System
In order to ensure a nationwide supply of electrical energy, large transmission grids are required in addition to power plants. These grids consist of a large number of lines and transformers as well as electrical substations.
Among the network types, a distinction is made between radial, ring and meshed networks. Extensive calculations are required to determine an optimal grid configuration. But even complicated grid structures can be traced back to a few basic circuits. To understand them, it is therefore important to first familiarise oneself with the basic circuits of power engineering.
With this equipment, series and parallel circuits of transmission lines are examined.
Learning objectives
- Measure the voltage distribution when two lines of different lengths are connected in series.
- Determine the relationship between line length and voltage drop.
- Investigate the influence of operating capacitances on voltages and currents.
- Get to know the behaviour of an island system under different types of load and compare it with the statements made in the theoretical part.
Through measurement and calculation, the learner should understand and determine the behaviour and characteristics of a grid.
Target groups
Pupils in vocational training in power engineering. Training in the field of power plant technology in industry. Students in general electrical engineering and power engineering. Levels up to a bachelor's degree.
Knowledge of three-phase or alternating current technology is a prerequisite.
Topics
- Series connection of two transmission lines
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- Voltage distribution when two lines with different lengths are connected in series
- Relationship between line length and voltage drop
- Influence of operating capacitances on voltages and currents
- Load and voltage drop when two lines are connected in parallel
- Exercises for further elaboration
