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Harmonic Study and
Analysis

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What is it?

Power quality analysis checks the power supply for safety and efficiency.

Years of experience?

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Electrical Standards

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CareLabs offers electrical installation services such as safety inspections, testing, calibration, and certification, as well as comprehensive harmonic research and analysis. Professionals will evaluate harmonic hazards, training programs, documentation, and personal protective equipment (PPE) to ensure that your electrical safety program is current, thorough, and compliant. CareLabs can detect harmonics early on and take the necessary steps to limit the impact of harmonic distortions to guarantee the safety of the equipment. Harmonic voltages and currents can result in inefficiency in an electrical system. They generate inefficient heat and might reduce the quality of the power produced. Harmonic voltage analysis is a mathematical approach used to predict potential resonances and degrees of harmonic distortion. 

Harmonic voltage analysis is a mathematical technique for predicting potential resonances and harmonic distortion levels based on empirical evidence. Nonlinear electrical switching equipment, including AC variable frequency drives, DC drives, fluorescent lights, and computers, introduces harmonic frequencies into the electrical system. High voltage/current harmonic levels provide a considerable risk of equipment failure. Consequently, a timely harmonic inquiry and analysis is needed. Currently, there are 5% harmonic restrictions in systems using 415 volts, with 4% odd harmonics and 2% even harmonics.

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Harmonic Distortion Has the Following Effects:

  • It causes circulating current and high voltage.
  • Equipment failure and damage owing to significant voltage distortion
  • Fault-initiated triggering of branch circuit breakers
  • Deviation measurement
  • Fires and explosions in the wiring and distribution system
  • Power outages caused by generators
  • A decrease in the system’s power factor
  • Expensive installation and energy costs
  • Productivity losses
  • Downtime and unnecessary vehicle journeys
  • Larger motor size
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Harmonic difficulties are extremely uncommon, but when they do occur, they tend to reduce the reliability, quality, and efficiency of the power system. Therefore, harmonic inquiry and analysis is essential. 

  • Protects against voltage and current harmonics
  • Limitation of frequency volatility
  • Voltage and current imbalance
  • Improves power factor analysis and keeps the result near to one.
  • Regulates voltage fluctuations.

Harmonic research and analysis will provide insight into the probable cause and effect of power quality concerns, facilitating the avoidance of harmonic-related problems during the design phase and reducing the likelihood of unexpected effects. 

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Workflow of Harmonic Analysis and Research at CareLabs:

  • Emphasize available nonlinear loads, capacitor banks, and long medium-voltage cables on the single-line diagram.
  • Determine which in-plant system buses are susceptible to harmonic distortions
  • Determine the point of common connection (PCC).
  • Collect harmonics data for all nonlinear loads.
  • Acquire crucial information on voltage and current harmonics at the specified PCC, including the maximum and minimum short circuit fault levels
  • Conduct harmonic analysis using ETAP on the electrical network.
  • Compute the global and discrete values for current and voltage wave distortion at the buses and PCC.
  • Draw the harmonic frequency spectrum.
  • A suitable mitigation approach is proposed and implemented if harmonic distortion levels exceed acceptable limits.
  • After including the mitigation solution, rerun the analysis.
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CareLabs Service Advantages:

If harmonics in the background have already been measured, the second stage consists of higher ratings.

  • If the background is less than 25%, stage 2 allows variable converter size based on fault level and converter type.
  • If the background is between 25% and 75%, 50% of the allowed converter grade may be used.
  • An exhaustive harmonic analysis is performed on the top background.

CareLabs has crew members stationed in several locations to ensure that our specialists are readily accessible in the event of a routine or urgent circumstance. CareLabs has rapidly established itself as an ISO 9001:2008-accredited organization with a devoted customer that has provided exceptional feedback. In several important Taiwan cities, including Taipei, Kaohsiung, Taichung, and Tainan, we conduct harmonic research and analysis. Contact us right now to organize your harmonic analysis and study in Taiwanese or to obtain a quote! 

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