In impedance diagram different power system elements are represented by symbols

In an impedance diagram, which is used extensively in power system analysis to represent various components of an electrical power system and their relationships, different power system elements are represented by specific symbols or notations. These diagrams help in simplifying complex power systems for analysis, particularly when solving for voltage, current, and power flows across the system. Below are some of the key elements found in a power system and their typical representations in an impedance diagram:

1. Resistor (R): Represented by a rectangle or a series of zig-zag lines. It symbolizes elements that primarily offer resistance to the flow of electric current, converting electrical energy into heat. Resistors in the power system could be actual resistive loads or the resistive components of transmission lines and cables.

2. Inductor (L): Usually shown as a series of curved lines or loops, representing inductance in the system. Inductors store energy in the magnetic field when electric current flows through them. In power systems, this is relevant for components like the inductive part of transmission lines, reactors, and the inductance in transformers.

3. Capacitor (C): Depicted by a pair of parallel lines, sometimes with one line shorter than the other, symbolizing capacitance. Capacitors store energy in the electric field created between the two plates. In power systems, this can be taken as the capacitive properties of transmission lines or actual capacitors used for power factor correction.

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