Engineering Resources Center​
Explore a growing collection of technical videos, engineering articles, simulation studies, testing guides, and downloadable resources for power system and substation engineers
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Learn how a capacitor unit fuse failure impacts an MV capacitor bank, how protection functions detect the fault, and what…
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Explore transformer vector groups, winding connections, and phase displacement angles. See how each configuration is implemented and verified using MATLAB/Simulink…
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Transformers and Reactors Oil Breakdown Voltage (BDV) test demonstrating the standard 2.5 mm electrode gap. The test voltage is continuously…
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Learn how load transfer is performed between busbars in a Double Busbar Single Breaker scheme and what happens during a…
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What makes a shunt reactor core different from a transformer core? In this video, we compare their construction, air-gap design,…
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In this video, we explain the difference between 50N and 50G protection applied to shunt reactors. Learn how each function…
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Circuit Breaker Failure Protection (CBF) is a critical backup protection scheme that operates when a circuit breaker fails to clear…
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Discover how HVDC technology enables the interconnection of 50 Hz and 60 Hz power systems through a 1400 km transmission…
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Learn how a Point-on-Wave (POW) Controller optimizes capacitor bank energization by closing circuit breaker contacts at the ideal point on…
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Energizing a capacitor bank creates an inrush current that can be several times higher than the rated current. This video…
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Discover practical tips and expert tricks for performing Dynamic Resistance Measurements on OLTCs. Learn how to obtain reliable results, identify…
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What does the short circuit impedance percentage (%Z) on a transformer nameplate really mean, and why is it so important?…
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Can transformers with Dyn11 and Dyn5 vector groups operate in parallel? In this video, we explain the impact of phase…
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Understanding the correct current transformer (CT) connections in a zigzag grounding transformer is essential for accurate protection and fault monitoring.…
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A broken phase in a zigzag grounding transformer reduces the effectiveness of system grounding, causing unbalanced ground-fault currents and neutral…
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Controlled switching is an advanced power system technique used in overhead transmission lines to precisely operate circuit breakers at the…