Rehabilitation of 400 kV Switchyard in Maritsa East II TPP

Assignor:
NEC EAD Trafoelektroinvest State Enterprise

Location:
Kovachevo Village, Radnevo Municipality

Assigned: 2005 / Completed: 2005

Project description

The site is a 400 KV Substation which is reconstructed by substitution of the existing electrical equipment, and by rehabilitation of the auxiliary power supply switchgear. Order was awarded to EL KONTROL, after winning a public procurement announced by NEK EAD Trafoelektroinvest Enterprise - Sofia.

Activities

  • Substitution of 400 kV equipment - dismantle of existing and installation of new equipment: circuit breakers, knife disconnect switches, current transformers, voltage transformers, surge arresters, support insulators;
  • Substitution of control cabinets;
  • Laying and connection of control cables
  • Rehabilitation of 220 kV DС auxiliary power supply switchgear in control building of Maritsa East II Substation;
  • Diesel-generator installation;
  • Reconstruction of 380 V АС and 220 V DС auxiliary power supply switchgears in 400 kV, 220 kV and 110 kV switchyards;
  • Control tests and commissioning of the installed equipment.

Other

A special feature about realization of this Project are the very short deadlines for completion of the assigned activities. The site was completed in strict compliance with the agreed time-schedules, and the 400 kV switchyard was put into operation in December, 2005.

 

 

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