Ziyad Almajali

Ziyad Almajali
Mu’tah University · Electrical Engineering

Doctor of Engineering

About

10
Publications
331
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11
Citations

Publications

Publications (10)
Article
This paper presents a new method for faults classification of HVDC system by analyzing the currents and voltages of the system under the Zero-Direct-Quadrature (DQ0) coordinates using Lab color chromatic based monitoring approach. Repeated for several healthy and faulty scenarios in DC side and AC side as well, The DQ0 transformed signals are evalu...
Article
Full-text available
or successful transformer differential protection employment, correct discrimination between inrush current and fault current is essential. It is one of the main focuses of research and one of the main challenges for transformer protection. In this paper, a discrimination method based on utilizing chromatic monitoring of the box dimension algorithm...
Article
Full-text available
An approach is described in this work for detecting discomfort moments during electrical water heater daily usage. The approach employs chromatic analyzing sensors signals of electrical water heater systems for producing distinguishable mapping to characterize and identify selected discomfort moments. The preliminary results obtained indicate that...
Article
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In this research, the Grey Wolf Optimizer GWO algorithm through staircase modulation strategy is utilized to estimate switching angles and bridge DC voltage (input variables) of five-level and seven-level cascade H-Bridge inverters. Estimated values make sure that total harmonics distortion THD of the selected inverters will be minimized as possibl...
Article
Full-text available
Control of a conventional converter station which uses a three-phase controlled bridge for converting AC to DC and vice-versa is achieved by fast-acting control of the valve firing angles. Tap-changers which are fitted on the converter transformer provide a near constant AC voltage input to the bridge to correct relatively slow changes of AC voltag...
Conference Paper
A novel approach for asymmetrical fault type classification on a parallel transmission line is described in this paper. The method is based on applying chromatic monitoring methodology on the negative and zero sequence components of the three phase currents of either sender or receiver end of a transmission line. Different asymmetrical Faults scena...

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Projects

Project (1)
Project
Optimal operating control strategy for domestic electrical water heaters