This thesis investigates mechanisms for energy balancing in an alternate arm converter (AAC) using detailed real-time and non-real-time electromagnetic transient (EMT) models. A method for regulating submodule capacitor ...

In high voltage direct current (HVDC) electric power systems, live-line maintenance methods, using fibreglass reinforced plastic (FRP) tools, are being applied to enhance their reliability and avoid costly outages. The ...

This thesis attempts to investigate the performance of various reactive power compensation devices, examine the mechanism of reactive power compensation for HVDC systems, and develop guidelines for the design of reactive ...

This research attempts to quantify the complex interactions between HVDC transmission schemes in a multi-infeed configuration, particularly with regard to the voltage interactions and the commutation failure phenomena. The ...

This Ph.D. thesis proposes an approach to classify faults that commonly occur in a High Voltage Direct Current (HVDC) power system. These faults are distributed throughout the entire HVDC system. The most recently published ...

The current technology used for location of permanent faults in high voltage direct current (HVDC) transmission lines and cables is based on the travelling-wave principle. This technology has served well for the conventional ...

Different HVDC grid types and the respective protection options are discussed. An earthed bi-pole HVDC grid was modeled in PSCAD, and using simulation results, the necessity of di/dt limiting inductors to contain the rise ...

This thesis presents a comprehensive study of a class of modular multilevel converters (MMCs) namely hybrid cascaded MMCs. These converters have topological dc-fault blocking capability and are suitable for large-scale, ...

The Phase-Locked Loop (PLL) plays a key role in HVdc systems. Recently, a new type of PLL called the Impedance-Compensated Phase-Locked Loop (IC-PLL) was introduced to compensate for the voltage drop across the ac network's ...