Návrh přístrojového vybavení rezervních vývodových kobek 22 kV v rozvodně Ostrava Rudná 110/22 kV

Abstract

This thesis focuses on the topic of 110/22 kV substations. More specifically, it deals with the addition of reserve outlet cells at a voltage level of 22 kV in the TR 110/22 kV Ostrava Rudná substation. The theoretical part is divided into four chapters. The first chapter introduces a theoretical analysis of 110 kV and 22 kV distribution equipment, their design and connection types. The second chapter describes the theory of 22 kV cell instrumentation. The third chapter presents a physical analysis of thermal and dynamic effects of short-circuit currents in electrical equipment. In the last chapter of the theoretical part, an analysis of the protections suitable for 22 kV outlet cells is performed. This thesis concludes with the fifth chapter dedicated to the practical part. The practical part summarizes the investor's requirements and explores the current state of the substation Ostrava Rudná. Furthermore, the practical part includes the specification and design of 22 kV outlet cell instrumentation, as well as the busbar sizing calculation, technology connection and SCADA Mikrodispečink system update. Also, this thesis is supplemented with technical drawings which can be found in the appendices.