Dänemark, Deutschland – Transformatoren – Supplier qualification system for HVDC Converter substations

Energinet and 50 Hertz intends to establish a Supplier Qualification System (“SQS”) for the procurement of HVDC converters, HVDC- and HVAC-substations in connection to the converters. The SQS is mainly intended for interconnector and offshore wind energy related projects such as the Bornholm Energy Island project. In the following, the requirements for a typical project are outlined. Deviations may, however, occur during the lifespan of the SQS. The scope of works of the supplier may cover development, design, engineering, relevant studies and reports, procurement, manufacturing, packaging, transportation, delivery, construction, installation, testing, commissioning, maintenance and documentation of HVDC and HVAC installations. HVDC installations may include: 1. The offshore and/or onshore converters (together ‘the Converters’) for the HVDC Substations and in particular: a. the primary systems b. the secondary systems including black start diesel generators The HVDC substations should 1. be based on VSC-MMC technology, using MMC Building Blocks in a half-bridge arrangement. 2. be arranged as a bipolar system with Dedicated Metallic Return (DMR) 3. have a transmission capacity range from approximately 1,2 to 2 GW 4. have the capability to absorb or generate reactive power independently from the active power (as further specified in each tender) 5. be rated for a DC voltage level of ±525 kV The HVDC offshore converter stations may, amongst other things, include a DC switchyard (the offshore DC switchyard) that: In the following, the requirements for a typical project are outlined. Deviations may, however, occur during the lifespan of the SQS. The scope of works of the supplier may cover development, design, engineering, relevant studies and reports, procurement, manufacturing, packaging, transportation, delivery, construction, installation, testing, commissioning, maintenance and documentation of HVDC and HVAC installations. HVDC station installations may include: 1.