Electricity Transmission plays an imperative role in smooth provision of power to the consumers. High voltage direct current (HVDC) system has a lead over high alternate (HVAC) various aspects. As DC transmissions lines transmit electricity long distance, it is crucial find malfunctioning part line case faults occurrence. In this work, decision-making based unmanned aerial vehicle (UAV) control...

Southern Africa has suffered from multiple power disruptions in the past decade due to inadequate electrical generation capacity, as well load developments locations that were not suitably planned for. African countries are able have reliable, sustainable, and efficient grids. The use of interconnections for exchange power, especially long-distance transmission networks, is important. Installin...

the ultimate goal of power system operation and planning is to increase power system reliability which enforces interconnected operation of power system. as a result of power system interconnection, the inter-area oscillation under different disturbances may cause power system partial or total blackout. dc-segmentation of interconnected power systems is a solution in which the topology of the n...

The principle of the traveling wave based differential protection for bipolar HVDC transmission lines is proposed in the paper. Unlike the traditional current differential protection, the quantity of current is replaced by the quantity of the traveling wave for comparison. The traveling wave at the remote end is transferred to the local end for comparison to the local traveling wave. For the bi...

High-voltage direct current (HVDC) lines with line-commutated converter (LCC) are being increasingly employed to transmit bulk wind power over long distance. However, this may cause the sub-synchronous torsional interaction (SSTI) between the wind farms and the LCC-HVDC system. The SSTI characteristics of wind farms with fixed-speed induction generator (FSIG) wind turbines connected to LCC-HVDC...

ower transformers and steam turbines were the key drivers in the development of the AC power system paradigm at the dawn of the 20th century, characterized by huge synchronous generators feeding millions of passive loads through large interconnected systems, all of them supervised and controlled from a centralized energy management system (EMS). In the same way, thyristor valves and IGBTs, intr...

In the field of power electronics applications, advances in high voltage semiconductor devices have led specifically over the past few decades to tremendous improvements in terms of power handling capability and control. We focus in this paper on the recent developments with regard to optimizing the power semiconductor for the solid state HVDC breaker for HVDC grid applications. One of the trad...

Real-time simulation of a three-terminal high-voltage directcurrent (HVDC) grid connected to a doubly-fed induction generator (DFIG) based wind farm has been presented in this paper. A recently invented control strategy, known as powersynchronization control, is applied for the integration of the wind farm to the HVDC grid. The dynamic performance study of the system under normal wind power flu...

Abstract The extensive growth of large-scale flexible high voltage direct current (HVDC) transmission systems compromises the strength alternating (AC) power grid. Sub-synchronous oscillations will likely arise within such HVDC systems, which would significantly threaten grand electric system’s stable operation. A current-type enhanced virtual inertia control is proposed to suppress sub-synchro...

In the field of power electronics applications, advances in high voltage semiconductor devices have led specifically over the past few decades to tremendous improvements in terms of power handling capability and control. We focus in this paper on the recent developments with regard to optimizing the power semiconductor for the solid state HVDC breaker for HVDC grid applications. One of the trad...