Az elosztott energiatermelés hatásainak vizsgálata az öregedő hálózati infrastruktúrára

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Konzulens:
Dr. Tamus Zoltán Ádám
Villamos Energetika Tanszék

In the last few years, the electrical grid methods and techniques are changing rapidly. The distributed generation has increased significantly due to the reliance on renewable energy. Moreover, the recent rise in numbers of electric vehicles introduced to the distribution grid may cause serious impact on the low voltage distribution cables. Hence, the need of a robust electrical system which can withstand the new involved technologies has become more essential.

The increasing penetration of these applications to the distribution infrastructure leads to high variation of load which can increase the current flow in cables consequently their temperature raises, which results in shorter lifetime. Studying the underground low voltage cables thermal and electrical behavior can lead us to prolong its lifetime and avoid huge spend of money.

This study investigates the low voltage underground cables, its types and properties, its thermal and electrical parameters and its aging factors. Moreover, the study illustrates the dielectric materials used for the insulation in low voltage cables and compares between its properties.

The simulation software CYMCAP has been used to investigate and verify how different cable configurations are behaving thermally and electrically when applying different load scenarios. By modeling different cases and modifying in each case a single cable feature; the insulation or sheath dielectric material, the conductor material…etc.

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