Project Reference San Bernardino Road Tunnel 50 Kv and 16 Kv Installations, Secondary Engineering

Grid Automation Systems Project reference San Bernardino road tunnel 50 kV and 16 kV installations, secondary engineering

In 1967 the 6.6 kilometer long San Bernardino tunnel was The power for the San Bernardino tunnel and all associated opened in the canton of Grisons (Graubünden) between crossways, escape tunnels and ancillary structures is supplied the villages of Hinterrhein and San Bernardino. For the by the feeds from the 50 kV network of the KHR (Kraftwerke first time this tunnel provided a year-round connection Hinterrhein AG) as well as from the 50kV network of the OIM between the southern Grisons valleys of Misox and (Officine Idroelettriche di Mesolcina SA). Calanca with Chur. As part of the national road N 13 - A 13 today - it also connects Eastern Switzerland to the ABB solution southern side of the Alps and Ticino and is also used, The feeds from the networks of the power stations involved among other things, as the alternative route for the are designed in such a way that two independent connections Gotthard tunnel. lead to the two independent substations. These connections enable the supply of the transformer substations for the tunnel supply from both sides of the tunnel. Project Due to the age of the San Bernardino tunnel and the sharp The network control centers of the network operators KHR increase in traffic volume, the renovation of the tunnel was and OIM are connected to the respective systems via gate- inevitable. Among other things, the renovation of the electro- ways. Thus, all systems can be remotely controlled and mechanical equipment and the power supply was also plan- monitored. Additional „remote workstations“ at KHR and OIM ned, wherein the secondary technology was also considered. enable the operating personnel to remotely access system For the maintenance of the tunnel operation, the following data, SOE recorder data files and configuration data of all indoor installations of the substations listed below have been devices. replaced: The part of ABB includes two station control and instrumen- −− Hinterrhein substation tation systems based on MicroSCADA Pro (respectively for −− Aria power station the KHR northern network and the OIM southern network), as −− Sasso power station well as control and protection devices from the Relion fami- −− San Bernardino substation ly. REx670 devices were installed at the gas-insulated 50kV for thenetworkoperatoratanytime. mented, sothatapicture oftheoverallsituationisavailable network, transformerstationsofthesouthrampwere imple On thecontrol andinstrumentation systemofthesouthern mentation systemofHinterrhein. San Bernardino substationonthestationcontrol andinstru the 16kVsystempartare recorded andpresented from the no substation.Asrequested, theAriaandSassosystems ween thesystemsofHinterrheinsubstationandSanBernardi operation canbeensured through theexchangeofdatabet owners andplantoperatorsduringtheproject phase.Safe exchange informationthathavebeenprecisely definedbythe The independentstationcontrol andinstrumentationsystems REx670 devices. same timeprotected mainly byREF630devicesandpartly switchgear. The medium-voltagepartiscontrolled andatthe Transformer ramp stationsoftheSouthern Hinterrhein substation - - - - manufacturers. integration ofIEC61850-compliantproducts from different device tothefielddevice.Thisadditionallysupportsentire and ontheotherhorizontalcommunicationfrom field field deviceandstationcontrol andinstrumentationsystem, comprises ononesidetheverticalcommunicationbetween long-term stability. TheIEC61850-compliantcommunication system upgrades,maintainability, extensibility, andinthe system, re-usability oftheconfigurationsettingsinIED-and great benefitliesintheconsistencyofdataforentire of thestationwere designedonthebasisofIEC61850.The The instrumentationandcontrol aswellprotection systems complete satisfactionofthecustomer. Office ofGrisons,tookplace attheendofAugust2012to The finalhandovertoourcustomers,theCivilEngineering Customer feedback − ABB scopeofsupply south network,thesestartedinApril2011. networkbeganinFebruary2011.Forthefor thenorthern The deliveryofthecabinetsandsubsequentcommissioning www.abb.com/substationautomation E-mail: [email protected] Fax: Phone: CH-5400 Baden,Schweiz Bruggerstrasse 72 Power GridsDivision ABB SwitzerlandAG For more information,pleasecontact: San Bernardinosubstation − devices Supply ofprotection and control cabinetswithRelion +41 585855577 +41 585857744