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Analysis of Harmonics in the Korean Power System:

Power is a crucial part of daily life in the modern world. Most objects we use daily are powered in some way. We must make use of the most innovative power technology available to supply people with electricity in a safe and fair manner. Harmonics raise the circuit’s current flow’s RMS value, which raises the loss. The electrical systems have been plagued by several issues as a result. Harmonics have an impact on the loads as well as the entire distribution system. Additionally, delicate office and manufacturing tools and equipment are vulnerable to harmonic damage. Harmonic defect cannot always be obvious right once, and it might be challenging to tell it apart from regular wear and tear. 

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Harmonic Distortion Definition:

Harmonic problems may reduce the reliability of the power supply due to its tiny size. Electric current and voltage harmonics cause problems in power systems. Equipment may malfunction or fail when the power source contains numerous harmonics. Harmonics, or changes in the shape of the current waveform, are typically introduced into an electrical system by a nonlinear load. Nonlinear loads and harmonics are produced in power systems by personal computers, variable speed motors, driven motors, fax machines, laser printers, Switch-mode power supplies (SMPS), batteries, and uninterruptible power supplies (UPS). 

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The Need for Harmonic Analysis:

Electrical systems become less reliable and efficient because of harmonics. Your power system’s dependability will improve if you apply harmonic analysis to find harmonics there. Non-linear currents are created when power electronics equipment usage grows. The system needs to lead to the creation of harmonics. Equipment must be more energy efficient and use less electricity. 

When did Harmonic Analysis become significant?

  • The harmonic limits need to be examined if the total load or bus system readings are greater than 25% of the total load.
  • to fix harmonic-related problems, such equipment failure or damage.
  • When and how many non-linear loads will the plant be expanded?
  • When an additional capacitor bank is introduced to the electrical systems, harmonic analysis is required.
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The design of the apparatus An unhurried conclusion
Equipment that rotates
In addition to power loss, overheating, and pulsing torque, cable resistance increases.
Power lines, a switchboard, and a transformer are necessary.
Overheating, excessive use, overloading the neutral, and power outages are indications that there is a problem.
Electric capacitors
Many current events are unintentionally happening.
Electrical power
Inadequate performance
Safeguarding relays
Rude habits and challenging travels

A sinusoidal waveform encounters a nonlinear load, causing distortion and harmonic generation in the system. The existence or absence of harmonics in a system is frequently detected through harmonic analysis. 

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Benefits of Doing Away with Harmonics in the Power System:

  • By minimizing the amount of energy wasted through cables, switch gears, and safety systems, harmonic analysis lowers operational expenses. It also aids in lowering power system losses.
  • It permits the removal of large transformers, which lowers the need for cable, switchgear, and busbars by lowering the RMS current in the electrical system.
  • Performance naturally increases when losses are reduced, and the RMS current value is lowered. Harmonics cause overheating of cables, transformers, motors, and capacitors in addition to increasing losses and raising the RMS value of current. The undesirable outcomes may force you to terminate a surgery or cause you to lose money.
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Procedure for Conducting a Power Quality Analysis:

  • Make a single-line graph to display non-linear loads.
  • Keep an eye out for the connecting thread (PCC).
  • Exposes the buses inside the building that might be impacted by harmonics.
  • Gather as much data as you can on the electricity provider’s historical harmonics performance and non-linear load characteristics.
  • Using the ETAP program and the electrical system’s performance, create a model.
  • Examine the harmonics, voltage, and current distortion levels.
  • Choose a cure if the harmonic distortion is too great.
  • After implementing the mitigation strategy, do another harmonic analysis to confirm CEC compliance.

CareLabs provides state-of-the-art technology to its employees so that they can guarantee the security of your electrical equipment and provide you with a safe working environment. Get a quotation now and find out more about CareLabs’ harmonics research and analysis services. 

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