This paper presents an optimum earthing system design for improving the lightning performance of a 500 kV transmission line its sustainable operation. The study includes interpretation soil profile and compares results between default new arrangements tower footing resistance impedance. An evaluation (TFR) impedance (Ri) before after improvement was carried out. Moreover, effects TFR Ri, also k...

The Sen Transformer (ST) provides an economical solution for power flow control and voltage regulation. However, fault analysis evaluation of the performance transmission protection system in presence a ST have not been investigated. Hence, short-circuit model using phase coordinate method is proposed this paper. Firstly, according to coupled-circuit model, nodal admittance matrix between sendi...

This paper presents the determination of insulation coordination for phase-to-ground switching over voltages by a practical method in which effect overvoltage waveshape, especially impact time to crest on strength is considered. work carried out world’s first 1200 kV transmission line modelling it PSCAD.

Ferroresonance is a nonlinear dynamic electrical phenomenon, which frequently occurs in a power system that comprises no-load saturable transformers, transmission lines (or cables) and single-phase switching with three-phase supply. Common characteristics of a nonlinear system are multiple equilibrium points, limit cycles, jump resonance and subharmonic generation. This paper presents an extens...

Selective harmonic elimination (SHE) is a suitable pulse-width modulation (PWM) technique for some applications of modular multilevel converters (MMC) with lower number semiconductor submodules (SM). However, SHE can make it difficult to control circulating currents in the MMC. Moreover, MMC vulnerable SM switch failures that reduce its output power magnitude and quality. This paper proposes fa...

<span lang="HR">Solar photovoltaic (PV) system becomes popular to generate the electricity in Asian region and helps reduce burden utility. The power converter plays crucial role interconnect with DC- grid. Traditional type DC-DC can able extract maximum from solar PV. However, most of applications, it often fails meet voltage level DC bus additional is required boosting p voltage. In ord...

This study presents an improved, communication-free Fault Ride-Through (FRT) strategy for type-3 and type-4 wind turbine integrated modular multilevel converter-based high-voltage direct current (MMC-HVDC) systems in offshore power plants (OWPPs). The research aims to enhance the reliability resilience of OWPPs by ensuring their connection with AC grids remains intact during after faults. Simul...