Aus­tri­a’s motor­way com­pa­ny pre­pares to fight pow­er out­ages with hybrid microgrid

The Aus­tri­an motor­way com­pa­ny ASFINAG with its long-stand­ing ser­vice part­ner and gen­er­al con­trac­tor K.E.M. MONTAGE and the Ger­man Micro­grid spe­cial­ists from DHYBRID have joint­ly imple­ment­ed a for­ward-look­ing pow­er sup­ply for one of Aus­tri­a’s most impor­tant traf­fic man­age­ment cen­tres and motor­way mas­ters (ABM). For this pur­pose, a so-called “hybrid micro­grid” has been cre­at­ed on the grounds of the ABM Kla­gen­furt. It sup­plies the entire site with renew­able ener­gy with­out inter­rup­tion, even in the event of a fail­ure of the pub­lic grid. The ABM Kla­gen­furt is respon­si­ble, among oth­er things, for the mon­i­tor­ing and main­te­nance of var­i­ous Alpine tun­nels and the busy Tauern motorway.

Project is part of ASFI­NAG’s sus­tain­abil­i­ty strategy

The sup­ply of solar ener­gy to the Auto­bah­n­meis­terei in Kla­gen­furt is part of the ASFINAG project to grad­u­al­ly sup­ply all of the com­pa­ny’s sites with green elec­tric­i­ty. The ener­gy stor­age sys­tem ensures that solar ener­gy gen­er­at­ed dur­ing the day can also be used at night or in the event of a pow­er fail­ure. Until now, this unin­ter­rupt­ible pow­er sup­ply was only pos­si­ble with a high tech­ni­cal effort. It is pre­cise­ly this that ensures that tun­nels and motor­way sec­tions can be mon­i­tored seam­less­ly even in the event of a fail­ure of the pub­lic elec­tric­i­ty grid.

“The Micro­grid of ABM Kla­gen­furt shows that renew­able ener­gies and a reli­able ener­gy sup­ply go hand in hand if the tech­no­log­i­cal course is set cor­rect­ly. This means that the new ener­gy sys­tem is not only a bea­con project, but also a real plus for the safe­ty of motorists,” says Christoph Lang
Head of Renew­able Ener­gy & E‑Mobility at K.E.M. MONTAGE, the gen­er­al con­trac­tor for the con­struc­tion of the new elec­tric­i­ty system.

Secure ener­gy sup­ply with the hybrid island network

“hybrid island net­works” or “hybrid micro­grids” are local elec­tric­i­ty net­works con­nect­ed to the pub­lic elec­tric­i­ty grid. How­ev­er, if nec­es­sary, they can sep­a­rate them­selves and sup­ply them­selves, usu­al­ly with the help of a bat­tery stor­age sys­tem and spe­cial electronics.

The hybrid island net­work of ABM Kla­gen­furt com­bines a 220 kWp pho­to­volta­ic sys­tem and a 522 kWh lithi­um-ion pow­er stor­age sys­tem. DHY­BRID’s “Uni­ver­sal Pow­er Plat­form” (UPP) ener­gy man­age­ment sys­tem con­trols and mon­i­tors all para­me­ters of the ener­gy sup­ply. If the pub­lic grid fails, the bat­tery stor­age sys­tem seam­less­ly takes over the sup­ply of the island net­work using the UPP.

When the pub­lic grid returns, the UPP mea­sures the nec­es­sary para­me­ters and ensures unin­ter­rupt­ed resyn­chro­niza­tion into grid par­al­lel oper­a­tion. In bat­tery oper­a­tion, upP also reg­u­lates the load man­age­ment of three con­nect­ed charg­ing sta­tions for ASFINAG elec­tric vehi­cles with up to 70 kW of pow­er. If the capac­i­ty of the ener­gy stor­age sys­tem is exhaust­ed in the event of a per­sis­tent pow­er fail­ure, the UPP switch­es on a back-up diesel gen­er­a­tor ful­ly automatically.

DHYBRID orig­i­nal­ly devel­oped its Micro­grid tech­nol­o­gy for use in non-Euro­pean coun­tries, where, for exam­ple, there is often no reli­able and sta­ble ener­gy sup­ply on islands. How­ev­er, DHYBRID Micro­grids is increas­ing­ly imple­ment­ing in Europe due to the expan­sion of renew­able ener­gies and the increas­ing demand for tai­lor-made ener­gy stor­age solutions.