There are several factors that can affect power quality, including:
1. Voltage fluctuation: This refers to the variations in voltage levels or deviations from the standard voltage levels.
2. Electrical noise: This is the undesirable electrical signals that can be superimposed on the power supply.
3. Harmonics: Harmonics are the multiples of the fundamental power frequency and can cause interference in sensitive equipment.
4. Transients: These are sudden changes in voltage or current caused by lightning, switching of inductive loads, or fault conditions.
5. Frequency variation: This is a change in the power supply frequency.
6. Power factor: This measures how efficiently power is being used and is affected by factors such as the type of load, the phase angle between voltage and current, and the presence of harmonics.
7. Power interruption: This is the complete loss of power supply.
8. Voltage unbalance: This refers to the inequality of voltages among three phases of a three-phase power supply.
9. Weather: Weather conditions can cause variation and interruption of power supply.
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