Kabelové vedení 400 kV, jeho kontrola a výměna

Abstract

This master's thesis focuses on 400 kV Extra High Voltage (EHV) transmission networks, with a specific emphasis on underground cable lines. This type of infrastructure is utilized to a limited extent in the Czech Republic, primarily due to high investment costs, construction complexity, lower operational reliability, and technical constraints, particularly regarding capacitance and reactive power compensation. The thesis addresses the replacement of a specific cable line at the Dlouhé stráně Pumped Storage Power Plant. It includes the selection of a new cable type, conductor cross-section calculation, verification of short-circuit withstand capability, and other essential technical calculations and assessments. Subsequently, the thesis describes the testing and diagnostics of the cable system in relation to its manufacturing, delivery, installation, and operation.