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Reconstructions

"Augstsprieguma tikls" AS Development policy has been developed on the basis of the transmission network long-term development. Big financial funds amounting for the improvement and development of the Transmission network in Latvia have been invested over the last years, however, the age of the installed equipment in the substations keeps increasing. In order to deal with the aging equipment of the Transmission network, the Development policy provide reconstruction paces achieved in the last years, and not reduce the financial funds, invested in the reconstructions of the objects.

2015

  • Implementation of the Kurzeme Ring Project has been continued – the reconstruction of the 110 kV substation switchyard “Talsi” has been commenced, as well as construction design for increasing the capacity of substations “Tume”, “Tukums”, “Dzintari”, “Sloka” and “Ķemeri”. Performance of the measures for recording the current condition and monitoring has been started in the territory of the underground water containing sulphides in Ķemeri National Park has been started.
  • Reconstruction of the 330 kV substation "Viskaļi” switchyard, as well as reconstruction of the 110 kV switchyard of the 110 kV substation “Dagda” and expansion of the 110 kV switchyard of the substation “Skulte” has been completed.
  • According distribution system operator “Sadales tikls” AS request, the allowed connection load has been increased at the substations „Bolderāja II” and „Salaspils" .
  • Transformers have been replaced at the substations “Sloka”, “Ieriķi”, “Aizpute”, “Džukste” (TNo.1) and “Kūmas” (TNo.2).
  • Replacement of the 110 kV cable line LNo.203 “AndrejsalaHanza” by utilising plastic insulation cables has been started.
  • Reconstruction of the 110 kV substations „Salamandra” and „Imanta” switchyards was continued and construction design has been started for constructing the new 110 kV substation “Skanste” and reconstruction of the 110 kV switchyards of the 110 kV substations “Ventspils”, “Viskaļi” and “Aloja”.
  • The environmental impact study procedure of construction of the third interconnection Estonia-Latvia has been continued.

2014

  • Construction of 2-nd stage of Kurzeme Ring Project – new 330/110kV transmission line between substations Grobina and Ventspils – has been completed.
  • Reconstructions of 110kV substations switchyards „Bolderāja I”, „Olaine” and „Gulbene” have been completed.
  • According distribution system operator “Sadales tikls” AS request, the 110 kV transformers in the substations „Cēsis", „Vecmīlgrāvis”, „Priedaine”, „Krasts” and „Bolderāja I” (TNr.2) have been changed, as well as TNr.1 and TNr.2 in substation „Brocēni110" and transformer TNr.1 in the substation „Iecava".
  • The technical project development of substation„Skulte” 110kV switchyard expanding has been started, as well as 110kV cable transmission line LNr.203 „AndrejsalaHanza” changing with plastic insulation cable.
  • Reconstruction of Plavinas hydro power plant transmission leading has been completed.
  • Reconstruction of substation “Viskali” 330kV switchyard has been started.
  • Reconstruction of 110kV substations „Salamandra”, „Imanta” and „Dagda” switchyards has been started.
  • Environmental Impact assessment procedure for third Estonian-Latvian 330kV interconnection has been started in Latvia.

2013

  • Construction of 1-st stage of Kurzeme Ring Project – 330kV cable line between substations RigaCHP1 and Imanta – has been completed. The cable line was connected 330kV electrical ring in Riga town, which will significantly improve security of power supply in Riga city.
  • Construction of substation “Ventspils” 330kV switchyard has been completed.
  • Substation “Grobina” 330kV switchyard extension has been completed.
  • Autotransformer ATNr.1 reconstruction in the substation “Broceni330” has been completed.
  • Construction of  new 110kV substation “Mežaparks” has been completed.
  • According distribution system operator “Sadales tikls” AS request, the 110 kV transformers in the substations “Madona”, “Tēraudlietuve”, “Aloja” and “Jāņciems” have been replaced by transformers with higher installed capacity.
  • The construction of 330/110kV transmission leading to the RigaCHP2 substation has been completed.
  • The technical project development of 110kV substations “Salamandra”, “Dagda” and “Imanta” has been continued.
  • Reconstruction of Plavinas hydro power plant transmission leading has been continued.
  • Reconstruction of substation “Gulbene” 110kV switchyard and substation “Olaine” 110kV switchyard has been started.

