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Third Party Audit of QAPCO-QVC-QATOFIN Electrical Network, Qatar

In 2016, Qatar Petrochemical Company Plant in Mesaieed [QAPCO] network experienced a power failure. The fault originated from the interconnected neighboring company (QVC) with the flashover of a transformer terminal and resulted in cascading power failure in QAPCO electrical network with the damage of five transformers (bushing flashover & winding damages). The power failure is a repeated incident for QAPCO electrical network and similar incidents happened in 2013 & 2014 with the fault originated from the QVC electrical network.

In order to eliminate the recurrence of such fault incidents and further review the network configuration/studies, QAPCO engaged Energoprojekt ENTEL to perform network study and analysis and to conduct an audit on QAPCO-QVC-QATOFIN Electrical Networks. ENTEL conducted the audit based on the existing network configuration, previous studies and subsequent modifications of QAPCO-QVC-QATOFIN power system. As part of the audit, EPE reviewed the network configuration/installations, verified & validated previous network studies, investigated the cause of repeated network failures and verified the stability of the electrical network under normal & abnormal/fault conditions.

In addition to the detailed site survey conducted, the above described works included the following studies and analyses:

  • Gap Analyses
    • Insulation Coordination Study - Gap Analysis Report
    • Harmonic Study - Gap Analysis Report
    • Load Flow Study - Gap Analysis Report
    • Short Circuit Study - Gap Analysis Report
    • Motor Starting Study - Gap Analysis Report
    • Protection Coordination Study - Gap Analysis Report
    • Transient Stability Study - Gap Analysis Report
  • Network Fault Investigation
  • Network Configuration and Recommendations
  • Studies
    • Insulation Coordination Study
    • Harmonic Study
    • Load Flow Study
    • Short Circuit Study
    • Motor Starting Study
    • Protection Coordination Study
    • Transient Stability Study
  • Stability / Reliability Study Report
  • Final Recommendation Report

Services provided

  • Review of the existing QAPCO, QVC & QATOFIN electrical network installations & configurations;
  • Review the network fault preliminary investigation reports/records and further investigation;
  • Verification of the Existing Network Studies;
  • Performing of new Network Studies;
  • Review the stability & reliability of the networks;
  • Network configuration review for independent operation of QAPCO & QVC network;

Technical data

  • Insulation Coordination Study
  • Harmonic Study
  • Load Flow Study
  • Short Circuit Study
  • Motor Starting Study
  • Protection Coordination Study
  • Transient Stability Study
  • Network Fault Investigation
  • Stability / Reliability Study Report
  • Network Configuration and Recommendations

 

Client

Qatar Petrochemical Company (QAPCO)