ASHRAE-201] "ASHRAE Standard Project Committee 201
                (SPC 201)Facility Smart Grid Information
                Model", http://spc201.ashraepcs.org
     
     
     7. Authors' Addresses
     
     
      John Parello
      Cisco Systems, Inc.
      3550 Cisco Way
      San Jose, California 95134
      US
     
      Phone: +1 408 525 2339
      Email: jparello@cisco.com
     
     
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