Module 3.3 - High-frequency behaviour of components - Mechanical switches and transformers
High-frequency behaviour of components - Mechanical switches and transformers
Stability and reliability of power system is highly affected by the state of apparatus connected to it. Transformer is one of the crucial elements associated with it and hence its uninterrupted functioning is very important. Transformer is prone to short circuit forces, lightning impulses and switching surges. Among all, electromagnetic forces developed by short circuit currents are enormously high. Cumulative effect of exposure to such abnormality can cause permanent mechanical deformation in transformer [1]- [3]. As a result, different parts of windings and insulation system would possibly be subjected to stresses of higher value than the recommended values. All such events consequently would lead to catastrophic failure. It is therefore necessary to identify mechanical deformations during its incipient stage.
Stability and reliability of power system is highly affected by the state of apparatus connected to it. Transformer is one of the crucial elements associated with it and hence its uninterrupted functioning is very important. Transformer is prone to short circuit forces, lightning impulses and switching surges. Among all, electromagnetic forces developed by short circuit currents are enormously high. Cumulative effect of exposure to such abnormality can cause permanent mechanical deformation in transformer [1]- [3]. As a result, different parts of windings and insulation system would possibly be subjected to stresses of higher value than the recommended values. All such events consequently would lead to catastrophic failure. It is therefore necessary to identify mechanical deformations during its incipient stage.
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