2012

  • Reconstruction of the substation “Viskali” 330kV switchyard has been started.
  • Reconstruction of 110kV substations switchyards “Olaine”, “Imanta” and “Gulbene”have been started.
  • Construction of the new 110 kV substation “Mežaparks” has been started.
  • 110 kV transformers in the substations “Dzintari”, “Ķekava”, “Smiltene” (TNr.2) and “Ropaži” (TNr.2) have been replaced by new transformers.
  • Construction of the new 110/20 kV substation “Skulte” has been completed.
  • Reconstruction of 330kV substations “Imanta” and “RigaCHP1” switchyards has been completed.
  • The 330kV transmission system project “Kurzeme Ring” construction has been continued: 330kV transmission line stage “Grobina-Ventspils” has been started, Daugava river crossing for 110kV cable line Nr.219 and 330kV cable line “RigaCHP1-Imanta” has been completed.
  • Construction of the new 110/20 kV substation „Pope” has been completed.

2011

  • Reconstruction of 110kV substation “Valmiera” switchyard has been completed.
  • According distribution system operator “Sadales tikls” AS request, two 110 kV transformers in the substation “RigaCHP2” have been replaced by transformers with higher installed capacity. Construction of the new 110/20 kV substation “Skulte” has been started.
  • The 330kV transmission line “Kurzeme Ring” 3-rd stage (Venstspils-Tume-Imanta) realisation has been started: the Environmental Impact assesment (EIA) and right of way (RoW) study for transmission line route “Dundaga-Tume” and EIA study for route “Tume-Rīga” has been completed.
  • The 330kV transmission line “Kurzeme Ring” 1-st stage (RigaCHP1Imanta) construction has been continued: cable line technical project design has been finished and cable line construction is started.
  • Construction works for the new power plant “RigaCHP2” connection to the transmission network have been started, according to electricity trader “Latvenergo” AS technical requirements.
  • New wind park “Golovigi” connection line to the transmission network and new 110/20 kV substation has been constructed.
  • The overhead transmission line LNr.215/216 reconstruction into the cable line has been finished for the stage from substation “RigaCHP1” until the line pylon Nr.6.

2010

  • Reconstruction of substation “Valmiera” 110 kV switchyard has been continued.
  • According the “Sadales tikls” AS request, the 110 kV transformers in the substations “Bišuciems” (1 unit), “Torņakalns” (2 units), “Imanta” (2 units) and “Talsi” (1 unit) have been replaced with transformers with higher installed capacity.
  • The 330kV transmission line “Kurzeme Ring” 2-nd stage (Grobina-Venstspils) realisation has been started: the Environmental Impact assesment (EIA) and right of way study (RoW) for transmission line route “Grobina-Dundaga” has been developed.
  • The 330kV transmission line “Kurzeme Ring” 1-st stage (RigaCHP1Imanta) realisation has been continued: the technical Project design for route “ImantaDaugava river” has been developed, and cable line construction under the Daugava river has been started.
  • The 110kV line LNr.219 (the sub-project of the “Kurzeme Ring”) reconstruction realisation has been started (the cable line instead of overhead line).
  • The 110kV double circuit overhead line LNr.215/216 reconstruction has been started (from substation “RigaCHP1” until pylon Nr.6 cable line will be installed instead of overhead line).

2009

  • Existing substations “Liepaja” and “Grobina” enlargement has been completed, new substation “Liepajas metalurgs” has been constructed, new 110kV cable line “LiepajaLiepajas metalurgs” has been constructed.
  • Construction of the new 110/10 kV substation “Matiss” has been completed, according “Sadales tīkls” AS Riga load increasing request.
  • Substation “Valmiera” 330 kV and 110 kV switchyards reconstruction has been continued.
  • According the “Sadales tikls” AS request, the 110 kV transformers in the substations “Liepaja” (3 units), “Carnikava” (2 units), “Purvciems” (2 units), “Bisuciems” (1 unit), “Bastejkalns” (2 units) and “Marupe” (1 unit) have been replaced by transformers with higher installed capacity.
  • The 330kV transmission line “Kurzeme Ring” 1-st stage (“RigaCHP1Imanta”) realisation has been started: the technical Project design for route „ImantaDaugava river” has been completed.