الفهرس 
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Abstract
This thesis represents a proposed mitigation method of the magnetic fields near an
overhead transmission line to avoid the harmful effects on the population around these lines.
Magnetic fields can cause diseases such as cancer in additional to change in human brain
activity and heart rate. Consequently, different methods are used to mitigate the magnetic
fields. In the present thesis, the magnetic fields will be calculated at first to determine the
regions that need to be protected against the magnetic fields more than the safe limits. Then
self-reactive compensation is introduced to mitigate the magnetic fields for transmission
lines operate from 66 kV to 500 kV. The proposed method causes the current in the power
transmission portion near to the residence to be unbalanced. It can be done through shunt
reactive elements at the start and end of the specified portion resulting in a lower magnetic
fields. Genetic Algorithm (GA) is used to estimate these reactive parameters achieving the
minimum magnetic fields in residence. Results show that the magnetic fields is mitigated to
acceptable levels. Moreover, several additional advantages are gained compared to other
conventional methods such as much lower cost and not using external sources. The proposed
method is applied to two cases 66kV Egyptian tower double circuit and 500 kV Egyptian
tower with different configuration of reactive compensating elements. Results show a
considerable reduction in magnetic and better than obtained using shielding loops.