Khizar Ali

Annual Testing - 500 kV Sub Station, NTDC, Sheikh Muhammadi, Peshawar
• Participated in the annual testing activities at the 500 kV NTDC Sheikh Muhammadi Grid Station.
• Tested multiple power transformers (450 MVA, 250 MVA, and 10 MVA units) including IR, C&DF, and TTR.
• Performed Circuit Breaker contact resistance and timing tests for 500 kV, 220 kV, 132kV bays.
• Conducted Relay Testing, including protection scheme verification.
• Performed CT Capacitance & Dissipation Factor (C&DF) testing.
Testing & Commissioning Experience - PESCO / NTDC
• Assisted in testing and commissioning of the 132 kV Substation Bamkhel, Swabi.
• Performed Circuit Breaker (CB) testing, including contact resistance and timing tests.
• Conducted Current Transformer (CT) and Potential Transformer (PT) testing.
• Executed complete testing of 20 MVA (132 kV / 11 kV) Power Transformer, including IR, Capacitance & Dissipation Factor
(C&DF), and Turns Ratio (TTR) tests.
• Performed earth mesh and grounding system testing to ensure effective fault current dissipation and substation safety
compliance.

• Gained practical exposure to the operation and maintenance of extra high voltage (EHV) substations.
• Observed and understood the functioning of power transformers, circuit breakers, isolators, and busbar systems.
• Assisted in control room operations, including monitoring of voltage levels, frequency, and load management.
• Learned about grid operations, including load dispatch, fault detection, and system protection schemes.
• Studied SCADA systems for real-time monitoring and control of substation equipment.
• Gained knowledge of protection relays, fault analysis, and emergency handling procedures.
• Observed generator synchronization processes and power integration with the national grid.
• Followed NTDC safety protocols and industry standards during technical observations

Gained practical exposure to the working of a large-scale hydroelectric power plant.
• Observed and understood the operation of turbines, generators, and excitation systems.
• Assisted in control room operations including monitoring of voltage, frequency, and load balancing.
• Learned about generator synchronization and integration with the national grid.
• Studied protective relaying, circuit breakers, and fault isolation mechanisms used in hydro plants.
• Analyzed power production, efficiency optimization, and maintenance procedures.
• Developed awareness of environmental impacts and benefits of renewable energy.
• Followed standard safety protocols during plant tours and technical observations.

• Understanding the protection schemes used in substations, including overcurrent, differential, and earth fault protection.
• Observing the installation, testing, and maintenance of protective relays and CT/PT systems.
• Learning about SCADA systems and their integration with modern grid operations.
• Participating in field visits to 132 KV grid stations to understand transformer protection and busbar schemes.
• Assisting in fault analysis and relay coordination procedures to ensure system reliability.
• Familiarizing with testing equipment such as relay test kits, megger, and insulation testers.