IED — Intelligent Electronic Device

What is IED?

IED — Intelligent Electronic Device

In the pow­er sec­tor, intel­li­gent elec­tron­ic devices (IED) are micro­proces­sor based pow­er sys­tem equip­ment, such as cir­cuit break­ers, trans­form­ers and capac­i­tor banks, pro­vid­ing con­trol and automa­tion functions.

IEDs receive and process data from sen­sors and oth­er equip­ment to issue con­trol com­mands or adjust tap poi­si­tions in order to pre­vent fail­ures and main­tain the desired volt­age level.

  • Com­mon types of IEDs include pro­tec­tive relays, cir­cuit break­er, capac­i­tor bank switch­es, reclos­er con­trollers and volt­age regulators. 
  • Most IEDs car­ry com­mu­ni­ca­tion ports and stan­dard com­mu­ni­ca­tion pro­to­col tech­nol­o­gy (e.g. DNP3, IEC 104 or IEC 61850) to com­mu­ni­cate direct­ly with SCADA sys­tems or RTUs.
  • The term is often also used as a syn­onym for mod­ern pro­tec­tion relays, which use a micro­proces­sor to per­form sev­er­al pro­tec­tive, con­trol and relat­ed functions.
  • Mod­ern IEDs are also designed to sup­port the IEC 61850 stan­dard for sub­sta­tion automa­tion, which pro­vides full inter­op­er­abil­i­ty and enables advanced pro­tec­tion and com­mu­ni­ca­tion functions.
  • With increas­ing intel­li­gence, IEDs are used as a new alter­na­tive to, or a com­ple­ment to tra­di­tion­al­ly used remote ter­mi­nal units (RTUs). 
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    Grid & Substation Automation

    RTU most com­mon­ly stands for Remote Ter­mi­nal Unit, but is some­times also used as an abbre­vi­a­tion for Remote Teleme­try Unit or Remote Tele­con­trol Unit.

    RTUs are devices that rely on micro­proces­sors and com­mu­ni­ca­tion inter­faces to auto­mat­i­cal­ly mon­i­tor and con­trol field devices and estab­lish a bridge to the plant con­trol or SCADA (super­vi­so­ry con­trol and data acqui­si­tion) systems.

    Super­vi­so­ry con­trol and data acqui­si­tion (SCADA) sys­tems col­lect, mon­i­tor and process real-time data to:

    • Auto­mate and con­trol indus­tri­al process­es remote­ly or locally
    • Pro­vide a human-machine inter­face (HMI) to direct­ly inter­act with devices such as relays, sen­sors, gen­er­a­tors, pumps, valves and others
    • Record events and auto­mate reporting

    An Intel­li­gent Elec­tron­ic Device (IED) is a term used in the elec­tric pow­er indus­try to describe micro­proces­sor-based con­trollers of pow­er sys­tem equip­ment, such as cir­cuit break­erstrans­form­ers and capac­i­tor banks.

    Sequence of events record­ing (SER) is per­formed by micro­proces­sor based sys­tems, which mon­i­tor col­lect­ed data inputs and record the time and sequences of the changes.

    Sequence of events recorders rely on exter­nal time sources such as GPS or radio clocks to record the exact time of state of each change.

    IEDs & iGrid

    Our group part­ner Thytron­ic pro­vides state-of-the-art IEDs with advanced com­mu­ni­ca­tion capabilities.

    Thanks to our numer­ous projects accross the world, we have a long track-record of IEDs we have inte­grat­ed and worked with.

    X‑MORE Family by Thytronic

    Mul­ti-func­tion high-end IEDs for pro­tect­ing, mon­i­tor­ing and con­trol­ling pow­er systems

    • Accu­rate measurements
    • Mod­u­lar hard­ware and software
    • High-pre­ci­sion time synchronization
    • iGrid sub­sta­tion automa­tion software

     for Feed­ers, Trans­form­ers, Capac­i­tor Banks, Gen­er­a­tors, Motors and many more

    iGW‑S Substation Gateway

    Pow­er­ful and reli­able sub­sta­tion gate­way, able to run either in stand­alone or redun­dant modes, with an embed­ded Eth­er­net switch (4 ports) and IEC 61850 client and serv­er capabilities.

    iGrid Solutions and Applications

    Automation with IEC 61850 

    The IEC 61850 stan­dard is enabling new opor­tu­ni­ties for ven­dor inter­op­er­abil­i­ty and advanced sub­sta­tion automa­tion. Find out how you can take advan­tage of IEC 61850 with easy-to-use and adapt­able solu­tions for a sim­ple migra­tion or retrofit.

    HV Substation Automation

    Pow­er­ful sub­sta­tion automa­tion sys­tems often han­dle numer­ous com­mu­ni­ca­tion pro­to­cols and media with­in one net­work, which can result in expen­sive and com­plex projects.  Avoid these prob­lems with inter­op­er­a­ble tech­nol­o­gy and smart con­fig­u­ra­tion tools.

    MV Distribution Grid Automation

    It is often dif­fi­cult to find the exact solu­tion you need in a MV appli­ca­tion, lead­ing to high­er costs than nec­es­sary. With our scal­able and adapt­able solu­tions you will be able to only pay for what you real­ly need, with­out com­prim­is­ing on qual­i­ty or security.

    Photovoltaic Power Station

    Using an open and scal­able SCADA sys­tem to mon­i­tor and con­trol a PV plant comes with many ben­e­fits on sev­er­al lev­els. Find out how advanced com­mu­ni­ca­tion tech­nol­o­gy affects PV oper­a­tion, main­te­nance, sys­tem design, invest­ment secu­ri­ty, profits…

    Protocol Conversion

    As com­mu­ni­ca­tion net­works grow in com­plex­i­ty, “plug and play” promis­es become hard­er to keep. Inter­op­er­a­ble pro­to­col con­vert­ers and soft­ware solu­tions with state-of-the-art capa­bil­i­ties and funci­tonal­i­ties can be the bridge to all the func­tions and flex­i­bil­i­ty your net­work needs.

    Generation Dispatch Control Center

    With a gen­er­a­tion dis­patch enter you can auto­mat­i­cal­ly con­trol the gen­er­a­tion of all pow­er plants and make direct bids for ancil­lary ser­vices on one plat­form. Check out the most effi­cient com­mu­ni­ca­tion path between gen­er­a­tion sites, grid oper­a­tors and the pow­er market.

    Smart Metering

    A sin­gle device that col­lects, process­es, trans­fers smart meter data and load curves from sev­er­al meters in dif­fer­ent pro­to­cols via ser­i­al or Eth­er­net, whilst pro­vid­ing advanced automa­tion func­tions? Adapt­able designs and a full com­mu­ni­ca­tion pro­to­col suite make it possible. 

     

    Switchgear & Transformers

    Some­times you have pre­ferred gear for a project or it has already been installed, but it is lack­ing the com­mu­ni­ca­tion capa­bil­i­ties to pro­vide the automa­tion func­tions you are look­ing for. With our soft­ware core iGComms any device can be as smart as you want it to be.