{"id":6689,"date":"2026-06-19T12:01:54","date_gmt":"2026-06-19T10:01:54","guid":{"rendered":"https:\/\/symetrium.com.pl\/high-voltage-installations-and-primary-substations\/"},"modified":"2026-06-30T09:28:10","modified_gmt":"2026-06-30T07:28:10","slug":"high-voltage-installations-and-primary-substations","status":"publish","type":"page","link":"https:\/\/symetrium.com.pl\/en\/high-voltage-installations-and-primary-substations\/","title":{"rendered":"High-Voltage Installations and Primary Substations"},"content":{"rendered":"\t\t
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HV Installations \/ Primary Substations<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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HV Installations \/ Primary Substations Comprehensive Delivery of 110 kV \/ MV<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Substations High-voltage (HV) installations constitute a critical element of the national power system. A primary substation (GPZ)<\/strong> is a strategic substation where electrical energy is transformed from the 110 kV level to medium voltage (MV) and subsequently distributed to industrial, municipal, and infrastructure consumers.<\/p>\n

Symetrium delivers projects in the construction, modernization, and expansion of 110 kV\/MV substations, ensuring comprehensive investment management \u2013 from concept, design, and execution to commissioning and maintenance support.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t

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Scope of Offer<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Our Competencies
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Design and Project Preparation<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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We offer full design support for high-voltage power investments:<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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  • development of technical concepts and pre-investment analyses<\/li>\n
  • building and detailed designs of 110 kV\/MV substations<\/li>\n
  • designs for outdoor and indoor gas-insulated switchgear (GIS) substations<\/li>\n
  • documentation for power transformers<\/li>\n
  • arrangements and approvals with DSOs \/ TSO (PSE) as well as formal and legal support<\/li>\n
  • interdisciplinary coordination (electrical, telecommunications, civil\/structural)<\/li>\n<\/ul>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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    We execute investments under the “Projektuj i Buduj” formula.<\/strong><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t

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    Construction and Expansion of 110 kV \/ MV Substations<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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    The scope of construction and installation works includes:<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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    • construction of new primary substations<\/li>\n
    • expansion of existing facilities (adding 110 kV \/ MV bays)<\/li>\n
    • installation and replacement of power transformers<\/li>\n
    • installation of 110 kV switchgear (AIS \/ GIS)<\/li>\n
    • construction of MV switchgear and auxiliary power systems<\/li>\n
    • execution of earthing and lightning protection systems<\/li>\n
    • delivery of cabling and grid connection infrastructure<\/li>\n<\/ul>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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      We ensure coordination of all engineering disciplines as well as supervision over the schedule and work safety.<\/strong><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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      Automation, Protection, and Telecontrol Systems\n\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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      Modern power substations require advanced automation and diagnostic systems. In this area, we offer: <\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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      • installation and configuration of power system protection (PSP) devices<\/li>\n \t
      • substation automation systems (SAS)<\/li>\n \t
      • integration with SCADA and telecontrol systems<\/li>\n \t
      • disturbance recording and power quality monitoring systems<\/li>\n \t
      • implementation of communication standards (IEC 61850)<\/li>\n \t
      • FAT\/SAT testing and facility commissioning<\/li>\n<\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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        We integrate power systems with energy management systems (EMS) and monitoring solutions.<\/strong><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t

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        Modernizations and Reliability Enhancement\n\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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        The modernization of primary substations allows for an increase in regional energy security and the optimization of operational costs. We offer comprehensive substation retrofits aimed at: <\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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        • increasing grid connection capacity<\/li>\n
        • improving power supply reliability<\/li>\n
        • alignment with current standards and operators’ requirements<\/li>\n
        • integrating renewable energy sources (RES) with 110 kV\/MV infrastructure<\/li>\n
        • replacing obsolete protection systems and apparatus<\/li>\n<\/ul>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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          Service, Testing, and Operations Maintenance<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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          We provide operational support:<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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          • periodic inspections and protective measurements<\/li>\n
          • diagnostics of power transformers<\/li>\n
          • testing of protection systems and automation circuits<\/li>\n
          • support during UDT (Office of Technical Inspection) and DSO acceptance procedures<\/li>\n
          • rapid response maintenance interventions<\/li>\n<\/ul>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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            \n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"symetrium-przeglady-serwis\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

            HV Installations \/ Primary Substations HV Installations \/ Primary Substations Comprehensive Delivery of 110 kV \/ MV Substations High-voltage (HV) installations constitute a critical element of the national power system. A primary substation (GPZ) is a strategic substation where electrical energy is transformed from the 110 kV level to medium voltage (MV) and subsequently distributed […]<\/p>\n","protected":false},"author":6,"featured_media":6656,"parent":0,"menu_order":99,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-6689","page","type-page","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/symetrium.com.pl\/en\/wp-json\/wp\/v2\/pages\/6689","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/symetrium.com.pl\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/symetrium.com.pl\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/symetrium.com.pl\/en\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/symetrium.com.pl\/en\/wp-json\/wp\/v2\/comments?post=6689"}],"version-history":[{"count":1,"href":"https:\/\/symetrium.com.pl\/en\/wp-json\/wp\/v2\/pages\/6689\/revisions"}],"predecessor-version":[{"id":6690,"href":"https:\/\/symetrium.com.pl\/en\/wp-json\/wp\/v2\/pages\/6689\/revisions\/6690"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/symetrium.com.pl\/en\/wp-json\/wp\/v2\/media\/6656"}],"wp:attachment":[{"href":"https:\/\/symetrium.com.pl\/en\/wp-json\/wp\/v2\/media?parent=6689"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}