Клиент:"Lukoil Neftochim Burgas" JSC

“Techenergo” JSC completed the contract “Setup of longitudinal differential protections” in “Lukoil Neftochim Burgas” JSC. The activities carried out allow fast and reliable exchange of large amounts of information between protections via fiber optics. When performing the contract “Techenergo” JSC resolved a number of complex problems.

Specific activities that our specialists carried out in this project were:

  • Calculation of setup values for digital relay protections;
  • Development of Relay Maps;
  • Setup of the longitudinal differential protections;
  • Setup of interlocks and interlocking functions – using the particular digital relay protections;
  • Specific processing of electrical circuits (Secondary commutation) of Package Switchgears 6.3 kV and 15 kV;
  • Functional tests of the digital relay protections;
  • Tests under load.

The longitudinal differential protections were commissioned in December 2013.

During the same period, “Techenergo” JSC completed also setup and commissioning of bus-bar differential protections. The specifics of the order were the necessity to extend the existing protections. For this purpose “Techenergo” JSC commissioned two new relay modules for protection of the bus-bar system of the new power transformers – 110/15 kV. The project is related to the addition of these modules in the central module of protection as well. “Techenergo” JSC completed the following types of activities for this project:

  • Calculation of setup values for digital relay protections (coordinated with the Electricity System Operator);
  • Development of Relay Maps for the needs of “Lukoil Neftochim Burgas” JSC;
  • Setup of the bus-bar differential protections and adding of the new modules to the existing bus-bar differential protections;
  • Setup of interlocks and interlocking functions – using the particular digital relay protections;
  • Functional tests of the digital relay protections;
  • Tests under load.