<span lang="EN-US">The proposed scheme is employed for the efficient operation of a DC-DC-based buck converter. This protection shows optimal placement varistor in power electronics converter side under different surge conditions. Advanced varistors have excellent electrical material properties and electrothermal behavior enhancement absorption capability. Varistors been examined widely l...

As non-controllable power sources, photovoltaics (PV) can create overvoltage in low voltage (LV) distribution feeders during periods of high generation and low load. This is usually prevented passively by limiting the penetration level of PV to very conservative values, even if the critical periods rarely occur. Alternatively, one can use active power curtailment (APC) techniques, reducing the ...

This paper studies the effect of new suggested ferroresonance limiter on controlling ferroresonance oscillations in the power transformer. It is expected that this limiter generally can control the ferroresonance. For studying these phenomena, at first ferroresonance is introduced and a general modeling approach is given. A simple case of ferroresonance in a three phase transformer is used to i...

The increasing usage of hybrid cable-overhead lines raises concerns over the protection short cable sections against lightning surges, because voltage build-up in section. To set a simulation model phenomenon is time consuming, with numerous parameters impacting overvoltage. This paper (Part I) presents formulas able to perform fast estimation maximum overvoltage at line transition point event ...

Self-organization of filaments in dielectric-barrier discharges (DBDs) probably has many origins. However, the dominant cause is proposed to be the accumulation of charge on the surfaces of the bounding dielectrics that reinforces successive discharge pulses to occur at the same locations. A secondary cause is the electrostatic repulsion of individual plasma filaments. Self-organization typical...

Present-day small hydropower plants (SHPs) have a large development potential because of the increasing interest in renewable resources and distributed energy generation, therefore, there are many SHPs in places of China where are rich in water resources. However, it has caused overvoltages in the distribution network, and which is even worse for the switching overvoltage such as isolated netwo...