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HVDC Technology – Part 2 Author: Velimir Lackovic This course is the second part of a two part course on HVDC Technology. The main objective of this course is to thoroughly present the effects of harmonics in AC power systems, harmonic filter design, DC harmonic concepts and calculations, HVDC power and frequency control schemes. This... Learn More

HVDC Technology – Part 1 Author: Velimir Lackovic This course is the first part of a two part course on HVDC Technology. This course thoroughly presents HVDC concepts, available arrangements, operation and control issues. The first part of this course presents basic configurations, substation arrangements, converter operation and control. Electricity is produced as an alternating... Learn More

High Voltage Busbar Protection Author: Velimir Lackovic A well-designed electrical protection system should cover all components against possible faults. Line protection concepts, such as overcurrent and distance arrangements, satisfy this requirement, even though short circuits in the busbar zone are cleared following a time delay. However, if unit protection is used for feeders and plants,... Learn More

Fundamentals of Measurement Transducers and Synchronizers Author: Velimir Lackovic The precise measurement of voltage, current or other power system parameters is a requirement for any automation and control process, ranging from automatic closed-loop control to data sampling for statistical needs. Measurement of these parameters can be achieved in a variety of ways, including the application... Learn More

AC Motor Protection Author: Velimir Lackovic AC motors are available in a wide range of configurations and features which allows them to be used in numerous applications. AC motors need to be protected but determining the method of protection is usually independent of the motor and load type. The selection process is based on the... Learn More