TY  - JOUR
T1  - Power Quality Prolems and Improvement Techniques
AU - Fathel Ali, Abdul-Jabbar AU - Saeed. Shukir, Samhar AU - Zayer, Wael Hussein 
JO  - Journal of Engineering and Applied Sciences
VL  - 14
IS  - 16
SP  - 5888
EP  - 5898
PY  - 2019
DA  - 2001/08/19
SN  - 1816-949x
DO  - jeasci.2019.5888.5898
UR  - https://makhillpublications.co/view-article.php?doi=jeasci.2019.5888.5898
KW  - transmitting
KW  -electrical disturbance
KW  -Non-linear loads
KW  -systems malfunction
KW  -power quality
KW  -study the medium
AB  - Recently a large interest has been focused on power quality domain due to: disturbances caused by
the non-linear loads, increase in the number of electronic devices and growth of renewable energy sources.
Power quality measures the efficiency of electric power transmitted from generation to the industrial, domestic
and commercial consumers. At least 50% of power quality problems are of voltage quality type. In a power
system voltage sags and voltage distortion introduced by harmonics are considered to be the most severe
affecting power quality because of both utilities and consumers are affected by these disturbances. These
problems could be solved by: design equipments and electrical systems to prevent electrical disturbances from
causing equipments or systems to malfunction, analyze the symptoms of a power quality problems to determine
its causes and solutions, study the medium that is transmitting the electrical disturbance and eliminate or reduce
the effect of that medium, treat the symptoms of the power quality problems by using the power conditioning
device and custom power device. This study, presents the power quality problems such as sags, swells,
harmonics, voltage interruptions and transient and presents power quality enhancement techniques which are
two categories power conditioning devices and custom power devices the second method is the most efficient
and effective method to solve the power quality problems and protective the sensitive loads from power
disturbances. The modeling and simulation of a power distribution system was achieved using
MATLAB/Simulink. Three phase fault and double line to ground fault are created with the proposed system
and the faults are initiated at a duration of 0.8 sec and keep till 0.95 sec. Dynamic Voltage Restorer (DVR) is used
to treat the power quality problems.
ER  -