Power Transmission And Distribution

Model No. DL GTU102-S

In this laboratory the basic circuits of power engineering, series and parallel connections of operating equipment (lines, transformers) as well as circuits involving the conversion of delta connections to star connections and vice versa, are analysed. Our system, composed of a modular configuration, allows the student to identify immediately the main components.
Three-phase transformers, transmission lines and bus bar are the main subjects of study.
The entire lab can be divided in three different configurations, related to the three subjects of study, in order to perform a didactic experience focussed on that specific field.

Experiments:
Three-phase transformers
– Transformer vector group.
– Transformer no-load performance.
– Transformer short-circuit performance and equivalent circuit.
– Load performance.
– Zero impedance.
– Asymmetrical load.
– Autotransformer.
– Parallel operation.
Transmission lines
– Studies on three-phase transmission lines
– No-load performance, Ferranti effect.
– Matched load performance.
– Three-phase symmetrical short-circuits.
– Resistive-inductive load.
– Resistive-capacitive load.
– Zero-phase impedance.
– Parallel compensation for a resistive-inductive load.
– Series compensation for a resistive-inductive load.
– Three-phase asymmetric short-circuit.
Parallel and series connection of transmission lines
– Series connection of two lines.
– Parallel connection of two lines.
Transmission line with earth-fault compensation
– Earth fault on a line with an isolated star point.
– Petersen suppression coil.
Power distribution
Three-pole double busbar systems
– Basic double busbar system.
– Double busbar system with load.
– Busbar coupling.
Network topologies
– Radial network.
– Meshed network.

Expansion:
Adding optional modules to the configurations (DL GTU102-S), the available list of experiments and system capabilities are expanded.

Transformer protection
– Parameter configuration, fault simulation, relay response measurement, and oscillograph recording for the following protections:
– Time overcurrent protection
– Transformer differential protection
Transmission line protection
– Parameter configuration, fault simulation, relay response measurement and oscillograph recording for the following protections:
– Inverse time overcurrent protection
– Earth-fault protection
– Undervoltage and overvoltage protection
– Unbalanced load protection
– Directional power protection
– Protection of parallel connected lines
Distance protection
– Parameter configuration, fault simulation, relay response measurement and recording for the following protections:
– Overcurrent protection
– Overvoltage protection
– Undervoltage protection
– Unbalanced load protection
– Distance protection

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